EP1520063B1 - Bain pour depot electrolytique d'or - Google Patents
Bain pour depot electrolytique d'or Download PDFInfo
- Publication number
- EP1520063B1 EP1520063B1 EP03729763A EP03729763A EP1520063B1 EP 1520063 B1 EP1520063 B1 EP 1520063B1 EP 03729763 A EP03729763 A EP 03729763A EP 03729763 A EP03729763 A EP 03729763A EP 1520063 B1 EP1520063 B1 EP 1520063B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gold
- bismuth
- bath
- soluble
- ammonium
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/48—Electroplating: Baths therefor from solutions of gold
Definitions
- the present invention relates to the field of baths for deposits Electrolytic. It concerns, more particularly, a sulphite gold bath of type of those used to lay layers of both ductile gold and thick, that is to say typically more than 200 microns. These deposits are particularly well adapted, in particular, to the production of protuberances conductors, known as "bumps", used to connect electronic chips.
- toxicity is a very relative notion, we will define as toxic a harmful substance in the quantities used for the intended application and as non-toxic a substance that is not harmful for this application.
- the sulphite gold baths currently known provide deposits too hard, which requires an additional heat treatment to soften them.
- they use toxic grain refiners, containing arsenic or thallium.
- the solutions obtained are aggressive and attack the substrates, especially when it comes to photoresists.
- the main purpose of the present invention is to provide a sulphite gold bath free of toxic compounds and making a deposit particularly soft, without resorting to a subsequent heat treatment.
- the pH of the bath obtained is neutral and the solution does not attack the photoresists commonly used.
- the bath according to the invention is of the type comprising, in solution in water, gold sulphite, a grain refiner selected from soluble compounds of bismuth, tin, tellurium and selenium, a complexing agent and a conductive salt.
- This bath is characterized in that it comprises, in addition, amidosulfonic acid.
- the bath obtained uses neither toxic gold salt nor toxic grain refiner. In addition, it allows to obtain soft deposits, typically presenting a hardness between 50 and 70 Vickers, without the need to perform a any heat treatment.
- the solution obtained does not attack the substrates on which bumps are commonly deposited and its pH is typically between 6.7 and 7.5.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating And Plating Baths Therefor (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Description
- de 7 à 20 g/L d'or, sous la forme de sulfite d'or choisi parmi d'autres sels solubles d'or pour la qualité du dépôt obtenu,
- de 5 à 50 mg/L de bismuth, sous la forme d'un sel soluble de citrate d'ammonium et de bismuth, utilisé comme affineur de grain non-toxique,
- de 10 à 50 mL/L d'un dérivé d'acide phosphonique, par exemple, le produit connu sous le nom de Dequest 2010, utilisé comme complexant,
- de 20 à 100 g/L de sulfite d'ammonium, utilisé comme sel conducteur pour l'électrodéposition, et
- de 20 à 100 g/L d'acide amidosulfonique, également utilisé comme sel conducteur.
- 10 g/L d'or, sous la forme de sulfite d'or,
- 15 mg/L de bismuth, sous la forme d'un sel soluble de citrate d'ammonium et de bismuth,
- 25 mL/L de Dequest 2010,
- 50 g/L de sulfite d'ammonium, et
- 50 g/L d'acide amidosulfonique.
Claims (6)
- Bain pour dépôt électrolytique d'or, comportant, en solution dans de l'eau, du sulfite d'or, un affineur de grain choisi parmi des composés solubles de bismuth, d'étain, de tellure et de sélénium, un complexant et un sel conducteur, caractérisé en ce qu'il comporte, en outre, de l'acide amidosulfonique.
- Bain selon la revendication 1, caractérisé en ce que ledit composé de bismuth est un complexe soluble de citrate d'ammonium et de bismuth.
- Bain selon l'une des revendications 1 et 2, caractérisé en ce que ledit complexant contient un dérivé d'acide phosphonique.
- Bain selon l'une des revendications 1 à 3, caractérisé en ce que ledit sel conducteur est du sulfite d'ammonium.
- Bain selon la revendication 4, caractérisé en ce qu'il comporte:de 7 à 20 g/L d'or,de 5 à 50 mg/L de bismuth,de 10 à 50 mL/L d'un dérivé d'acide phosphonique,de 20 à 100 g/L de sulfite d'ammonium,de 20 à 100 g/L d'acide amidosulfonique.
- Bain selon la revendication 5, caractérisé en ce qu'il comporte :10 g/L d'or,15 mg/L de bismuth,25 mL/L d'un dérivé d'acide phosphonique,50 g/L de sulfite d'ammonium, et50 g/L d'acide amidosulfonique.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP03729763A EP1520063B1 (fr) | 2002-07-04 | 2003-06-20 | Bain pour depot electrolytique d'or |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP02405558A EP1378590A1 (fr) | 2002-07-04 | 2002-07-04 | Bain pour dépôts electrolytiques d'or |
| EP02405558 | 2002-07-04 | ||
| PCT/CH2003/000400 WO2004005589A1 (fr) | 2002-07-04 | 2003-06-20 | Bain pour depôt electrolytique d’or |
| EP03729763A EP1520063B1 (fr) | 2002-07-04 | 2003-06-20 | Bain pour depot electrolytique d'or |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1520063A1 EP1520063A1 (fr) | 2005-04-06 |
| EP1520063B1 true EP1520063B1 (fr) | 2005-10-26 |
Family
ID=29719808
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02405558A Withdrawn EP1378590A1 (fr) | 2002-07-04 | 2002-07-04 | Bain pour dépôts electrolytiques d'or |
| EP03729763A Expired - Lifetime EP1520063B1 (fr) | 2002-07-04 | 2003-06-20 | Bain pour depot electrolytique d'or |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02405558A Withdrawn EP1378590A1 (fr) | 2002-07-04 | 2002-07-04 | Bain pour dépôts electrolytiques d'or |
Country Status (6)
| Country | Link |
|---|---|
| EP (2) | EP1378590A1 (fr) |
| AT (1) | ATE307918T1 (fr) |
| AU (1) | AU2003240347A1 (fr) |
| DE (1) | DE60302074T2 (fr) |
| ES (1) | ES2252673T3 (fr) |
| WO (1) | WO2004005589A1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101464343B1 (ko) * | 2013-04-02 | 2014-11-28 | 한밭대학교 산학협력단 | 범프 형성용 비시안계 금 도금욕 및 범프의 형성방법 |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005036133C5 (de) | 2005-07-26 | 2017-07-13 | Ivoclar Vivadent Ag | Bad für die galvanische Abscheidung von Gold und Goldlegierungen und Zusatzgemisch für ein solches Bad |
| CN103741180B (zh) * | 2014-01-10 | 2015-11-25 | 哈尔滨工业大学 | 无氰光亮电镀金添加剂及其应用 |
| CN103741181B (zh) * | 2014-01-10 | 2016-01-27 | 哈尔滨工业大学 | 一种多配位剂无氰电镀金镀液及电镀金工艺 |
| CN107299366A (zh) * | 2017-08-24 | 2017-10-27 | 重庆立道表面技术有限公司 | 无氰镀铜电镀液 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE754151A (fr) * | 1969-08-08 | 1970-12-31 | Sel Rex Corp | Bain aqueux pour le placage electrolytique d'or ou d'alliage d'or sur un article conducteur, procede de fabrication dudit bain aqueux et utilisation de celui-ci |
| CH530473A (fr) * | 1969-08-19 | 1972-11-15 | Sel Rex Corp | Procédé pour le dépôt électrolytique d'or brillant et bain électrolytique pour la mise en oeuvre de ce proédé |
| DD245787A3 (de) * | 1984-10-25 | 1987-05-20 | Mikroelektronik Friedrich Enge | Bad fuer die hochgeschwindigkeitsabscheidung von gold |
| US4795534A (en) * | 1986-09-25 | 1989-01-03 | Vanguard Research Associates, Inc. | Electrolyte solution and process for gold electroplating |
| DE3805627A1 (de) * | 1988-02-24 | 1989-09-07 | Wieland Edelmetalle | Goldbad |
| DE3905705A1 (de) * | 1989-02-24 | 1990-08-30 | Degussa | Bad zur galvanischen abscheidung von feingoldueberzuegen |
| DE4226167C2 (de) * | 1992-08-07 | 1996-10-24 | Sel Alcatel Ag | Verfahren zum elektrisch leitenden Verbinden unter Anwendung der Flipchip-Technik |
| DE4425110C1 (de) * | 1994-07-15 | 1995-10-26 | Heraeus Gmbh W C | Wäßriges Bad für die galvanische Abscheidung von Palladiumüberzügen, Verfahren der galvanischen Abscheidung sowie Verwendung des Bades |
| BR0207724A (pt) * | 2001-02-28 | 2004-03-23 | Wieland Dental & Technik Gmbh | Banho para a eletrodeposição de ouro e ligas de ouro e o uso do mesmo |
-
2002
- 2002-07-04 EP EP02405558A patent/EP1378590A1/fr not_active Withdrawn
-
2003
- 2003-06-20 DE DE60302074T patent/DE60302074T2/de not_active Expired - Fee Related
- 2003-06-20 EP EP03729763A patent/EP1520063B1/fr not_active Expired - Lifetime
- 2003-06-20 AT AT03729763T patent/ATE307918T1/de not_active IP Right Cessation
- 2003-06-20 AU AU2003240347A patent/AU2003240347A1/en not_active Abandoned
- 2003-06-20 WO PCT/CH2003/000400 patent/WO2004005589A1/fr not_active Ceased
- 2003-06-20 ES ES03729763T patent/ES2252673T3/es not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101464343B1 (ko) * | 2013-04-02 | 2014-11-28 | 한밭대학교 산학협력단 | 범프 형성용 비시안계 금 도금욕 및 범프의 형성방법 |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2004005589A1 (fr) | 2004-01-15 |
| EP1520063A1 (fr) | 2005-04-06 |
| ATE307918T1 (de) | 2005-11-15 |
| ES2252673T3 (es) | 2006-05-16 |
| DE60302074T2 (de) | 2006-07-13 |
| EP1378590A1 (fr) | 2004-01-07 |
| DE60302074D1 (de) | 2005-12-01 |
| AU2003240347A1 (en) | 2004-01-23 |
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