EP1335178A2 - Mikroelektronisch-Pyrotechnisches Bauteil - Google Patents
Mikroelektronisch-Pyrotechnisches Bauteil Download PDFInfo
- Publication number
- EP1335178A2 EP1335178A2 EP03001251A EP03001251A EP1335178A2 EP 1335178 A2 EP1335178 A2 EP 1335178A2 EP 03001251 A EP03001251 A EP 03001251A EP 03001251 A EP03001251 A EP 03001251A EP 1335178 A2 EP1335178 A2 EP 1335178A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- component according
- semiconductor material
- core
- membrane
- ignition element
- 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.)
- Granted
Links
- 239000000463 material Substances 0.000 claims abstract description 95
- 239000004065 semiconductor Substances 0.000 claims abstract description 54
- 239000002360 explosive Substances 0.000 claims abstract description 39
- 239000007800 oxidant agent Substances 0.000 claims abstract description 23
- 239000000446 fuel Substances 0.000 claims abstract description 20
- 239000007787 solid Substances 0.000 claims abstract description 19
- 239000012528 membrane Substances 0.000 claims description 27
- 229910021426 porous silicon Inorganic materials 0.000 claims description 23
- 229910052710 silicon Inorganic materials 0.000 claims description 21
- 239000010703 silicon Substances 0.000 claims description 21
- 239000007789 gas Substances 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 11
- 239000011148 porous material Substances 0.000 claims description 11
- GDDNTTHUKVNJRA-UHFFFAOYSA-N 3-bromo-3,3-difluoroprop-1-ene Chemical compound FC(F)(Br)C=C GDDNTTHUKVNJRA-UHFFFAOYSA-N 0.000 claims description 8
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 claims description 6
- 229910001963 alkali metal nitrate Inorganic materials 0.000 claims description 6
- 229910001964 alkaline earth metal nitrate Inorganic materials 0.000 claims description 6
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical class OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 239000010409 thin film Substances 0.000 claims description 5
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 4
- 150000002828 nitro derivatives Chemical class 0.000 claims description 4
- 229910001485 alkali metal perchlorate Inorganic materials 0.000 claims description 3
- XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical class [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 claims description 2
- SXDBWCPKPHAZSM-UHFFFAOYSA-M bromate Chemical class [O-]Br(=O)=O SXDBWCPKPHAZSM-UHFFFAOYSA-M 0.000 claims description 2
- CRJZNQFRBUFHTE-UHFFFAOYSA-N hydroxylammonium nitrate Chemical compound O[NH3+].[O-][N+]([O-])=O CRJZNQFRBUFHTE-UHFFFAOYSA-N 0.000 claims description 2
- ICIWUVCWSCSTAQ-UHFFFAOYSA-N iodic acid Chemical class OI(=O)=O ICIWUVCWSCSTAQ-UHFFFAOYSA-N 0.000 claims description 2
- 229910001960 metal nitrate Inorganic materials 0.000 claims description 2
- 150000002823 nitrates Chemical class 0.000 claims description 2
- 150000002826 nitrites Chemical class 0.000 claims description 2
- 238000004377 microelectronic Methods 0.000 abstract 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 19
- 238000000034 method Methods 0.000 description 12
- 239000007788 liquid Substances 0.000 description 7
- 239000000758 substrate Substances 0.000 description 7
- 238000005530 etching Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 4
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 238000005496 tempering Methods 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- MWFSXYMZCVAQCC-UHFFFAOYSA-N gadolinium(iii) nitrate Chemical compound [Gd+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O MWFSXYMZCVAQCC-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 239000002159 nanocrystal Substances 0.000 description 2
- 229940082615 organic nitrates used in cardiac disease Drugs 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229910005560 Gd(NO3)3.6H2O Inorganic materials 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- -1 alkaline earth metal perchlorates Chemical class 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000007743 anodising Methods 0.000 description 1
- 238000001636 atomic emission spectroscopy Methods 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005234 chemical deposition Methods 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002488 metal-organic chemical vapour deposition Methods 0.000 description 1
- 238000001451 molecular beam epitaxy Methods 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- VLTRZXGMWDSKGL-UHFFFAOYSA-M perchlorate Inorganic materials [O-]Cl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-M 0.000 description 1
- 238000005289 physical deposition Methods 0.000 description 1
- 238000005240 physical vapour deposition Methods 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 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
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B45/00—Compositions or products which are defined by structure or arrangement of component of product
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06C—DETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
- C06C9/00—Chemical contact igniters; Chemical lighters
Definitions
- the invention relates to a microelectronic-pyrotechnic component, in particular for use in a safety device for vehicles.
- the Component is in particular an igniter or gas generator for use in Airbag modules or belt tensioners.
- Lighters for conventional gas generators consist of a a base sealed housing and ignition means inserted into the housing, over a heating wire, a thin film element or a Semiconductor bridge are ignited.
- the ignition means are often from one Primary charge and an amplifier charge with which the actual gas-generating mixture is brought to ignition. Lighter this Design can not be miniaturized due to their design principle. she Therefore, sometimes no longer meet the requirements of the automotive industry for components with low space requirements.
- DE 198 15 928 A1 discloses a semiconductor lighter for use in a gas generator for a safety device in vehicles, with one a carrier arranged with the interposition of a thermal insulation layer, connected at the end to electrical contact areas and at Current passage in the ignition gap area triggering the heating semiconductor layer.
- the thermal insulation layer is on the ignition gap area limited and preferably consists of porous silicon. For ignition amplification an explosive gas or gas mixture can be introduced into the porous silicon.
- the invention is based on the object, a simple assembled and inexpensive to manufacture microelectronic-pyrotechnic Component, in particular for safety-related applications in vehicles, provide.
- a component is proposed for this purpose, which has a core from an explosive material, the explosive material to the Sheath surrounding side surfaces of the core made of a solid semiconductor material and one between electrical contact surfaces on one of the end faces of the Kerns arranged ignition element, the ignition when current passes of the explosive material.
- the explosive material is out a porous fuel and one introduced into the porous fuel solid or liquid oxidizer formed.
- the porous fuel and the massive Semiconductor materials are the same and preferably consist of silicon, wherein the silicon can be heavily or weakly p-doped or n-doped.
- a membrane ie a layer of a few 1 ⁇ 4 m (e.g. 2 to 50 1 ⁇ 4 m) thick, made of a semiconductor material can be arranged, the semiconductor material of the jacket and the semiconductor material of the membrane preferably being made of the same material and in one piece.
- the membrane can be made of another material that can be easily produced on the semiconductor material of the jacket, such as SiO 2 .
- the membrane can be arranged between the ignition element and the explosive material.
- the ignition element is particularly preferably in direct contact with the explosive material. In this case, the ignition element and the membrane can lie on opposite end faces of the core.
- the component also preferably has a cover that the Ignition element or the explosive material gas and liquid tight closes.
- the cover and the membrane are preferably opposite one another End faces of the core or the component arranged. If that explosive material is stable to environmental influences Membrane and the lid are omitted.
- the ignition element and the lid is arranged on the same face.
- Ignition element can also be arranged on the cover, so that between the ignition element and explosive material a small gap remains. This enables one Prefabrication of the ignition element and the contact surfaces on the cover in one separate process step and thus ensures a particularly rational Production.
- the cover and the ignition element are located on opposite end faces of the component.
- the Ignition element is then preferably on that adjacent to the explosive material Membrane arranged.
- the lid is used to seal the material on the other end.
- the cover with the ignition element designed like a membrane, d. H. the lid has only a slight one Layer thickness in the 1 ⁇ 4m range (2 - 50 1 ⁇ 4m).
- the ignition element is preferably on arranged on the inside of the lid.
- On the one opposite the lid At the front of the core there is a thicker layer from the solid Semiconductor material of the jacket. This thicker layer is preferably in one piece formed with the coat.
