WO2000072644A1 - Feuille pour carte de circuits imprimes, procede de formation de trou d'interconnexion, feuille de resine a trou d'interconnexion charge, carte de circuits imprimes et procede de fabrication associe - Google Patents
Feuille pour carte de circuits imprimes, procede de formation de trou d'interconnexion, feuille de resine a trou d'interconnexion charge, carte de circuits imprimes et procede de fabrication associe Download PDFInfo
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- WO2000072644A1 WO2000072644A1 PCT/JP2000/002879 JP0002879W WO0072644A1 WO 2000072644 A1 WO2000072644 A1 WO 2000072644A1 JP 0002879 W JP0002879 W JP 0002879W WO 0072644 A1 WO0072644 A1 WO 0072644A1
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/46—Manufacturing multilayer circuits
- H05K3/4611—Manufacturing multilayer circuits by laminating two or more circuit boards
- H05K3/4614—Manufacturing multilayer circuits by laminating two or more circuit boards the electrical connections between the circuit boards being made during lamination
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/40—Forming printed elements for providing electric connections to or between printed circuits
- H05K3/42—Plated through-holes or plated via connections
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/48—Manufacture or treatment of parts, e.g. containers, prior to assembly of the devices, using processes not provided for in a single one of the subgroups H01L21/06 - H01L21/326
- H01L21/4814—Conductive parts
- H01L21/4846—Leads on or in insulating or insulated substrates, e.g. metallisation
- H01L21/4857—Multilayer substrates
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/48—Manufacture or treatment of parts, e.g. containers, prior to assembly of the devices, using processes not provided for in a single one of the subgroups H01L21/06 - H01L21/326
- H01L21/4814—Conductive parts
- H01L21/4846—Leads on or in insulating or insulated substrates, e.g. metallisation
- H01L21/486—Via connections through the substrate with or without pins
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
- H01L23/488—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions
- H01L23/498—Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers
- H01L23/49822—Multilayer substrates
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
- H01L23/488—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions
- H01L23/498—Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers
- H01L23/49827—Via connections through the substrates, e.g. pins going through the substrate, coaxial cables
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/40—Forming printed elements for providing electric connections to or between printed circuits
- H05K3/4038—Through-connections; Vertical interconnect access [VIA] connections
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/46—Manufacturing multilayer circuits
- H05K3/4611—Manufacturing multilayer circuits by laminating two or more circuit boards
- H05K3/4614—Manufacturing multilayer circuits by laminating two or more circuit boards the electrical connections between the circuit boards being made during lamination
- H05K3/4617—Manufacturing multilayer circuits by laminating two or more circuit boards the electrical connections between the circuit boards being made during lamination characterized by laminating only or mainly similar single-sided circuit boards
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/46—Manufacturing multilayer circuits
- H05K3/4611—Manufacturing multilayer circuits by laminating two or more circuit boards
- H05K3/4614—Manufacturing multilayer circuits by laminating two or more circuit boards the electrical connections between the circuit boards being made during lamination
- H05K3/462—Manufacturing multilayer circuits by laminating two or more circuit boards the electrical connections between the circuit boards being made during lamination characterized by laminating only or mainly similar double-sided circuit boards
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/10—Bump connectors; Manufacturing methods related thereto
- H01L2224/15—Structure, shape, material or disposition of the bump connectors after the connecting process
- H01L2224/16—Structure, shape, material or disposition of the bump connectors after the connecting process of an individual bump connector
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01078—Platinum [Pt]
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01079—Gold [Au]
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
- H01L2924/151—Die mounting substrate
- H01L2924/153—Connection portion
- H01L2924/1531—Connection portion the connection portion being formed only on the surface of the substrate opposite to the die mounting surface
- H01L2924/15311—Connection portion the connection portion being formed only on the surface of the substrate opposite to the die mounting surface being a ball array, e.g. BGA
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/03—Conductive materials
- H05K2201/0332—Structure of the conductor
- H05K2201/0364—Conductor shape
- H05K2201/0385—Displaced conductors
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10227—Other objects, e.g. metallic pieces
- H05K2201/10378—Interposers
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/11—Treatments characterised by their effect, e.g. heating, cooling, roughening
- H05K2203/1189—Pressing leads, bumps or a die through an insulating layer
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/40—Forming printed elements for providing electric connections to or between printed circuits
- H05K3/4038—Through-connections; Vertical interconnect access [VIA] connections
- H05K3/4046—Through-connections; Vertical interconnect access [VIA] connections using auxiliary conductive elements, e.g. metallic spheres, eyelets, pieces of wire
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
- Y10T29/49126—Assembling bases
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
- Y10T29/49155—Manufacturing circuit on or in base
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
- Y10T29/49155—Manufacturing circuit on or in base
- Y10T29/49158—Manufacturing circuit on or in base with molding of insulated base
- Y10T29/4916—Simultaneous circuit manufacturing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
- Y10T29/49155—Manufacturing circuit on or in base
- Y10T29/49165—Manufacturing circuit on or in base by forming conductive walled aperture in base
Definitions
- the present invention relates to a printed wiring board forming sheet, a via forming method, a method of manufacturing a resin sheet having a filled via, an apparatus for forming the above-described via, a TAB (Tape Automated Bonding) tape, A so-called multilayer substrate using rigid substrates such as CSP (Chip Size Package), BGA (Ball Grid Array), FPC (Flexible Printed Circuit), and glass epoxy, and a multilayer printer that can be manufactured using a punching press And a method of manufacturing the same.
- TAB Transmission Automated Bonding
- a mold having an upper mold 112 having a punch 110 formed thereon and a lower mold (also referred to as a base) 116 having a die hole 114 formed at a position corresponding to the punch 110 is used.
- a resin sheet (a resin sheet such as polyimide resin sheet, glass epoxy resin sheet, etc.) 118 that forms a through hole is placed between them (Fig. 25 (a)).
- the upper mold 112 is lowered, and the punch 110 is penetrated through the resin sheet 118 to punch out a sheet.
- the punched hole 120 is made of resin Formed on sheet 118 ( Figure 25 (b)).
- the conductor paste 122 is cut into the resin sheet 118 using a screen printing method using a metal mask (not shown) and a squeegee (not shown) having openings corresponding to the punched holes 120. Press into 120. In this way, the via 124 in which the conductor is filled in the through hole can be formed in the resin sheet 118.
- a conductor layer 126 is formed by applying electroless copper plating and then electrolytic copper plating to both surfaces of a resin sheet 118 having vias 124 formed thereon.
- the conductor layer can be formed by a method of bonding a copper foil.
- the conductor layer 126 is patterned by photolithography.
- a first pad 128 that contacts the electrode terminal of the semiconductor chip and a first wiring pattern 130 that connects the first pad 128 and the upper end of the via 124 are formed. I do.
- a second pad 132 for mounting an external connection terminal (such as a hang ball) and a second wiring pattern 134 for easily connecting the second node 132 to the via 124 are provided. ( Figure 26 (b)).
- the semiconductor chip 136 is mounted on the upper surface of the resin sheet 118 (the mounting surface of the semiconductor chip), and the electrode pad 138 of the semiconductor chip 136 is electrically connected to the first pad 128.
- the external connection terminal is, for example, a bump. But it can be a pin.
- the resin sheet 118 on which the vias 124 are formed may be formed on a multilayer substrate by being laminated in multiple layers.
- a printed wiring board having a wiring pattern formed on both sides of the insulating substrate can be formed.
- a printed wiring board having a wiring pattern formed on both sides are a tape automated bonding (TAB) tape and a CSP (chip size package) using a flexible polyimide or the like for the substrate as described above.
- TAB tape automated bonding
- CSP chip size package
- a hole such as a through-hole or a blind via hole needs to be formed in advance at a desired portion of the substrate using a punch punch, a drill, or a laser beam. There is. When one laser beam is used, it is necessary to remove so-called smear generated by the heat of the laser beam (desmear).
- through holes are used.
- a screen printing machine to fill the holes with a conductive paste or the like and electrically connect the conductor layers on the front and back surfaces.
- conductive paste printing method it is necessary to apply a backing sheet and the like after the perforation process, and then print, cure, and peel off the backing sheet in order to avoid backing.
- blind via holes the filling of the holes is completed. Since the mask aperture diameter must be set strictly for perfection, the printing press must have accurate positional accuracy, such as an image recognition device, which makes the specifications of the printing press expensive and consequently the product cost. Rises.
- the plating method Since this method is a wet method, there is a problem in treating waste liquid.
- Japanese Patent Application Laid-Open No. 59-61992 discloses that a wiring pattern having a conductive portion covering a through hole (through hole) is formed on both surfaces of an insulating substrate, and a hole having a diameter smaller than the diameter of the through hole is formed at the center of the conductive portion.
