US4845375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contact photoelectric conversion apparatus having plurality of protecting layers
Assignee: Ricoh Co Ltd
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Filing: 1987-11-19
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Granted: 1989-07-04
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Expires: 2007-11-19
Abstract
Abstract A photoelectric conversion apparatus comprises an insulating and transparent substrate, a plurality of photoelectric conversion elements formed on the substrate in a line, selection switches made up of thin film transistors formed on the substrate for selecting the photoelectric conversion elements, a driving circuit made up of thin film transistors formed on the substrate for driving the selection switches, and a wear-resistant and transparent protecting layer formed at least on the photoelectric conversion elements.
Inventors
- 👤 Shuichi Tsushima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:55
CPC Classifications
H; H10; H10F; H10F39/00; H10F39/10; H10F39/107; H04; H04N; H04N1/00; H04N1/024; H04N1/028; H04N1/03; H04N1/031; H10F39/80; H10F39/803
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
139 words
A contact photoelectric conversion apparatus comprising: an insulating and transparent substrate; a plurality of photoelectric conversion elements formed in a line on said insulating and transparent substrate; selection switches comprising a plurality of first thin film transistors formed on said insulating and transparent substrate for selecting said photoelectric conversion elements; a driving circuit comprising a plurality of second thin film transistors formed on said insulating and transparent substrate for driving said photoelectric conversion elements through said selection switches; and a wear-resistant and transparent protecting layer formed at least on said photoelectric conversion elements, said protecting layer including first transparent protecting layer formed on said photoelectric conversion elements, an adhesive layer formed on said first transparent protecting layer, a second transparent protecting layer formed on said adhesive layer, and a transparent wear-resistant layer formed on said second transparent protecting layer.
Claim 2
Dependent Claim
139 words
A contact photoelectric conversion apparatus comprising: an insulating and transparent substrate; a plurality of photoelectric conversion elements formed in a line on said insulating and transparent substrate; selection switches comprising a plurality of first thin film transistors formed on said insulating and transparent substrate for selecting said photoelectric conversion elements; a driving circuit comprising a plurality of second thin film transistors formed on said insulating and transparent substrate for driving said photoelectric conversion elements through said selection switches; and a wear-resistant and transparent protecting layer formed at least on said photoelectric conversion elements, said protecting layer including first transparent protecting layer formed on said photoelectric conversion elements, an adhesive layer formed on said first transparent protecting layer, a second transparent protecting layer formed on said adhesive layer, and a transparent wear-resistant layer formed on said second transparent protecting layer.
Claim 3
Dependent Claim
39 words
A contact photoelectric conversion apparatus as claimed in claim 1 in which a distance between said photoelectric conversion elements and said selection switches is 100 μm or over along a sub scanning direction of the contact photoelectric conversion apparatus.
Claim 4
Dependent Claim
29 words
A contact photoelectric conversion apparatus as claimed in claim 1 in which said wear-resistant and transparent protecting layer is formed on said photoelectric conversion elements and said selection switches.
Claim 5
Dependent Claim
29 words
A contact photoelectric conversion apparatus as claimed in claim 1 in which said second transparent protecting layer has a thickness in a range of 4 μm to 200 μm.
Claim 6
Dependent Claim
36 words
A contact photoelectric conversion apparatus as claimed in claim 1 in which a total thickness of said first transparent protecting layer through said transparent wear-resistant layer is in a range of 4 μm to 200 μm.
Claim 7
Dependent Claim
119 words
A contact photoelectric conversion apparatus comprising: an insulating and transparent substrate; a plurality of photoelectric conversion elements formed in a line on said insulating and transparent substrate; selection switches comprising a plurality of first thin film transistors formed on said insulating and transparent substrate for selecting said photoelectric conversion elements, a distance between said photoelectric conversion elements and said selection switches is 100 μm over along a sub scanning direction of the contact photoelectric conversion apparatus; a driving circuit comprising a plurality of second thin film transistors formed on said insulating and transparent substrate for driving said photoelectric conversion elements through said selection switches; and a wear-resistant and transparent protecting layer formed at least on said photoelectric conversion elements.
Claim 8
Dependent Claim
119 words
A contact photoelectric conversion apparatus comprising: an insulating and transparent substrate; a plurality of photoelectric conversion elements formed in a line on said insulating and transparent substrate; selection switches comprising a plurality of first thin film transistors formed on said insulating and transparent substrate for selecting said photoelectric conversion elements, a distance between said photoelectric conversion elements and said selection switches is 100 μm over along a sub scanning direction of the contact photoelectric conversion apparatus; a driving circuit comprising a plurality of second thin film transistors formed on said insulating and transparent substrate for driving said photoelectric conversion elements through said selection switches; and a wear-resistant and transparent protecting layer formed at least on said photoelectric conversion elements.
Claim 9
Dependent Claim
29 words
A contact photoelectric conversion apparatus as claimed in claim 6 in which said wear-resistant and transparent protecting layer is formed on said photoelectric conversion elements and said selection switches.
Claim 10
Dependent Claim
59 words
A contact photoelectric conversion apparatus as claimed in claim 6 in which said protecting layer comprises a first transparent protecting layer formed on said photoelectric conversion elements, an adhesive layer formed on said first transparent protecting layer, a second transparent protecting layer formed on said adhesive layer, and a transparent wear-resistant layer formed on said second transparent protecting layer.
Claim 11
Dependent Claim
29 words
A contact photoelectric conversion apparatus as claimed in claim 8 in which said second transparent protecting layer has a thickness in a range of 4 μm to 200 μm.
Claim 12
Dependent Claim
36 words
A contact photoelectric conversion apparatus as claimed in claim 8 in which a total thickness of said first transparent protecting layer through said transparent wear-resistant layer is in a range of 4 μm to 200 μm.
Claim 13
Dependent Claim
30 words
A contact photoelectric conversion apparatus as claimed in claim 6 in which said wear-resistant and transparent protecting layer has a thickness in a range of 4 μm to 200 μm.
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) | 1992-07-03 | 1993-01-02 | 1993-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-03 | 1997-01-02 | 1997-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-03 | 2001-01-02 | 2001-07-04 | $7700.00 | Window Closed / Lapsed |