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Publication numberUS3608711 A
Publication typeGrant
Publication dateSep 28, 1971
Filing dateOct 6, 1969
Priority dateOct 6, 1969
Publication numberUS 3608711 A, US 3608711A, US-A-3608711, US3608711 A, US3608711A
InventorsMordechai Wiesler, John S Maclntyre
Original AssigneeTeledyne Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Package for electronic devices and the like
US 3608711 A
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Description  (OCR text may contain errors)

United States Patent [72] lnventors Mordeehai Wiesler Lexington; John S. Maclntyre, Lynntield, both 01 Mass.

[211 App]. No. 866,793

[22] Filed Oct. 6, 1969 [45] Patented Sept. 28, 1971 [73 Assignee Teledyne, Inc.

Hawthorne, Calif.

- Continuation-impart of application Ser. No.

665,635, Sept. 5, 1967, now Patent No. 3,497,948,'dated Mar. 3, 1970, and a continuation-in-part of 785,209, Dec. 19, 1968.

[54] PACKAGE FOR ELECTRONIC DEVICES AND THE Primary Examinerwilliam T. Dixson, Jr. Attorney-Morse, Altman & Oates ABSTRACT: Small, fragile products such as transistors,

diodes and integrated-circuit dice are packaged on a tape which may be indexed through various production stages. The tape is formed with spaced apertures closed on one side by means of a pressure-sensitive adhesive wall bonded to one side of the tape. Devices are dropped onto the wall and adhere thereto. Sprocket holes are formed along the marginal edge of the tape for engagement with an indexing drive mechanism.

LIKE I 1 Claims, 5 Drawing Figs.

[52] US. Cl 206/56 A [51] Int. Cl. B65d85/30, B65d 73/02 l4 [IO PATENTEU SEP28 I97! FIGQ2 FIG.4

E113 m ning INVENTORS MORDECHAI WIESLER JOHN S. MACINTYRE ATTORNEYS PACKAGE FOR ELECTRONIC DEVICES AND THE LIKE CROSS-REFERENCE TO RELATED APPLICATIONS This application is a continuation-in-part of U.S. application Ser. No. 665,635 filed Sept. 5, 1967 entitled Method & Apparatus for Sorting Semiconductor Devices, now U.S. Pat. No. 3,497,948 dated Mar. 3, 1970 and of U.S. application Ser. No. 785,209 filed Dec. 19, 1968 entitled Die Sorting System," both applications being commonly assigned to the assignee of the present application.

Background of the invention 1. Field of the invention This invention relates generally to the packaging of small, fragile products such as electronic devices and more particularly is directed towards a new and improved package for use in the testing, sorting and packaging of individual semiconductive dice formed from monolithic wafers.

2. History of the Prior Art in the production of semiconductive devices, particularly integrated circuits, there has been a need for a simple and efficient packaging system. Integrated-circuit dice are extremely small, light and fragile and heretofore have presented problems in handling and packaging by reason of their physical characteristics. It is an object of the present invention to provide a packaging system for small, fragile products and particularly semiconductor dice wherein the dice may be individually packaged for convenient storage and handling or for transfer operations from stage to stage in an assembly process.

Summary of the Invention This invention features a package for fragile devices such as semiconductive dice and is comprised of a flexible strip of material of a thickness exceeding that of the device to be packaged and fonned with longitudinally spaced openings, closed on one side by means of a pressure sensitive wall on which the device is deposited and held. Sprocket holes are provided for indexing the tape through a feed mechanism. The tape may be rolled up for storage or shipment without damage to the parts.

Detailed Description of the Drawings FIG. 1 is a fragmentary view in perspective showing a section of packaging tape made according to the invention,

FIG. 2 is a view in side elevation thereof,

FlG. 3 is a sectional view in side elevation thereof,

FIG. 4 is a cross-sectional view taken along the line 4-4 of FIG. 1, and,

H6. 5 is a top plan view thereof.

Detailed Description of the preferred Embodiment Referring now to the drawings the reference character generally indicates a small fragile product such as an integrated circuit die packaged by a tape 12 for storage, shipment or transfer through processing and assembling stations. The tape 12 is characterized by a plurality of openings 14 evenly spaced along the length of the tape 12 and each of a size sufficient to receive a device 10. Applied to the rear or bottom face of the tape 12 is a stratum 16 of pressure-sensitive adhesive which closes one side of e openings 14 to form a pocket for the part 10. The adhesive serves not only to bond the stratum 16 to the bottom face of the tape but also serves as a mounting means for holding the part 10 in position once deposited in the pocket.

Formed along one marginal edge of the tape 12 are sprocket holes 18 for engaging a driving sprocket wheel in an indexing mechanism by which the tape is advanced longitudinally through various assembly stations.

In practice, the tape 12 is of a thickness at least equal to and preferably greater than the thickness of the part 10 which is packaged. As best shown in FIG. 3 this feature will provide clearance between the top of the part 10 and the upper surface of the tape. Thus the top surface of the part 10 will be protected against abrasion or the like should the tape be wound up into a roll insofar as the top will not contact a facing convolution of the rolled tape, it is also desirable that the opening 14 be somewhat larger than the lateral dimensions of the part 10, not only to permit receiving a wide range in sizes of parts, but also to provide clearance for transfer mechanisms and the like employed to deposit parts in the pockets and remove the same therefrom.

While various materials including metal may be employed for the tape 12a polyester such as sold under the trademark MYLAR has been found to be particularly satisfactory since it provides longitudinal stability, provides protection against crushing, distortion and the like and is easy to handle, particularly with respect to threading the tape to an indexing mechanism.

The stratum 16 preferably is quite thin and its adhesive layer should have low tack characteristics suflicient to hold the part in position during handling yet permit a clean, easy release of the part when required. A polyvinyl chloride stratum 16 of perhaps 1.5 mils thickness and an adhesive stratum of low tack characteristics also 1.5 mils thickness may be employed to advantage. Typically the die 10 will range in size from 4 to 6 mils in thickness and perhaps 15 mils square to 40 X60 mils.

The tape 12 should therefore exceed the 6 mils thickness of the part and may be on the order of 10 inils or so, for example.

The openings 14 may be circular as shown or may be of other configurations such as square, for example. The pressure-sensitive stratum 16 preferably is narrower in width than the tape 12 to leave the sprocket hole margin of the tape clear for free access to the sprocket holes.

Some pressure-sensitive adhesives lose most of their tackiness at low temperatures although a small release force may still be required. While cold release is not necessary it may be found useful in certain applications, Adhesives of this nature must exhibit a marked change in viscosity with temperature. in this way a soft tacky material can be frozen into a hard brittle one. Certain combinations of polymers and tackifier resins are well suited for the formation of these adhesives.

The polymers must be thermoplastic; that is they must soften when heated and harden when cool. The ethylene vinyl acetate copolymer such as Dupont Elfax resins are thermoplastic materials which are quite suitable for this particular application. The tackifier resins also must be themtoplastic. It has been found that the combination of two resin derivatives, namely Staybilite, Ester 3 and Staybilite Ester 10 works well, these products being made by Hercules Powder Co. Optimum formulation has been found to be 30 parts by weight of Elfax 150, 10 parts by weight of Staybilite Ester 3, and 60 parts by weight of Staybilite Ester 10.

The ingredients are first blended in a molten state at 300 F. and then dissolved in a toluene for coating on the tape. A 30 percent solution is used for coating and an adhesive film between 0.75 and 1.0 mils works well.

Numerous modifications may be made to the invention. For example, sprocket drive holes can be provided along both margins of the tape and multiple rows of pockets for the parts 10 may be provided Also, while a top cover is not necessary it may be found useful to apply a pressure-sensitive adhesive ply to the top of the tape once the parts have been deposited in their respective pockets, the cover tape, of course, having to be removed prior to removal of the part. Further, in place of through holes closed by the adhesive ply to form pockets, the tape may be formed with spaced depressions and a patch of adhesive deposited at bottom thereof.

Having thus described the invention what I claim and desire to obtain by Letters Pat. of the U.S. is:

l. A package for fragile objects such as integrated circuit dice and the like, comprising:

a. a longitudinally flexible elongated tape formed with a plurality of spaced pockets in one face thereof, each said pocket defining an opening larger than the lateral dimension of each said fragile object, each said pocket having a depth at least equal to the thickness of each said fragile object; and

b. an adhesive stratum disposed in each said pocket for mounting said fragile object depositing therein, each said fragile object secured within each said respectively, by said adhesive stratum.