- Japanese Patent Application Laid-Open No. 62-81789 discloses that a through-hole (conductive hole) is formed by punching unfired ceramic (Darryn sheet).
- the wiring board is manufactured by inserting conductive pins into the through holes, printing a conductor layer on the surface of the board by screen printing, and then firing the green sheet.
- This method uses a green sheet as a substrate as described above, and does not use an insulating substrate such as polyimide.
- a plurality of printed wiring boards having a wiring pattern formed on the front and back surfaces or one surface as described above are used as a multi-layer laminated board.
- Japanese Patent Application Laid-Open No. 8-125344 discloses a build-up method using such a printed wiring board. This method will be described with reference to FIGS. 27A to 27D.
- a desired first wiring pattern 402 is formed on the surface of an insulating substrate 401 in which one surface of the insulating substrate is covered with a first copper-clad layer by masking and etching, and a desired first wiring pattern 402 is formed on the surface.
- the conical first conductive bump 403 is printed.
- a first insulating adhesive layer 404 having the same shape as the insulating substrate 401 and having a second copper-clad layer 402a coated on the upper surface is positioned above the insulating substrate 401 (FIG. 27a).
- the first laminated body 405 is formed by contacting the tension layer 402a (FIG. 27B).
- the surface of the second copper-clad layer 402a of the first laminate 405 in FIG. 27B is masked and etched to form a desired second wiring pattern 402b on the surface, and the second wiring pattern 402b is formed on the surface.
- the first conductive bump A second conductive bump 403a having the same shape as that of is printed.
- the second insulating adhesive layer 404a having the third copper-clad layer 402c on the upper surface is positioned above the first laminate 405 (FIG. 27c).
- the second laminate 405a is configured (FIG. 27D).
- a plurality of wiring patterns 402, 402b, and 402d are formed on an insulating substrate 401 via insulating adhesive layers 404 and 404a.
- wiring patterns to be formed are becoming finer in accordance with recent miniaturization requirements, and it is not easy to form bumps corresponding to such fine wiring patterns by a printing method. It is extremely burdensome to perform the printing method as many times as the number of layers of the wiring pattern, and if a large number of products must be manufactured, the time and economic loss cannot be ignored.
- a wiring pattern layer can be formed in the same manner below the insulating substrate 401, but in this case, the upper wiring pattern and the lower wiring pattern of the insulating substrate 1 are electrically connected.
- it is necessary to form a through-hole penetrating the insulating substrate 401 which requires not only the labor of forming the through-hole but also the plating of the through-hole and the like. It becomes much more complicated.
- Another object of the present invention is to provide an apparatus for forming such a via or a filled via.
- An object of the present invention is to provide a method for manufacturing a resin sheet having field vias that can be reliably filled with a conductor while simplifying the manufacturing process.
- An object of the present invention is to provide a printed wiring board having a reliable electrical connection between the front and back conductor layers and capable of reducing the manufacturing cost, and a method for manufacturing the same.
- the present invention provides a multilayer laminate in which a plurality of printed wiring boards having a wiring pattern formed on the front and back surfaces as described above are laminated to ensure good electrical connection in the thickness direction. It is an object of the present invention to provide a method for producing the same and such a multilayer laminate.
- a sheet for forming a printed wiring board according to the present invention includes a resin sheet having a through hole in a thickness direction, and a conductive sheet inserted into the through hole and having a form substantially corresponding to the through hole. It consists of small metal pieces.
- a conductive metal piece is introduced into the through hole of a resin sheet having a through hole, and the metal piece is formed by a resin sheet. It may be flush with the front surface or the back surface to be formed, and it is inserted into the through hole so that the conductive metal pieces protrude from one or both surfaces of the resin sheet. May be.
- Such a via of the printed wiring board forming sheet of the present invention is formed by forming a resin sheet and a conductive sheet on the base by using a punch and a mold having a base in which a die hole is formed.
- a metal sheet is placed on top of the resin sheet with the resin sheet placed on the base side, and the punch is relatively moved toward and away from the base to punch out a conductive metal sheet.
- the resin sheet is punched with the punched conductive metal sheet pieces, and the punched conductive metal sheet pieces are positioned in the punched holes formed in the resin sheet.
- a resin sheet and a conductive metal thicker than the resin sheet are placed on the base, and the resin sheet is used as a base. And place it on top of The conductive metal sheet is punched by moving the punch relatively to and away from the base, and the resin sheet is punched with a small piece of the punched conductive metal sheet, and the punched conductive metal sheet is punched.
- a small piece of the conductive metal sheet is cut into a punched hole formed in the resin sheet, and at least one end of the small piece is formed of the resin sheet. It can be manufactured by a via forming method characterized by being inserted so as to protrude from the surface.
- the resin sheet of the present invention having such a filled via can be produced, for example, as follows.
- the first method is a method of manufacturing a resin sheet having a filled via filled with metal inside the via
- the punch is moved relatively to and away from the base to punch out a conductive metal sheet, and the resin sheet is punched with a small piece of the punched metal sheet, and the resin sheet is punched.
- the first aspect of the present invention generally provides a method for producing a resin sheet having a filled via filled with metal inside a via, using a punch and a mold having a base having a die hole, A resin sheet and a conductive metal sheet are placed on the base, and a resin sheet is placed on the base side. And supplying the resin sheet by superimposing the punch and punching the conductive metal sheet by moving the punch relatively to and from the base, and cutting the resin sheet by a small piece of the punched metal sheet. And a punching step of positioning a small piece of the metal sheet in a punching hole of the resin sheet.
- drilling and filling of field vias can be performed simultaneously by one press working, so that the manufacturing process can be simplified and cost can be reduced.
- the step of forming a wiring pattern on one or both surfaces of the resin sheet obtained above, which is electrically connected to the small pieces located in the punched holes, can be performed.
- the second method is a method of manufacturing a resin sheet having a filled via filled with metal inside the via
- the punch is moved relatively to and away from the base to punch a conductive metal sheet, and a small piece of the punched metal sheet is positioned in a punched hole formed in advance in the resin sheet. And a process for producing a resin sheet having filled vias.
- the inside of the via is filled with metal.
- Forming a punched hole in a resin sheet in a required pattern using a punch and a die having a base having a die hole the method comprising the steps of: A supply step of superposing and supplying the resin sheet and the conductive metal sheet having the punched holes formed thereon with the resin sheet as a base, Punching a conductive metal sheet by moving the metal sheet into and out of the metal sheet, and positioning a small piece of the punched metal sheet in a punched hole formed in the resin sheet beforehand.
- the small pieces can be easily and reliably positioned in the punched holes by the second press.
- a third method is a method of manufacturing a resin sheet having a filled via filled with metal inside the via
- a punch and a mold having a base having a die hole, a resin sheet having a conductive layer formed on one side on the base and a conductive metal sheet, and a resin sheet on the base side. And a supply process that supplies
- a third aspect of the present invention generally provides a method for manufacturing a resin sheet having a filled via filled with metal inside a via, using a punch and a mold having a base having a die hole, A supply step of supplying a resin sheet having a conductive layer formed on one side on the base and a conductive metal sheet in an overlapping manner with the resin sheet serving as a base side; and supplying the punch to the base.
- the metal sheet is punched out by punching out the conductive metal sheet by relatively moving the metal sheet, and the resin sheet is punched by the punched small piece of metal sheet.
- the small piece of metal sheet is punched into the punched hole of the resin sheet. And a punching step of bringing the conductive layer into contact with the conductor layer.
- the third aspect it is possible to easily manufacture a resin sheet with a filled via having a conductor layer on one side.
- a fourth method is a method of manufacturing a resin sheet having a filled via in a via inside of which a metal is filled.
- the punch is moved relatively to and away from the base to punch out a conductive metal sheet, and a small piece of the punched metal sheet is inserted into a punched hole previously formed in the resin sheet.
- a fourth aspect of the present invention generally provides a method for producing a resin sheet having a filled via filled with metal inside a via, using a punch and a mold having a base having a die hole. Forming a punched hole in a required pattern on a resin sheet having a conductor layer formed on one side; and forming a resin sheet having the punched hole on the base and a conductive metal sheet, A supply step of supplying the sheet by superimposing the sheet on the base side, and punching a conductive metal sheet by moving the punch relatively to and from the base, and removing a small piece of the punched metal sheet. And a punching step of contacting the conductive layer with a punched hole formed in advance in the resin sheet.
- a resin sheet with a filled via having a conductor layer on one side can be easily and reliably manufactured.
- the fifth method is a method of manufacturing a resin sheet having a filled via filled with metal inside the via
- a punch and a mold having a base having a die hole, a resin sheet and a conductive metal sheet each having a conductive layer formed on both sides of the base, and a resin sheet as a base side.
