EP0963544A1 - Drucksensor-bauelement und verfahren zur herstellung - Google Patents
Drucksensor-bauelement und verfahren zur herstellungInfo
- Publication number
- EP0963544A1 EP0963544A1 EP98910626A EP98910626A EP0963544A1 EP 0963544 A1 EP0963544 A1 EP 0963544A1 EP 98910626 A EP98910626 A EP 98910626A EP 98910626 A EP98910626 A EP 98910626A EP 0963544 A1 EP0963544 A1 EP 0963544A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure sensor
- pressure
- semiconductor chip
- connecting piece
- chimney
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 239000004065 semiconductor Substances 0.000 claims abstract description 57
- 238000005538 encapsulation Methods 0.000 claims abstract description 34
- 238000001514 detection method Methods 0.000 claims abstract description 25
- 239000012777 electrically insulating material Substances 0.000 claims abstract description 5
- 238000004873 anchoring Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 7
- 239000004033 plastic Substances 0.000 claims description 7
- 229920003023 plastic Polymers 0.000 claims description 7
- 230000000284 resting effect Effects 0.000 claims description 5
- 238000001746 injection moulding Methods 0.000 claims description 3
- 238000004026 adhesive bonding Methods 0.000 claims description 2
- 238000013461 design Methods 0.000 description 10
- 150000001875 compounds Chemical class 0.000 description 7
- 238000000465 moulding Methods 0.000 description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 239000010703 silicon Substances 0.000 description 5
- 229920001187 thermosetting polymer Polymers 0.000 description 5
- 238000009530 blood pressure measurement Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920002120 photoresistant polymer Polymers 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 241000239290 Araneae Species 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- 238000009757 thermoplastic moulding Methods 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000001721 transfer moulding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/14—Housings
- G01L19/141—Monolithic housings, e.g. molded or one-piece housings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/0007—Fluidic connecting means
- G01L19/0038—Fluidic connecting means being part of the housing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/0061—Electrical connection means
- G01L19/0084—Electrical connection means to the outside of the housing
Definitions
- the invention relates to a pressure sensor component with an approximately flat chip carrier surface, on which a semiconductor chip with an integrated pressure sensor, which has a pressure detection surface exposed to the pressure to be measured, is arranged, and with one of the semiconductor chip and / or the Component encapsulation of an electrically insulating material enclosing the chip carrier at least in regions.
- the invention further relates to a method for producing such a pressure sensor component.
- the medium to be measured must be brought up to the sensor or the pressure prevailing in the medium must be transmitted to the sensor.
- the application of a semiconductor pressure sensor in the final application requires the protected encapsulation of the sensor chip by covering it with a suitable material, usually plastic.
- the application of the semiconductor chip, which is generally based on the base material silicon, in a housing is known, for example DIP housing (dual inline package housing), SMD housing (surface-mounted design housing) or in special designs, this housing is subsequently assembled on a circuit board.
- the pressure coupling takes place via a membrane made of metal or plastic, which covers and thus protects the sensitive sensor, which can also be designed as a separate additional component.
- the invention is based on the object of providing a pressure sensor component or a method for producing a pressure sensor component of the type mentioned at the outset, in which the encapsulation of the semiconductor chip carrying the mechanically sensitive pressure sensor or the chip carrier is structurally simpler and thus can also be done more cost-effectively, and at the same time a comparatively simple to set up but nevertheless sufficiently tight connection between the medium to be measured and the pressure sensor can be guaranteed.
- Pressure sensor-connected chimney-shaped connecting piece is arranged or incorporated, which, with its end resting on the semiconductor chip, at least encloses the pressure detection surface in a pressure-tight manner and is designed to be open to the outside at its opposite end.
- the method according to the invention for producing the pressure sensor component provides for a chimney-shaped connecting piece to be placed on the pressure sensor after the semiconductor chip has been mounted and contacted on the chip carrier, but before the pressure sensor component has been encapsulated, at least with its end resting on the semiconductor chip encloses the pressure detection surface in a pressure-tight manner and is designed to be open to the outside at its opposite end.
