US5278104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor wafer carrier having a dust cover
Assignee: Toshiba Corp
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Filing: 1992-04-20
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Granted: 1994-01-11
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Expires: 2012-04-20
Abstract
Abstract A semiconductor device support carrier used for a liquid phase process of a semiconductor device with a process liquid is disclosed. The semiconductor device support carrier comprises a support frame supporting the semiconductor device, and a dust protection plate mounted on the support frame and positioned above the semiconductor device. When the semiconductor device support carrier is drawn up from the process liquid, dust in the process liquid is pushed aside and out of the semiconductor device by the dust protection plate.
Inventors
- 👤 Masako Kodera
- 👤 Tohru Watanabe
- 👤 Katsuya Okumura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:03
CPC Classifications
H; H10; H10P; H10P72/00; H10P72/10; H10P72/15; H10P72/19; H10P72/1922; Y; Y10; Y10S; Y10S134/00; Y10S134/902; Y10S414/00; Y10S414/135
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
83 words
A method of protecting a plurality of semiconductor wafers from dust in a process liquid, comprising the steps of: positioning said semiconductor wafers vertically in a support frame; mounting a dust protection plate horizontally on top of said support frame, wherein said dust protection plate entirely covers each said semiconductor wafer; lowering said support frame into said process liquid; and raising said support frame from said process liquid, wherein said dust in said process liquid is pushed aside out of said semiconductor wafers.
Claim 2
Independent Claim
83 words
A method of protecting a plurality of semiconductor wafers from dust in a process liquid, comprising the steps of: positioning said semiconductor wafers vertically in a support frame; mounting a dust protection plate horizontally on top of said support frame, wherein said dust protection plate entirely covers each said semiconductor wafer; lowering said support frame into said process liquid; and raising said support frame from said process liquid, wherein said dust in said process liquid is pushed aside out of said semiconductor wafers.
Claim 3
Dependent Claim
99 words
A semiconductor device support carrier for use in a liquid phase process of semiconductor wafer processing with a process liquid, said carrier comprising: a support frame supporting a plurality of semiconductor wafers such that said semiconductor wafers are positioned in a vertical direction, and a dust protection plate mounted on said support frame and positioned in a horizontal direction above, and in a perpendicular direction to, said semiconductor wafers so as to entirely cover each said semiconductor wafer, such that dust in said process liquid is pushed away from said semiconductor wafers when said support frame is drawn up.
Claim 4
Dependent Claim
99 words
A semiconductor device support carrier for use in a liquid phase process of semiconductor wafer processing with a process liquid, said carrier comprising: a support frame supporting a plurality of semiconductor wafers such that said semiconductor wafers are positioned in a vertical direction, and a dust protection plate mounted on said support frame and positioned in a horizontal direction above, and in a perpendicular direction to, said semiconductor wafers so as to entirely cover each said semiconductor wafer, such that dust in said process liquid is pushed away from said semiconductor wafers when said support frame is drawn up.
Claim 5
Dependent Claim
19 words
The semiconductor device support carrier as claimed in claim 2, wherein said dust protection plate consists of two parts.
Claim 6
Dependent Claim
22 words
The semiconductor device support carrier as claimed in claim 3, wherein said two parts are able to slide on said support frame.
Claim 7
Dependent Claim
32 words
The semiconductor device support carrier as claimed in claim 2, wherein said dust protection plate is detachably mounted on said support frame and a handle is secured to said dust protection plate.
Claim 8
Dependent Claim
102 words
A semiconductor device support carrier for use in a liquid phase process of semiconductor wafer processing with a process liquid, said carrier comprising: a support frame so supporting a semiconductor wafer and having both surfaces parallel to the wafer such that said semiconductor wafer is positioned in a vertical direction, and a pair of dust protection plates mounted on said support frame and positioned in a vertical direction so as to entirely cover both of the surfaces of each said semiconductor wafer, said dust protection plates having upper ends which are bent inward and in a direction perpendicular to said semiconductor wafer.
Claim 9
Dependent Claim
102 words
A semiconductor device support carrier for use in a liquid phase process of semiconductor wafer processing with a process liquid, said carrier comprising: a support frame so supporting a semiconductor wafer and having both surfaces parallel to the wafer such that said semiconductor wafer is positioned in a vertical direction, and a pair of dust protection plates mounted on said support frame and positioned in a vertical direction so as to entirely cover both of the surfaces of each said semiconductor wafer, said dust protection plates having upper ends which are bent inward and in a direction perpendicular to said semiconductor wafer.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-01-10 | 1997-07-12 | 1998-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-01-10 | 2001-07-12 | 2002-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-01-10 | 2005-07-12 | 2006-01-11 | $7700.00 | Window Closed / Lapsed |