- the cover can be made of all that can be connected to the semiconductor material Substances are formed.
- the lid preferably consists of semiconductor materials such as Silicon, or made of glass, ceramic or metal and is over conventional Joining techniques such as anodic bonding, glass solder bonding, eutectic Bonding, silicon direct bonding or conventional adhesive techniques with which Semiconductor material or the electrical contact surfaces connected.
- the ignition element is preferably a semiconductor bridge, for example the one in FIG DE 198 15 928 A1 type described, or a thin-film element z. B. as described in WO-A 98/54535, and experience one when the current passes sudden warming that triggers the ignition of the explosive material.
- the porous fuel is preferably a nanostructured material with a structure size of between approximately 2 nm and 1000 nm, preferably between 2 and 50 nm, and a porosity, ie a ratio of the pore volume to the volume of the porous sample body (V pores / V sample ) of between 10% and 98%, preferably 40 to 80%.
- the fuel can have a specific surface area of up to 1000 m 2 / cm 3 , preferably between 200 and 1000 m 2 / cm 3 .
- the fuel is particularly preferably one obtained by electrochemical etching porous silicon produced from a fluoride-containing solution. By tempering on Air can passivate the porous silicon. That so passivated porous silicon has an improved storage stability.
- oxidizer Hydrogen peroxide, hydroxylammonium nitrate, organic nitro compounds or nitrates, metal nitrates, nitrites, chlorates, perchlorates, bromates, iodates, -oxides, -peroxides, ammonium perchlorate or ammonium nitrate.
- the proportion of the aforementioned compounds in the oxidizer is preferably at least 50% by weight, particularly preferably at least 70% by weight.
- the oxidizer preferably consists wholly or partly of alkali metal nitrate or -perchlorate, alkaline earth metal nitrate or -perchlorate, ammonium nitrate, ammonium perchlorate or mixtures thereof.
- the oxidizer is particularly preferred Alkali metal nitrate or alkaline earth metal nitrate, optionally in a mixture with Ammonium perchlorate.
- Typical dimensions of the component according to the invention are in the range of 0.5 mm to 5 mm in length and width and a thickness of 0.3 mm to 3 mm.
- the component according to the invention is particularly useful as a lighter in safety-related terms Devices for vehicles, for example gas bag modules or Belt tensioners, suitable. It can be advantageous with known methods of silicon process technology getting produced. In particular, it is simple and inexpensive Manufacturing with high precision already in the batch process at the wafer level possible. The great pyrotechnic effect with the smallest dimensions and compact design also allows the implementation of a multi-point ignition, that could not be achieved with the known systems. Due to the high energy density and energy release rate of the component also on the previously common secondary ignition means for igniting the gas-generating Fuels are avoided. This is another miniaturization and weight reduction.
- the component according to the invention is can also be manufactured hermetically and therefore against environmental influences particularly insensitive.
- the igniter 10 according to the invention shown in FIGS. 1 to 4 has a core 12 made of an explosive material.
- the explosive material is preferably porous silicon with a structure size (size of the Si nanocrystals) of between 2 and 50 nm and a porosity (V pores / V sample ) between 40% and 80%.
- the porous silicon can be passivated in air by tempering.
- An oxidizing agent that is solid or liquid at room temperature is introduced into the pores of the porous silicon.
- the oxidizing agent is preferably selected from the group of alkali metal nitrates, alkaline earth metal nitrates, ammonium perchlorate and ammonium nitrate and mixtures thereof.
- other oxidizing agents such as organic nitro compounds or organic nitrates, can also be used. It is also possible to use alkali metal and alkaline earth metal perchlorates.
- the side surfaces of the core 12 made of the explosive material are from surrounded by a jacket 14 made of a solid semiconductor material.
- the semiconductor material of the jacket 14 and the core 12 are the same and preferred integrally executed. That is, the jacket 14 is preferably made of solid Silicon.
