Patent US4289822A successfully refreshed from Google Patents.
US4289822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-sensitive film
Assignee: Hitachi Ltd
•
Filing: 1979-06-15
•
Granted: 1981-09-15
•
Expires: 1999-06-15
Abstract
Abstract A photoconductive material comprising an amorphous substance whose indispensable constituent elements are silicon, carbon and hydrogen is disclosed. The photoconductive material preferably has a structure expressed by [Si1-xCx]1-y[H]y where 0.02</=x</=0.3 and 0.02</=y</=0.3. Up to 40% of the carbon can be substituted by germanium. The peak of response can be established for light of any desired wavelength between approximately 5,600 A-4,500 A. This photoconductive material is particularly useful when applied to a light-sensitive film which is operated in the storage mode. The light-sensitive film includes the photoconductive material in a region in which pairs of free electrons and positive holes are created upon incidence of light.
Inventors
- 👤 Toshikazu Shimada
- 👤 Yoshifumi Katayama
- 👤 Kiichi F. Komatsubara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:32
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08; G03G5/082; G03G5/08214; G03G5/08235; G03G5/043; G03G5/0433; G03G5/08242; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/31504
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
67 words
An article comprising a light-sensitive film constructed of at least a single layer of at least one photoconductive material on a substrate, wherein at least one layer of said at least a single layer is made of an amorphous photoconductive material whose composition is expressed by a formula [Si 1-x C x ] 1-y [H] y where 0≦x≦0.3 and 0.02≦y≦0.3, whereby said light-sensitive film exhibits photoconductive characteristics.
Claim 2
Dependent Claim
67 words
An article comprising a light-sensitive film constructed of at least a single layer of at least one photoconductive material on a substrate, wherein at least one layer of said at least a single layer is made of an amorphous photoconductive material whose composition is expressed by a formula [Si 1-x C x ] 1-y [H] y where 0≦x≦0.3 and 0.02≦y≦0.3, whereby said light-sensitive film exhibits photoconductive characteristics.
Claim 3
Dependent Claim
10 words
An article according to claim 1, wherein 0.02≦x≦0.3 and 0.02≦y≦0.3.
Claim 4
Dependent Claim
20 words
An article according to claim 1, wherein said amorphous material has a dark resistivity of at least 10 10 Ω·cm.
Claim 5
Dependent Claim
20 words
An article according to claim 2, wherein said amorphous material has a dark resistivity of at least 10 10 Ω·cm.
Claim 6
Dependent Claim
26 words
An article according to claim 1, wherein the at least one layer which is made of the amorphous photoconductive material is at least 100 nm thick.
Claim 7
Dependent Claim
44 words
An article according to claim 5, wherein said substrate comprises a faceplate having thereon a light-transmitting conducting layer, with at least one photoconductive layer positioned on said light-transmitting conducting layer, and with the amorphous photoconductive material layer adjacent said at least one photoconductive layer.
Claim 8
Dependent Claim
29 words
An article according to claim 1 or claim 5, wherein said amorphous photoconductive material has at least one impurity element incorporated therein for providing a desired conductivity type material.
Claim 9
Dependent Claim
97 words
An article comprising a light-sensitive film constructed of at least a single layer of at least one photoconductive material on a substrate, wherein at least one layer of said at least a single layer is made of an amorphous photoconductive material whose composition is expressed by a formula [Si 1-x C x ] 1-y [H] y where 0≦x≦0.3 and 0.02≦y≦0.3, whereby said light sensitive film exhibits photoconductive characteristics and wherein an n-type oxide layer is positioned between said light-sensitive film and said substrate, whereby injection of positive holes from the substrate into the light-sensitive film is prevented.
Claim 10
Dependent Claim
97 words
An article comprising a light-sensitive film constructed of at least a single layer of at least one photoconductive material on a substrate, wherein at least one layer of said at least a single layer is made of an amorphous photoconductive material whose composition is expressed by a formula [Si 1-x C x ] 1-y [H] y where 0≦x≦0.3 and 0.02≦y≦0.3, whereby said light sensitive film exhibits photoconductive characteristics and wherein an n-type oxide layer is positioned between said light-sensitive film and said substrate, whereby injection of positive holes from the substrate into the light-sensitive film is prevented.
Claim 11
Dependent Claim
103 words
An article comprising a light-sensitive film constructed of at least a single layer of at least one photoconductive material on a substrate, wherein at least one layer of said at least a single layer is made of an amorphous photoconductive material whose composition is expressed by a formula [Si 1-x C x ] 1-y [H] y where 0<x≦0.3 and 0.02≦y≦0.3, and is at least 100 nm thick, whereby said light-sensitive film exhibits photoconductive characteristics and wherein an n-type oxide layer is positioned between said light-sensitive film and said substrate, whereby injection of positive holes from the substrate into the light-sensitive film is prevented.
Claim 12
Dependent Claim
103 words
An article comprising a light-sensitive film constructed of at least a single layer of at least one photoconductive material on a substrate, wherein at least one layer of said at least a single layer is made of an amorphous photoconductive material whose composition is expressed by a formula [Si 1-x C x ] 1-y [H] y where 0<x≦0.3 and 0.02≦y≦0.3, and is at least 100 nm thick, whereby said light-sensitive film exhibits photoconductive characteristics and wherein an n-type oxide layer is positioned between said light-sensitive film and said substrate, whereby injection of positive holes from the substrate into the light-sensitive film is prevented.
Claim 13
Dependent Claim
141 words
An article comprising a light-sensitive film constructed of at least a single layer of at least one photoconductive material on a substrate, wherein at least one layer of said at least a single layer is made of an amorphous photoconductive material whose composition is expressed by a formula [Si 1-x C x ] 1-y [H] y where 0<x≦0.3 and 0.02≦y≦0.3, and is at least 100 nm thick, whereby said light-sensitive film exhibits photoconductive characteristics, wherein said substrate comprises a faceplate having thereon a light-transmitting conducting layer, with at least one photoconductive layer positioned on said light-transmitting conducting layer, and with the amorphous photoconductive material layer adjacent said at least one photoconductive layer, and wherein an n-type oxide layer is positioned between said light-sensitive film and said substrate, whereby injection of positive holes from the substrate into the light-sensitive film is prevented.
Claim 14
Dependent Claim
141 words
An article comprising a light-sensitive film constructed of at least a single layer of at least one photoconductive material on a substrate, wherein at least one layer of said at least a single layer is made of an amorphous photoconductive material whose composition is expressed by a formula [Si 1-x C x ] 1-y [H] y where 0<x≦0.3 and 0.02≦y≦0.3, and is at least 100 nm thick, whereby said light-sensitive film exhibits photoconductive characteristics, wherein said substrate comprises a faceplate having thereon a light-transmitting conducting layer, with at least one photoconductive layer positioned on said light-transmitting conducting layer, and with the amorphous photoconductive material layer adjacent said at least one photoconductive layer, and wherein an n-type oxide layer is positioned between said light-sensitive film and said substrate, whereby injection of positive holes from the substrate into the light-sensitive film is prevented.
Claim 15
Dependent Claim
36 words
An article according to claim 8, 9 or 10, wherein the n-type oxide layer is made of a material selected from the group consisting of cerium oxide, tungsten oxide, niobium oxide, germanium oxide and molybdenum oxide.
Claim 16
Dependent Claim
20 words
An article according to claim 11, whereby said n-type oxide layer has a thickness of 5 nm to 100 nm.
Claim 17
Dependent Claim
82 words
An article comprising a light-sensitive film constructed of at least a single layer of at least one photoconductive material on a substrate, wherein at least one layer of said at least a single layer is made of an amorphous photoconductive material whose composition is expressed by a formula [Si 1-x C x ] 1-y [H] y where 0<x≦0.3 and 0.02≦y≦0.3, whereby said light-sensitive film exhibits photoconductive characteristics and wherein a layer of antimony trisulfide is positioned on top of the light-sensitive film.