- a fifth aspect of the present invention generally provides a method for producing a resin sheet having a filled via filled with metal inside a via, using a punch and a mold having a base having a die hole, A supply step of supplying a resin sheet having conductive layers formed on both sides thereof on the base and a conductive metal sheet in an overlapping manner with the resin sheet serving as a base side; and supplying the punch to the base.
- the metal sheet is punched out by punching out the conductive metal sheet by relatively moving the metal sheet in and out, and the resin sheet is punched by a small piece of the punched metal sheet, and the small piece of the metal sheet is inserted into a punched hole of the resin sheet.
- a punching step of contacting and positioning the two conductor layers.
- a resin sheet with filled vias having conductor layers on both surfaces can be easily manufactured.
- a sixth method is a method of manufacturing a resin sheet having a filled via filled with metal inside the via
- the punch is moved relatively to and away from the base to punch out a conductive metal sheet, and a small piece of the punched metal sheet is made of the resin.
- a sixth embodiment of the present invention generally provides a method for producing a resin sheet having a filled via filled with metal inside a via, using a punch and a mold having a base having a die hole, Forming a punched hole in a required pattern on a resin sheet having a conductor layer formed on both surfaces; and forming a resin sheet having the punched hole on the base and a conductive metal sheet into a resin sheet.
- a punching step of contacting the two conductor layers with a punched hole formed in advance in the resin sheet.
- a resin sheet with filled vias having conductor layers on both surfaces can be easily and reliably manufactured.
- a seventh method is a method of manufacturing a resin sheet having a filled via filled with metal inside the via
- the punch is moved relatively to and away from the base to punch a conductive metal sheet, and a small piece of the punched metal sheet is used to cut the metal sheet.
- a seventh aspect of the present invention generally provides a method for manufacturing a resin sheet having a filled via filled with metal inside a via, using a punch and a mold having a base having a die hole, A supply step of supplying a resin sheet and a conductive metal sheet thicker than the resin sheet on the base by overlapping the resin sheet on the base side; and supplying the punch to the base.
- the metal sheet is punched out by punching the conductive metal sheet by moving the metal sheet relatively to each other, and the small piece of the metal sheet is punched, and the small piece of the metal sheet is inserted into a punched hole of the resin sheet.
- a punching step of positioning the tip so as to protrude outside the punching hole.
- the filled via projects outside the sheet, a resin sheet that can use the projecting filled via portion as an external connection terminal can be easily manufactured.
- An eighth method is a method of manufacturing a resin sheet having a filled via filled with metal inside the via
- the punch is moved relatively to and away from the base to punch out a conductive metal sheet, and a small piece of the punched metal sheet is inserted into a punched hole formed in advance in the resin sheet.
- an eighth aspect of the present invention generally provides a method for producing a resin sheet having a filled via filled with metal inside a via, comprising using a die having a punch and a base having a die hole. Forming a punched hole in a resin sheet in a required pattern; and forming a resin sheet having the punched hole on the base and a conductive metal sheet thicker than the resin sheet.
- a punching step for positioning a punching hole formed in the resin sheet in advance such that the tip protrudes outward of the punching hole.
- a resin sheet having a filled via projecting outward from the sheet can be more easily and reliably manufactured.
- a ninth method is a method of manufacturing a resin sheet having a filled via filled with metal inside the via
- a resin sheet having a conductive layer formed on one side of the base and a conductive metal sheet thicker than the resin sheet are formed by: A supply process in which the resin sheet is provided on the base side and supplied in an overlapping manner; The punch is moved relatively to and away from the base to punch out a conductive metal sheet, and the resin sheet is punched with a small piece of the punched metal sheet, and the resin sheet is punched. A step of contacting a small piece of the metal sheet with the conductor layer in the hole and positioning the tip so as to protrude outside the punched hole.
- a ninth embodiment of the present invention generally provides a method for producing a resin sheet having a filled via filled with metal inside a via, the method comprising using a die having a punch and a base having a die hole.
- a resin sheet having a conductive layer formed on one side on the base and a conductive metal sheet thicker than the resin sheet are supplied by being overlapped with the resin sheet as the base side.
- a tenth method is a method for manufacturing a resin sheet having a filled via filled with metal inside the via
- a resin sheet having the punched holes formed on the base and a conductive metal sheet thicker than the resin sheet are supplied by overlapping the resin sheet on the base side. Supply process,
- a method for producing a resin sheet having filled vias comprising:
- a tenth aspect of the present invention generally provides a method of manufacturing a resin sheet having a filled via filled with metal inside a via, the method comprising the steps of: forming a punch and a mold having a base having a die hole. Forming a punched hole in a required pattern on a resin sheet having a conductor layer formed on one side thereof; and forming a resin sheet having the punched hole on the base and a resin sheet.
- a small piece of the metal sheet punched and punched is brought into contact with the conductor layer in a punched hole formed in advance in the resin sheet, and the tip is positioned so as to protrude outside the punched hole.
- Punching It is characterized in including Mukoto steps.
- a resin sheet having a conductor layer formed on one surface and having field vias can be manufactured more easily. You.
- a through-hole may be formed in the resin film in advance, or a through-hole may be punched out of a small conductor piece.
- a conductor layer may be disposed on one or both surfaces of the resin film.
- the resin sheet having a filled via of the present invention has a through-hole in the thickness direction, and a resin sheet having a conductor layer formed on at least one surface, and a resin sheet inserted into the through-hole.
- it is characterized by being made of a conductive metal piece having a form substantially corresponding to the through hole.
- the via forming apparatus includes: a mold having a base having a die hole formed therein; and a punch provided at a position corresponding to the die hole and moving relative to an upper limit relative to the base.
- a resin sheet and a conductive metal sheet are placed on the base in this order, and a punch is formed in the conductive metal sheet by bringing the punch relatively close to the base.
- the punch is positioned such that the punched conductive metal sheet can be inserted into a punched hole formed in the resin sheet and the punch is stopped so that the punch can be stopped.
- This is a conductive metal piece insertion via forming apparatus.
- the base on which the die holes are formed is a lower mold
- the punch is formed on an upper mold that is relatively movable with respect to the lower mold. It is preferable that it is done.
- the punch is configured so that it can be stopped so that its tip (lower end) is almost flush with the upper surface of the resin sheet placed on the base surface.
- the punch punches the conductive metal sheet placed on the resin sheet into a punched hole formed in the resin sheet placed on the base.
- First stop position control means for stopping the conductive metal piece at a position where it can be inserted into a punched hole previously punched in the resin film, and punching the resin film prior to inserting the conductive metal piece. It is preferable to provide second punch stop position control means for forming a through hole.
- the conductive metal sheet is at least one kind of metal sheet selected from the group consisting of a solder sheet, a copper sheet, a copper alloy sheet, and a sheet having a solder plating layer formed on a metal surface. It is preferred that
- the resin sheet is preferably a sheet formed of an insulating resin.
- the resin sheet used in the present invention include polyimide, polyester, polypropylene, and polyphenylenesulfide.
- the printed wiring board of the present invention has an insulating substrate and a conductor layer on at least both sides thereof, the substrate has a through-hole formed by a punching press, and the through-hole is formed by a punching press. A conductor is filled, and the conductor and the conductor layer are electrically connected. are doing.
- a through hole is formed in the thickness direction, and a through hole of an insulating substrate having a conductor layer on at least one of the front and back surfaces is filled with a conductor by a punching press.
- a punching press Preferably, at least a part of the conductor and at least a part of the conductor layer formed on the front and back surfaces of the insulating substrate are electrically connected.
- the printed wiring board has an insulating base material having a conductor layer on at least one of the front and back surfaces, a conductive sheet, and a die hole formed in the insulating base material.
- a conductor sheet is punched out by a punch that moves toward and away from the base, and an insulating base material is punched out from a small piece of the punched-out conductor sheet to form a through hole.
- at least a part of the conductive layer on the front and back surfaces is electrically connected by inserting the small piece into the through hole.
- the printed wiring board of the present invention usually has a multilayer structure of three or more layers including a conductor layer.
- the conductor layer is usually formed of lead, tin, copper, an alloy containing these as a main component, or the like.
- an insulating substrate having a through-hole formed in the thickness direction and to fill the through-hole with a conductor by a punching press.
- a through hole is formed by punching the substrate in the thickness direction, and a conductor is filled in the through hole by a punching press, and the conductor is electrically connected to at least a part of the conductor layer. Is preferred.
- This printed wiring board is composed of three or more layers including a conductor layer, and the conductor layer is composed of lead, tin, copper and an alloy containing these as main components. It is preferably formed of a metal or alloy such as
- the printed wiring board of the present invention includes an insulating sheet having a wiring pattern formed on both sides or one side, a conductor filled in a through hole penetrating the wiring pattern and the insulating sheet, At least one end surface of the conductor protrudes from a surface matching with the insulating sheet and / or the wiring pattern.
- the multilayer printed laminate of the present invention includes an insulating sheet having a wiring pattern formed on both sides or one side, and a conductor filled in a through hole penetrating the wiring pattern and the insulating sheet.
- a plurality of printed circuit boards having at least one end surface of the conductor having a protruding portion from a surface matching with the insulating sheet and the Z or the wiring pattern are laminated via an insulating adhesive layer.
- the present invention is characterized in that the plurality of printed circuit boards are pressure-bonded and laminated collectively.
- Such a multilayer printed wiring board has a through hole in which a conductor is filled in an insulating sheet having a wiring pattern formed on both sides or one side, and at least one of both ends of the conductor has the wiring pattern and Z or
- a printed circuit board formed so as to protrude from the surface of the insulating sheet is prepared, a plurality of the printed circuit boards are stacked via an insulating adhesive layer, and the plurality of printed boards are stacked.
- the printed circuit board is press-bonded and the projecting portion of the conductor penetrates the adhesive layer and contacts the wiring pattern of the adjacent printed circuit board and / or the conductive material, the electrical connection between the adjacent wiring patterns is made. It can be manufactured by forming a connection.
- the through hole is formed by punching. Further, in this method for manufacturing a multilayer printed wiring board, it is preferable to form a through hole by punching and insert a conductor into this through hole by a punching press.
- the printed circuit board of the present invention provides an insulating sheet having a wiring pattern formed on both sides or one side, and a conductor filled in the wiring pattern and a through hole penetrating the insulating sheet.
- a printed circuit board characterized in that at least one end surface of the conductor projects from a matching surface with the insulating sheet and the Z or the wiring pattern.
- a through hole is formed by punching or the like at a portion of an insulating sheet where a conductive material corresponding to a conventional conductive bump is formed, instead of a method of printing a conductive bump in a conventional build-up method by printing.
- the printed circuit board is formed such that the through hole is filled with the conductive material, and at least one of both ends of the conductive material in the through hole protrudes from a wiring pattern or an insulating sheet surface. (Unit board).
- wiring patterns are miniaturized, it is easier and more accurate to form through holes by punching or the like than to form conductive bumps by printing.
- a plurality of unit substrates having the protruding portions are interposed via an insulating adhesive layer.
- the protruding portions penetrate the insulating adhesive layer and electrically connect the wiring pattern and the conductive material between the adjacent unit substrates. Therefore, regardless of the number of unit boards, the multilayer printed circuit board can be easily manufactured by electrically connecting the unit boards collectively by a single operation of crimping each unit board.
- the conductive substance filled in the through-holes of the unit substrate not only connects the wiring patterns of the adjacent unit substrates but also electrically connects the upper and lower wiring patterns of the filled unit substrate. It also plays the role of.
- the conductive material lead, tin, copper, nickel or an alloy containing these as a main component, for example, solder is suitable, and in addition, noble metals such as indium, gold, and silver can be used.
- FIG. 1 is an explanatory diagram showing the steps of the first embodiment.
- FIG. 2 is a plan view showing an outline of the manufactured resin sheet with filled vias.
- FIG. 3 is an explanatory sectional view showing another embodiment of the mold.
- FIG. 4 is an explanatory diagram showing the positional relationship between the pressing protrusions of the mold and the small pieces.
- FIG. 5 is an explanatory diagram showing the steps of the second embodiment.
- FIG. 6 is an explanatory diagram showing the steps of the third embodiment.
- FIG. 7 is an explanatory diagram showing the steps of the fourth embodiment.
- FIG. 8 is an explanatory view showing the steps of the fifth embodiment.
- FIG. 9 is an explanatory diagram showing the steps of the sixth embodiment.
- FIG. 10 is an explanatory diagram showing the steps of the seventh embodiment.
- FIG. 10 is an explanatory diagram showing the steps of the seventh embodiment.
- FIG. 11 is an explanatory view of a semiconductor device using a projecting portion of a field via as an external connection terminal.
- FIG. 12 is an explanatory diagram showing the steps of the eighth embodiment. You.
- FIG. 13 is an explanatory diagram showing the steps of the ninth embodiment.
- FIG. 14 is an explanatory diagram showing the steps of the tenth embodiment.
- FIG. 15 is an explanatory diagram of a state where the head of the filled via is crushed.
- FIGS. 23a to 23e are longitudinal sectional views showing a series of manufacturing steps of the printed circuit board of the present invention.
- FIG. 24 is a longitudinal sectional view showing the procedure of manufacturing the multilayer printed wiring board by laminating the unit substrates of FIG. 23 at a time, FIG. 24 a is before lamination, and FIG. 24 b is It is a figure which shows each state after lamination.
- FIG. 25 is an explanatory view showing a conventional filled via forming method.
- FIG. 26 is an explanatory diagram showing the configuration of the semiconductor device.
- FIG. 27 is a longitudinal sectional view showing a series of steps for manufacturing a multilayer laminated printed wiring board by a conventional build-up method.
- FIG. 1 shows a first embodiment of a manufacturing process of a resin sheet having filled vias.
- a mold having an upper mold 12 having a punch 10 formed thereon and a lower mold (base) 16 having a die hole 14 formed at a position corresponding to the punch 10 is used. Then, as shown in Fig. 1 (a), the resin — Conductor 18 and conductive metal sheet 44 that is the same thickness as resin sheet 18 or slightly thicker than resin sheet 18, with resin sheet 18 facing lower mold 16 Overlaid and supplied on the lower mold 16.
- the resin sheet 18 may be made of polyimide, polyester, polypropylene, polyphenylene sulfide, polyvinylidene, glass, epoxy, or BT resin sheet. .
- a solder sheet a copper sheet, a copper alloy sheet, a sheet in which a solder plating layer is formed on a metal sheet, or the like can be used.
- the stroke of the upper mold 12 is controlled so that the lower end of the punch 10 descends to a position substantially coincident with the lower surface of the conductive metal sheet 44, and does not descend any more.
- the punch 10 penetrates the conductive metal sheet 44 but does not reach the resin sheet 18.
- the resin sheet 18 was punched out by the punch 10 and was pushed downward by the punch 10 (pushed down).
- the resin sheet 18 was punched out by the small pieces 46 of the conductive metal sheet 44, and the punched hole (via As soon as 20 is formed, this small piece 46 remains in the punched hole 20 (locates). Therefore, a filled via 24 formed by filling the punched hole 20 with the small pieces 46 is formed.
- the upper mold 12 is raised. Further, by removing the conductive metal sheet 44, a resin sheet 18 having a filled via 24 filled with conductor pieces 46 as shown in FIG. .
- a printed wiring board forming sheet is obtained in which a small conductive metal piece having a shape substantially corresponding to the through hole is inserted inside the through hole.
- the upper mold 12 and the lower mold 16 may be relatively moved toward and away from each other. That is, the lower die 16 may be driven, or both the upper die 12 and the lower die 16 may be driven.
- the resin sheet 18 is formed by small pieces 46 of the conductive metal sheet 44.
- the upper and lower ends of the filled vias 24 are substantially flush with the upper and lower surfaces of the resin sheet 18.
- the filled via 24 has a slightly rounded tip (lower end) due to the resistance applied when the small piece 46 punches the resin sheet 18.
- the conductive metal sheet 44 When the conductive metal sheet 44 is a soft metal sheet such as solder, it tends to be slightly crushed during press working. Therefore, the conductive metal sheet 44 is slightly thicker than the resin sheet 18, and the filled vias 24 are formed on the upper and lower surfaces of the resin sheet 18 when crushed. It should be adjusted to be one.
- a conventional conductor paste is printed.
- the small pieces 46 are forcibly positioned in the punched holes 20 by the bunch 10 simultaneously with the formation of the punched holes 20. It is possible to fill (fill) the small pieces 46 as conductors in the punched holes 20.
- the upper die 12 and the lower die 16 each have a form in which one punch 10 and one die hole 14 are formed. It is also possible to form as many punches and die holes as the number of filled vias formed on the resin sheet 18. With this configuration, the resin sheet 1 can be formed by a single pressing operation of the mold. 8, a filled via can be formed, and the time required for forming a filled via can be reduced.
- FIG. 2 is a plan view showing an example of a resin sheet 18 having a filled via 24 manufactured.
- the resin sheet 18 with the required pattern of filled vias 24 formed on it Can be manufactured continuously.
- 19 is a hole for positioning and feeding.
- the resin sheet 18 having the filled vias 24 manufactured by this manufacturing method can be used as various electric materials. For example, a conductor layer is formed on one surface of the resin sheet 18 and this conductor layer is etched to form a wiring pattern electrically connected to the filled vias 24 (not shown).
- the resin sheet 18 having the wiring pattern formed thereon can be used as it is, for example, as a flexible printed circuit board (FPC). Further, if a plurality of resin sheets 18 on which the wiring patterns are formed are stacked while maintaining conduction between the wiring patterns by filled vias, a multilayer wiring board can be manufactured (not shown).
- the conductor layer 26 is formed by the same method as in the conventional example shown in FIG. 17 (a), by applying a plating method to both surfaces of the resin sheet 18 or by attaching metal foil.
- the layer 26 is etched to form a first pad 28, a second pad 32, a first wiring pattern 30 and a second wiring pattern 34 on both sides, and the semiconductor chip 36 is mounted.
- the semiconductor device 42 can be obtained by attaching the external connection terminal 40.
- FIG. 3 is a schematic cross-sectional view showing another example of the manufacturing die.
- a holding plate 15 is provided on an upper mold 12.
- the holding plate 15 is hung on the movable plate 11 by the spring 13, and is guided by the guide pole 17 so as to be able to contact and separate from the movable plate 11.
- the holding plate 15 is provided with a hole 21 through which the punch 10 can pass, and four holding protrusions 23 are provided around the hole 21.
- the metal sheet 44 is punched out by the punch 10 while the area around the punched part of the metal sheet 44 is pressed in advance by the holding projections 23, thereby suppressing the expansion of the metal sheet 4 at the time of punching. Therefore, there is an advantage that the volume of the small pieces 46 can be secured to a required amount. That is, when the metal sheet 4 4 is a soft metal such as solder, Elongation occurs at the time of punching, and there is a possibility that the small pieces 46 become thin. However, elongation can be prevented by pressing the periphery with the pressing projections 23.
- FIG. 4 schematically shows the positional relationship between the holding projections 23 and the small pieces 46, and the force around the small pieces 46 pressed by the four holding projections 23 is not limited to this.
- the mold illustrated above is an example in which the base and the punch are integrally formed so as to be relatively movable to form a mold.
- the punch and the base are, for example, an upper mold and a lower mold. It is not always necessary to form them as a pair of dies as in the above.
- the dies having a base in which a die hole is formed, and a punch (or a punch) provided independently of the dies.
- a vial forming apparatus for inserting small metal pieces can be used.
- the punch forms a punched hole in the conductive metal sheet together with the die hole formed in the base, and further pushes down the small piece of the punched conductive metal sheet, A through hole is also formed in the resin sheet.
- the lower end of the punch is controlled so as to stop at the surface of the resin sheet. Therefore, a small piece of the punched conductive metal sheet is formed in a through-hole formed in the resin sheet. It is held in the resin sheet while being pushed inside. Since the small metal pieces have conductivity, if a wiring pattern is formed on the front and back surfaces of the resin sheet, the conductive metal small pieces introduced into the through-holes cause the surface of the resin sheet and Circuits formed on the back surface can be electrically connected.
- FIG. 5 shows a second embodiment.
- the mold illustrated in FIG. 1 or FIG. 3 is used, but illustration of the mold is omitted.
- the same material as that of the first embodiment can be used. Note that the same mold, resin sheet 18 and conductive metal sheet 44 can be used in the third embodiment and below, which will be described later.
- the conductive metal sheet 44 is supplied onto the resin sheet 18 while the resin sheet 18 having the punched holes 20 is kept at the same position. Then, the upper mold 12 is lowered again, the metal sheet 44 is punched, and the punched small pieces 46 are pushed into the punched holes 20.
- the resin sheet 18 can be used for the same purpose as above.
- the metal sheet 44 is stretched without excessive force being applied to the metal sheet 44 at the time of the second press for punching the metal sheet 44.
- the conductor pieces 46 (filled * vias 24) with almost no collapse can be punched, and the punched holes 20 can be densely filled with metal.
- metal sheet 4 4 is solder This is effective for soft metal sheets such as.
- FIG. 6 shows a third embodiment.
- a resin sheet 18 having a conductive layer 26 such as a copper foil formed on one surface is used.
- the resin sheet 18 is placed on the lower mold 16 side. Supply in the mold.
- the upper die 12 is lowered and a metal sheet 44 is punched, and the conductive layer 26 and the resin sheet 18 are punched by the punched conductor small pieces 46, and the small pieces are inserted into the punched holes 20.
- a resin sheet 18 having filled vias 24 can be obtained as shown in FIG. 6 (b). Since the conductive layer 26 is thin, the conductive layer 26 and the resin sheet 18 can be punched out even if the small piece 46 is a soft metal such as solder.
- the conductive layer 26 is in electrical contact with the filled via 24 so as to be electrically conductive.
- the conductive layer 26 can be etched into a required pattern to form a resin sheet 18 having a wiring pattern electrically connected to the filled vias 24 (not shown).
- This resin sheet 18 can be used alone as a circuit board for FPC or the like, or can be used as a multilayer circuit board by laminating a plurality of sheets.
- FIG. 7 shows a fourth embodiment.
- a resin sheet 18 having a conductive layer 26 formed on one side is placed in a mold in the same manner as in the second embodiment. Then, a punched hole 20 is formed in the resin sheet 18.
- the metal sheet 44 is supplied onto the resin sheet 18 and pressed to punch out the metal sheet 44, and the punched small piece 46 is made of resin.
- the sheet 18 is pushed into the punched hole 20.
- a resin sheet 18 having field vias 24 (conductor pieces 46) similar to the third embodiment can be easily manufactured.
- a punched hole 20 is formed in advance on a resin sheet 18, and a small piece 4 6 of a metal sheet 44 punched by a second press working is pressed into the punched hole 20. Therefore, the small piece 46 can be positioned in the punched hole 20 with almost no deformation. Therefore, good connection between filled via 24 and conductive layer 26 can be ensured.
- FIG. 8 shows a fifth embodiment.
- a resin sheet 18 having a conductive layer 26 formed on both surfaces is used.
- the filled via 24 is in contact with both conductive layers 26.
- both conductive layers 26 By etching both conductive layers 26 into a required wiring pattern, it can be used as a circuit board or a semiconductor device.
- the tip (lower end) side of the filled via (conductor piece) 24 has a wakasen roundness, and the connection with the conductive layer 26 is incomplete as shown in FIG. 8 (c).
- a wedge-shaped punch (not shown) is driven into the rounded head as shown in FIG. 8 (d), and the head is pushed outward to connect with the conductive layer 26. It is preferable to ensure that
- FIG. 9 shows a sixth embodiment.
- a resin sheet 18 having conductive layers 26 formed on both surfaces is used.
- the resin sheet 18 is first supplied into a mold to form a punched hole 20 in the resin sheet 18.
- a metal sheet 44 is supplied onto a resin sheet 18, pressed to punch a metal sheet 44, and a punched small piece 46 is formed of a resin sheet.
- the sheet 18 is pushed into the punched hole 20.
- a resin sheet 18 having a filled via 24 (conductor piece 46) similar to that of the fifth embodiment of FIG. 8B can be easily manufactured.
- a wiping hole 20 is formed in advance on a resin sheet 18, and a small conductor piece 46 of a metal sheet 44 punched by a second press working is formed in the punching hole 20. Since the conductor pieces 46 are pushed in, the conductor pieces 46 can be positioned in the punched holes 20 with almost no deformation. Therefore, good connection between the filled via 24 and both conductive layers 26 can be ensured.
- FIG. 10 shows a seventh embodiment.
- the resin sheet 18 and the conductive metal sheet 44 are placed on top of each other on the base 16, and the upper mold 12 is lowered, and the conductive metal sheet 44 is placed on the resin sheet 18. With a punch 10.
- Control is performed so that the lower end of the punch 10 descends to a position substantially coincident with the lower surface of the conductive metal sheet 44, and does not descend any more.
- the punched hole 20 of the resin sheet 18 is formed. Inside, punched metal sheet 4 4 Small conductor piece 4 6 Force The lower end is positioned in a state of protruding from the punched hole 20 (a state protruding from the lower surface of the resin sheet 18).
- the lower end protrudes from the lower surface of the resin sheet 18 and the upper end is a filled via having a small piece 46 substantially flush with the upper surface of the resin sheet 18.
- a resin sheet 18 having 24 is formed.
- the conductive metal sheet conductor piece 46 protruding from the punched hole 20 of the resin sheet 18 is formed.
- the lower end can be used as an external connection terminal 40.
- a wiring pattern 30 including a node 28 is formed on the upper surface side of the resin sheet 18 to be connected to an upper end of the filled via 24, and a semiconductor chip 36 is mounted on the node 28. Since it is not necessary to form a wiring pattern or a bump on the lower surface side of the resin sheet 18, the manufacturing process can be simplified.
- the lower end of the conductive small piece 46 of the conductive metal sheet protruding from the punched hole 20 of the resin sheet 18 is formed when the punched hole 20 is formed in the resin sheet 18.
- the center is formed in a curved shape protruding from the peripheral portion.
- the resin sheet 18 having the filled vias 24 in the present embodiment can be used as a substrate material of the outermost layer on the mounting side of the circuit board on the mounting board.
- FIG. 12 shows an eighth embodiment.
- a resin sheet 18 is supplied into a mold and punched into a resin sheet 18 in the seventh embodiment.
- a hole 20 is formed.
- a metal sheet 44 thicker than the resin sheet 18 is supplied onto the resin sheet 18 and pressed to form a metal sheet.
- the sheet 44 is punched, and the punched conductor pieces 46 are pressed into the punched holes 20 of the resin sheet 18.
- a resin sheet 18 having a filled via 24 whose tip projects below the punched hole 20 can be manufactured, as shown in FIG. 10 (b).
- the punched hole 20 is formed in the resin sheet 18 in advance, it is possible to easily and surely position the filled * via 24 (the conductor piece 46) in the punched hole 20. it can.
- FIG. 13 shows a ninth embodiment.
- a resin sheet 18 having a conductive layer 26 such as a copper foil formed on one surface is used.
- a state in which a metal sheet 44 thicker than the resin sheet 18 is superimposed on the conductive layer 26 of the resin sheet 18 Then, the resin sheet 18 is supplied into the mold with the lower mold 16 side.
- the upper die 12 is lowered and a metal sheet 44 is punched, and the conductive layer 26 and the resin sheet 18 are punched by the punched small conductor pieces 46, and the small piece is inserted into the punched hole 20.
- a resin sheet 18 having a filled via 24 can be obtained. Since the conductive layer 26 is thin, the conductive layer 26 and the resin sheet 18 can be punched out even if the small conductor piece 46 is a soft metal such as solder.
- the conductive layer 26 is in electrical contact with the filled via 24 so as to be electrically conductive.
- the tip (lower end) of the filled * via 24 protrudes below the sheet.
- the conductive layer 26 can be etched into a required pattern to form a resin sheet 18 having a wiring pattern that is electrically connected to the filled vias 24 (not shown).
- This resin sheet 18 can also be used as the substrate material of the outermost layer on the mounting side of the circuit board on the mounting board.
- FIG. 14 shows the tenth embodiment.
- a resin sheet 18 having a conductive layer 26 formed on one side is supplied into a mold, and the resin A punched hole 20 is formed in the sheet 18 made of steel.
- a metal sheet 44 which is sufficiently thicker than the resin sheet 18 is supplied onto the resin sheet 18 and pressed to form a metal sheet. Then, the punched small piece 46 is pushed into the punched hole 20 of the resin sheet 18.
- a punched hole 20 is formed in advance on a resin sheet 18, and a small conductor piece 46 of a metal sheet 44 punched by a second press working is pressed into the punched hole 20.
- the conductor piece 46 can be positioned in the punched hole 20 with almost no deformation. Therefore, good connection between filled via 24 and conductive layer 26 can be ensured.
- both heads of the filled via 24 are crushed as shown in FIG. 15 and the head is spread outward in an umbrella shape, as shown in FIG. It is also preferable to prevent the hole from being punched out of the hole 20 and to make the connection with the conductive layer more secure.
- the resin sheet manufactured according to the present invention can also be used as a resin sheet having a filled via that transmits heat like a thermal via. can do.
- the resin die is placed on the base on which the die holes are formed.
- the sheet and the conductive metal sheet are placed in this order, and both are punched together by a punch, and the conductor pieces made of the punched conductive metal sheet are punched simultaneously to form a resin sheet.
- the resin sheet can be punched by pressing down a small piece of the punched conductive metal sheet. What is necessary is to penetrate the conductive metal sheet and stop at the surface of the resin sheet.
- the punch is pressed into contact with the conductive metal sheet to form a small conductor piece punched out of the conductive metal sheet.
- the punch stop position in the above device is controlled by a stop position control means for controlling the surface (first stop position) of the resin sheet, and a stop position (for forming a through hole by punching the resin film). It is preferable to have a stop position control means for controlling the second stop position.
- the resin sheet formed on the printed wiring board manufactured by the method of the present invention has small conductive metal pieces protruding from the surface thereof, an insulating layer is interposed therebetween. Then, by pressing the printed wiring board on which the protruding conductive metal pieces are formed, the protruding conductive metal pieces are electrically connected to the printed wiring boards stacked through the insulating layer. can do. That is, by using such a printed wiring board of the present invention, it is easy to manufacture a multilayer printed wiring board. Can be manufactured.
- the printed wiring board of the present invention is a two-metal TAB, a single-sided CSP or a double-sided CSP, a single-sided BGA or a double-sided BGA tape having a wiring pattern formed on one or both sides of an insulating substrate.
- the printed wiring board of the present invention has a through hole in the insulating substrate, and since the conductor is inserted into the through hole, the front and back surfaces of the insulating substrate can be electrically connected. Therefore, it is suitable as a printed wiring board having wiring layers on both sides. Therefore, such a printed wiring board of the present invention has an insulating substrate and at least one surface of the insulating substrate and, if necessary, wiring layers on both surfaces.
- a polyimide film is generally used as the insulating substrate, and the wiring layer is formed by laminating a conductive metal such as copper foil on the surface of the insulating substrate, for example, applying a photo resist, and applying the photo resist.
- a predetermined pattern is formed by exposure and development to a photo resist, and the photo resist can be formed by etching or the like as a masking material.
- a through hole is preferably formed in the insulating substrate on which such a wiring layer is formed by the method described above. Then, in the printed wiring board of the present invention, the through-holes thus formed are filled with a conductor.
- an insulative substrate is placed on the base using the above-described punch and a mold having a base having a die hole.
- a through hole may be formed in the insulating base material in advance, and the through hole may be filled with a conductor piece punched out of a conductor sheet in the same manner as described above.
- a foil or sheet of lead, tin, copper, a copper alloy or an alloy containing these as a main component is suitable.
- the present invention covers a wide range such as a TAB tape using a flexible polyimide or the like, a CSP, a BGA, an FPC, and a so-called multilayer substrate using a rigid substrate such as a glass epoxy. Applicable.
- a TAB tape particularly a method of manufacturing a so-called two-metal TAB tape having a wiring layer on both sides will be described.
- FIG. 17 is a process chart showing a general method for manufacturing a two-metal TAB tape. As shown in Fig. 17, sprocket holes are formed on the double-sided copper laminated polyimide tape by pressing. When a through hole is formed in advance, a through hole (through hole) or the like can be formed at the same time as forming the sprocket hole or the like.
- a photoresist is applied, and the photoresist is exposed and developed so that a desired pattern can be formed, and the developed photoresist is used as a masking material to form a metal.
- a wiring layer (wiring pattern) can be formed on the surface of the insulating base material.
- a wiring layer (wiring pattern) can be formed on the back surface of the insulating base material.
- a finish plating such as gold plating is performed to improve conduction reliability.
- a through hole (through hole) is formed by a punching press, and then the conductor is filled into the through hole by a punching press, and the conductor is electrically connected to the wiring layer or metal foil. Let it.
- the formation of the through hole by the punching press and the timing of filling the conductor are optional.
- a through hole may be formed, and then the through hole may be filled with a conductor.
- a through-hole may be first formed in the double-sided copper-applied tape, and a conductor may be filled in the through-hole formed simultaneously with the formation of the sprocket hole.
- the through hole is preferably formed using a punch and a mold having a base having a die hole as described in detail above.
- the formation of the through-holes by this method is based on punching that does not require desmearing, and a method for making an electrical connection uses an ordinary punching press as well as punching.
- this is a very simplified manufacturing process in which a conductor such as a solder plate or copper foil is overlaid on a substrate on which holes have been formed by punching, punched again, and the conductors are embedded in the holes, leading to cost reduction.
- the thickness of the substrate and the thickness of the conductor (plate) to be embedded (filled), the material (hardness) of the conductor (plate), the selection of post-processing such as punch stroke, caulking, etc. Set the conditions.
- a solder-copper foil is suitable for the material of the conductor. It is preferable to select a metal having an appropriate hardness so that unevenness does not easily occur. For example, if the height of the body is too high, unevenness tends to occur on the substrate itself.
- the solder is soft and can be used as it is.
- the metal to be inserted into the through-hole may be a metal capable of forming an electrical connection. For example, considering the cost, it is easy to recycle the solder, which is advantageous in terms of cost. is there.
- the stroke of the punching is actually punched, so that the conductor is in a state of so-called skewering with respect to the substrate, and the stroke is determined so as to be convenient for subsequent tightening.
- caulking after filling (embedding) the conductor is a process that affects the reliability of conduction.
- transport and work in the subsequent steps are performed smoothly, or, for example, in the case of a tape-shaped substrate, it is often wound on a reel or the like in the subsequent steps
- durability corresponding to such bending is also exhibited.
- FIG. 17 shows a schematic cross-sectional view of the through-hole portion of the printed wiring board according to the present invention thus obtained.
