NL192313C - Anti-oxydatiestelsel voor een draadhechtinrichting, gebruikmakend van een koperdraad. - Google Patents
Anti-oxydatiestelsel voor een draadhechtinrichting, gebruikmakend van een koperdraad. Download PDFInfo
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- NL192313C NL192313C NL8901395A NL8901395A NL192313C NL 192313 C NL192313 C NL 192313C NL 8901395 A NL8901395 A NL 8901395A NL 8901395 A NL8901395 A NL 8901395A NL 192313 C NL192313 C NL 192313C
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- wire
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- oxidation
- capillary device
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
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- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/80—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected
- H01L24/85—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected using a wire connector
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/002—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating specially adapted for particular articles or work
- B23K20/004—Wire welding
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- B23K20/007—Ball bonding
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- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/14—Preventing or minimising gas access, or using protective gases or vacuum during welding
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Description
1 192313
Anti-oxidatiestelsel voor een draadhechtinrichting, gebruikmakend van een koperdraad
De uitvinding heeft betrekking op een anti-oxidatiestelsel voor een draadhechtinrichting bestemd voor het hechten van een draad tussen een chipsbekleedsel en een verbindingsframe voor een halfgeleiderinrichting, 5 waarbij de draad een oxideeibaar materiaal, zoals koper of aluminium bevat, en waarbij de draadhechtinrichting is voorzien van een met de draad bewikkelde spoel, van een rondom de aan het chipsbekleedsel en het verbindingsframe toe te voeren draad aan te brengen capillairinrichting, van een gasbuis voor het toevoeren van een reducerend gas rondom de capillairinrichting, en van een tegenover de capillairinrichting aangebrachte toortselektrode.
10 Een dergelijk stelsel is bekend uit de Britse octrooiaanvrage nr. GB-A-2.171.042.
Teneinde oxidatie van de te hechten draad te voorkomen, en daardoor de hechtsterkte te vergroten, wordt bij het bekende stelsel bij het toepassen van de kogelhechtmethode, in een constante stroom reducerend gas rondom de capillairinrichting toegevoerd. Hierdoor is de capillairinrichting voortdurend , omgeven door het reducerend gas. De aanwezigheid van het reducerend gas bij de capillairinrichting is 15 echter het meest functioneel nabij de toortselektrode, en wel tijdens het tot stand brengen van een elektrische ontlading wanneer de kogel aan het uiteinde van de draad wordt gevormd. Er vindt derhalve bij het bekende anti-oxidatiestelsel, door de capillairinrichting volledig te omgeven met reducerend gas, verspilling van dit gas plaats.
Bovendien heeft de bekende draadhechtinrichting het bezwaar, dat de spoel niet van de atmosfeer is 20 afgeschermd, waardoor er oxidatie van de draad op de spoel kan plaatsvinden.
De uitvinding beoogt de hiervoor beschreven nadelen te ondervangen en heeft hiertoe als kenmerk, dat het reducerend gas periodiek rond de met de draad bewikkelde spoel wordt gevoerd, dat het reducerend gas door meer dan één gasbuis met direct onder het einde van de capillairinrichting aangebrachte uitstroomopeningen wordt toegevoerd, en dat de toortselektrode tegenover een onderoppervlak van een van 25 de gasbuizen is aangebracht.
Opgemerkt wordt dat uit het Amerikaanse octrooischrift 4.674.671 een draadhechtinrichting bekend is, die is voorzien van een gasbuis waarvan de uitstroomopening is aangebracht tussen het einde van een ’’hechtinstrument (22)” (bonding tooi) en een toortselektrode, waarbij het reducerend gas een gasmengsel is van waterstof en stikstof. Het ’’hechtinstrument” is echter ingericht voor het uitvoeren van een thermosoni-30 sche hechtmethode.
De uitvinding wordt toegelicht aan de hand van de tekening, waarin: figuur 1 een schematische afbeelding is van een anti-oxidatiestelsel volgens een voorkeursuitvoeringsvorm van de uitvinding; 35 figuur 2 in detail en op vergrote schaal een deel van het toestel volgens figuur 1 toont; en
De figuren 3A-3E verschillende stappen van de hechtbewerking verduidelijken, uitgevoerd volgens de uitvinding.
