Patent US5015837A successfully refreshed from Google Patents.
US5015837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contact type image sensor with electric shielding
Assignee: Ricoh Research Institute of General Electronics Co Ltd
•
Filing: 1989-10-27
•
Granted: 1991-05-14
•
Expires: 2009-10-27
Abstract
Abstract A contact type image sensor includes a transparent base plate having a first surface and a second surface opposite to each other, a light receiving layer formed on the first surface of the transparent base plate, the light receiving layer generating an electric signal in response to light irradiated thereon, a driving circuit layer formed on the first surface of the transparent base plate, the driving circuit layer including a thin-film transistor for driving the light receiving member, and a conducting thin film formed on at least the second surface of the transparent base plate to thereby electrically shield the light receiving layer and the driving circuit layer.
Inventors
- 👤 Masaki Hiroi
- 👤 Masumitsu Ino
- 👤 Takehito Nagata
- 👤 Masumi Shimada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:37
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/024; H04N1/028; H04N1/03; H04N1/031; H10; H10F; H10F39/00; H10F39/10; H10F39/12; H10F39/18
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
110 words
A contact type image sensor comprising: a transparent base plate having a first surface and a second surface opposite to each other; a light receiving layer formed on said first surface of the transparent base plate, said light receiving layer generating an electric signal in response to light irradiated thereon; a driving circuit layer formed on said first surface of the transparent base plate, said driving circuit layer including a thin-film transistor for driving said light receiving layer; and a conducting thin film formed on said first surface and said second surface of the transparent base plate to thereby electrically shield said light receiving layer and said driving circuit layer.
Claim 2
Dependent Claim
110 words
A contact type image sensor comprising: a transparent base plate having a first surface and a second surface opposite to each other; a light receiving layer formed on said first surface of the transparent base plate, said light receiving layer generating an electric signal in response to light irradiated thereon; a driving circuit layer formed on said first surface of the transparent base plate, said driving circuit layer including a thin-film transistor for driving said light receiving layer; and a conducting thin film formed on said first surface and said second surface of the transparent base plate to thereby electrically shield said light receiving layer and said driving circuit layer.
Claim 3
Dependent Claim
46 words
A contact type image sensor as claimed in claim 1, further comprising a transparent insulating film formed so as to cover said transparent base plate, said light receiving layer and said driving circuit layer, wherein said conducting thin film is provided on said transparent insulating film.
Claim 4
Dependent Claim
24 words
A contact type image sensor as claimed in claim 2, wherein said conducting thin film has a window through which an incident light passes.
Claim 5
Dependent Claim
40 words
A contact type image sensor as claimed in claim 2, wherein said conducting thin film has a portion provided on a portion of said transparent insulating film formed on said driving circuit layer and which covers said driving circuit layer.
Claim 6
Dependent Claim
52 words
A contact type image sensor as claimed in claim 2, wherein said transparent base plate has side surfaces, and wherein said transparent insulating film has portions formed on said side surfaces, and said conducting thin film has portions formed on said portions of the transparent insulating film formed on said side surfaces.
Claim 7
Dependent Claim
17 words
A contact type image sensor as claimed in claim 1, wherein said conducting thin film is grounded.
Claim 8
Dependent Claim
19 words
A contact type image sensor as claimed in claim 1, wherein said conducting thin film comprises a metallic material.
Claim 9
Dependent Claim
28 words
A contact type image sensor as claimed in claim 1, wherein said conducting thin film comprises a semiconductor material having an impurity which gives said semiconductor material conductivity.
Claim 10
Dependent Claim
19 words
A contact type image sensor as claimed in claim 1, wherein said conducting thin film comprises a conductive rubber.
Claim 11
Dependent Claim
19 words
A contact type image sensor as claimed in claim 1, wherein said conducting thin film comprises a conductive resin.
Claim 12
Dependent Claim
27 words
A contact type image sensor as claimed in claim 1, wherein said conducting thin film is formed directly on said second surface of the transparent base plate.
Claim 13
Dependent Claim
36 words
A contact type image sensor as claimed in claim 1, wherein said transparent base plate has side surfaces, and wherein said conducting thin film has portions formed on said side surfaces of the transparent base plate.
Claim 14
Dependent Claim
41 words
A contact type image sensor as claimed in claim 1, further comprising a light interrupting member formed on a portion of said first surface of the transparent base plate, wherein said light receiving layer is formed on said light interrupting member.
Claim 15
Dependent Claim
24 words
A contact type image sensor as claimed in claim 13, wherein said light interrupting member has a window through which an incident light passes.
Claim 16
Dependent Claim
23 words
A contact type image sensor as claimed in claim 1, wherein said conducting thin film is approximately 5,000 to 20,000 angstroms in thickness.
Claim 17
Dependent Claim
27 words
A contact type image sensor as claimed in claim 1, wherein said conducting thin film has a volume conductivity equal to or less than 10 8 Ωcm.
Claim 18
Dependent Claim
20 words
A contact type image sensor as claimed in claim 1, further comprising a passivation film covering said conducting thin film.
Claim 19
Dependent Claim
25 words
A contact type image sensor as claimed in claim 17, wherein said passivation film has a hole through which said conducting thin film is grounded.
Claim 20
Dependent Claim
111 words
A contact type image sensor comprising: a conducting plate having a groove; and an assembly provided in said groove, said assembly including; a transparent base plate having a first surface and a second surface opposite to each other, a light receiving layer formed on said first surface of the transparent base plate, said light receiving layer generating an electric signal in response to light irradiated thereon, and a driving circuit layer formed on said first surface of the transparent base plate, said driving circuit layer including a thin-film transistor for driving said light receiving layer, said light receiving layer and said driving circuit layer being electrically shielded by said conducting plate.
Claim 21
Dependent Claim
111 words
A contact type image sensor comprising: a conducting plate having a groove; and an assembly provided in said groove, said assembly including; a transparent base plate having a first surface and a second surface opposite to each other, a light receiving layer formed on said first surface of the transparent base plate, said light receiving layer generating an electric signal in response to light irradiated thereon, and a driving circuit layer formed on said first surface of the transparent base plate, said driving circuit layer including a thin-film transistor for driving said light receiving layer, said light receiving layer and said driving circuit layer being electrically shielded by said conducting plate.
Claim 22
Dependent Claim
16 words
A contact type image sensor as claimed in claim 19, wherein said conducting plate is grounded.
References Cited (Backward Citations)
US4908718A
Cited
US4874957A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-05-13 | 1994-11-12 | 1995-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-13 | 1998-11-12 | 1999-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-13 | 2002-11-12 | 2003-05-14 | $7700.00 | Window Closed / Lapsed |