EP0993589B1 - Systeme d'allumage - Google Patents

Systeme d'allumage Download PDF

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Publication number
EP0993589B1
EP0993589B1 EP98941246A EP98941246A EP0993589B1 EP 0993589 B1 EP0993589 B1 EP 0993589B1 EP 98941246 A EP98941246 A EP 98941246A EP 98941246 A EP98941246 A EP 98941246A EP 0993589 B1 EP0993589 B1 EP 0993589B1
Authority
EP
European Patent Office
Prior art keywords
ignition
semiconductor
unit according
semiconductor plate
ignition unit
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
Application number
EP98941246A
Other languages
German (de)
English (en)
Other versions
EP0993589A1 (fr
Inventor
Marten Swart
Josef Dirmeyer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP0993589A1 publication Critical patent/EP0993589A1/fr
Application granted granted Critical
Publication of EP0993589B1 publication Critical patent/EP0993589B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 a lighter.
  • a known igniter (WO 96/12926-A) contains a metal one Carrier over which a cap is put. Cap and straps together form a capsule that is filled with ignition material is. A first pin is on the metal one Carrier attached, another pin is electrical insulated through the carrier and protrudes into the interior of the capsule. On the side of the carrier facing the ignition material a semiconductor ignition element is arranged, which by means of a Bond wire electrically conductive with the other Connector pin is connected.
  • EP 0 471 871 A1 describes an occupant protection system for a Motor vehicle known in which a centrally arranged in the vehicle Control unit via a data line with various Protective means of the motor vehicle is connected.
  • Protection means associated with an electrical circuit that in particular ignition commands sent by the central control unit receives and decodes.
  • an igniter is known with a Semiconductor chip that contains an integrated circuit. Furthermore, the semiconductor die can contain an ignition element, that is formed, for example, by a passivation layer becomes. The ignition element is thermally connected to an ignition material coupled.
  • the object of the invention is to provide a space-saving arrangement electrical associated with an occupant protection means To create circuit that with a data line central control unit is connected.
  • the electrical circuit and the energy storage capacitor in for example from WO 96/12926-A known lighter introduced / integrated. So that the invention Lighters are not in the shape and size of the known The lighter is the electrical circuit as an integrated circuit arrangement on a semiconductor substrate trained and allowed due to integration smallest possible dimensions. Furthermore, it is also to be provided of energy provided for an ignition capacitor formed as an integrated component that the shape of another semiconductor chip. It is first semiconductor chip containing the capacitor its broadside versus the broadside of the integrated Circuit arrangement containing second semiconductor die arranged so that the semiconductor chips on each other are stacked as a so-called "package" and thus in total take up as little space as possible.
  • This package will in turn preferably arranged on a metal carrier of the igniter, which at least together with a cap is a capsule forms, which is filled in the following ignition material.
  • a metal carrier of the igniter which at least together with a cap is a capsule forms, which is filled in the following ignition material.
  • the both broad sides of a semiconductor chip have one cuboid plates each have a much larger area on as one of the four faces.
  • One intended for triggering an occupant protection device Lighter is usually in the casing of a gas generator inserted or otherwise mechanically connected to it.
  • the gas generator in turn faces a folded one Airbag (predetermined breaking points or openings) on. Exploded by heating the igniter in the igniter the ignition material of the lighter, which is sufficient Energy is transferred to the gas generator, so that Gas tablets release gas, which flows into the airbag.
  • Gas generators usually have attachment points or Openings for the reception of conventional lighters with fixed default Geometries.
  • the entire Electronics including capacitor in a conventional lighter integrated without changing its design and size can be on the use of conventional gas generators in cooperation with the lighter according to the invention be used, so that on the one hand constructive time-consuming changes to the gas generators are not required is, on the other hand, essential components of the lighter compared to conventional lighters in their constructive training do not need to be changed.
  • Metal carrier like cap for example, one identical to the known lighter have constructive training.
  • the lighter according to the invention only requires one Minimum of components and is technically simple manufacture.
  • Figure 1 shows the electrical circuit diagram of the invention Lighter.
  • connections 6 provided on the lighter side, each over a decoupling resistor 61 and a filter capacitor 62 with an integrated circuit arrangement 21 are connected.
  • an ignition element 31 is in the form of a Heating resistor and an energy storage capacitor 11 connected to the integrated circuit arrangement 21.
  • the filter capacitor 62 is used to filter out high-frequency electromagnetic EMI.
  • the capacitor 11 is used to provide a sufficient amount of energy to ignite or release the associated occupant protection means.
  • the ignition element 31 is designed as a resistance heating wire, which with a Ignition material, e.g. Ignition powder, the lighter heat coupled is.
  • the integrated circuit arrangement 21 receives via the Connections 6 incoming messages from a central control unit of the occupant protection system. This news can Trip information but also contain diagnostic information.