Claim 18
Dependent Claim
82 words
An article comprising a light-sensitive film constructed of at least a single layer of at least one photoconductive material on a substrate, wherein at least one layer of said at least a single layer is made of an amorphous photoconductive material whose composition is expressed by a formula [Si 1-x C x ] 1-y [H] y where 0<x≦0.3 and 0.02≦y≦0.3, whereby said light-sensitive film exhibits photoconductive characteristics and wherein a layer of antimony trisulfide is positioned on top of the light-sensitive film.
Claim 19
Dependent Claim
89 words
An article comprising a light-sensitive film constructed of at least a single layer of at least one photoconductive material on a substrate, wherein at least one layer of said at least a single layer is made of an amorphous photoconductive material whose composition is expressed by a formula [Si 1- C x ] 1-y [H] y where 0<x≦0.3 and 0.02≦y≦0.3, whereby said light-sensitive film exhibits photoconductive characteristics and wherein a layer of antimony trisulfide is positioned on top of the light-sensitive film and is at least 100 nm thick.
Claim 20
Dependent Claim
89 words
An article comprising a light-sensitive film constructed of at least a single layer of at least one photoconductive material on a substrate, wherein at least one layer of said at least a single layer is made of an amorphous photoconductive material whose composition is expressed by a formula [Si 1- C x ] 1-y [H] y where 0<x≦0.3 and 0.02≦y≦0.3, whereby said light-sensitive film exhibits photoconductive characteristics and wherein a layer of antimony trisulfide is positioned on top of the light-sensitive film and is at least 100 nm thick.
Claim 21
Dependent Claim
127 words
An article comprising a light-sensitive film constructed of at least a single layer of at least one photoconductive material on a substrate, wherein at least one layer of said at least a single layer is made of an amorphous photoconductive material whose composition is expressed by a formula [Si 1-x C x ] 1-y [H] y where 0<x≦0.3 and 0.02≦Y≦0.3, whereby said light-sensitive film exhibits photoconductive characteristics wherein said substrate comprises a faceplate having thereon a light-transmitting conducting layer, with at least one photoconductive layer positioned on said light-transmitting conducting layer, and with the amorphous photoconductive material layer adjacent said at least one photoconductive layer, and wherein a layer of antimony trisulfide is positioned on top of the light-sensitive film and is at least 100 nm thick.
Claim 22
Dependent Claim
127 words
An article comprising a light-sensitive film constructed of at least a single layer of at least one photoconductive material on a substrate, wherein at least one layer of said at least a single layer is made of an amorphous photoconductive material whose composition is expressed by a formula [Si 1-x C x ] 1-y [H] y where 0<x≦0.3 and 0.02≦Y≦0.3, whereby said light-sensitive film exhibits photoconductive characteristics wherein said substrate comprises a faceplate having thereon a light-transmitting conducting layer, with at least one photoconductive layer positioned on said light-transmitting conducting layer, and with the amorphous photoconductive material layer adjacent said at least one photoconductive layer, and wherein a layer of antimony trisulfide is positioned on top of the light-sensitive film and is at least 100 nm thick.
Claim 23
Dependent Claim
23 words
An article according to claim 13, 14 or 15 wherein the antimony trisulfide layer has a thickness of 10 nm to 1 μm.
Claim 24
Dependent Claim
23 words
An article according to claim 8, 9 or 10 wherein a layer of antimony trisulfide is positioned on top of the light-sensitive film.
Claim 25
Dependent Claim
20 words
An article according to claim 17, wherein the antimony trisulfide layer has a thickness of 10 nm to 1 μm.
