Patent US3778657A successfully refreshed from Google Patents.
US3778657A
Expired / Lapsed
US
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Target having a mosaic made up of a plurality of p-n junction elements
Assignee: Panasonic Holdings Corp
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Filing: 1972-02-09
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Granted: 1973-12-11
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Expires: 1992-02-09
Abstract
Abstract An image pick-up device has a target arranged to be scanned by an electron beam in a scanning direction and comprising a semiconductor of P- or N- type substrate, and a plurarity of semiconductive regions of N- or P-type on the substrate and forming P-N junction elements spaced from and isolated from each other, which elements are so arranged that at least one axis defined by a line connecting the centres of successive most closely adjacent elements is oblique relative to the scanning direction.
Inventors
- 👤 S Kubo
- 👤 H Naito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:52
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: 3
Claim 1
Independent Claim
93 words
An image pick-up tube comprising: a. an evacuated envelope; b. an electron gun at one end thereof for emitting an electron beam; and c. a target assembly at the other end thereof adapted to be scanned by said electron beam in a given direction, comprising: a semiconductor substrate element of one of P- and N- type conductivity, a plurality of semiconductive regions of opposite polarity arranged thereon, each of said regions being arranged in equilateral-triangle relation with any adjacent two regions and arranged in directions being skewed with respect to said given direction.
Claim 2
Dependent Claim
93 words
An image pick-up tube comprising: a. an evacuated envelope; b. an electron gun at one end thereof for emitting an electron beam; and c. a target assembly at the other end thereof adapted to be scanned by said electron beam in a given direction, comprising: a semiconductor substrate element of one of P- and N- type conductivity, a plurality of semiconductive regions of opposite polarity arranged thereon, each of said regions being arranged in equilateral-triangle relation with any adjacent two regions and arranged in directions being skewed with respect to said given direction.
Claim 3
Dependent Claim
26 words
An image pick-up tube according to claim 1, wherein each of said semiconductive regions is provided with a metal foil electrode having a hexagon-shaped outer surface.
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) | 1976-12-10 | 1977-06-11 | 1977-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-10 | 1981-06-11 | 1981-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-10 | 1985-06-11 | 1985-12-11 | $7700.00 | Window Closed / Lapsed |