2. A package according to claim 1 wherein said stratum is pressure sensitive.

3. A package according to claim 1 wherein said tape is formed with sprocket holes spaced lengthwise along said tape.

4. A package according to claim 1 wherein said tape is formed with openings spaced along said tape and a stratum of pressure sensitive adhesive tape is mounted along one face of the tape to close one side of said opening to form said pockets.

5. A package according to claim 1 wherein said tape is plastic.

6. A package according to claim 1 wherein said tape is metal.

7. A package according to claim 5 wherein said plastic is polyester.

8. A package according to claim 6 wherein said metal is stainless steel.

9. A package according to claim 1 including a removable stratum applied to said tape over the pocket openings.

10. A package according to claim 2 wherein said stratum is of a low tack characteristic.

11. A package according to claim 1 wherein the depth of said pockets is greater than the thickness of said objects.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2963805 *Sep 3, 1957Dec 13, 1960Boeing CoPorcelain enameled foil labels
US3047144 *Oct 10, 1960Jul 31, 1962Joseph A WisselAd-token card
US3335852 *Dec 11, 1963Aug 15, 1967Nippon Electric CoMounting assembly supporting semiconductor devices
US3339719 *Oct 12, 1965Sep 5, 1967Thomas & Betts Co IncTerminal tape
US3465874 *Jun 12, 1967Sep 9, 1969Hugle FrancesCarrier for semiconductor devices
US3494459 *Jun 10, 1968Feb 10, 1970Fluoroware IncCarrier for integrated circuit chips
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3695414 *Nov 27, 1970Oct 3, 1972Teledyne IncDie sorting system
US3698076 *Aug 3, 1970Oct 17, 1972Motorola IncMethod of applying leads to an integrated circuit
US3858721 *Aug 24, 1973Jan 7, 1975Western Electric CoLoading of compliant tape
US3859723 *Nov 5, 1973Jan 14, 1975Microsystems Int LtdBonding method for multiple chip arrays
US3871936 *Aug 24, 1973Mar 18, 1975Western Electric CoLoading of compliant tape
US3871945 *Mar 12, 1973Mar 18, 1975Ferranti Packard LtdMagnetically actuable element
US3920121 *Apr 13, 1972Nov 18, 1975Minnesota Mining & MfgElectric terminal carrier tape and method of manufacture
US4015708 *Nov 21, 1975Apr 5, 1977Gould Inc.Button cell storage and merchandising package
US4069916 *Jun 1, 1976Jan 24, 1978Western Electric Co., Inc.Tape for holding electronic articles
US4099615 *Feb 26, 1976Jul 11, 1978Amp, IncorporatedCarrier strip mounted electrical components
US4193287 *Mar 30, 1978Mar 18, 1980Fairchild Camera And Instrument CorporationAdhesive strips
US4354337 *Feb 28, 1980Oct 19, 1982Matsushita Electric Industrial Co., Ltd.Apparatus for packaging electrical circuit components
US4406367 *Aug 17, 1981Sep 27, 1983U.S. Philips CorporationPackage for electrical and/or electronic components
US4450959 *Oct 16, 1981May 29, 1984Siemens AktiengesellschaftPackaging for electrical components
US4657137 *May 22, 1981Apr 14, 1987North American Philips CorporationMulti-chip packaging system
US4724958 *Dec 19, 1986Feb 16, 1988Murata Manufacturing Co., Ltd.Tape-like electronic component package
US4805771 *Jul 17, 1987Feb 21, 1989Siemens AktiengesellschaftBelt for machine delivery of piece goods, especially electrical components and modules in automatic circuit board assembly machines
US4887981 *Nov 25, 1987Dec 19, 1989Augat Inc.Electronic socket carrier system
US4898275 *May 25, 1989Feb 6, 1990Minnesota Mining And Manufacturing CompanyNon nesting component carrier tape
US4929486 *Jul 25, 1988May 29, 1990Fsk Kabushiki KaishaCover tape for sealing chip-holding parts of carrier tape
US4994300 *Dec 7, 1989Feb 19, 1991Lintec CorporationMethod of making a cover tape for sealing chip-holding parts of carrier tape
