Patent US5068794A successfully refreshed from Google Patents.
USRE29261E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gated silicon diode array camera tube
Assignee: Philips North America LLC
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Filing: 1976-04-09
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Granted: 1977-06-07
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Expires: 1996-04-09
Abstract
Abstract A silicon diode array camera tube employs a p-n junction to perform gating and provide electronic gain control.
Inventors
- 👤 Joze Kostelec
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:07
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/36; H01J29/39; H01J29/45; H01J29/451; H01J9/00; H01J9/20; H01J9/233; H10; H10D; H10D99/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
156 words
A device for converting light into an electrical signal comprising a semiconductive wafer having a light-receiving surface through which the light enters the wafer and produces photogenerated carriers in response to absorbed light, the wafer having adjacent one surface thereof remote from the light-receiving surface a first array of discrete rectifying barriers for collecting a flow of photo carriers in response to the absorbed light surrounded by regions free of rectifying barriers, insulating means coating said surface selectively at portions overlying regions free of rectifying barriers and leaving exposed portions overlying the rectifying barriers, and a second array of rectifying barriers interposed between those of said first array adjacent said surface and covered by said insulating means, and means to bias the rectifying barriers of said second array independently of said first array of rectifying barriers to direct at least a portion of the flow of photogenerated carriers from the first array to the second array.
Claim 2
Independent Claim
156 words
A device for converting light into an electrical signal comprising a semiconductive wafer having a light-receiving surface through which the light enters the wafer and produces photogenerated carriers in response to absorbed light, the wafer having adjacent one surface thereof remote from the light-receiving surface a first array of discrete rectifying barriers for collecting a flow of photo carriers in response to the absorbed light surrounded by regions free of rectifying barriers, insulating means coating said surface selectively at portions overlying regions free of rectifying barriers and leaving exposed portions overlying the rectifying barriers, and a second array of rectifying barriers interposed between those of said first array adjacent said surface and covered by said insulating means, and means to bias the rectifying barriers of said second array independently of said first array of rectifying barriers to direct at least a portion of the flow of photogenerated carriers from the first array to the second array.
Claim 3
Dependent Claim
14 words
A device as claimed in claim 1 in which the wafer consists of silicon.
Claim 4
Dependent Claim
15 words
A device as claimed in claim 2 in which the insulating material is silicon dioxide.
Claim 5
Dependent Claim
28 words
A device as claimed in claim 3 in which said insulating layer and said rectifying carriers of said first array are covered by a layer of resistive material.
Claim 6
Dependent Claim
20 words
A device as claimed in claim 4 in which the wafer consists of a substrate of uniformly doped n-type silicon.
Claim 7
Dependent Claim
29 words
A device as claimed in claim 5 in which the wafer is covered with a thin epitaxial layer of n-type silicon of lower resistivity than that of the wafer.
Claim 8
Dependent Claim
171 words
A device as claimed in claim 6 in which the epitaxial layer is doped with Sb or As. .Iadd. 8. A device for converting light into an electrical signal comprising a semiconductive wafer having a light-receiving surface through which the light enters the wafer and produces photogenerated carriers in response to absorbed light, the wafer having adjacent one surface thereof and array of photosensitive elements for collecting a flow of photo carriers in response to the absorbed light, at least one rectifying barrier being disposed in projection adjacent said photosensitive elements, and means for reverse biasing said rectifying barrier independently of said array of photosensitive elements so as to extend the associated depletion zone between said light receiving surface and said array of photosensitive elements to direct at least a portion of the flow of photogenerated carriers from said array of photosensitive elements to said rectifying barrier. .Iaddend..Iadd. 9. A device as claimed in claim 8 in which the photosensitive elements are adjacent the surface remote from the light-receiving surface. .Iaddend.
References Cited (Backward Citations)
US3703669A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-06 | 1980-12-06 | 1981-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-06 | 1984-12-06 | 1985-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-06 | 1988-12-06 | 1989-06-07 | $7700.00 | Window Closed / Lapsed |