Figuur 1 toont een diffusor 6, aangebracht op het binnenbovendeel van een deksel 1, en deze diffusor 6 is 40 verbonden met een gashouder 9 via een leiding 8, welke gaat door een verbindingsbuis 7. Een gas-stroomregelaar 10 en een elektrische klep 11 zijn in de gasbaan opgenomen; deze elektrische klep 11 opent periodiek gedurende 10 seconden en sluit vervolgens gedurende 20 seconden. De besturing geschiedt door middel van een tijdsbesturingsorgaan 12. Elk geschikt tijdsbesturingsorgaan kan worden gebruikt; aangegeven is dat een door een elektronische tijdketen 12a geleverd signaal via een versterker 45 12b wordt aangelegd aan het besturingselement van de elektroklep 11 om deze te openen en te sluiten. Gasbuizen 31,32 (figuren 2,3A, 3B) zijn aangebracht aan weerskanten van een capillair toestel 5, waarmee de draad kan worden uitgetrokken en een toortselektrode 30 is direct onder het capillairtoestel 5 aangebracht met het buitenoppervlak gericht naar een van de zijgasbuizen.
De draad 20, die wordt afgewikkeld van de spoel 2 onder het deksel 1, wordt uitgetrokken via een 50 u'itvoerbuis 3 en via een aantal, reeds genoemde, klemmen 4 naar het capillairtoestel 5 geleid. Op dit moment wordt, onder besturing van de tijdsbesturing 12, welke de elektroklep 11 opent, periodiek een in de container 9 aanwezig inactief gas geïnjecteerd in de binnenzijde van het deksel 1 via de gasregelaar 10, zodanig dat gedurende 10 seconden gas wordt geïnjecteerd, waarop een pauze van 20 seconden volgt. Als inactief gas kan een mengsel van waterstof of stikstof of een mengsel van waterstof en argon worden 55 gebruikt.
De hoeveelheid gas wordt zodanig geregeld dat de gasdruk binnen het deksel 1 een zodanige waarde bereikt dat de draad 20 gemakkelijk van de spoel 2 vrijkomt. Het inactieve gas, geïnjecteerd binnen in het
Claims (2)
1. Anti-oxidatiestelsel voor een draadhechtinrichting bestemd voor het hechten van een draad tussen een chipsbekleedsel en een verbindingsframe voor een halfgeleiderinrichting, waarbij de draad een oxideerbaar materiaal, zoals koper of aluminium bevat, en waarbij de draadhechtinrichting is voorzien van een met de draad bewikkelde spoel, van een rondom de aan het chipsbekleedsel en het verbindingsframe toe te voeren draad aan te brengen capillairinrichting, van een gasbuis voor het toevoeren van een reducerend gas 40 rondom de capillairinrichting, en van een tegenover de capillairinrichting aangebrachte toortselektrode, met het kenmerk, dat het reducerend gas periodiek rond de met de draad (20) bewikkelde spoel (2) wordt gevoerd, dat het reducerend gas door meer dan één gasbuis (31, 32) met direct onder het einde van de capillairinrichting (5) aangebrachte uitstroomopeningen wordt toegevoerd, en dat de toortselektrode (30) tegenover een onderoppervlak van een van de gasbuizen (31,32) is aangebracht.
2. Anti-oxidatiestelsel volgens conclusie 1, met het kenmerk, dat het reducerend gas een mengsel is van waterstof en stikstof of een mengsel van argon en waterstof of een andere combinatie van deze stoffen. Hierbij 3 bladen tekening
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR880006623 | 1988-06-02 | ||
KR1019880006623A KR920000628B1 (ko) | 1988-06-02 | 1988-06-02 | 와이어 본더의 스풀마운터 산화방지시스템 |
KR880008038 | 1988-06-30 | ||
KR1019880008038A KR900001010A (ko) | 1988-06-30 | 1988-06-30 | 동(銅)선을 이용한 와이어 본딩 방법 및 장치 |
Publications (3)
Publication Number | Publication Date |
---|---|
NL8901395A NL8901395A (nl) | 1990-01-02 |
NL192313B NL192313B (nl) | 1997-01-06 |
NL192313C true NL192313C (nl) | 1997-05-07 |
Family
ID=26627855
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL8901395A NL192313C (nl) | 1988-06-02 | 1989-06-01 | Anti-oxydatiestelsel voor een draadhechtinrichting, gebruikmakend van een koperdraad. |
Country Status (6)
Country | Link |
---|---|
US (1) | US4995552A (nl) |
JP (1) | JPH0618223B2 (nl) |
DE (1) | DE3915472C2 (nl) |
FR (1) | FR2632229B1 (nl) |
GB (1) | GB2220101B (nl) |
NL (1) | NL192313C (nl) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3911027A1 (de) * | 1989-04-05 | 1990-10-11 | Siemens Ag | Verfahren zum verbinden von anschlusselementen mit lackisolierten draehten |
JP2888463B2 (ja) * | 1991-09-23 | 1999-05-10 | 健 柳沢 | 2次元運動機構 |
JP2776100B2 (ja) * | 1991-12-10 | 1998-07-16 | 日本電気株式会社 | ワイヤボンディング装置 |
NL9200396A (nl) * | 1992-03-03 | 1993-10-01 | Nedap Nv | Radiofrequente identificatielabel met relatief grote detectie-afstand en een minimum aantal electronische componenten. |
US5603892A (en) * | 1994-06-09 | 1997-02-18 | Fujitsu Limited | System for maintaining a controlled atmosphere in an electronic circuit package |
DE19604287C2 (de) * | 1996-02-07 | 1999-12-09 | Fraunhofer Ges Forschung | Vorrichtung zur Beaufschlagung eines Drahtendes in einer Drahtbondeinrichtung mit einem Schutzmedium |
CA2377628A1 (en) * | 1999-06-28 | 2001-01-04 | Jurgen Ramm | Component and method for the production thereof |
US6373137B1 (en) * | 2000-03-21 | 2002-04-16 | Micron Technology, Inc. | Copper interconnect for an integrated circuit and methods for its fabrication |
US6630910B2 (en) | 2001-10-29 | 2003-10-07 | Marconi Communications Inc. | Wave antenna wireless communication device and method |
US20070251980A1 (en) * | 2006-04-26 | 2007-11-01 | Gillotti Gary S | Reduced oxidation system for wire bonding |
CN105149808B (zh) * | 2015-09-30 | 2017-03-29 | 河南科技大学 | 一种可控制钎焊球大小的钎焊球加工装置及加工方法 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3125906A (en) * | 1964-03-24 | Lead bonding machine | ||
JPS55128396A (en) * | 1979-03-26 | 1980-10-04 | Packer Eng Ass | Zn alloy wax and its use |
US4476365A (en) * | 1982-10-08 | 1984-10-09 | Fairchild Camera & Instrument Corp. | Cover gas control of bonding ball formation |
US4549059A (en) * | 1982-11-24 | 1985-10-22 | Nec Corporation | Wire bonder with controlled atmosphere |
JPS607137A (ja) * | 1983-06-27 | 1985-01-14 | Shinkawa Ltd | ワイヤボンダ用ボ−ル形成装置 |
EP0169574B1 (en) * | 1984-07-27 | 1990-04-25 | Kabushiki Kaisha Toshiba | Apparatus for manufacturing semiconductor device |
JPS61159743A (ja) * | 1985-01-07 | 1986-07-19 | Toshiba Corp | ワイヤボンディング方法および装置 |
US4674671A (en) * | 1985-11-04 | 1987-06-23 | Olin Corporation | Thermosonic palladium lead wire bonding |
DE3851901T2 (de) * | 1987-01-26 | 1995-04-13 | Hitachi Ltd | Anschweissen eines Drahtes. |
-
1989
- 1989-05-11 DE DE3915472A patent/DE3915472C2/de not_active Expired - Lifetime
- 1989-05-23 JP JP1127972A patent/JPH0618223B2/ja not_active Expired - Fee Related
- 1989-05-23 US US07/356,547 patent/US4995552A/en not_active Expired - Lifetime
- 1989-05-30 FR FR898907102A patent/FR2632229B1/fr not_active Expired - Lifetime
- 1989-06-01 NL NL8901395A patent/NL192313C/nl not_active IP Right Cessation
- 1989-06-02 GB GB8912761A patent/GB2220101B/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE3915472A1 (de) | 1989-12-07 |
JPH0618223B2 (ja) | 1994-03-09 |
FR2632229B1 (fr) | 1991-11-29 |
NL192313B (nl) | 1997-01-06 |
DE3915472C2 (de) | 1995-11-30 |
GB2220101A (en) | 1989-12-28 |
US4995552A (en) | 1991-02-26 |
FR2632229A1 (fr) | 1989-12-08 |
GB8912761D0 (en) | 1989-07-19 |
GB2220101B (en) | 1992-09-09 |
JPH0225044A (ja) | 1990-01-26 |
NL8901395A (nl) | 1990-01-02 |
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