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US4001099A
Expired / Lapsed
US
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Photosensitive camera tube target primarily of lead monoxide
Assignee: RCA Corp
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Filing: 1976-03-03
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Granted: 1977-01-04
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Expires: 1996-03-03
Abstract
Abstract A photosensitive layer comprising primarily lead monoxide is deposited on a signal electrode of a vidicon camera tube target. The deposition is carried out in an atmosphere containing oxygen and deuterium oxide. The vidicon target formed exhibits improved transient response leg properties and hole transport characteristics.
Inventors
- 👤 Chih Chun Wang
- 👤 Thomas Clifford Lausman
- 👤 Ronald Frank Bates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:27
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/36; H01J29/39; H01J29/45; H01J29/451; H01J29/456; C; C23; C23C; C23C14/00; C23C14/0021; H01J9/00; H01J9/20; H01J9/233
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
88 words
A method of manufacturing a photosensitive device comprising the step of vapor depositing in an atmosphere containing oxygen and vapors of deuterium oxide a layer comprising primarily lead monoxide on a support which is at a temperature between about 100° and about 120° C., the partial pressure of said deuterium oxide vapors being initially about 50 to about 80% of the sum of the partial pressures of oxygen and deuterium oxide, said sum being from about 5 × 10.sup. -3 to about 2 × 10 - 2 torr.
Claim 2
Independent Claim
88 words
A method of manufacturing a photosensitive device comprising the step of vapor depositing in an atmosphere containing oxygen and vapors of deuterium oxide a layer comprising primarily lead monoxide on a support which is at a temperature between about 100° and about 120° C., the partial pressure of said deuterium oxide vapors being initially about 50 to about 80% of the sum of the partial pressures of oxygen and deuterium oxide, said sum being from about 5 × 10.sup. -3 to about 2 × 10 - 2 torr.
Claim 3
Dependent Claim
52 words
The method of claim 1 additionally including the step of biasing selected areas of said layer negatively to effect an electrical discharge through an atmosphere containing oxygen at a pressure of from about 2 × 10.sup. -2 to about 8 × 10.sup. -2 torr to form oxygen ions which bombard said areas.
Claim 4
Dependent Claim
26 words
The method of claim 2 wherein a bias voltage is applied to said selected areas from approximately 900 to 1000 volts D.C. during said electrical discharge.
Claim 5
Dependent Claim
19 words
The method of claim 3, wherein the partial pressure of said deuterium oxide is about 75% of said sum.
Claim 6
Dependent Claim
25 words
The method of claim 4, wherein said sum of the partial pressures of oxygen and deuterium oxide is about 1.3 × 10 - 2 torr.
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) | 1980-01-04 | 1980-07-05 | 1981-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-04 | 1984-07-05 | 1985-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-04 | 1988-07-05 | 1989-01-04 | $7700.00 | Window Closed / Lapsed |