US4906341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing semiconductor device and apparatus therefor
Assignee: Toshiba Corp
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Filing: 1988-09-22
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Granted: 1990-03-06
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Expires: 2008-09-22
Abstract
Abstract A plating solution is stored in an annular plating solution storage. A plating solution tank having an open upper portion is arranged in a hollow portion of the storage. A mesh-like anode electrode is arranged on the bottom portion of the plating tank. Hold members are attached to an upper side wall of the plating tank. One of the hold members is in contact with a portion to be plated of a semiconductor member and serves as a cathode electrode. The anode and cathode electrodes are connected to a DC power source. The plating solution in the plating solution tank is brought into contact with the portion to be plated and is isolated therefrom by an driving pump intermittently driven at predetermined intervals using an intermittent drive unit. The power source is kept in the ON state while the plating solution is in contact with the portion to be plated, there-by forming a plated layer on the portion to be plated.
Inventors
- 👤 Koji Yamakawa
- 👤 Kaoru Koiwa
- 👤 Nobuo Iwase
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:21
CPC Classifications
H; H10; H10W; H10W72/00; H10W72/01; H10W72/012; H10W72/01231; H10W72/01233; H10W72/01235; H10W72/01251; H10W72/01255; H10W72/20; H10W72/231; H10W72/234; H10W72/251; H10W72/90; H10W72/921; H10W72/923; H10W72/951; H10W72/952
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
95 words
A method of manufacturing a semiconductor device having a semiconductor member with plural portions to be plated, comprising the steps of: commencing plating of said portions of said semiconductor member by bringing a plating solution into soaking contact with said plural portions of said semiconductor member; temporarily interrupting plating of said portion by isolating said plating solution from said portions to be plated so that said portions are temporarily not in soaking contact with said plating solution; and recommencing plating by again bringing said portions to be plated into soaking contact with said plating solution.
Claim 2
Independent Claim
95 words
A method of manufacturing a semiconductor device having a semiconductor member with plural portions to be plated, comprising the steps of: commencing plating of said portions of said semiconductor member by bringing a plating solution into soaking contact with said plural portions of said semiconductor member; temporarily interrupting plating of said portion by isolating said plating solution from said portions to be plated so that said portions are temporarily not in soaking contact with said plating solution; and recommencing plating by again bringing said portions to be plated into soaking contact with said plating solution.
Claim 3
Dependent Claim
20 words
A method according to claim 1, wherein said temporarily interrupting and recommencing plating steps are performed a plurality of times.
Claim 4
Dependent Claim
17 words
A method according to claim 1, wherein said commencing and recommencing plating steps are performed by electroplating.
Claim 5
Dependent Claim
18 words
A method according to claim 1, wherein said commencing and recommencing plating steps are performed by electroless plating.
Claim 6
Dependent Claim
18 words
A method according to claim 1, wherein plural bumps are formed by said commencing and recommencing plating steps.
Claim 7
Independent Claim
177 words
A method of manufacturing a semiconductor device having a semiconductor member provided with plural bumps, comprising the steps of: forming an insulating film on a surface of a semiconductor member so as to expose portions of electrodes formed on said semiconductor member; coating a conductive film on the insulating film and on an entire surface of each of said exposed portions of said electrodes; forming opening portions above said conductive film so as to expose portions of said conductive film corresponding to said exposed portions of said electrode; and forming bumps on said conductive film, comprising, bringing said plating solution into soaking contact with said exposed portions of said conductive film and commencing plating of said exposed portions, temporarily interrupting plating of said exposed portions by isolating said plating solution from said exposed portions of said conductive film so that said exposed portions are temporarily not in contact with said plating solution, and again bringing said exposed portions into soaking contact with said plating solution to recommence plating of said exposed portions, thereby to form said bumps.
Claim 8
Independent Claim
177 words
A method of manufacturing a semiconductor device having a semiconductor member provided with plural bumps, comprising the steps of: forming an insulating film on a surface of a semiconductor member so as to expose portions of electrodes formed on said semiconductor member; coating a conductive film on the insulating film and on an entire surface of each of said exposed portions of said electrodes; forming opening portions above said conductive film so as to expose portions of said conductive film corresponding to said exposed portions of said electrode; and forming bumps on said conductive film, comprising, bringing said plating solution into soaking contact with said exposed portions of said conductive film and commencing plating of said exposed portions, temporarily interrupting plating of said exposed portions by isolating said plating solution from said exposed portions of said conductive film so that said exposed portions are temporarily not in contact with said plating solution, and again bringing said exposed portions into soaking contact with said plating solution to recommence plating of said exposed portions, thereby to form said bumps.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-03-05 | 1993-09-04 | 1994-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-05 | 1997-09-04 | 1998-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-03-05 | 2001-09-04 | 2002-03-06 | $7700.00 | Window Closed / Lapsed |