US3569758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor photo-electric converting devices having depressions in the semiconductor substrate and image pickup tubes using same
Assignee: Toshiba Corp
•
Filing: 1969-04-15
•
Granted: 1971-03-09
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Expires: 1989-04-15
Abstract
Abstract A semiconductor target for use in a pickup tube includes a semiconductor substrate, on one side of which is formed arrays of a plurality of depressions and which has a corresponding number of PN junctions formed along the depressions.
Inventors
- 👤 Shigeharu Horiuchi
- 👤 Shigeo Tsuji
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:49
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: 11
Claim 1
Independent Claim
31 words
A photoelectric converting device according to claim 1 wherein that side of the substrate in which there are formed said depressions is covered with a protective film, except for said depressions.
Claim 2
Dependent Claim
22 words
A photoelectric converting device according to claim 1 wherein said PN junctions include portions parallel to the bottom plane of the depressions.
Claim 3
Dependent Claim
31 words
A photoelectric converting device according to claim 1 wherein the PN junctions include portions parallel to the bottom plane of the depressions and another portion parallel to the peripheral plane thereof.
Claim 4
Dependent Claim
19 words
A photoelectric converting device according to claim 1 wherein the PN junctions include two parallel units for each depression.
Claim 5
Dependent Claim
21 words
A photoelectric converting device according to claim 3 wherein the inner surfaces of the depressions are coated with a metal layer.
Claim 6
Dependent Claim
21 words
A photoelectric converting device according to claim 4 wherein the inner surfaces of the depressions are coated with a metal layer.
Claim 7
Dependent Claim
21 words
A photoelectric converting device according to claim 5 wherein the inner surfaces of the depressions are coated with a metal layer.
Claim 8
Dependent Claim
39 words
A photoelectric converting device according to claim 1 wherein there is formed a target electrode on the periphery of the opposite side of the substrate, and the remaining parts of said opposite side are coated with an antireflecting film.
Claim 9
Dependent Claim
27 words
A semiconductor photoelectric converting device according to claim 1 wherein said substrate has a recess on the other side thereof in the vicinity of said separate depressions.
Claim 10
Dependent Claim
132 words
An image pickup tube comprising a vacuum bulb, an electron gun assembly fitted to the inside of one end of the bulb; a face plate disposed at the other end of the bulb to face the electron gun assembly; a transparent conductive material deposited on the inside of the face plate; a photosensitive target mounted on the transparent conductive material positioned between the face plate and electron gun assembly; said target comprising a semiconductor substrate having two opposite sides, a large number of separate depressions formed on one of said two opposite sides of the substrate, and a large number of separate PN junctions formed in the separate depressions in said substrate and parallel at least to the bottom planes of said depressions, and being electrically connected to the transparent conductive material.
Claim 11
Dependent Claim
34 words
A semiconductor photoelectric converting device according to claim 1 wherein the distance between the PN junction and the one side of the substRate on which the depression is not formed is 8 Mu .
References Cited (Backward Citations)
US3460007A
Cited
US3458782A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-08 | 1974-09-07 | 1975-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-08 | 1978-09-07 | 1979-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-08 | 1982-09-07 | 1983-03-09 | $7700.00 | Window Closed / Lapsed |