Patent US4090212A successfully refreshed from Google Patents.
US4090212A
Expired / Lapsed
US
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Imaging device
Assignee: BAE Systems Electronics Ltd
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Filing: 1977-03-24
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Granted: 1978-05-16
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Expires: 1997-03-24
Abstract
Abstract An imaging device which responds to incident thermal or acoustic signals, consists of a layer of electrically poled plastics material, such as polyvinyladene fluoride, on a semiconductor substrate. The plastics material enables an electric charge to be generated within the semiconductor, and the device is read by transferring the charges in `packets` to an output point.
Inventors
- 👤 Dennis William George Byatt
- 👤 Harold Thomas Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:52
CPC Classifications
H; H10; H10P; H10P14/00; H10P14/60; H10P14/68; H10P14/683; H10P14/687; H01; H01G; H01G7/00; H01G7/02; H01G7/021; H01G7/023; H10D; H10D48/00; H10D48/50; H10F; H10F39/00; H10F39/10; H10F39/12; H10F39/15; H10F39/157; H10P14/69; H10P14/692; H10P14/6921; H10P14/69215
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
42 words
An imaging device including a p-type or n-type semiconductor substrate having one major surface which carries a layer of insulating material which in turn is overlaid by a layer of electrically poled plastics material on which an array of electrodes is disposed.
Claim 2
Dependent Claim
42 words
An imaging device including a p-type or n-type semiconductor substrate having one major surface which carries a layer of insulating material which in turn is overlaid by a layer of electrically poled plastics material on which an array of electrodes is disposed.
Claim 3
Dependent Claim
43 words
A thermal imaging device including a p-type or n-type semiconductor substrate having one major surface which carries a layer of insulating material which in turn is overlaid by a layer of electrically poled plastics material on which an array of electrodes is disposed.
Claim 4
Dependent Claim
43 words
A thermal imaging device including a p-type or n-type semiconductor substrate having one major surface which carries a layer of insulating material which in turn is overlaid by a layer of electrically poled plastics material on which an array of electrodes is disposed.
Claim 5
Dependent Claim
27 words
A device as claimed in claim 1 in which the substrate is composed of p-type silicon which is provided with an insulating surface layer of silicon dioxide.
Claim 6
Dependent Claim
17 words
A device as claimed in claim 1, in which the electrically poled plastics material is polyvinyladene fluoride.
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) | 1981-05-15 | 1981-11-14 | 1982-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-15 | 1985-11-14 | 1986-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-15 | 1989-11-14 | 1990-05-16 | $7700.00 | Window Closed / Lapsed |