- a complete integration of an opening in the housing in the form of a chimney-shaped connecting piece, which is preferably formed as an independent component, is provided. Only the pressure-sensitive surface (pressure detection surface) of the semiconductor chip remains free. The remaining components or areas of the semiconductor chip are encapsulated with encapsulation material, in particular molding compound. The opening in the component lies above the pressure-sensitive surface of the semiconductor chip in order to enable different pressures to be sensed at this point. The actual encapsulation of the
- Pressure sensor component i.e. the encapsulation of the chip carrier, the remaining semiconductor chip, and, if appropriate, bonding wires leads to the desired protection of the pressure sensor component against environmental influences and enables the application and application of the pressure sensor, for example, in the case of assembly on a printed circuit board.
- An essential advantage of the solution according to the invention is therefore a targeted pressure coupling using an opening while simultaneously sealing the component with molding compound.
- the pressure to be measured is via the opening of the min-shaped connecting piece is led directly to the pressure detection surface of the semiconductor chip.
- no membrane in the sense of the previously known pressure sensor components is required, as is provided for the pressure measurement of aggressive media; at most, the sensor surface can be passivated with a thin photoresist layer or similar thin protective layer and in this way be resistant to harmful environmental influences.
- the pressure sensor component according to the invention is also suitable as a media-separated pressure sensor for more aggressive media. The remaining chip surface must not necessarily be passivated and can therefore be contacted with standard parameters.
- a section of the chimney-shaped connecting piece lying completely within the component encapsulation has an anchoring element which absorbs tensile forces acting on the chimney-shaped connecting piece.
- the anchoring member of the chimney-shaped connecting piece can be formed by a shape arranged on the edge and projecting transversely to the longitudinal direction.
- the anchoring member of the chimney-shaped connecting piece is flange-shaped with an abutment surface that runs around the outer periphery of the end facing the semiconductor chip and is supported on the semiconductor chip. The anchoring element is required above all when using a pressure line that can be connected to the chimney-shaped connecting piece.
- connection piece When the pressure line is removed from the connection piece, tensile forces can act on the connection piece embedded within the molding compound, which can lead to the connection piece being pulled out of the component housing, which leads to the destruction of the pressure sensor component. This is avoided by the anchoring element.
- the anchoring element For connection to a pressure line or a pressure hose, in which or in which the medium to be measured is brought to the pressure sensor, it can advantageously be provided that in a structurally particularly simple design, the chimney-shaped connecting piece faces outwards has a tapering cross-sectional shape. In this way, a pressure line can be connected by simply plugging it on.
- this tapered design requires an inexpensive design, which enables simple demolding after the connection stub has been produced by means of injection molding, and is therefore inexpensive.
- the chimney-shaped connecting piece arranged in the component encapsulation projects with its opening beyond the structural height of the component and at its free end with a support means for a form-fitting mechanical, play-free connection with a holding means on the connecting piece attachable pressure line is equipped such that when the pressure line is placed on the connecting piece, the holding means and the support means alternately engage.
- the chimney-shaped connecting piece has a tubular extension with a circular cross section, which tapers conically towards the end facing away from the semiconductor chip, and at its end facing the semiconductor chip opens into a base plate forming the anchoring member, the dimensions and shape of which are adapted to the pressure detection surface of the semiconductor chip.
- the chimney-shaped connecting piece is simply placed on the semiconductor chip before the encapsulation, the subsequent injection molding process for completing the encapsulation using a molding compound, in particular duroplastic or thermoplastic molding compound, for a sufficiently pressure-tight connection of the connecting piece the semiconductor chip.
- the chimney-shaped connecting piece can also be permanently attached to the semiconductor chip before the encapsulation, in particular by gluing or bonding, the connecting piece being made of a metallic material or coated with a metal layer in the latter case, and otherwise made of a plastic -Material is made, which is particularly high temperature stable.
- thermosetting thermosets Semiconductor chips will preferably use a pressing process with thermosetting thermosets, as is used per se with standard components.
- the molding compound not only protects the semiconductor chip, but also mechanizes the chip carrier and the chimney-shaped connecting piece and ensures a reproducible, defined housing shape.
- transfer molding with thermosets the amount of plastic required for a pressing process is heated and plasticized at one point and from there pressed with a stamp through channels into the closed tool with the component to be encased, where it hardens and can then be removed as a finished product .
- thermosets epoxy or silicone molding compounds
- thermoplastics which have advantages in terms of economical and automated production, are particularly suitable as plastics for the encapsulation.
- Suitable housing designs for the pressure sensor component according to the invention are both those for plug-in mounting and for surface mounting.
- plug-in assembly it is known that the connections of the component are inserted into the holes in a printed circuit board and then soldered on the opposite side.
- surface mounting the component connections are no longer inserted into holes in the printed circuit board, but instead are placed on connection spots on the printed circuit board and soldered there.
- the surface mounting enables a considerable saving of space and reducing costs; For this reason, this type of installation is also preferred for the pressure sensor component according to the invention.
- FIG. 1 shows a schematic cross section through a pressure sensor component with a chimney-shaped connection
- FIG. 2 shows a partial plan view of the pressure detection surface before the pressure sensor along the section line II-II from FIG. 1.
- the figures show an exemplary embodiment of a pressure sensor component 1 according to the invention for surface mounting on the component surface of a printed circuit board.
- the pressure sensor component 1 has an approximately flat chip carrier surface 2 having a chip carrier 3 made of electrically conductive material, on which chip carrier surface 2 a semiconductor chip 4 made of silicon base material is fastened with an integrated pressure sensor and associated electronic circuit, the pressure sensor and the circuit are not shown in detail in the figures, but only schematically indicate a pressure detection surface 5 which is exposed to the pressure P to be measured.
- the pressure sensor component 1 has a component encapsulation 6, which at least in regions encloses the semiconductor chip 4 and / or the chip carrier 3, and is made of an electrically insulating material, for example a thermoset or thermoplastic material.
- the chip carrier 3 is constructed in a manner known per se as a so-called “lead frame”, ie as a prefabricated chip carrier substrate, and has a large number of 6 through, by means of bonding wires 7 electrically connected to the pressure sensor or the associated electronic circuit of the semiconductor chip connected to the electrode connections 8, 9 (only two electrode connections are shown in FIG. 1, the electrode connection 9 instead of a bonding wire directly to the underside of the semiconductor chip 4 is electrically coupled), which are designed in the form of connecting legs which are led out to at least two sides of the chip carrier 3 and which are bent and cut in a known manner to form short, rock-shaped connecting stubs.
- Such an arrangement ensures the assembly of the component 1 on the assembly surface of a (not shown) printed circuit board using SMD technology.
- a wire contacting method is used for the electrical connection of the pressure sensor integrated on the semiconductor chip 4 or the electronic circuit associated therewith with the electrode connections 8, 9, in which bonding wires 7 are attached to the chip 4 and attached to it Electrode legs 8 to be connected accordingly can also be used for this electrical connection, so-called spider contacting, in which instead of bond wires an electrically conductive system carrier plate is used, on which the chip 4 is directly contacted.
- the pressure sensor integrated on the semiconductor chip 4 made of silicon represents a so-called piezoresistive sensor, in which a thin silicon membrane manufactured in the surface of the chip 4 according to methods of micromechanics is provided, which is electrically coupled to pressure-dependent resistors, which are also formed in the silicon substrate are and are connected in a conventional manner in a bridge circuit. Also integrated in the semiconductor chip 4 is a circuit assigned to the sensor, which serves for signal processing (amplification and correction), but also for adjustment and compensation of the sensor.
- semiconductor pressure sensors on which the invention is based are primarily suitable for those applications in which the smallest structural size is important, for example in the case of pressure measurements in the motor vehicle sector, for example in the measurement of brake pressures, tire pressures, combustion chamber pressures and the like.
- semiconductor pressure sensors that work according to the principle of piezoresistive pressure measurement, it is also possible to use sensors that work with capacitive measuring principles.
- the component encapsulation 6 is arranged or incorporated in the component encapsulation 6 in relation to the pressure detection surface 5 of the pressure sensor and penetrating the encapsulation 6 as shown, with the pressure sensor connected chimney-shaped connecting piece 10, which with its
- Semiconductor chip 4 overlying end 11 at least encloses the pressure detection surface 5 in a pressure-tight manner and is designed to be open to the outside at its opposite end 12.
- the pressure P to be measured via a flexible pressure line 13, which is attached to the free end 12 of the connection stub is passed directly via the opening 14 of the chimney-shaped connection stub 10 onto the pressure detection surface 5 of the semiconductor chip 4, with At most, a thin photoresist film can be deposited on the pressure detection surface 5.
- the opening 14 can be temporarily covered with an adhesive strip or a removable cap in order to prevent the ingress of foreign matter and dirt.
- the end 11 of the connecting piece 10 resting on the semiconductor chip is designed as a square, flange-shaped anchoring element 15 which surrounds the pressure detection surface 5, the edge delimitations of the anchoring element 15 being designated in the plan view according to FIG. 2 with the reference numbers 15a and 15b.
- the anchoring member 15 thus has an abutment surface 16, which is supported on the semiconductor chip 4 and on which an adhesive or. Adhesive can be applied.
- the part 17 of the chimney-shaped connecting piece 10 which in particular consists of one piece and is made of a plastic material, penetrates the encapsulation 6 and projects above the overall height and has a circular, tapering cross-sectional shape.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19707503A DE19707503B4 (de) | 1997-02-25 | 1997-02-25 | Drucksensor-Bauelement und Verfahren zur Herstellung |
DE19707503 | 1997-02-25 | ||
PCT/DE1998/000409 WO1998038483A1 (de) | 1997-02-25 | 1998-02-12 | Drucksensor-bauelement und verfahren zur herstellung |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0963544A1 true EP0963544A1 (de) | 1999-12-15 |
Family
ID=7821414
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98910626A Withdrawn EP0963544A1 (de) | 1997-02-25 | 1998-02-12 | Drucksensor-bauelement und verfahren zur herstellung |
Country Status (6)
Country | Link |
---|---|
US (2) | US6201467B1 (de) |
EP (1) | EP0963544A1 (de) |
JP (1) | JP2001515588A (de) |
CN (1) | CN1249034A (de) |
DE (1) | DE19707503B4 (de) |
WO (1) | WO1998038483A1 (de) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW522500B (en) * | 1999-07-28 | 2003-03-01 | Winbond Electronics Corp | Measurement of surface pressure distribution of whole wafer surface and feedback method |
DE10022124B4 (de) | 2000-05-06 | 2010-01-14 | Wabco Gmbh | Elektronisches Steuergerät |
JP4801274B2 (ja) * | 2001-03-29 | 2011-10-26 | 本田技研工業株式会社 | 圧力センサを内蔵した制御箱 |
US6889568B2 (en) * | 2002-01-24 | 2005-05-10 | Sensarray Corporation | Process condition sensing wafer and data analysis system |
US7757574B2 (en) * | 2002-01-24 | 2010-07-20 | Kla-Tencor Corporation | Process condition sensing wafer and data analysis system |
US6889509B1 (en) | 2002-09-13 | 2005-05-10 | Isothermal Systems Research Inc. | Coolant recovery system |
DE102004024919A1 (de) * | 2004-05-19 | 2005-12-15 | Trafag Ag | Drucksensor |
US8604361B2 (en) * | 2005-12-13 | 2013-12-10 | Kla-Tencor Corporation | Component package for maintaining safe operating temperature of components |
TWI405281B (zh) * | 2005-12-13 | 2013-08-11 | Sensarray Corp | 製程條件感應晶圓及資料分析系統 |
DE102007040831A1 (de) * | 2007-08-29 | 2009-03-05 | Continental Automotive Gmbh | Verfahren zum Herstellen einer Sensoranordnung, Sensoranordnung und Lenkwinkelsensoranordnung |
DE102008034654A1 (de) * | 2008-07-25 | 2010-02-04 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Sensoreinrichtung |
US8069730B2 (en) * | 2008-11-14 | 2011-12-06 | Kulite Semiconductor Products, Inc. | Pressure transducer structures suitable for curved surfaces |
US7900521B2 (en) * | 2009-02-10 | 2011-03-08 | Freescale Semiconductor, Inc. | Exposed pad backside pressure sensor package |
CN101718400A (zh) * | 2009-12-11 | 2010-06-02 | 深圳市众明半导体照明有限公司 | 一种大角度led照明装置 |
US8723299B2 (en) * | 2010-06-01 | 2014-05-13 | Infineon Technologies Ag | Method and system for forming a thin semiconductor device |
US8618620B2 (en) | 2010-07-13 | 2013-12-31 | Infineon Technologies Ag | Pressure sensor package systems and methods |
US8681493B2 (en) | 2011-05-10 | 2014-03-25 | Kla-Tencor Corporation | Heat shield module for substrate-like metrology device |
DE102013001159A1 (de) * | 2013-01-24 | 2014-07-24 | Hella Kgaa Hueck & Co. | Flüssigkeitsdrucksensor |
