US5074736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor wafer carrier design
Assignee: Texas Instruments Inc
•
Filing: 1990-12-19
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Granted: 1991-12-24
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Expires: 2010-12-19
Abstract
Abstract A carrier-susceptor for use in a continuous chemical vapor deposition reactor system serves as a carrier, cover and heat susceptor for a semiconductor wafer being processes through the reactor system.
Inventors
- 👤 Kaoru Ishii
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:08
CPC Classifications
H; H10; H10P; H10P72/00; H10P72/10; H10P72/18; Y; Y10; Y10S; Y10S414/00; Y10S414/135; Y10S414/137; Y10S414/138
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
164 words
A semiconductor wafer carrier-susceptor for use in a continuous chemical vapor deposition reactor, comprising a generally rectangular body of a high temperature material having two major faces, first and second ends, and two sides, one major face having a recess formed in and extending across said one major face, two sides of said recess having lips extending out from the sides of the recess forming two tracks in the sides of the recess such that a semiconductor wafer may be placed in the tracks in the recess and held therein when the carrier-susceptor is positioned with the recess and said one major face in a downward position, said carrier-susceptor also having circular grooves, one each groove extending across a respective one of said first and second ends, said grooves formed in said one major face and its respective end,; and wherein the tracks are open at two sides of the carrier-susceptor to allow loading of the semiconductor wafer into either side of the carrier-susceptor.
Claim 2
Dependent Claim
164 words
A semiconductor wafer carrier-susceptor for use in a continuous chemical vapor deposition reactor, comprising a generally rectangular body of a high temperature material having two major faces, first and second ends, and two sides, one major face having a recess formed in and extending across said one major face, two sides of said recess having lips extending out from the sides of the recess forming two tracks in the sides of the recess such that a semiconductor wafer may be placed in the tracks in the recess and held therein when the carrier-susceptor is positioned with the recess and said one major face in a downward position, said carrier-susceptor also having circular grooves, one each groove extending across a respective one of said first and second ends, said grooves formed in said one major face and its respective end,; and wherein the tracks are open at two sides of the carrier-susceptor to allow loading of the semiconductor wafer into either side of the carrier-susceptor.
Claim 3
Dependent Claim
13 words
The carrier-susceptor according to claim 1, wherein the carrier-susceptor is made of graphite.
Claim 4
Dependent Claim
28 words
The carrier-susceptor according to claim 1, wherein the face of the carrier-susceptor opposite said one major face is used to distribute heat to the semiconductor wafer during processing.
Claim 5
Dependent Claim
39 words
The carrier-susceptor according to claim 1, wherein the semiconductor wafer to be mounted on the carrier-susceptor has a flat orientation edge and the mounting of the semiconductor in the carrier-susceptor is independent of the orientation of the semiconductor wafer.
Claim 6
Dependent Claim
14 words
The carrier-susceptor according to claim 1, wherein carrier-susceptor serves as carrier, cover and susceptor.
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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) | 1994-12-23 | 1995-06-24 | 1995-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-23 | 1999-06-24 | 1999-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-23 | 2003-06-24 | 2003-12-24 | $7700.00 | Window Closed / Lapsed |