  • the integrated circuit arrangement has one for the Connection to the data bus suitable interface and a Control unit in the form of a microprocessor for evaluating the received data, for sending the message to be sent, and for performing control and test routines. Detects the integrated Circuit arrangement a transmitted ignition command, so it switches an integrated electrically controllable Switch conductive through which in the energy storage capacitor 11 stored energy in the form of a heating current on the ignition element 31 is transmitted.
  • Figure 2 shows an exploded view of the invention Lighter from a top view.
  • the invention Lighter contains three pins 6 through one Plastic holder 7 in openings provided with glass insulation 51 a metal carrier 5 are performed.
  • the metal support 5 serves as a carrier element for three flat semiconductor wafers 1, 2 and 3.
  • the first semiconductor die 1 contains the integrated capacitor, the second semiconductor die 2 the integrated circuit arrangement and the third Semiconductors 3 the ignition element.
  • Point according to Figure 2 the second and third semiconductor chips 2 and 3, respectively contact fields 4 on their broad sides, the Contact fields 4 of the second semiconductor die 2 on one protruding surface of the second semiconductor chip 2 is arranged are, so that in the case of stacked semiconductor chips 2, 1 and 3 a contacting of the third semiconductor die 3 allows with the second semiconductor die 2 via bond wires 41 becomes.
  • the first semiconductor die 1 is with the second semiconductor chip 2 preferably in the so-called "Flip chip technology" connected.
  • the two semiconductor wafers 1 and 2 on the broad sides facing each other not shown contact fields 4, which at a Stacking of the two semiconductor chips against each other stand and an electrical contact between the create two semiconductor chips 1 and 2.
  • the individual semiconductor wafers are preferred with one another connected by an adhesive layer. If applicable an additional insulating layer between the individual semiconductor chips required so that electrical short circuits semiconductor wafers representing the individual components be avoided and electrical contacts can only be defined via the contact fields.
  • the third semiconductor die is preferably a silicon substrate, on top of that a polysilicon layer with a thin one Cross-sectional area is applied.
  • This thin cross-sectional area serves as a heating resistor when current flows.
  • the heating resistor can also be placed in the first semiconductor chip to get integrated.
  • the first semiconductor chip contains a not penetrated with the aforementioned pores Area on which the polysilicon layer is applied which also forms one of the capacitor electrodes.
  • the substrate area is the polysilicon layer in turn a defined area with a thin cross section, so that this area of the polysilicon layer is the resistance heating element forms. With such a realization the ignition element can therefore be on a third semiconductor chip to be dispensed with.
  • the second semiconductor die also contain the ignition element.
  • an area is one for the electrical circuit etched as the contacting layer polysilicon layer and serves as a resistance heating element in this etched-off area.
  • the ignition element In all forms of formation of the ignition element this is the case make sure that the ignition element has a good thermal coupling to the Has ignition material. That is why the semiconductor die is preferred arranged at the top, which is the resistance element contains.
  • the lowest semiconductor die is preferred connected to the metal carrier 5 via an adhesive connection.
  • the metal carrier 5 serves as a heat sink for the integrated circuit arrangement. On the other hand, it serves as mechanically stable element for the lighter.
  • the metal support also serves as a shield against serious mechanical Effects on the plug connection to the data bus or the data bus itself in the event of an explosion of the ignition material.
  • the pins 6 each include a decoupling resistor 61. Between two connecting pins 6, the filter capacitor 62 is arranged. A plastic holder only shown in the opening fixes the pins 6 and the components 61 and 62nd
  • the pins 6 are part of one of a Sheet metal punched out of the lead frame. After the punching process the components 61 and 62 are attached to the lead frame. In the following, the plastic holder 7 around the Splashed leadframe. Then excess electrical Connections between the pins that are used for mechanical stability of the lead frame during component assembly served, punched out.
  • the device created so far with the plastic holder 7 and the connecting pins 6 is connected below with the metal support 5, the Terminal pins 6 in glass insulation 51 of the metal carrier 5 be pressed in.
  • the semiconductor chips are preferably already here attached to the metal support in a stacked manner. To do this, the individual semiconductor chips are joined together or glued to the metal support.
  • the flip-chip technology is the individual semiconductor chips already contacted each other. Otherwise, after Assemble the metal carrier with the semiconductor chips and the plastic holder 7 bond contacts between the semiconductor chips, where necessary, manufactured, as well as bond contacts between the pins and contact fields of the integrated Circuitry.
  • the cap 8 is placed on the metal carrier 5 and tightly connected to it, for example by a flaring process.
  • the cap 8 has on its end face an opening through which the following ignition material into that formed by the cap 8 and the metal body 5 Capsule is filled, in particular pressed.
  • the ignition material therefore surrounds the semiconductor chips 1 to in the following 3.
  • the cap is then drawn with a not shown Hermetically sealed lid.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Claims (12)

  1. Système d'allumage, en particulier pour déclencher un moyen de protection d'occupants d'un véhicule automobile, comprenant un élément d'allumage (31) coopérant avec un matériau d'allumage, une première plaquette semiconductrice (1), qui contient un condensateur (11) réalisé sous forme d'élément intégré pour fournir de l'énergie pour une opération d'allumage, une deuxième plaquette semiconductrice (2) qui contient un agencement de circuit intégré (21) pour commander l'élément d'allumage (31), caractérisé en ce que la première plaquette semiconductrice (1) fait face, avec sa face large, à une face large de la deuxième plaquette semiconductrice (2).
  2. Système d'allumage selon la revendication 1, caractérisé en ce que la première et la deuxième plaquettes semiconductrices (1, 2) sont disposées l'une sur l'autre.
  3. Système d'allumage selon la revendication 1 ou la revendication 2, caractérisé en ce que l'élément d'allumage (31) est réalisé en tant que fil chauffant résistant.
  4. Système d'allumage selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une troisième plaquette semiconductrice (3) contient l'élément d'allumage (31), et en ce que la troisième plaquette semiconductrice (3) fait face, avec sa face large, à une face large de la première ou de la deuxième plaquette semiconductrice (1, 2).
  5. Système d'allumage selon la revendication 4, caractérisé en ce que la troisième plaquette semiconductrice (3) est disposée sur la première plaquette semiconductrice (1).
  6. Système d'allumage selon l'une quelconque des revendications précédentes, caractérisé en ce que chaque plaquette semiconductrice (1, 2, 3) présente des champs de contact (4) pour réaliser un contact électrique.
  7. Système d'allumage selon la revendication 6, caractérisé en ce que les champs de contact (4) des première et deuxième plaquettes semiconductrices (1, 2) sont connectés les uns aux autres par des fils de liaison (41).
  8. Système d'allumage selon la revendication 7, caractérisé en ce que la surface de la deuxième plaquette semiconductrice (2) est plus grande d'au moins la surface des champs de contact (4) que la surface de la première plaquette semiconductrice (1).
  9. Système d'allumage selon la revendication 6, caractérisé en ce que chaque champ de contact (4) est disposé sur la face large de la plaquette semiconductrice respective (1, 2, 3).
  10. Système d'allumage selon la revendication 6, caractérisé en ce que les champs de contact (4) des première et deuxième plaquettes semiconductrices (1, 2) reposent directement les uns sur les autres.
  11. Système d'allumage selon l'une quelconque des revendications précédentes, caractérisé en ce qu'au moins un support en métal (5) et conjointement un capuchon (8) disposé sur le support en métal (5) forment une capsule pour le matériau d'allumage, et en ce que les plaquettes semiconductrices (1, 2, 3) sont disposées les unes sur les autres sur le support en métal (5).
  12. Système d'allumage selon la revendication 11, caractérisé en ce que des broches de connexion (6) pour le circuit intégré (21) sont guidées de manière électriquement isolée par le support en métal (5).
EP98941246A 1997-07-09 1998-06-29 Systeme d'allumage Expired - Lifetime EP0993589B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19729437 1997-07-09
DE19729437 1997-07-09
PCT/DE1998/001779 WO1999002937A1 (fr) 1997-07-09 1998-06-29 Systeme d'allumage

Publications (2)

Publication Number Publication Date
EP0993589A1 EP0993589A1 (fr) 2000-04-19
EP0993589B1 true EP0993589B1 (fr) 2002-10-02

Family

ID=7835195

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98941246A Expired - Lifetime EP0993589B1 (fr) 1997-07-09 1998-06-29 Systeme d'allumage

Country Status (5)

Country Link
EP (1) EP0993589B1 (fr)
JP (1) JP3648256B2 (fr)
KR (1) KR100396964B1 (fr)
DE (1) DE59805824D1 (fr)
WO (1) WO1999002937A1 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2790077B1 (fr) 1999-02-18 2001-12-28 Livbag Snc Allumeur electro-pyrotechnique a electronique integree
DE19951720B4 (de) * 1999-06-25 2007-06-06 Delphi Technologies, Inc., Troy Anzündeinheit mit integrierter Elektronik
DE10023964C1 (de) * 2000-05-16 2001-09-27 Siemens Ag Intelligente Zündpille
DE10026329A1 (de) 2000-05-26 2001-11-29 Bosch Gmbh Robert Zündvorrichtung
WO2001094874A1 (fr) 2000-06-07 2001-12-13 Siemens Aktiengesellschaft Composant d'allumage pour declencher un moyen de protection de passagers dans une automobile
US6979020B2 (en) 2002-01-25 2005-12-27 Daicel Chemical Industries, Ltd. Air bag system
US7168737B2 (en) 2002-01-25 2007-01-30 Daicel Chemical Industries, Ltd. Integrated circuit for air bag system
US6820557B2 (en) 2002-01-25 2004-11-23 Daicel Chemical Industries, Ltd. Igniter for air bag system
US7083193B2 (en) 2002-03-01 2006-08-01 Daicel Chemical Industries, Ltd. Igniter for air bag system
US7155353B2 (en) 2002-04-25 2006-12-26 Daicel Chemical Industries, Ltd. Method for determining charging capacitance of capacitor
JP4205985B2 (ja) * 2002-04-25 2009-01-07 ダイセル化学工業株式会社 コンデンサの充電容量の決定方法
JP2008138931A (ja) * 2006-12-01 2008-06-19 Renesas Technology Corp 半導体装置
JP4944584B2 (ja) * 2006-12-01 2012-06-06 日本化薬株式会社 ヘッダーアッシー、スクイブならびにエアバッグ用ガス発生装置およびシートベルトプリテンショナー用ガス発生装置
JP4668889B2 (ja) * 2006-12-01 2011-04-13 日本化薬株式会社 点火素子搭載コンデンサ、ヘッダーアッシー、スクイブならびにエアバッグ用ガス発生装置およびシートベルトプリテンショナー用ガス発生装置
JP4714669B2 (ja) 2006-12-01 2011-06-29 日本化薬株式会社 ヘッダーアッシー、スクイブならびにエアバッグ用ガス発生装置およびシートベルトプリテンショナー用ガス発生装置
JP5364354B2 (ja) * 2008-12-08 2013-12-11 日本工機株式会社 携行型拘束網展開装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
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
DE3842917C1 (en) * 1988-12-21 1989-11-30 Messerschmitt-Boelkow-Blohm Gmbh, 8012 Ottobrunn, De Fuze device for detonating a pyrotechnic charge
FR2726124A1 (fr) * 1994-10-21 1996-04-26 Motorola Semiconducteurs Boitier pour dispositif a semiconducteur
FR2760525B1 (fr) * 1997-03-07 1999-04-16 Livbag Snc Initiateur electro-pyrotechnique constitue autour d'un circuit imprime complet

Also Published As

Publication number Publication date
KR100396964B1 (ko) 2003-09-02
DE59805824D1 (de) 2002-11-07
JP2000513799A (ja) 2000-10-17
KR20010015552A (ko) 2001-02-26
WO1999002937A1 (fr) 1999-01-21
EP0993589A1 (fr) 2000-04-19
JP3648256B2 (ja) 2005-05-18

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