- the silicon can be weakly or heavily p-doped or n-doped. The use of undoped silicon is also possible.
- An ignition element 18 is arranged on one of the end faces 16 of the core 12.
- the ignition element 18 is located between electrical contact surfaces 20 in the embodiment shown here over the core 12 and the jacket 14 extend beyond and end with leads 22 for electrical contacts are connected.
- the ignition element 18 is preferably in direct contact with the core 12 made of the explosive material and releases when current is passed an ignition of this material.
- a membrane 26, that is to say a thin layer of only a few ⁇ m thick, made of the semiconductor material is arranged on the end face 24 of the core 12 opposite the end face 16.
- the semiconductor materials of the membrane 26 and the core 12 or the jacket 14 are of the same material and are made in one piece.
- the semiconductor material of the membrane 26 preferably also consists of silicon.
- the membrane can also be formed from SiO 2 , which can be easily produced on the semiconductor material of the jacket.
- the ignition element 18 arranged on the end face 16 of the core can be a Semiconductor bridge or a thin-film element of a known type.
- the electrical Contact surfaces can also be made of a semiconductor material, preferably silicon, but the doping and the Conduction type of the pad material and the materials of the core and the Coat can be different. Alternatively, the contact areas can be used as metallic layers of e.g. Sputtered on aluminum or gold.
- the ignition element is preferably gas-coated on the end face 16 with a cover 28. and sealed liquid-tight. In this embodiment, it can Ignition element can also be arranged on the cover 28, on the inside thereof, so that between the ignition element 18 and the core 12 from the explosive Material a narrow gap remains.
- the cover 28 is preferably made of silicon, glass, ceramic or metal formed and with conventional bonding, adhesive or other connection techniques forming a connection 30 with the semiconductor material of the Jacket 14 hermetically sealed.
- the contact areas are implanted or sputtered.
- the core 112 from the explosive Material also made of a porous semiconductor material, preferably porous Silicon.
- the porous silicon preferably has a structure size (size of the Si nano crystals) of between 2 and 50 nm and a porosity (V pores / V sample ) between 40% and 80%.
- An oxidizing agent that is solid or liquid at room temperature is introduced into the pores of the porous silicon.
- the oxidizing agent is preferably selected from the group of alkali metal nitrates and perchlorates, alkaline earth metal nitrates and perchlorates, ammonium perchlorate and ammonium nitrate and mixtures thereof.
- other oxidizing agents such as organic nitro compounds or organic nitrates, can also be used.
- the stoichiometry of the reactants i.e. porous Silicon and oxidizing agent.
- the stoichiometry influences the rate of energy release and thus the type of reaction that occurs between Burning, explosion and detonation may vary.
- Passivation of the porous silicon by tempering in air can also increase storage stability increased and the ignition behavior can be influenced.
- the side surfaces of the core 112 are also in this embodiment of FIG surrounded by a jacket 114 made of a solid semiconductor material.
- the Semiconductor material of the core 112 and the sheath 114 are of the same material and integrally formed.
- the jacket 114 is preferably made of solid Silicon.
- An ignition element 118 is arranged on the end face 116 of the core is located between electrically conductive contact surfaces 120.
- the contact areas have leads 122 for electrical contacts.
- the ignition element 118 can a semiconductor bridge or a thin-film element and solves Continuity from ignition of the explosive material.
- a membrane 126 that is a thin, only a few microns thick Layer of a semiconductor material arranged.
- the semiconductor material of the Membrane 126 is the same as the semiconductor material of the core 112 and Sheath 114, and integrally formed with these.
- the membrane can, however not applicable if the explosive material is stable against environmental influences is. In this case, the ignition element 118 can directly on the core 112 the explosive material.
- a cover 128 via a bond 130 with the jacket 114 or the Core 112 connected from the explosive material.
- the lid is there preferably made of silicon, glass, ceramic or metal. If the explosive Material of the core 112 is stable to environmental influences, the lid can omitted.
