Patent US3636492A successfully refreshed from Google Patents.
US3636492A
Expired / Lapsed
US
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Sintered semiconductor film and method of manufacturing same
Assignee: Panasonic Holdings Corp
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Filing: 1968-08-05
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Granted: 1972-01-18
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Expires: 1988-08-05
Abstract
Abstract A method of manufacturing a sintered film composed of cadmium sulfide, cadmium selenide, etc. which is free from cracks and pinholes, and a semiconductor element having sandwich-type electrode structure comprised of the sintered film.
Inventors
- 👤 Toshio Yamashita
- 👤 Tadao Ohtani
- 👤 Manabu Yoshida
- 👤 Saburo Kitamura
- 👤 Hideaki Murakami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:07
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08; G03G5/087
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
24 words
Apparatus according to claim 1 wherein said rotary ring is made from a material selected from the group consisting of a metal and graphite.
Claim 2
Dependent Claim
16 words
Apparatus according to claim 1 in which the heating coil comprises an RF induction heating coil.
Claim 3
Dependent Claim
26 words
Apparatus according to claim 1 wherein said spraying means comprises a spray gun mounted above said rotary ring adjacent one end of said electrical heating coil.
Claim 4
Independent Claim
167 words
A method of continuously manufacturing sintered photoconductive semiconductor films free from pinholes comprising the steps of a. preparing a mixture including a halide fusing agent and at least one material selected from the group consisting of cadmium sulphide and cadmium selenide; b. rotating in a predetermined circle a plurality of substrates successively at a relatively low speed, each substrate being formed of glass having a transparent electroconductive layer; c. preheating each of said substrates being rotated at a temperature of about at least 100* C.; d. spraying said mixture onto the substrates maintained at said temperature to apply the mixture thereon while instantaneously evaporating water in the applied mixture; e. subsequently heating the substrates being continuously moved on said circle to a sintering temperature of the mixture substantially immediately after said spraying process for a period of time determined by said rotating speed of the substrates; and f. repeating the substrate rotation and preheating and the mixture application and the heating to sintering temperature at least twice.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |