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EP0503570A2
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Photoconductor coupled liquid crystal light valve
Assignee: Sharp Corp
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Filing: 1992-03-10
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Granted: —
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Expires: 2012-03-10
Abstract
Abstract A photoconductor coupled liquid crystal light valve which comprises a pair of substrates opposite to each other, transparent electrodes arranged on each of the substrates, either one having a photoconductive layer and a carrier trapping layer formed over the transparent electrodes , a liquid crystal layer injected between the substrates and a voltage application means between the transparent electrodes. <IMAGE>
Inventors
- 👤 Takashi Hatakawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 10:14
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/135; G02F1/1354; C; C09; C09K; C09K2323/00; C09K2323/05; C09K2323/053
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
65 words
A photoconductor coupled liquid crystal light valve which comprises a pair of substrates (1,1) opposite to each other, transparent electrodes (2,2) arranged on each of the substrates, either one having a photoconductive layer (3) and a carrier trapping layer (4) formed over the transparent electrodes, a liquid crystal layer (6) injected between the substrates and a voltage application means (8) between the transparent electrodes (2,2).
Claim 2
Dependent Claim
27 words
A photoconductor coupled liquid crystal light valve as set forth in claim 1, wherein the photoconductive layer (3) is formed from amorphous silicon which may contain hydrogen.
Claim 3
Dependent Claim
50 words
A photoconductor coupled liquid crystal light valve as set forth in claim 1, wherein the carrier trapping layer (4) is formed from amorphous silicon which may contain hydrogen and is doped with an element of the IIIB group in a higher amount than the doped amount of the photoconductive layer.
Claim 4
Dependent Claim
46 words
A photoconductor coupled liquid crystal light valve as set forth in claim 1, wherein the carrier trapping layer (4) is formed from amorphous silicon which is doped with an element of the VB group in a higher amount than the doped amount of the photoconductive layer.
Claim 5
Dependent Claim
51 words
A photoconductor coupled liquid crystal light valve as set forth in claim 1, wherein the carrier trapping layer (4) is formed from amorphous silicon nitride or amorphous silicon carbide each being doped with an element of the IIIB group in a higher amount than the doped amount of the photoconductive layer.
Claim 6
Dependent Claim
51 words
A photoconductor coupled liquid crystal light valve as set forth in claim 1, wherein the carrier trapping layer (4) is formed from amorphous silicon nitride or amorphous silicon carbide each being doped with an element of the VB group in a higher amount than the doped amount of the photoconductive layer.
Claim 7
Dependent Claim
25 words
A photoconductor coupled liquid crystal light valve as set forth in claim 3 , wherein the element of the IIIB group is B or A1.
Claim 8
Dependent Claim
25 words
A photoconductor coupled liquid crystal light valve as set forth in claim 4, wherein the element of the VB group is P, N or As.
Claim 9
Dependent Claim
24 words
A photoconductor coupled liquid crystal light valve set forth in claim 1 in which a reflection layer (5) is formed on the photoconductive layer.
Claim 10
Dependent Claim
35 words
A photoconductor coupled liquid crystal light valve set forth in claim 1 in which an orientation film (7) is formed on the photoconductive layer of one substrate and the transparent electrode of another substrate, respectively.
Claim 11
Dependent Claim
49 words
A photoconductor coupled liquid crystal light valve set forth in claim 1 in which a reflection layer (5) is formed on the photoconductive layer (3) of one substrate (1), and an orientation film (7) is formed on the reflection layer an the transparent electrode (2) of another substrate, respectively.
References Cited (Backward Citations)
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