EP1040311B1 - Integrierte schaltungsanordnung zum aufheizen von zündmaterial sowie verwendung einer solchen integrierten schaltungsanordnung - Google Patents
Integrierte schaltungsanordnung zum aufheizen von zündmaterial sowie verwendung einer solchen integrierten schaltungsanordnung Download PDFInfo
- Publication number
- EP1040311B1 EP1040311B1 EP98965613A EP98965613A EP1040311B1 EP 1040311 B1 EP1040311 B1 EP 1040311B1 EP 98965613 A EP98965613 A EP 98965613A EP 98965613 A EP98965613 A EP 98965613A EP 1040311 B1 EP1040311 B1 EP 1040311B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- circuit arrangement
- ignition
- integrated circuit
- sio
- layer
- 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.)
- Expired - Lifetime
Links
- 239000000463 material Substances 0.000 title claims description 20
- 238000010438 heat treatment Methods 0.000 title claims description 14
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 19
- 229920005591 polysilicon Polymers 0.000 claims description 19
- 239000004065 semiconductor Substances 0.000 claims description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 11
- 229910052681 coesite Inorganic materials 0.000 claims 5
- 229910052906 cristobalite Inorganic materials 0.000 claims 5
- 239000000377 silicon dioxide Substances 0.000 claims 5
- 229910052682 stishovite Inorganic materials 0.000 claims 5
- 229910052905 tridymite Inorganic materials 0.000 claims 5
- 229910020447 SiO2/2 Inorganic materials 0.000 claims 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 8
- 239000000758 substrate Substances 0.000 description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 238000005530 etching Methods 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 239000010703 silicon Substances 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B3/00—Blasting cartridges, i.e. case and explosive
- F42B3/10—Initiators therefor
- F42B3/12—Bridge initiators
- F42B3/13—Bridge initiators with semiconductive bridge
Definitions
- the invention relates to an integrated circuit arrangement for heating ignition material and the use of a such integrated circuit arrangement.
- One proposed in an older patent application (DE 197 02 118) integrated circuit arrangement for heating Ignition material contains a silicon substrate with a highly doped Heating zone as an ignition resistor.
- the area of the heating zone has a smaller cross section than the rest of the area of the silicon substrate.
- the object of the invention is an integrated circuit arrangement to heat up ignition material to create the further the integration of a control circuit for the ignition resistor allows and still a good heat transfer from Ignition resistance to the ignition material allowed.
- FIG. 1 shows an electrical equivalent circuit diagram of an igniter, which in particular for triggering an occupant protection device is used in a motor vehicle.
- the occupant protection system is preferably located centrally in the vehicle Control unit arranged over a bus line with igniters of occupant protection devices such as airbags, belt tensioners, etc. connected is.
- the control unit recognizes acceleration or Depending on the body deformation, an impact will be over corresponding ignition commands selected igniter activated.
- everyone Igniter is arranged in a gas generator housing, which, for example, in a folded airbag empties.
- a control circuit 1 of the igniter evaluates the bus connection 2 received messages and acted upon an ignition resistor 3 electrically connected to it with a sufficiently large current pulse.
- Control circuit 1 ignition resistor 3 and ignition capacitor 4 are housed in a lighter housing. Also in this case is the ignition resistance 3 around ignition material, e.g. B. ignition powder, arranged. At a Heating the ignition resistor 3 explodes as a result of the heat transfer the ignition powder. Released by the explosion Energy causes tablets of the gas generator to release gas, that flows out into the folded airbag and thus enters Inflation of the airbag causes.
- ignition material e.g. B. ignition powder
- FIG. 2 shows an exemplary embodiment of the integrated circuit arrangement according to the invention, which is provided for heating ignition material. It contains the ignition resistor and the control circuit according to FIG. 1 on a common semiconductor substrate.
- a semiconductor layer Si preferably a silicon substrate, contains components of the control circuit in the form of doped regions n / p.
- a further semiconductor layer Ps preferably a polysilicon layer is deposited on the Si semiconductor layer.
- any other electrically conductive layer with an ohmic resistance can be used.
- the polysilicon layer Ps serves to electrically connect the components arranged in the semiconductor layer Si.
- Electrically conductive layers Alu1, Alu2, and Alu3 are each attached to the polysilicon layer Ps by insulating layers SiO 2/2 , SiO 2/3 , SiO 2/4 . These electrically conductive layers Alu1, Alu2, Alu3 serve to make electrical contact with the control circuit. This requires vertical through-plating (not shown) up to the polysilicon layer and the semiconductor layer. These electrically conductive layers Alu1, Alu2, Alu3 are preferably made of aluminum.
- the integrated circuit arrangement according to Figure 2 not only the control circuit for the ignition resistor of the lighter, but also the ignition resistance itself. It is through a region Zb of the polysilicon layer Ps realized.
- the ignition area Zb in the polysilicon layer Ps is designed such that it is preferably an ohmic Resistance value of 1-20 Ohm.
- Zb is in the ignition range the cross section of the polysilicon layer is tapered.
- the point so tapered ensures that electrical energy in the form of a capacitor the tapered point of flowing current is tapered exactly at this, low-resistance point is converted into thermal energy and thereby arranged on / at this tapered area Ignition material / ignition powder is brought to explode.
- the Ignition area can be tapered in width or height be trained. In any case, the cross-sectional area the polysilicon layer in the tapered area - in other words in the Area where the heating effect should be achieved - less than in the area where the polysilicon layer predominantly acts as a wiring layer.
- the electrically conductive layers Alu1, Alu2 and Alu3 and the insulating layers SiO 2/3 and SiO 2/4 have cutouts As in the ignition area Zb. These recesses As are required to ensure good heat transfer from the ignition resistance implemented in the polysilicon layer Ps to the ignition material Zp.
- the entire integrated circuit arrangement is embedded in such ignition material Zp.
- the ignition material Zp is preferably pressed onto the integrated circuit arrangement, in particular in the ignition area Zb. If the integrated circuit arrangement has only one electrically conductive layer Alul, then of course only this electrically conductive layer contains the cutout As.
- the recesses As are produced by etching as part of a standard semiconductor process.
- the insulating layer SiO 2/2 arranged directly on the polysilicon layer Ps is used as an etching stop for this etching process.
- the areas As recessed by etching can be created with small tolerances and can thus be adapted exactly to the ignition area Zb.
- the invention thus has the great advantage that in a single integrated circuit arrangement ignition resistance and Control circuit for the ignition resistor can be integrated and at the same time good heat transfer from the squib resistor to the ignition powder is guaranteed. At the same time Creation of this with little effort and tolerance Heat transfer through the formation of the recesses in a row of standard etching processes.
- the invention can also be used exclusively or in addition to the recess in the electrical conductive layer Alu1 a recess As in the semiconductor layer Si in the ignition area Zb to be etched by this A good thermal connection of the ignition resistor to ensure the ignition material Zp.
- the ignition material Zp is preferably always on the side where the Recess As is etched free.
- circuit arrangement in flip-chip technology on a Carriers are arranged, i.e. becomes the circuit arrangement directly with contact surfaces of one of the electrically conductive Layers placed on mating contact surfaces of a carrier, see above is advantageously only the semiconductor layer Si with the Provide recess As. It is from the side of the semiconductor layer Si her ignition material Zp pressed against the circuit arrangement.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Semiconductor Integrated Circuits (AREA)
- Air Bags (AREA)
Description
- Figur 1
- ein elektrisches Ersatzschaltbild eines Anzünders zum Auslösen eines Insassenschutzmittels eines Kraftfahrzeugs, und
- Figur 2
- ein Schichtenmodell einer erfindungsgemäßen integrierten Schaltungsanordnung.
Claims (5)
- Integrierte Schaltungsanordnung zum Aufheizen von Zündmaterial,mit einem Zündwiderstand (3) und mit einer Steuerschaltung (1) zum Steuern eines Stromflusses durch den Zündwiderstand (3),mit einer Halbleiterschicht (Si) für Bauelemente der Steuerschaltung (1),mit einer weiteren Halbleiterschicht (Ps) zum elektrischen Verbinden der Bauelemente, undmit einer elektrisch leitenden Schicht (Alu1) zum elektrischen Kontaktieren der Steuerschaltung (1),bei der ein Bereich (Zb) der weiteren Halbleiterschicht (Ps) als Zündwiderstand (3) ausgebildet ist,bei der die elektrisch leitende Schicht (Alul) und die Halbleiterschicht (Si) in diesem Bereich (Zb) eine Aussparung (As) aufweist, undbei der die Schaltungsanordnung in direktem Kontakt zu einem Zündmaterial (Zp) steht.
- Integrierte Schaltungsanordnung nach Anspruch 1, bei der die Polysiliziumschicht (Ps) von einer Isolierschicht (SiO2/1) getrennt auf der Halbleiterschicht (Si) angeordnet ist, und bei der die elektrisch leitende Schicht (Alu1) durch eine weitere Isolierschicht (SiO2/2) getrennt auf der Polysiliziumschicht (Ps) angeordnet ist.
- Integrierte Schaltungsanordnung nach Anspruch 2, bei der weitere Schichten (SiO2/3, Alu2, SiO2/4, Alu3, Pa) auf der elektrisch leitenden Schicht (Alu1) angeordnet sind, und bei der diese weiteren Schichten (SiO2/3, Alu2, SiO2/4, Alu3, Pa) in dem Bereich (Zb) eine Aussparung (As) aufweisen.
- Verwendung einer integrierten Schaltungsanordnung nach einem der vorhergehenden Ansprüche in einem Anzünder zum Auslösen eines Insassenschutzmittels, bei der die Schaltungsanordnung in direktem Kontakt zu dem Zündmaterial (Zp) steht.
- Verwendung einer integrierten Schaltungsanordnung nach Anspruch 4, bei der das Zündmaterial (Zp) im Bereich des Zündwiderstandes (1) an einer die Polysiliziumschicht (Ps) bedeckenden elektrischen Isolierschicht (SiO2/2) anliegt.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19756563 | 1997-12-18 | ||
| DE19756563A DE19756563C1 (de) | 1997-12-18 | 1997-12-18 | Integrierte Schaltungsanordnung zum Aufheizen von Zündmaterial sowie Verwendung einer solchen integrierten Schaltungsanordnung |
| PCT/DE1998/003672 WO1999032846A1 (de) | 1997-12-18 | 1998-12-15 | Integrierte schaltungsanordnung zum aufheizen von zündmaterial sowie verwendung einer solchen integrierten schaltungsanordnung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1040311A1 EP1040311A1 (de) | 2000-10-04 |
| EP1040311B1 true EP1040311B1 (de) | 2002-03-20 |
Family
ID=7852550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98965613A Expired - Lifetime EP1040311B1 (de) | 1997-12-18 | 1998-12-15 | Integrierte schaltungsanordnung zum aufheizen von zündmaterial sowie verwendung einer solchen integrierten schaltungsanordnung |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6302024B1 (de) |
| EP (1) | EP1040311B1 (de) |
| JP (1) | JP2001527204A (de) |
| KR (1) | KR20010024742A (de) |
| DE (2) | DE19756563C1 (de) |
| WO (1) | WO1999032846A1 (de) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE50014523D1 (de) * | 1999-08-25 | 2007-09-13 | Conti Temic Microelectronic | Pyrotechnisches Zündsystem mit integrierter Zündschaltung |
| US6772692B2 (en) * | 2000-05-24 | 2004-08-10 | Lifesparc, Inc. | Electro-explosive device with laminate bridge |
