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EP0508227A2
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Optical modulation element
Assignee: Canon Inc
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Filing: 1992-03-26
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Granted: —
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Expires: 2012-03-26
Abstract
Abstract An optical modulation element, in which a pixel pinching a ferroelectric layer (104) and an orientation layer (103,103') with the liquid crystal layer being oriented thereon is formed between a pair of electrodes (102,102'), and an external voltage is applied across the electrodes in response to gradation signals to perform gradation drivings, is characterized in that the material of the orientation layer (103,103') is a high-molecular polymer with a ultrafine granular conductive substance being dispersed therein.
Inventors
- 👤 Ryoji c/o Canon Kabushiki Kaisha Fujiwara
- 👤 Shuzo C/O Canon Kabushiki Kaisha Kaneko
- 👤 Akio C/O Canon Kabushiki Kaisha Maruyama
- 👤 Tomoko c/o Canon Kabushiki Kaisha Maruyama
- 👤 Tomoko c/o Canon Kabushiki Kaisha Murakami
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 01:35
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/20; C; C09; C09K; C09K19/00; C09K19/52; C09K19/58; G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1337; G02F1/133711; G02F1/13378; G02F1/133784; G02F1/133796; G02F1/137; G02F1/139; G02F1/141; G02F2203/00; G02F2203/30
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
69 words
An optical modulation element in which a pixel pinching a ferroelectric layer and an orientation layer with said liquid crystal layer being oriented thereon is formed between a pair of electrodes, and an external voltage is applied across said electrodes in response to gradation signals to perform gradation drivings, wherein the material of said orientation layer is a high-molecular polymer with a ultrafine granular conductive substance being dispersed therein.
Claim 2
Dependent Claim
20 words
An optical modulation element according to Claim 1, wherein said high-molecular polymer has a siloxine coupling in its principal chain.
Claim 3
Dependent Claim
22 words
An optical modulation element according to Claim 1, wherein said ultrafine granular conductive substance is a tin oxide with Sb being doped.
Claim 4
Dependent Claim
22 words
An optical modulation element according to Claim 3, wherein the granular diameter of said ultrafine granular conductive substance is 100Å or less.
Claim 5
Dependent Claim
26 words
An optical modulation element according to either one of Claim 1 through Claim 4, wherein said orientation layer is has been subjected to a rubbing process.
Claim 6
Dependent Claim
63 words
An optical modulation element in which a pixel pinching at least a liquid crystal layer is formed between a pair of electrodes, and an external voltage is applied across said electrodes to cause said pixel to be modulated, wherein at least one side of said pixel is formed with an electrode, a high-molecular polymer having conductivity, and a column shaped orientation layer sequentially.
Claim 7
Dependent Claim
34 words
An optical modulation element according to Claim 6, wherein said high-molecular polymer has a specific resistance of 10⁸ - 2 x 10¹¹Ω · cm and a dielectric constant of 20 dielectric constant or more.
Claim 8
Dependent Claim
24 words
An optical modulation element according to Claim 6, wherein said high-molecular polymer is a high-molecular polymer in which a ultrafine granular substance is dispersed.
Claim 9
Dependent Claim
24 words
An optical modulation element according to Claim 6, wherein said column shaped orientation layer is a rhombic deposition layer formed by an inorganic oxide.
Claim 10
Dependent Claim
21 words
An optical modulation element according to Claim 6, wherein said liquid crystal layer comprises a layer including a ferroelectric liquid crystal.
Claim 11
Dependent Claim
23 words
An optical modulation element according to Claim 10, wherein said ferroelectric liquid crystal layer includes a dopant for providing a low resistance therefor.
Claim 12
Dependent Claim
74 words
An optical modulation element in which a pixel pinching a ferroelectric layer and an orientation layer with said liquid crystal layer being oriented thereon is formed between a pair of electrodes, and an external voltage is applied across said electrodes in response to gradation signals to perform gradation drivings, wherein at least one side of said pixel is formed with an electrode, a high-molecular polymer having conductivity, and a column shaped orientation layer sequentially.
Claim 13
Dependent Claim
34 words
An optical modulation element according to Claim 12, wherein said high-molecular polymer has a specific resistance of 10⁸ - 2 x 10¹¹Ω · cm and a dielectric constant of 20 dielectric constant or more.
Claim 14
Dependent Claim
23 words
An optical modulation element according to Claim 12, wherein said ferroelectric liquid crystal layer includes a dopant for providing a low resistance therefor.
References Cited (Backward Citations)
No citation records indexed.
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