EP0484972A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Liquid crystal device, display apparatus using same and display method using same
Assignee: Canon Inc
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Filing: 1991-11-08
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Granted: —
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Expires: 2011-11-08
Abstract
Abstract A liquid crystal device is constituted by disposing a display layer (106) between a pair of electrode plates (102,102a). The display layer comprises a mesomorphic polymer (105) and a low-molecular weight mesomorphic compound (104). The mesomorphic polymer may preferably be a main chain-type mesomorphic polymer having an ester linkage or a mesomorphic polymer derived from a polymerizable mesomorphic compound. The display layer may preferably comprise a mesomorphic polymer having a dielectric anisotropy Δε of -3.0 or below and a low-molecular weight mesomorphic compound incompatible with the mesomorphic polymer and having a positive dielectric anisotropy.
Inventors
- 👤 Kazuo C/O Canon Kabushiki Kaisha Yoshinaga
- 👤 Hidetoshi C/O Canon Kabushiki Kaisha Suzuki
- 👤 Katsumi C/O Canon Kabushiki Kaisha Kurematsu
- 👤 Yomishi C/O Canon Kabushiki Kaisha Toshida
- 👤 Toshikazu C/O Canon Kabushiki Kaisha Ohnishi
- 👤 Hideaki C/O Canon Kabushiki Kaisha Mitsutake
- 👤 Nobuo C/O Canon Kabushiki Kaisha Minoura
- 👤 Koichi C/O Canon Kabushiki Kaisha Sato
- 👤 Takeo C/O Canon Kabushiki Kaisha Eguchi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 12:20
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/38; C09K19/3804; C09K19/3809; C09K19/52; C09K19/54; C09K19/542; C09K19/544
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
39 words
A liquid crystal device, comprising: a pair of electrode plates and a display layer disposed therebetween comprising a main chain-type mesomorphic polymer having an ester linkage and a low-molecular weight mesomorphic compound incompatible with said main chain-type mesomorphic polymer.
Claim 2
Dependent Claim
18 words
A device according to Claim 1, which further comprises an alignment control layer formed on said electrode plates.
Claim 3
Dependent Claim
35 words
A display apparatus, including: a liquid crystal device according to Claim 1, means for emitting light, means for applying voltage to said device, and means for separating said light into transmitted light and scattered light.
Claim 4
Dependent Claim
24 words
A display method, comprising: illuminating a liquid crystal device according to claim 1 with light and effecting display by employing the resultant scattered light.
Claim 5
Dependent Claim
42 words
A method, according to Claim 4, wherein an electric field is applied to said liquid crystal device to cause an electric field response of said low-molecular weight mesomorphic compound, which response results in a difference in scattering degree of said scattered light.
Claim 6
Dependent Claim
52 words
A liquid crystal device, comprising: a pair of electrode plates and a display layer disposed therebetween comprising a mesomorphic polymer and a low-molecular weight mesomorphic compound, wherein said mesomorphic polymer has been formed through polymerization in mesomorphic state of a composition comprising a polymerizable mesomorphic monomer and the low-molecular weight mesomorphic compound.
Claim 7
Dependent Claim
18 words
A device according to Claim 6, wherein said mesomorphic polymer is incompatible with said low-molecular weight mesomorphic compound.
Claim 8
Dependent Claim
18 words
A device according to Claim 6, which further comprises an alignment control layer formed on said electrode plates.
Claim 9
Dependent Claim
35 words
A display apparatus, including: a liquid crystal device according to Claim 6, means for emitting light, means for applying voltage to said device, and means for separating said light into transmitted light and scattered light.
Claim 10
Dependent Claim
24 words
A display method, comprising: illuminating a liquid crystal device according to Claim 6 with light and effecting display by employing the resultant scattered light.
Claim 11
Dependent Claim
42 words
A method, according to Claim 10, wherein an electric field is applied to said liquid crystal device to cause an electric field response of said low-molecular weight mesomorphic compound, which response results in a difference in scattering degree of said scattered light.
Claim 12
Dependent Claim
46 words
A liquid crystal device, comprising: a pair of electrode plates and a display layer disposed therebetween comprising a mesomorphic polymer having a dielectric anisotropy Δε of -3.0 or below and a low-molecular weight mesomorphic compound incompatible with said mesomorphic polymer and having a positive dielectric anisotropy.
Claim 13
Dependent Claim
18 words
A device according to Claim 12, which further comprises an alignment control layer formed on said electrode plates.
Claim 14
Dependent Claim
23 words
A device according to Claim 12, wherein said mesomorphic polymer is obtained from a polymerizable mesomorphic monomer by polymerization in a mesomorphic state.
Claim 15
Dependent Claim
18 words
A device according to Claim 14, which further comprises an alignment control layer formed on said electrode plates.
Claim 16
Dependent Claim
35 words
A display apparatus, including: a liquid crystal device according to Claim 12, means for emitting light, means for applying voltage to said device, and means for separating said light into transmitted light and scattered light.
Claim 17
Dependent Claim
35 words
A display apparatus, including: a liquid crystal device according to Claim 14, means for emitting light, means for applying voltage to said device, and means for separating said light into transmitted light and scattered light.
Claim 18
Dependent Claim
24 words
A display method, comprising: illuminating a liquid crystal device according to Claim 12 with light and effecting display by employing the resultant scattered light.
Claim 19
Dependent Claim
24 words
A display method, comprising: illuminating a liquid crystal device according to Claim 14 with light and effecting display by employing the resultant scattered light.
Claim 20
Dependent Claim
42 words
A method, according to Claim 18, wherein a electric field is applied to said liquid crystal device to cause an electric field response of said low-molecular weight mesomorphic compound, which response results in a difference in scattering degree of said scattered light.
Claim 21
Dependent Claim
42 words
A method, according to Claim 19, wherein an electric field is applied to said liquid crystal device to cause an electric field response of said low-molecular weight mesomorphic compound, which response results in a difference in scattering degree of said scattered light.
References Cited (Backward Citations)
No citation records indexed.
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