US4607168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensor array devices
Assignee: Hitachi Ltd
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Filing: 1983-07-06
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Granted: 1986-08-19
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Expires: 2003-07-06
Abstract
Abstract A photosensor array device comprises a line sensor including a plurality of sets of sensors juxtaposed on a transparent glass substrate. Each set comprises an amorphous silicon photodiode, a crosstalk preventing element in the form of a diode or a transistor and a matrix wiring connected to the element. A selector is provided for driving the crosstalk preventing elements of the line sensor. The photodiode and the crosstalk preventing element are formed integrally.
Inventors
- 👤 Ryoji Oritsuki
- 👤 Susumu Saito
- 👤 Hiromi Kanai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:45
CPC Classifications
H; H10; H10F; H10F39/00; H10F39/10; H10F39/12; H10F39/18; H10F39/191
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
86 words
A photosensor array device comprising: an insulating substrate; a plurality of photo-diodes formed on said substrates; and a plurality of insulated-gate thin film field-effect transistors formed on said insulating substrate, and each coupled to a respective one of said photo-diodes so that the conduction path between the source and drain path of each of said transistors is coupled in series with its respective photo-diodes; said photo-diode and said transistors including a plurality of amorphous silicon islands each island being common to a coupled photo-diode transistor pair.
Claim 2
Dependent Claim
86 words
A photosensor array device comprising: an insulating substrate; a plurality of photo-diodes formed on said substrates; and a plurality of insulated-gate thin film field-effect transistors formed on said insulating substrate, and each coupled to a respective one of said photo-diodes so that the conduction path between the source and drain path of each of said transistors is coupled in series with its respective photo-diodes; said photo-diode and said transistors including a plurality of amorphous silicon islands each island being common to a coupled photo-diode transistor pair.
Claim 3
Dependent Claim
94 words
A photosensor array device comprising: an insulating substrate; a plurality of photo-diodes formed on said substrate; and a plurality of thin film transistors one for each of said photo-diodes formed on said insulating substrate with connections respectively for selecting said photo-diodes; each of said photo-diode being comprised of an amorphous silicon film; each of said transistors comprising a source electrode, a drain electrode, an amorphous silicon film and a gate electrode for controlling electrical conductance of said film between said source and drain electrodes, said amorphous silicon film being integral for each photo-diode-transistor pair.
Claim 4
Dependent Claim
94 words
A photosensor array device comprising: an insulating substrate; a plurality of photo-diodes formed on said substrate; and a plurality of thin film transistors one for each of said photo-diodes formed on said insulating substrate with connections respectively for selecting said photo-diodes; each of said photo-diode being comprised of an amorphous silicon film; each of said transistors comprising a source electrode, a drain electrode, an amorphous silicon film and a gate electrode for controlling electrical conductance of said film between said source and drain electrodes, said amorphous silicon film being integral for each photo-diode-transistor pair.
Claim 5
Dependent Claim
30 words
The photosensor array according to claim 2, wherein said amorphous silicon film of each of said photo-diodes and each of said transistors are simultaneously formed in the same manufacturing step.
Claim 6
Dependent Claim
34 words
The photosensor array according to claim 1 or claim 2 wherein an electrode of each of said photo-diodes and an electrode of each of said transistors are simultaneously formed in the same manufacturing step.
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) | 1989-08-18 | 1990-02-17 | 1990-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-18 | 1994-02-17 | 1994-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-18 | 1998-02-17 | 1998-08-19 | $7700.00 | Window Closed / Lapsed |