| GB2388420B (en) * | 2001-11-27 | 2004-05-12 | Schlumberger Holdings | Integrated activating device for explosives |
| US8091477B2 (en) * | 2001-11-27 | 2012-01-10 | Schlumberger Technology Corporation | Integrated detonators for use with explosive devices |
| US7168737B2 (en) * | 2002-01-25 | 2007-01-30 | Daicel Chemical Industries, Ltd. | Integrated circuit for air bag system |
| DE10240053A1 (de) * | 2002-08-30 | 2004-03-11 | Robert Bosch Gmbh | Brückenzünder-Zündelement |
| JP3803636B2 (ja) | 2002-12-26 | 2006-08-02 | 本田技研工業株式会社 | バス接続用点火装置 |
| US20060144278A1 (en) * | 2004-12-20 | 2006-07-06 | Schlumberger Technology Corporation | Methods for Testing Single-Use Devices |
| TWI759865B (zh) * | 2020-09-17 | 2022-04-01 | 大毅科技股份有限公司 | 發火電阻及其製造方法 |
| CN117146655B (zh) * | 2023-08-15 | 2024-04-02 | 广州成至智能机器科技有限公司 | 一种底火、烟花弹壳和烟花 |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3537820A1 (de) * | 1985-10-24 | 1987-04-30 | Dynamit Nobel Ag | Elektronischer zuender |
| GB2190730B (en) * | 1986-05-22 | 1990-10-24 | Detonix Close Corp | Detonator firing element |
| US4843964A (en) * | 1988-02-01 | 1989-07-04 | The United States Of America As Represented By The United States Department Of Energy | Smart explosive igniter |
| US4831933A (en) * | 1988-04-18 | 1989-05-23 | Honeywell Inc. | Integrated silicon bridge detonator |
| US4976200A (en) * | 1988-12-30 | 1990-12-11 | The United States Of America As Represented By The United States Department Of Energy | Tungsten bridge for the low energy ignition of explosive and energetic materials |
| US5370053A (en) * | 1993-01-15 | 1994-12-06 | Magnavox Electronic Systems Company | Slapper detonator |
| US5912427A (en) * | 1993-02-26 | 1999-06-15 | Quantic Industries, Inc. | Semiconductor bridge explosive device |
| US5847309A (en) * | 1995-08-24 | 1998-12-08 | Auburn University | Radio frequency and electrostatic discharge insensitive electro-explosive devices having non-linear resistances |
| DE19653115B4 (de) * | 1996-12-19 | 2005-06-02 | Autoliv Development Ab | Zündeinheit für eine Fahrzeug-Sicherheitsvorrichtung |
| US6199484B1 (en) * | 1997-01-06 | 2001-03-13 | The Ensign-Bickford Company | Voltage-protected semiconductor bridge igniter elements |
| DE19702118C1 (de) * | 1997-01-22 | 1998-03-26 | Siemens Ag | Zündpille |
| US6178888B1 (en) * | 1998-01-20 | 2001-01-30 | Eg&G Star City, Inc. | Detonator |
-
1997
- 1997-12-18 DE DE19756563A patent/DE19756563C1/de not_active Expired - Fee Related
-
1998
- 1998-12-15 WO PCT/DE1998/003672 patent/WO1999032846A1/de not_active Ceased
- 1998-12-15 EP EP98965613A patent/EP1040311B1/de not_active Expired - Lifetime
- 1998-12-15 JP JP2000525726A patent/JP2001527204A/ja not_active Withdrawn
- 1998-12-15 DE DE59803470T patent/DE59803470D1/de not_active Expired - Fee Related
- 1998-12-15 KR KR1020007006645A patent/KR20010024742A/ko not_active Ceased
-
2000
- 2000-06-19 US US09/596,894 patent/US6302024B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE19756563C1 (de) | 1999-08-19 |
| EP1040311A1 (de) | 2000-10-04 |
| WO1999032846A1 (de) | 1999-07-01 |
| US6302024B1 (en) | 2001-10-16 |
| KR20010024742A (ko) | 2001-03-26 |
| JP2001527204A (ja) | 2001-12-25 |
| DE59803470D1 (de) | 2002-04-25 |
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