- the cover 128 closes flush as well as gas and liquid tight with the jacket 114.
- FIGS. 7 and 8 show a further embodiment of the invention Igniter 210 shown.
- Igniter 210 shown in this embodiment, that is at its Side faces of a jacket 214 made of a solid semiconductor material core 212 surrounded on one of its end faces 224 by a membrane 226 locked.
- the core 212 is preferably also in this embodiment made of porous silicon with the properties described above, in the Pores an oxidant is introduced.
- Membrane 226 is preferred identical to the solid semiconductor material of the jacket 214 and in one piece trained with this.
- the outer contact surfaces 232 are through vias 234 in electrical connection with the electrical contact surfaces 220 Ignition element 218 is arranged here on the inside of cover 228.
- the Lid 228 is using conventional bonding, gluing, or other joining techniques hermetically sealed with the semiconductor material of the jacket 214 connected.
- the electrical contact areas 220 and the outer contact areas can be implanted or sputtered.
- the vias 234 and the outer contact surfaces 232 also via electrochemical Deposition processes are formed.
- the outer contact surfaces 232 can, for example, via a spring-loaded contact system (not here shown) can be contacted with electrical leads.
- wafer disks made of silicon or other semiconductor materials are produced using known methods, as described, for example, in Physical Review Letters 87/6 (2001), pages 068301/1 to 068301/4, or WO-A- 96/36990 are subjected, in selected areas, to an etching treatment in a fluoride-containing electrolyte.
- the electrolyte is preferably a mixture of ethanol and aqueous hydrofluoric acid (50%) in a volume ratio of between 3: 1 and 1: 3.
- the current density of the anodizing current is preferably in the range between 20 and 70 mA / cm 2 .
- the wafer substrate can consist of n-doped, p-doped or undoped silicon. The doping can be weak or highly concentrated. During the etching treatment, the wafer substrate can be exposed in a known manner.
- the etching treatment leads to the formation of a core made of porous silicon a surrounding this core and formed integrally with the porous silicon Solid silicon sidewalls.
- the etching treatment is preferred performed so that on one of the end faces of the core or the wafer substrate a small remaining wall thickness due to a diffused etch stop (Membrane) of a few ⁇ m remains. If necessary, the substrate can also be etched through.
- porous semiconductor materials include chemical or physical deposition processes such as CVD, PVD, MOCVD, MBE or sputtering.
- the porous semiconductor material is in this case on a Deposits of solid semiconductor material deposited.
- the oxidizing agent in the pores of the core made of porous semiconductor material is at room temperature solid or liquid oxidizer introduced.
- the introduction can by Apply the oxidizing agent as a liquid or in solution and then Evaporation of the solvent take place.
- An order is also conceivable of the oxidizing agent as a melt and subsequent solidification in the pores of the porous silicon.
- the wafer substrate can be processed using conventional silicon processing techniques then provide the contacts with the cover substrate by means of known bonding technology hermetically sealed, in the desired size cut and finally contacted with the leads.
- the lid is applied and connected to the semiconductor material become.
- the present invention enables the production of an effective one Igniter for use in gas generators, belt tensioners or others safety equipment in vehicles according to known, in Large-scale and therefore inexpensive process steps.
- the chosen pyrotechnic system is highly effective and therefore particularly suitable for miniaturization.
- the igniter according to the invention can be easily integrated into an existing semiconductor circuit.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Air Bags (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
Description
- Figur 1 eine schematische Darstellung einer ersten Ausführungsform eines erfindungsgemäßen Anzünders;
- Figur 2 den Anzünder gemäß Figur 1 im Querschnitt;
- Figur 3 eine Draufsicht auf den Anzünder aus Figur 1 in schematischer Darstellung;
- Figur 4 eine Unteransicht des Anzünders aus Figur 1 in schematischer Darstellung;
- Figur 5 eine schematische Darstellung einer zweiten Ausführungsform des erfindungsgemäßen Anzünders;
- Figur 6 den erfindungsgemäßen Anzünder aus Figur 5 im Querschnitt.
- Figur 7 eine schematische Darstellung einer weiteren Ausführungsform des erfindungsgemäßen Anzünders;
- Figur 8 den erfindungsgemäßen Anzünder gemäß Figur 7 im Querschnitt.
Claims (20)
- Bauteil (10; 110; 210), insbesondere zur Verwendung in einer Sicherheitseinrichtung für Fahrzeuge, mit einem Kern (12; 112; 212) aus einem explosionsfähigen Material, einem das explosionsfähige Material an den Seitenflächen des Kerns (12; 112; 212) umgebenden Mantel (14; 114; 214) aus einem massiven Halbleitermaterial und einem zwischen elektrischen Kontaktflächen (20; 120; 220) an einer der Stirnseiten (16; 116; 216) des Kerns (12; 112; 212) angeordneten Zündelement (18; 118; 218), welches bei Stromdurchgang eine Zündung des explosionsfähigen Materials auslöst, wobei das explosionsfähige Material aus einem porösen Brennstoff und einem in den porösen Brennstoff eingebrachten Oxidator gebildet ist, und wobei der poröse Brennstoff und das massive Halbleitermaterial stoffgleich sind.
- Bauteil nach Anspruch 1, dadurch gekennzeichnet, daß an einer der Stirnseiten (16, 24; 116, 124; 216, 224) eine Membran (26; 126; 226) aus einem Halbleitermaterial angeordnet ist, wobei das Halbleitermaterial des Mantels (14; 114; 224) und das Halbleitermaterial der Membran (26; 126; 226) stoffgleich und einstückig miteinander ausgeführt sind.
- Bauteil nach Anspruch 1, dadurch gekennzeichnet, daß an einer der Stirnseiten (16, 24; 116, 124; 216, 224) eine Membran (26; 126; 226) angeordnet und einstückig mit dem Mantel verbunden ist, wobei das Halbleitermaterial des Mantels und der Membran aus unterschiedlichen Materialien bestehen.
- Bauteil nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß die Membran (126) zwischen dem Zündelement (118) und dem explosionsfähigen Material angeordnet ist.
- Bauteil nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Zündelement (18; 118; 218) in direktem Kontakt mit dem explosionsfähigen Material steht.
- Bauteil nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Zündelement (18; 118; 218) oder das explosionsfähige Material gas- und flüssigkeitsdicht mit einem Deckel (28; 128; 228) verschlossen sind.
- Bauteil nach Anspruch 6, dadurch gekennzeichnet, daß der Deckel (28; 128; 228) membranartig ausgestaltet ist, wobei auf der dem Deckel gegenüberliegenden Stirnseite (24; 124; 224) eine im Vergleich zum Deckel dickere massive Schicht aus dem Halbleitermaterial des Mantels angeordnet und mit dem Mantel (14; 114; 214) einstückig ausgeführt ist.
- Bauteil nach Anspruch 6, dadurch gekennzeichnet, daß der Deckel (28; 128; 228) und die Membran (26; 126; 226) auf einander gegenüberliegenden Stirnseiten (16, 24; 116, 124; 216, 224) angeordnet sind.
- Bauteil nach einem der Ansprüche 6 bis 8, dadurch gekennzeichnet, daß das Zündelement (18; 118; 218) und der Deckel (28; 128; 228) auf der gleichen Stirnseite (16; 116; 216) angeordnet ist.
- Bauteil nach Anspruch 9, dadurch gekennzeichnet, daß das Zündelement (18; 118; 218) auf der Innenseite des Deckels (28; 128; 228) angeordnet ist.
- Bauteil nach einem der Ansprüche 6 bis 10, dadurch gekennzeichnet, daß der Deckel (28; 128; 228) aus Halbleitermaterial wie Silizium, Glas, Keramik oder Metall gebildet ist.
