US4827117A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amorphous silicon photo sensor with blocking diode
Assignee: NEC Corp
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Filing: 1988-04-13
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Granted: 1989-05-02
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Expires: 2008-04-13
Abstract
Abstract An image sensor array comprises an insulating substrate, a plurality of individual electrodes formed on the substrate, a plurality of blocking diodes formed on the respective individual electrodes, a plurality of photo diodes formed on the blocking diodes to form a plurality of series conections of a blocking diode and a photo diode, a plural number of common electrodes of a transparent conductor material, each of the common electrodes covering one of the photo diodes on the same individual electrodes, and a filter covering portions of the common electrodes above the photo diodes. A photo-shielding layer of metal, amorphous silicon, amorphous germanium or amorphous silicon germanium may be interposed between the blocking diode and the photo diode.
Inventors
- 👤 Hiroyuki Uchida
- 👤 Setsuo Kaneko
- 👤 Toshio Okubo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:56
CPC Classifications
H; H10; H10F; H10F39/00; H10F39/10; H10F39/12; H10F39/18; H10F39/182; H10F39/80; H10F39/805; H10F39/8053; H10F39/8057
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
60 words
A photo sensor comprising: a first wiring layer; a blocking diode formed on said first wiring layer and primarily consisting of amorphous silicon; a photo-shield layer formed on said blocking diode; a photo diode formed on said photo-shield layer and primarily consisting of amorphous silicon; and a second wiring layer of a transparent conductive material formed on said photo diode.
Claim 2
Dependent Claim
60 words
A photo sensor comprising: a first wiring layer; a blocking diode formed on said first wiring layer and primarily consisting of amorphous silicon; a photo-shield layer formed on said blocking diode; a photo diode formed on said photo-shield layer and primarily consisting of amorphous silicon; and a second wiring layer of a transparent conductive material formed on said photo diode.
Claim 3
Dependent Claim
31 words
A photo sensor as claimed in claim 1, wherein said photo-shield layer is made of a material selected from the group consisting of molybdenum, aluminum, nickel, chromium, platinum and conductive carbon.
Claim 4
Dependent Claim
32 words
A photo sensor as claimed in claim 1, wherein said photo-shield layer is a photo absorber made of a material selected from the group consisting of amorphous germanium and amorphous silicon germanium.
Claim 5
Dependent Claim
48 words
A photo sensor comprising: a first wiring layer; a blocking diode formed on said first wiring layer; a photo-shield layer formed on said blocking diode; a photo diode formed on said photo-shield layer; and a second wiring layer of a transparent conductive material formed on said photo diode.
Claim 6
Dependent Claim
48 words
A photo sensor comprising: a first wiring layer; a blocking diode formed on said first wiring layer; a photo-shield layer formed on said blocking diode; a photo diode formed on said photo-shield layer; and a second wiring layer of a transparent conductive material formed on said photo diode.
Claim 7
Dependent Claim
21 words
A photo sensor as claimed in claim 4, wherein said blocking diodes and said photo diodes are made of amorphous silicon.
Claim 8
Dependent Claim
31 words
A photo sensor as claimed in claim 5, wherein said photo-shield layer is made of a material selected from the group consisting of molybdenum, aluminum, nickel, chromium, platinum and conductive carbon.
Claim 9
Dependent Claim
32 words
A photo sensor as claimed in claim 5, wherein said photo-shield layer is a photo absorber made of a material selected from the group consisting of amorphous germanium and amorphous silicon germanium.
References Cited (Backward Citations)
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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) | 1992-05-01 | 1992-10-31 | 1993-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-01 | 1996-10-31 | 1997-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-01 | 2000-10-31 | 2001-05-02 | $7700.00 | Window Closed / Lapsed |