ITMI20130482A1 (it) | 2013-03-29 | 2014-09-30 | St Microelectronics Srl | Dispositivo elettronico integrato per il monitoraggio di pressione all'interno di una struttura solida |
US9013014B2 (en) * | 2013-04-29 | 2015-04-21 | Infineon Technologies Ag | Chip package and a method of manufacturing the same |
JP6275431B2 (ja) * | 2013-09-18 | 2018-02-07 | アルプス電気株式会社 | 圧力検知装置およびこれを使用した吸気圧測定装置 |
US9366593B2 (en) * | 2013-09-27 | 2016-06-14 | Infineon Technologies Ag | Pressure sensor package with integrated sealing |
US20170328197A1 (en) * | 2016-05-13 | 2017-11-16 | Ningbo Wanyou Deepwater Energy Science & Technolog Co.,Ltd. | Data Logger, Manufacturing Method Thereof and Real-time Measurement System Thereof |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6073325A (ja) * | 1983-09-30 | 1985-04-25 | Toshiba Corp | 半導体圧力センサ |
US4656454A (en) * | 1985-04-24 | 1987-04-07 | Honeywell Inc. | Piezoresistive pressure transducer with elastomeric seals |
US4942383A (en) * | 1989-03-06 | 1990-07-17 | Honeywell Inc. | Low cost wet-to-wet pressure sensor package |
US5001934A (en) * | 1990-01-02 | 1991-03-26 | Walbro Corporation | Solid state pressure sensor |
JPH04122830A (ja) * | 1990-09-14 | 1992-04-23 | Mitsubishi Electric Corp | 半導体圧力センサ |
US5184107A (en) * | 1991-01-28 | 1993-02-02 | Honeywell, Inc. | Piezoresistive pressure transducer with a conductive elastomeric seal |
CA2058916C (en) * | 1991-01-28 | 2000-03-21 | Dean Joseph Maurer | Piezoresistive pressure transducer with a conductive elastomeric seal |
JPH04258176A (ja) * | 1991-02-12 | 1992-09-14 | Mitsubishi Electric Corp | 半導体圧力センサ |
US5341684A (en) * | 1992-12-07 | 1994-08-30 | Motorola, Inc. | Pressure sensor built into a cable connector |
JPH07120340A (ja) * | 1993-10-22 | 1995-05-12 | Honda Motor Co Ltd | 圧力センサ |
DE4415984A1 (de) * | 1994-05-06 | 1995-11-09 | Bosch Gmbh Robert | Halbleitersensor mit Schutzschicht |
US5686698A (en) * | 1994-06-30 | 1997-11-11 | Motorola, Inc. | Package for electrical components having a molded structure with a port extending into the molded structure |
-
1997
- 1997-02-25 DE DE19707503A patent/DE19707503B4/de not_active Expired - Fee Related
-
1998
- 1998-02-12 WO PCT/DE1998/000409 patent/WO1998038483A1/de not_active Application Discontinuation
- 1998-02-12 JP JP53715898A patent/JP2001515588A/ja not_active Ceased
- 1998-02-12 EP EP98910626A patent/EP0963544A1/de not_active Withdrawn
- 1998-02-12 CN CN98802848.4A patent/CN1249034A/zh active Pending
-
1999
- 1999-08-25 US US09/382,530 patent/US6201467B1/en not_active Expired - Lifetime
-
2001
- 2001-01-17 US US09/761,235 patent/US20010002119A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO9838483A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2001515588A (ja) | 2001-09-18 |
CN1249034A (zh) | 2000-03-29 |
DE19707503A1 (de) | 1998-08-27 |
DE19707503B4 (de) | 2007-01-04 |
US20010002119A1 (en) | 2001-05-31 |
WO1998038483A1 (de) | 1998-09-03 |
US6201467B1 (en) | 2001-03-13 |
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Legal Events
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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17P | Request for examination filed |
Effective date: 19990820 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR GB IT |
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RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: JANCZEK, THIES Inventor name: NEU, ACHIM Inventor name: STADLER, BERND Inventor name: BOOTZ, ERIC Inventor name: WINTERER, JUERGEN |
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RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: INFINEON TECHNOLOGIES AG |
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GRAG | Despatch of communication of intention to grant |
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