- Bauteil nach einem der Ansprüche 6 bis 11, dadurch gekennzeichnet, daß der Deckel (28; 128; 228) aus Halbleitermaterial, vorzugsweise Silizium, gebildet ist und eine Durchkontaktierung (234) sowie äußere Kontaktflächen (232) aufweist.
- Bauteil nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Zündelement (18; 118; 218) eine Halbleiterbrücke oder ein Dünnschichtelement ist.
- Bauteil nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der poröse Brennstoff eine Strukturgröße von zwischen etwa 2 nm und 1000 nm und eine Porosität (VPoren/VProbe) von zwischen 10 % und 98% aufweist.
- Bauteil nach Anspruch 14, dadurch gekennzeichnet, daß der Brennstoff eine Strukturgröße von zwischen 2 nm und 50 nm aufweist.
- Bauteil nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Brennstoff eine spezifische Oberfläche von bis zu 1000 m2/cm3 aufweist.
- Bauteil nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Brennstoff poröses Silizium ist.
- Bauteil nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Oxidator in die Poren des porösen Brennstoffs eingebracht ist und Wasserstoffperoxid, Hydroxylammoniumnitrat, organische Nitroverbindungen und Nitrate, Metallnitrate, -nitrite, Metallchlorate, -perchlorate, -bromate, -jodate, -oxide, -peroxide, Ammoniumperchlorat, Ammoniumnitrat oder deren Mischungen enthält.
- Bauteil nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Oxidator aus der aus den Alkalimetallnitraten und -perchloraten, Erdalkalimetallnitraten und -perchloraten, Ammoniumnitrat, Ammoniumperchlorat und deren Mischungen bestehenden Gruppe ausgewählt ist.
- Bauteil nach Anspruch 19, dadurch gekennzeichnet, daß der Oxidator ein Alkalimetallnitrat oder Erdalkalimetallnitrat, gegebenenfalls im Gemisch mit Ammoniumperchlorat, ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10204833A DE10204833B4 (de) | 2002-02-06 | 2002-02-06 | Mikroelektronisch-Pyrotechnisches Bauteil |
DE10204833 | 2002-02-06 |
Publications (3)
Publication Number | Publication Date |
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EP1335178A2 true EP1335178A2 (de) | 2003-08-13 |
EP1335178A3 EP1335178A3 (de) | 2004-01-28 |
EP1335178B1 EP1335178B1 (de) | 2007-03-07 |
Family
ID=27588413
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Application Number | Title | Priority Date | Filing Date |
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EP03001251A Expired - Lifetime EP1335178B1 (de) | 2002-02-06 | 2003-01-21 | Mikroelektronisch-Pyrotechnisches Bauteil |
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Country | Link |
---|---|
US (1) | US7793592B2 (de) |
EP (1) | EP1335178B1 (de) |
DE (2) | DE10204833B4 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006058349A1 (en) * | 2004-11-24 | 2006-06-01 | The University Of Pretoria | Detonator device |
DE102005033269B3 (de) * | 2005-07-15 | 2007-02-15 | Trw Airbag Systems Gmbh | Mikroelektronisch-pyrotechnischer Anzünder |
US8801878B1 (en) | 2007-07-17 | 2014-08-12 | The United States Of America As Represented By The Secretary Of The Navy | Lead-free pyrotechnic and primary explosive compositions containing metal iodates |
DE102007057301B4 (de) | 2007-11-28 | 2022-06-15 | Volkswagen Ag | Airbag mit integrierten, separat zündbaren Teil-Treibgasladungen |
IL210260A (en) * | 2010-12-26 | 2015-08-31 | Rafael Advanced Defense Sys | A tiny system for securing a shatter chain |
