Patent US3609399A successfully refreshed from Google Patents.
US3609399A
Expired / Lapsed
US
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Tricolor image photodiode pickup array
Assignee: NEC Corp
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Filing: 1970-01-26
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Granted: 1971-09-28
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Expires: 1990-01-26
Abstract
Abstract An improved target device for a tricolor image pickup device comprises a photodiode-array formed on one surface of a substrate. A transparent insulator layer is formed on the other surface of the substrate and a plurality of transparent electrodes on which filters are mounted, are mounted on the insulator layer at locations corresponding to the photodiodearray.
Inventors
- 👤 Masafumi Hanaoka
- 👤 Yasuo Minowa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:34
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/36; H01J29/39; H01J29/45; H01J29/451; H01J29/453; H01J29/455; H10; H10D; H10D99/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
118 words
A diode-array target device for a tricolor image pickup device comprising a semiconductor substrate of one conductivity type, an array of diffusion regions of opposite conductivity type formed on one major surface of said substrate, a transparent film of insulative material formed on the other major surface of said substrate, a plurality of strip-shaped transparent electrodes formed in parallel on said insulator film in alignment with said array, a plurality of filter means respectively covering said transparent electrodes for respectively detecting red, green and blue color components, means for connecting said electrodes into three groups each composed of selected ones of said electrodes and separated by a predetermined spacing, and output means in ohmic contact with said substrate.
Claim 2
Dependent Claim
118 words
A diode-array target device for a tricolor image pickup device comprising a semiconductor substrate of one conductivity type, an array of diffusion regions of opposite conductivity type formed on one major surface of said substrate, a transparent film of insulative material formed on the other major surface of said substrate, a plurality of strip-shaped transparent electrodes formed in parallel on said insulator film in alignment with said array, a plurality of filter means respectively covering said transparent electrodes for respectively detecting red, green and blue color components, means for connecting said electrodes into three groups each composed of selected ones of said electrodes and separated by a predetermined spacing, and output means in ohmic contact with said substrate.
Claim 3
Dependent Claim
21 words
The target device of claim 1, further comprising means for varying the electric field intensity beneath said electrodes between said groups.
Claim 4
Dependent Claim
32 words
The target device of claim 2, in which said insulative film is of varying thicknesses at the locations of different ones of said groups of electrodes, thereby defining said field varying means.
Claim 5
Dependent Claim
24 words
The target device of claim 3, in which said blue and green groups of electrodes are at least partially embedded in said insulative fiLm.
Claim 6
Dependent Claim
33 words
The target device of claim 3, in which a concentration gradient of impurities of said one conductivity type in said substrate is provided at locations in registration with said group of blue electrodes.
Claim 7
Dependent Claim
33 words
The target device in claim 4, in which a concentration gradient of impurities of said one conductivity type in said substrate is provided at locations in registration with said group of blue electrodes.
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) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |