Patent US4558660A successfully refreshed from Google Patents.
US4558660A
Expired / Lapsed
US
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Semiconductor fabricating apparatus
Assignee: HANDOTAI KENKYU SHINKOKAI KAWAUCHI SENDAI-SHI MIYAGI JAPAN
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Filing: 1983-03-16
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Granted: 1985-12-17
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Expires: 2003-03-16
Abstract
Abstract A semiconductor fabricating apparatus is capable of fabricating a high quality semiconductor with utilization of crystal growth, thermal oxidation of CVD membrane growth at low temperature. The semiconductor fabricating apparatus includes a reaction chamber having a gas inlet and a gas outlet, an insulative support means disposed in the reaction chamber for supporting semiconductor wafers thereon, an infrared lamp means for irradiating exposed surfaces of the semiconductor wafers and an ultra-violet lamp means for irradiating the exposed surfaces of the semiconductor wafers overlappingly with the infrared irradiation.
Inventors
- 👤 Jun-ichi Nishizawa
- 👤 Tadahiro Ohmi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:00
CPC Classifications
H; H10; H10P; H10P72/00; H10P72/04; H10P72/0431; H10P72/0436; C; C30; C30B; C30B25/00; C30B25/02; C30B25/10; C30B25/105; C30B33/00; C30B33/005; H10P34/00; H10P34/40; H10P34/42; H10P34/422
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
95 words
A semiconductor fabricating apparatus comprising a reaction chamber having a gas inlet and a gas outlet, a support means disposed in said reaction chamber for supporting semiconductor wafers thereon, an infrared lamp means for irradiating exposed surfaces of said semiconductor wafers and an ultra-violet lamp means for irradiating said exposed surfaces of said semiconductor wafers overlappingly with said infrared irradiation, further comprising a vacuum means connected to said reaction chamber for evacuating an interior of said reaction chamber to maintain an inner pressure thereof at a super low pressure prior to a commencement of reaction.
Claim 2
Dependent Claim
95 words
A semiconductor fabricating apparatus comprising a reaction chamber having a gas inlet and a gas outlet, a support means disposed in said reaction chamber for supporting semiconductor wafers thereon, an infrared lamp means for irradiating exposed surfaces of said semiconductor wafers and an ultra-violet lamp means for irradiating said exposed surfaces of said semiconductor wafers overlappingly with said infrared irradiation, further comprising a vacuum means connected to said reaction chamber for evacuating an interior of said reaction chamber to maintain an inner pressure thereof at a super low pressure prior to a commencement of reaction.
Claim 3
Dependent Claim
47 words
The semiconductor fabricating apparatus as claimed in claim 1, wherein said infrared lamp means and said ultraviolet lamp means are disposed with respect to said semiconductor wafers so that the irradiations of said exposed surfaces of said semiconductor wafers with infrared rays and ultra-violet rays occur simultaneously.
Claim 4
Dependent Claim
41 words
The semiconductor fabricating apparatus as claimed in claim 1, wherein said infrared lamp means and said ultra-violet lamp means are constituted as a unit so that said surfaces of said semiconductor wafers are irradiated uniformly with infrared rays and ultra-violet rays.
Claim 5
Dependent Claim
54 words
The semiconductor fabricating apparatus as claimed in claim 1 wherein said ultra-violet lamp means and said infrared lamp means are constituted as a unit and are positioned above said wafers as a first source of illumination, said apparatus further comprising additional infrared lamp means positioned below said wafers as a second source of illumination.
References Cited (Backward Citations)
US2820131A
Cited
US4342794A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-12-16 | 1989-06-17 | 1989-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-16 | 1993-06-17 | 1993-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-16 | 1997-06-17 | 1997-12-17 | $7700.00 | Window Closed / Lapsed |