CN102278769A (zh) * | 2011-08-12 | 2011-12-14 | 南京理工大学 | 孔内嵌导电含能材料的点火器件及其制法 |
US20140216288A1 (en) * | 2013-02-06 | 2014-08-07 | U.S. Army Research Laboratory Attn: Rdrl-Loc-I | Carbon nanotube and porous substrate integrated energetic device |
AU2019241883A1 (en) * | 2018-03-08 | 2020-09-24 | Orica International Pte Ltd | Systems, apparatuses, devices, and methods for initiating or detonating tertiary explosive media by way of photonic energy |
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DE3842917C1 (en) * | 1988-12-21 | 1989-11-30 | Messerschmitt-Boelkow-Blohm Gmbh, 8012 Ottobrunn, De | Fuze device for detonating a pyrotechnic charge |
DE19815928A1 (de) * | 1998-04-09 | 1999-11-04 | Daimler Chrysler Ag | Halbleiterzünder mit verbesserter konstruktiver Festigkeit |
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US2777389A (en) * | 1952-06-13 | 1957-01-15 | Hercules Powder Co Ltd | Initiating device and method of manufacture |
GB1308324A (en) * | 1970-02-04 | 1973-02-21 | Secr Defence | Manufacture of fuse heads |
US4928991A (en) * | 1989-03-08 | 1990-05-29 | Automotive Systems Laboratory, Inc. | Aspirating inflator assembly |
WO1996036990A1 (de) * | 1995-05-19 | 1996-11-21 | Hahn-Meitner-Institut Berlin Gmbh | Halbleiterbauelement auf der basis von silizium mit einer porösen schicht und verfahren für die herstellung poröser siliziumschichten |
DE59805957D1 (de) * | 1997-05-26 | 2002-11-21 | Conti Temic Microelectronic | Dünnschichtanzündelement für pyrotechnische wirkmassen und verfahren zu dessen herstellung |
US6131385A (en) | 1997-08-18 | 2000-10-17 | Trw Inc. | Integrated pulsed propulsion system for microsatellite |
US6431594B1 (en) * | 2001-01-05 | 2002-08-13 | Trw Vehicle Safety Systems Inc. | Air bag inflator with mechanism for deactivation of second stage and autoignition |
US6641074B2 (en) * | 2001-01-08 | 2003-11-04 | Trw Inc. | Seat belt webbing pretensioner using MEMS devices |
US6619692B2 (en) * | 2001-03-27 | 2003-09-16 | Trw Inc. | Air bag inflators |
US6584911B2 (en) * | 2001-04-26 | 2003-07-01 | Trw Inc. | Initiators for air bag inflators |
US6598899B2 (en) * | 2001-08-21 | 2003-07-29 | Trw Inc. | Inflatable seat belt using MEMS devices |
DE10162413B4 (de) * | 2001-12-19 | 2006-12-21 | Robert Bosch Gmbh | Integriertes Spreng- oder Zündelement und dessen Verwendung |
-
2002
- 2002-02-06 DE DE10204833A patent/DE10204833B4/de not_active Expired - Fee Related
-
2003
- 2003-01-21 EP EP03001251A patent/EP1335178B1/de not_active Expired - Lifetime
- 2003-01-21 DE DE50306709T patent/DE50306709D1/de not_active Expired - Lifetime
- 2003-02-06 US US10/360,497 patent/US7793592B2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3842917C1 (en) * | 1988-12-21 | 1989-11-30 | Messerschmitt-Boelkow-Blohm Gmbh, 8012 Ottobrunn, De | Fuze device for detonating a pyrotechnic charge |
DE19815928A1 (de) * | 1998-04-09 | 1999-11-04 | Daimler Chrysler Ag | Halbleiterzünder mit verbesserter konstruktiver Festigkeit |
Also Published As
Publication number | Publication date |
---|---|
DE10204833A1 (de) | 2003-08-21 |
EP1335178A3 (de) | 2004-01-28 |
EP1335178B1 (de) | 2007-03-07 |
US20030145758A1 (en) | 2003-08-07 |
DE50306709D1 (de) | 2007-04-19 |
DE10204833B4 (de) | 2005-11-10 |
US7793592B2 (en) | 2010-09-14 |
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