Patent US4827117A successfully refreshed from Google Patents.
US4827117A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amorphous silicon photo sensor with blocking diode
Assignee: NEC Corp
•
Filing: 1988-04-13
•
Granted: 1989-05-02
•
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 07:12
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)
US4405857A
Cited
US4499384A
Cited
US4565928A
Cited
US4556800A
Cited
US4542409A
Cited
US4584607A
Cited
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 |