US5025923 *Jul 20, 1987Jun 25, 1991Tokujiro OkuiPackage for electronic parts
US5064064 *Nov 6, 1990Nov 12, 1991Lintec CorporationCover tape for sealing chip-holding parts of carrier tape
US5203143 *Mar 28, 1992Apr 20, 1993Tempo GMultiple and split pressure sensitive adhesive stratums for carrier tape packaging system
US5284790 *Jan 30, 1992Feb 8, 1994Karpinski Arthur AMonolithic substrate with one or more grooves, depositing metallization layer setting laser diodes in grooves
US5524765 *Nov 15, 1994Jun 11, 1996Tempo GCarrier tape packaging system utilizing a layer of gel for retaining small components
US5667073 *Aug 23, 1996Sep 16, 1997Okui; TokujiroCarrier tape for storage use of electronic components
US5765692 *Nov 13, 1995Jun 16, 1998Minnesota Mining And Manufacturing CompanyCarrier tape with adhesive and protective walls
US5769237 *Jul 15, 1996Jun 23, 1998Vichem CorporationTape carrier for electronic and electrical parts
US5833073 *Jun 2, 1997Nov 10, 1998Fluoroware, Inc.Tacky film frame for electronic device
US5908114 *Sep 9, 1997Jun 1, 1999Gelpak, LlcTape carrier for electronic and electrical parts
US5960961 *Aug 3, 1998Oct 5, 1999Tempo GTab means to assure ready release of singulated wafer die or integrated circuit chips packed in adhesive backed carrier tapes
US6357594Jun 30, 1998Mar 19, 2002Tempo GMeans to assure ready release of singulated wafer die or integrated circuit chips packed in adhesive backed carrier tapes
US6389672 *May 7, 1997May 21, 2002Matsushita Electric Industrial Co., Ltd.Component assembling method and component assembling apparatus
US6554137 *May 30, 2000Apr 29, 2003Agere Systems Inc.Device and method for protecting electronic component
US6606789 *Apr 18, 2001Aug 19, 2003Telefonaktiebolaget Lm Ericsson (Publ)Method and apparatus in a production line
US6655021 *Apr 5, 2001Dec 2, 2003Telefonaktiebolaget Lm Ericsson (Publ)Method and apparatus for improving mounting
US6929132Aug 12, 2003Aug 16, 2005James G. BeltDisplay strip
US7097040 *Aug 5, 2005Aug 29, 2006Charles GutentagAdhesive backed carrier tape with calibrated levels of low tack adhesion for retention of small components
US7318876Aug 23, 2004Jan 15, 2008James BeltApparatus and method for producing a pre-loaded display strip
US8132673 *Mar 7, 2008Mar 13, 2012Charles GutentagMethod and apparatus for retention of small components on adhesive backed carrier tape
US20110114450 *Nov 12, 2010May 19, 2011Ev Group E. Thallner GmbhTransport system for accommodating and transporting flexible substrates
DE2821623A1 *May 18, 1978Nov 23, 1978Tdk Electronics Co LtdBehaeltnisrohstueck und aufnahmebehaeltnis fuer an einem band angebrachte elektronische komponenten
DE2949196A1 *Dec 6, 1979Jul 3, 1980Murata Manufacturing CoAufnahmevorrichtung fuer elektronische bauelemente in chip-form und verfahren zur serienweisen bereitstellung solcher bauelemente fuer fertigungsprozesse o.dgl.
DE3135075A1 *Sep 4, 1981Mar 25, 1982Philips Nv"verpackung fuer elektrische und/oder elektronische elemente"
DE10044418A1 *Sep 8, 2000Apr 18, 2002Siemens AgBestückelemente-Gurt, Bestückelemente-Entnahmeeinrichtung und Verfahren zum Entnehmen von Bestückelementen aus einem Bestückelemente-Gurt
DE10044418C2 *Sep 8, 2000Sep 19, 2002Siemens AgBestückelemente-Entnahmeeinrichtung und Verfahren zum Entnehmen von Bestückelementen aus einem Bestückelemente-Gurt
EP0300838A1 *Jul 25, 1988Jan 25, 1989LINTEC CorporationCover tape for sealing the chip-holding parts of a carrier tape
Classifications
U.S. Classification206/714, 414/935, 438/118
International ClassificationB65D73/02
Cooperative ClassificationB65D73/02, Y10S414/135
European ClassificationB65D73/02