US3962778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photodetector array and method of manufacturing same
Assignee: General Dynamics Corp
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Filing: 1975-01-24
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Granted: 1976-06-15
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Expires: 1995-01-24
Abstract
Abstract Disclosed is a thin film photodetector array of resistance-variable light detectors and a method for manufacturing such an array. Electronic read-out circuitry is normally associated therewith.
Inventors
- 👤 John P. Palmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:09
CPC Classifications
H; H10; H10F; H10F30/00; H10F30/10; G; G01; G01B; G01B11/00; H10W; H10W90/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
96 words
A method of manufacturing a photoconductive array cell comprising the steps of: depositing a thin film of photosensitizable semiconductor material on an insulative material substrate; diffusing an impurity into a defined portion of said photosensitizable thin film to photosensitize said defined region; depositing thin film metal electrode pads on said photosensitizable thin film around the photosensitized portion of said photosensitizable thin film, with said photosensitized portion being noncontiguous with said electrode pads defining only a small portion of the area between said electrode pads; and bonding a metal wire lead to each of said electrode pads.
Claim 2
Independent Claim
96 words
A method of manufacturing a photoconductive array cell comprising the steps of: depositing a thin film of photosensitizable semiconductor material on an insulative material substrate; diffusing an impurity into a defined portion of said photosensitizable thin film to photosensitize said defined region; depositing thin film metal electrode pads on said photosensitizable thin film around the photosensitized portion of said photosensitizable thin film, with said photosensitized portion being noncontiguous with said electrode pads defining only a small portion of the area between said electrode pads; and bonding a metal wire lead to each of said electrode pads.
Claim 3
Dependent Claim
16 words
The method of claim 1 wherein said thin film of photosensitizable semiconductor material is cadmium sulfide.
Claim 4
Dependent Claim
10 words
The method of claim 1 wherein said impurity is copper.
Claim 5
Dependent Claim
13 words
The method of claim 1 wherein said insulative material substrate is plate glass.
Claim 6
Dependent Claim
24 words
The method of claim 1 wherein the defined portion of said thin film that is photosensitized is a narrow band between said electrode pads.
Claim 7
Independent Claim
81 words
A method of manufacturing a photoconductive array comprising the steps of: depositing a thin film of photosensitizable semiconductor material on an insulative material substrate; depositing a pair of spaced-apart electrode pads on said photosensitizable thin film; diffusing an impurity into a small portion of said photosensitizable thin film between said pair of spaced-apart electrode pads to photosensitize said small portion, said photosensitized portion being spaced apart from said electrodes; and bonding a metal wire lead to each of said electrode pads.
Claim 8
Independent Claim
81 words
A method of manufacturing a photoconductive array comprising the steps of: depositing a thin film of photosensitizable semiconductor material on an insulative material substrate; depositing a pair of spaced-apart electrode pads on said photosensitizable thin film; diffusing an impurity into a small portion of said photosensitizable thin film between said pair of spaced-apart electrode pads to photosensitize said small portion, said photosensitized portion being spaced apart from said electrodes; and bonding a metal wire lead to each of said electrode pads.
Claim 9
Independent Claim
91 words
A method of manufacturing a photoconductive array comprising the steps of: depositing a thin film of photosensitizable material on an insulative material substrate; diffusing an impurity into a plurality of substantially parallel narrow bands of said thin film to photosensitize said narrow bands; depositing on said thin film a plurality of electrode pads, said electrode pads disposed substantially parallel to said photosensitized narrow bands with one electrode pad disposed on either side of each band and spaced apart therefrom; and bonding a metal wire lead to each of said electrode pads.
Claim 10
Independent Claim
91 words
A method of manufacturing a photoconductive array comprising the steps of: depositing a thin film of photosensitizable material on an insulative material substrate; diffusing an impurity into a plurality of substantially parallel narrow bands of said thin film to photosensitize said narrow bands; depositing on said thin film a plurality of electrode pads, said electrode pads disposed substantially parallel to said photosensitized narrow bands with one electrode pad disposed on either side of each band and spaced apart therefrom; and bonding a metal wire lead to each of said electrode pads.
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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) | 1979-06-15 | 1979-12-15 | 1980-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-15 | 1983-12-15 | 1984-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-15 | 1987-12-15 | 1988-06-15 | $7700.00 | Window Closed / Lapsed |