- 201 is an insulating substrate
- 202 Indicates a wiring layer
- 203 indicates a conductor.
- the wiring layers 202 on both the front and back surfaces and the conductor show good electrical connection.
- the present invention is widely applied to a TAB tape using a flexible polyimide or the like, a CSP, a BGA, an FPC, or a so-called multilayer substrate using a rigid substrate such as a glass epoxy. It is possible.
- a conductive material (conductor) corresponding to the conventional conductive bumps is formed.
- a through hole (through hole) is formed by filling the through hole with the conductor (conductive substance), and at least one of both ends of the conductor (conductive substance) in the through hole has a wiring pattern or
- the printed circuit board (unit board) can be formed so as to protrude from the insulating sheet surface.
- This unit substrate can be made conductive in the thickness direction by a conductor protruding from the unit substrate. Therefore, by using this unit substrate, a large number of unit substrates are laminated and a multilayer laminated printed wiring board in which the parenthesis unit substrate is electrically connected is formed. can do.
- the protruding portion penetrates through the insulating adhesive layer and an adjacent unit substrate is bonded. Electrically connect wiring patterns and conductive substances between them. Therefore, regardless of the number of unit boards, the multilayer printed circuit board can be easily manufactured by electrically connecting the unit boards collectively by a single operation of crimping each unit board.
- the conductor pieces filled in the through holes of the unit board not only connect the wiring patterns of the adjacent unit boards but also electrically connect the upper and lower wiring patterns of the filled unit board. It also plays a role. Suitable conductor pieces (conductive materials) are lead, tin, copper, nickel, copper alloys or alloys containing these as main components, for example, hangs, and other precious metals such as indium, gold, and silver. Can also be used.
- a material used as a substrate in a normal printed circuit board can be used without limitation. For example, polyimide resin is desirably used.
- the material and the forming method of the wiring pattern are not particularly limited, and a desired wiring pattern may be formed by forming a copper-clad layer, masking by applying a photoresist, exposing, developing, and etching. If necessary, a wiring pattern can be similarly formed on the other surface of the unit substrate to obtain a unit substrate having a wiring pattern on both surfaces.
- the number of through holes to be generated depends on the number and location of wiring patterns that require electrical connection, and it is desirable that the diameter be as small as possible within the range where sufficient electrical connection is ensured. .
- the formation of the through-hole in the unit substrate and the filling of the small conductor (conductive material) into the through-hole are performed by first forming the through-hole using a mold or the like, and then inserting the small conductor into the through-hole. It is desirable to fill the conductive material) with a conductive metal sheet (the same material as the conductive material) that has a through hole opened using a mold or the like and placed between the mold and the unit substrate. May be made to enter into the through-hole by a punching press to be filled.
- a punching press May be made to enter into the through-hole by a punching press to be filled.
- Punching which is preferably used for forming a through hole and filling a conductor piece, may be performed in the same manner as in the past, and the operation itself is simple, but the thickness of the conductive material excluding the thickness of the protrusion (t) 1) and the thickness (t2) of the insulation sheet of the unit substrate, and the selection and setting of post-processing such as tightening must have the same relationship as t1 and t2 above. preferable. That is, the relationship between the thickness (t 1) of the conductor sheet and the thickness (t 2) of the insulating sheet is preferably 1.4 X t 2 ⁇ tl ⁇ 0.7 X t 2, and more preferably 1.2 X t 2. t 2 ⁇ t 1 ⁇ 0.9 X t 2 By setting the thickness of the conductor sheet and the insulation sheet as described above, unevenness is less likely to occur. In addition, sufficient electrical connection can be ensured.
- the protruding length of the protrusion formed on at least one of the upper and lower sides of the conductor piece (conductive material) depends on the thickness of the insulating adhesive layer to be used, but is usually about 10 to 50 Ozm. Is appropriate.
- the protrusion may be provided above or below the conductive material, and when multiple conductor pieces are formed, some of them protrude. The portion may not be formed.
- thermosetting resin that is not completely cured, that is, a so-called pre-predator.
- a hot melt type that is, a thermoplastic resin can also be used.
- a plating layer may be formed so as to extend between the conductor and the wiring pattern, or both or one of them may be connected to the wiring pattern. It is also possible to reflow and alloy the contact interface between the two to make the electrical connection more secure.
- the multilayer printed wiring board manufactured by the present invention can be applied to various printed circuit boards using rigid circuit boards such as glass epoxy, in addition to TAB tape, CSP, BGA, and FPC.
- Figures 23a-e show a series of single printed circuit boards (unit boards). It is a longitudinal cross-sectional view which illustrates a manufacturing process.
- a laminate (CCL, Copper Clad Laminate) called a two-layer type is used in which a copper-clad layer 212 is coated on both upper and lower surfaces of an insulating sheet 211 made of polyamide or the like (Fig. 23a).
- a three-layer type laminate in which an adhesive layer is positioned between the insulating sheet 211 and the copper-clad layer 212 may be used, but a laminate having such an adhesive layer may be used. In some cases, the adhesive may adhere to the punch used and the operability may be reduced.
- the copper clad layer 212 is masked and etched with an appropriate reagent to form a wiring pattern 213 on the surface of the insulating substrate (FIG. 23B). After this operation, a through hole is formed by one of two different methods (FIG. 23c or FIG. 23d), and the through hole is filled with a conductor.
- a conductive metal sheet 214 made of the same material as the conductor is positioned above the insulating sheet 211 on which the wiring pattern 213 is formed, and further separated therefrom.
- a punching die 215 having the same diameter as the through hole to be opened is positioned, and the conductive metal sheet 214, the wiring pattern 213, and the insulating sheet 211 are punched by the die 215 by a press machine, and the wiring is performed.
- a through-hole 216 is opened in the pattern 213 and the insulating sheet 211, and the conductive metal sheet 214 is inserted into the through-hole 216 to form the through-hole 216 as a part of the conductive material 217 of the conductive metal sheet.
- the tip of the conductive substance 217 forms a projecting portion 218 projecting from the lower wiring pattern 213 to form a unit substrate 219 (FIG. 23E).
- the wiring pattern 213 of FIG. 23D After using the same mold as in Figure 23c to open the through hole 216 in the insulating sheet 211 that has the conductive sheet 212, place the conductive metal sheet 214 above the insulating sheet 211 and use it to form the through hole 216.
- the conductive metal sheet 214 is punched by the press 215 by a press machine to fill the through-hole 216 with a part of the conductive metal sheet 214, and A protruding portion 218 protruding from the lower wiring pattern 213 at the tip end of the conductive material 217 is formed to constitute a unit substrate 219 (FIG. 23E).
- FIG. 24 is a vertical cross-sectional view showing the procedure for manufacturing the multilayer printed circuit board by laminating the unit boards manufactured in FIG. 23 in a lump, and FIG. 4b shows each state after lamination.
- FIG. 24a a total of four unit boards are spaced apart, and the top unit board 19 is the same as the unit board 219 in FIG. 23e.
- the other three unit boards 219a, 219b, and 219c are the same as the top unit board except for the wiring pattern and the opening position of the through hole.
- the members of the unit boards 219 a, 219 b, and 219 c other than the top unit are respectively given the suffixes a, b, and c for the reference numerals of the members attached to the top unit unit board 219. The description is omitted.
- the drawing shows an example in which the wiring pattern 213 is already formed as the uppermost unit substrate 219, only the uppermost unit substrate 219 is collectively laminated without forming the wiring pattern 213, and thereafter,
- the wiring pattern 213 may be formed on the uppermost unit substrate 219.
- the three insulating adhesive layers 220, 220a, 220b are located between the four unit boards 219, 219a, 219b, 219c, which are stacked in sequence at a distance, and The through hole 216 on the left side of the unit board 219 and the second unit
- the through hole 216a on the left side of the unit board 219a is located at the same position, and the other through hole 216a of the second unit board 219a is connected to the through hole 216b on the left side of the third unit board 219b. It is at the same position, and the other through hole 216b of the third unit board 219b is at the same position as the right through hole 216c of the lowest unit board 219c.
- the four unit substrates and the three insulating adhesive layers are set on a press machine with a heating, pressing, and cooling mechanism, and heated and pressed for pressure bonding. After being cooled and then taken out of the press, a multilayer printed wiring board 221 is obtained as shown in FIG. 24b.
- the following electrical connection is formed.
- the lower end protrusion 218 of the conductor 217 in the through hole 216 on the left side of the uppermost unit substrate 219 in FIG. 24a penetrates the uppermost insulating adhesive layer 220 and the second unit A new conductor (217 + 217a) is integrated with the conductor 217a in the through hole 216a on the left side of the board 219a, and the wiring pattern 213 of the top unit board 219 is the second and the second. It is electrically connected to the wiring patterns 213a and 213b of the third unit board 219a and 219b.
- the protrusion 218a of the conductor 217a in the through hole 216a on the right side of the second unit board 219a in FIG. 24a is connected to the through hole 216 on the left side of the third unit board 219b.
- a new conductor (217a + 217b) is integrated with the conductor 217b of the second unit 213b, and the wiring pattern 213a of the second unit board 219a and the third and lowermost unit board 219b, It is electrically connected to the wiring patterns 213b and 213c of 219c.
- a new conductor (217b + 217C) is formed between the third and lowermost unit boards 213b and 213c. Has been established.
- the conductor even if the conductor is not integrated with other conductors, such as the conductor 217 in the through hole 216 on the right side of the uppermost unit board 219 in FIG. 24a, the conductor penetrates the insulating adhesive layer 220 located thereunder. Then, it comes into contact with the wiring pattern 213a of the second unit board 219a, and an electrical connection is formed between the top unit and the second unit board 219a.
- punching and filling of field vias can be simultaneously performed by one press working, so that the manufacturing process can be simplified and cost can be reduced.
- the small piece can be easily and reliably positioned in the punched hole by the second press.
- the printed wiring board of the present invention has high reliability of the electrical connection between the front and back conductor layers.
- the manufacturing method of the present invention makes the process extremely simple compared to the conventional plating method and conductive paste printing method, and enables cost reduction. Also, it can be manufactured by dry process Therefore, no waste liquid is used and the materials used can be recycled, which is an excellent method from the viewpoint of environmental conservation.
- the printed circuit board of the present invention comprises: an insulating sheet having a wiring pattern formed on both sides or one side; and a conductor filled in a through hole penetrating the wiring pattern and the insulating sheet.
- a printed circuit board characterized in that at least one end face of the body protrudes from a surface matching the insulating sheet and Z or the wiring pattern.
- This printed circuit board is particularly useful as an intermediate for producing a multilayer printed wiring board by laminating a plurality of printed circuit boards.
- a plurality of such printed circuit boards are laminated via an insulating adhesive layer, and these are press-bonded to obtain a multilayer printed wiring board which is collectively laminated.
- the protruding portion of the conductive material penetrates the insulating adhesive layer, and the wiring pattern of the adjacent unit substrate, or the adjacent unit unit electrically contacting the conductive material between adjacent unit substrates, that is, all of the multilayer stack
- the printed circuit boards are connected in a desired electrical relationship, and if necessary, the connection between the upper and lower wiring patterns of each unit board can be secured at the same time.
- a multilayer printed wiring board having a desired wiring pattern and electrical connection can be subjected to a single crimping operation. Can be stacked at once.
- an insulating sheet having a wiring pattern formed on both surfaces or one surface is filled with a through-hole by a conductor.
- the printed circuit boards are formed so as to protrude to form a printed circuit board, and the plurality of printed circuit boards are laminated via an insulating adhesive layer, and the plurality of printed circuit boards are laminated.
- multilayer printed wiring boards can be collectively laminated by a single crimping operation, so that the process is extremely simple and the cost can be reduced as compared with the conventional build-up method. Become. Furthermore, since it can be manufactured in a dry process, no waste liquid is generated, the materials used can be recycled, and it is an excellent method from the viewpoint of environmental conservation.
- FIG. 19 is a front view of a two-metal TAB tape
- FIG. 20 is an enlarged view near the land.
- FIG. 21 is a perspective view from the back of the 2-metal TAB tape
- Figure 22 is an enlarged view near the land.
- 204 indicates a 2-metal TAB tape
- 205 indicates a sprocket hole
- 206 indicates a land.
- the wiring layer on the back surface is not shown.
- the land means a place where a through hole (through hole) is formed and a conductor is filled. Using a punching press, this tape with wiring layers formed on the front and back surfaces was etched to form through holes at the positions shown in FIGS. 19 and 21.
- a solder plate with a thickness of 95 m is stacked on the tape, and the punching press is performed again to embed (fill) the solder. Took.
- Fig. 17 which is a schematic cross-sectional view of the 200 ⁇ hole, ideal contact between the wiring layer and the conductor was observed, and in each of the through holes, sufficient conduction as 2-metal TA ⁇ was observed. (A 10 m ⁇ hole) was obtained.
- Example 1 was repeated except that the filling (filling) of the conductor into the through hole was performed not after forming the wiring by etching or the like, but after forming the through hole (through hole) in advance and then forming the sprocket hole and simultaneously filling the conductor.
- a two-metal TAB tape was obtained by the same process as described above.
- a copper-clad layer is patterned on both sides of a polyimide resin with a thickness of 25 zm.
- a total of 400 through holes having a diameter of 0.1 mm were formed in a two-layer type CCL on which a wiring pattern was formed by using a mold and a pressing machine.
- a conductive metal sheet made of high-temperature solder is placed on this CCL, the sheet is punched using the mold, and the above-mentioned copper is aligned with the CCL on the upper side of the CCL, and on the lower side of the CCL.
- a unit substrate was embedded in the through hole so as to protrude from the CCL by about 100 m.
- thermosetting adhesive layer that does not contain glass fiber and has a thickness of about 40 m; and a heating, pressurizing, and cooling mechanism are provided. It was set in a press having the same, heated and pressurized at 150 ° C. and 2 atm for 10 minutes to be laminated at a time, and cooled to room temperature over 10 minutes while maintaining the pressure.
- the electrical resistance between the wiring patterns on the upper and lower surfaces of the unit substrate of the obtained batch laminated multilayer printed wiring board and the electrical resistance between the wiring patterns between adjacent unit substrates via the adhesive layer are both 2 averages.
- the resistance was as low as ⁇ .
- the resulting multilayer printed circuit board was immersed in 260 ° C oil for 10 seconds, and then immersed in 20X: 20 oil. The cycle of immersion for 100 seconds was repeated for 100 cycles. No defect occurred on the multilayer printed wiring board even after the test, and reliability was confirmed.
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00922937A EP1107654A4 (en) | 1999-05-25 | 2000-05-01 | FILM FOR CONDUCTOR PLATE, METHOD FOR PRODUCING A CONTACT HOLE, FILLED CONTACT HOLE RESIN FOIL, PCB AND METHOD FOR THE PRODUCTION THEREOF |
AU43167/00A AU4316700A (en) | 1999-05-25 | 2000-05-01 | Sheet for printed wiring board, method of forming via, resin sheet having filledvia, printed wiring board and method of manufacturing the same |
US10/728,177 US7178233B2 (en) | 1999-05-25 | 2003-12-04 | Process for producing a collapsed filled via hole |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11/144275 | 1999-05-25 | ||
JP11144275A JP2000332369A (ja) | 1999-05-25 | 1999-05-25 | プリント回路板及びその製造方法 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09744424 A-371-Of-International | 2000-05-01 | ||
US10/728,177 Division US7178233B2 (en) | 1999-05-25 | 2003-12-04 | Process for producing a collapsed filled via hole |
Publications (1)
Publication Number | Publication Date |
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WO2000072644A1 true WO2000072644A1 (fr) | 2000-11-30 |
Family
ID=15358310
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2000/002879 WO2000072644A1 (fr) | 1999-05-25 | 2000-05-01 | Feuille pour carte de circuits imprimes, procede de formation de trou d'interconnexion, feuille de resine a trou d'interconnexion charge, carte de circuits imprimes et procede de fabrication associe |
Country Status (6)
Country | Link |
---|---|
US (1) | US7178233B2 (ja) |
EP (1) | EP1107654A4 (ja) |
JP (1) | JP2000332369A (ja) |
KR (1) | KR100458415B1 (ja) |
AU (1) | AU4316700A (ja) |
WO (1) | WO2000072644A1 (ja) |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002089540A1 (fr) * | 2001-04-24 | 2002-11-07 | Mitsui Mining & Smelting Co., Ltd. | Carte de circuits imprimes |
EP3703474A1 (en) * | 2019-02-26 | 2020-09-02 | NHK Spring Co., Ltd. | Method for producing a circuit board |
CN116437578A (zh) * | 2023-06-13 | 2023-07-14 | 江油星联电子科技有限公司 | 一种印刷电路板生产用贯孔装置 |
CN116437578B (zh) * | 2023-06-13 | 2023-09-15 | 江油星联电子科技有限公司 | 一种印刷电路板生产用贯孔装置 |
Also Published As
Publication number | Publication date |
---|---|
US20040111882A1 (en) | 2004-06-17 |
EP1107654A1 (en) | 2001-06-13 |
KR20010083143A (ko) | 2001-08-31 |
US7178233B2 (en) | 2007-02-20 |
JP2000332369A (ja) | 2000-11-30 |
AU4316700A (en) | 2000-12-12 |
EP1107654A4 (en) | 2006-05-24 |
KR100458415B1 (ko) | 2004-11-26 |
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