Claim 26
Dependent Claim
147 words
An article comprising a light-sensitive film constructed of at least a single layer of at least one photoconductive material on a substrate, wherein at least one layer of said at least a single layer is made of an amorphous photoconductive material whose composition is expressed by a formula [Si 1-x C x ] 1-y [H] y where 0<x≦0.3 and 0.02≦y≦0.3, whereby said light-sensitive film exhibits photoconductive characteristics and wherein the at least one layer of the amorphous photoconductor material has a continuously varying composition with x varying from a high value of x 0.3 to a lower value less than said high value but greater than 0, from one surface to the opposite surface of said at least one layer of the amorphous photoconductive material, with a layer of (si) 1-y (H) y adjacent the surface of the amorphous photoconductive material having the lower value of x.
Claim 27
Dependent Claim
147 words
An article comprising a light-sensitive film constructed of at least a single layer of at least one photoconductive material on a substrate, wherein at least one layer of said at least a single layer is made of an amorphous photoconductive material whose composition is expressed by a formula [Si 1-x C x ] 1-y [H] y where 0<x≦0.3 and 0.02≦y≦0.3, whereby said light-sensitive film exhibits photoconductive characteristics and wherein the at least one layer of the amorphous photoconductor material has a continuously varying composition with x varying from a high value of x 0.3 to a lower value less than said high value but greater than 0, from one surface to the opposite surface of said at least one layer of the amorphous photoconductive material, with a layer of (si) 1-y (H) y adjacent the surface of the amorphous photoconductive material having the lower value of x.
Claim 28
Dependent Claim
30 words
An article according to claim 19, wherein the surface of the at least one layer of the amorphous photoconductive material where x has said high value is adjacent said substrate.
Claim 29
Dependent Claim
21 words
An article according to claim 2, wherein said amorphous photoconductive material has a dark resistivity of at least 10 10 Ω·cm.
Claim 30
Dependent Claim
26 words
An article according to claim 2, wherein said amorphous photoconductive material has incorporated therein at least one impurity element for providing a desired conductivity type material.
Claim 31
Dependent Claim
74 words
An article according to claim 1, wherein said light-sensitive film is constructed of at least two layers of at least one photoconductive material, with one of said at least two layers made of said amorphous photoconductive material, and with the amorphous photoconductive material layer having a higher resistivity than the other photoconductive layers of said light-sensitive film, whereby the amorphous photoconductive material layer can act to store charge patterns formed in the light-sensitive film.
Claim 32
Dependent Claim
85 words
An article comprising a light-sensitive film constructed of at least a single layer of at least one photoconductive material on a substrate, wherein at least one layer of said at least a single layer is made of an amorphous photoconductive material whose composition is expressed by a formula [Si 1-x C x ] 1-y [H] y where 0<x≦0.3 and 0.02≦ y≦ 0.3, with up to 40% of the carbon in the amorphous photoconductive material being replaced by germanium, whereby said light-sensitive film exhibits photoconductive characteristics.
Claim 33
Dependent Claim
85 words
An article comprising a light-sensitive film constructed of at least a single layer of at least one photoconductive material on a substrate, wherein at least one layer of said at least a single layer is made of an amorphous photoconductive material whose composition is expressed by a formula [Si 1-x C x ] 1-y [H] y where 0<x≦0.3 and 0.02≦ y≦ 0.3, with up to 40% of the carbon in the amorphous photoconductive material being replaced by germanium, whereby said light-sensitive film exhibits photoconductive characteristics.
Claim 34
Dependent Claim
21 words
An article according to claim 24, wherein said amorphous photoconductive material has a dark resistivity of at least 10 10 Ω·cm.
Claim 35
Dependent Claim
26 words
An article according to claim 24, wherein said amorphous photoconductive material has at least one impurity element incorporated therein for providing a desired conductivity type material.
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) | 1984-09-14 | 1985-03-16 | 1985-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-14 | 1989-03-16 | 1989-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-14 | 1993-03-16 | 1993-09-15 | $7700.00 | Window Closed / Lapsed |