Patent US5453864A successfully refreshed from Google Patents.
US5453864A
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Liquid crystal element and electronic apparatus
Assignee: Seiko Epson Corp
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Filing: 1994-05-24
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Granted: 1995-09-26
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Expires: 2014-05-24
Abstract
Abstract A liquid crystal display element having flexible substrates, wherein the liquid crystal material disposed between the flexible substrates contains a tolan derivative represented by the general formula: <IMAGE> where R is a straight chain alkyl group having 1-10 carbon atoms.
Inventors
- 👤 Shuhei Yamada
- 👤 Nobutaka Suzuki
- 👤 Masahiro Kuroiwa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:18
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/10; C09K19/14; C09K19/18; C07; C07C; C07C255/00; C07C255/49; C07C255/50; C09K19/42; C09K19/46; C07C2601/00; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
85 words
A liquid crystal display cell, comprising: a pair of spaced apart opposed substrates, at least one of which is a flexible substrate formed of organic material; a liquid crystal composition including a liquid crystal material sealed in the space between the flexible substrates, the liquid crystal material including a tolan derivative represented by the general formula: ##STR49## where R is a straight chain alkyl group having from 1 to carbon atoms; and an electrode pattern supported by the interior surface of the opposed flexible substrates.
Claim 2
Dependent Claim
85 words
A liquid crystal display cell, comprising: a pair of spaced apart opposed substrates, at least one of which is a flexible substrate formed of organic material; a liquid crystal composition including a liquid crystal material sealed in the space between the flexible substrates, the liquid crystal material including a tolan derivative represented by the general formula: ##STR49## where R is a straight chain alkyl group having from 1 to carbon atoms; and an electrode pattern supported by the interior surface of the opposed flexible substrates.
Claim 3
Dependent Claim
87 words
The liquid crystal display cell of claim 1, wherein the liquid crystal composition includes at least one of an ester compound of a cyclohexane carboxylic acid phenyl ester having negative (n-type) induced anisotropy represented by the general formula: ##STR50## where R and R' are straight chain alkyl groups having from 1 to 10 carbon atoms, and a benzoic acid phenyl ester having positive (p-type) induced anisotropy represented by the general formula: ##STR51## where R is a straight chain alkyl group having from 1 to 10 carbon atoms.
Claim 4
Dependent Claim
15 words
The liquid crystal display cell of claim 2, wherein the organic material includes polymer material.
Claim 5
Dependent Claim
16 words
The liquid crystal display cell of claim 2, wherein the flexible substrate is a polycarbonate film.
Claim 6
Dependent Claim
25 words
The liquid crystal display cell of claim 2, wherein the flexible substrate is selected from the group consisting of polyallylate, polyethersulfon, polyethylene terephthalate and polyimide.
Claim 7
Dependent Claim
24 words
The liquid crystal display cell of claim 2, wherein the tolan derivative is 2 to 25 wt. % of the total liquid crystal composition.
Claim 8
Dependent Claim
24 words
The liquid crystal display cell of claim 2, wherein the tolan derivative is 6 to 20 wt. % of the total liquid crystal composition.
Claim 9
Dependent Claim
22 words
The liquid crystal display cell of claim 2, wherein the tolan derivative is less than 10% of the total liquid crystal composition.
Claim 10
Dependent Claim
38 words
The liquid crystal cell of claim 2, wherein the cyclohexane carboxylic acid phenyl ester is 50 to 80 wt. % and the benzoic acid phenyl ester is 5 to 30 wt. % of the total liquid crystal composition.
Claim 11
Dependent Claim
38 words
The liquid crystal cell of claim 2, wherein the cyclohexane carboxylic acid phenyl ester is 60 to 65 wt. % and the benzoic acid phenyl ester is 5 to 15 wt. % of the total liquid crystal composition.
Claim 12
Dependent Claim
25 words
The liquid crystal cell of claim 2, wherein the benzoic acid phenyl ester is 0 to 15 wt. % of the total liquid crystal composition.
Claim 13
Dependent Claim
51 words
The liquid crystal display cell of claim 1, wherein the liquid crystal composition includes an ester compound of a cyclohexane carboxylic acid phenyl ester having negative (n-type) induced anisotropy represented by the general formula: ##STR52## where R and R' are straight chain alkyl groups having from 1 to 10 carbon atoms.
Claim 14
Dependent Claim
26 words
The liquid crystal display cell of claim 12, wherein the cyclohexane carboxylic acid phenyl is 50 to 80 wt. % of the total liquid crystal composition.
Claim 15
Dependent Claim
26 words
The liquid crystal display cell of claim 12, wherein the cyclohexane carboxylic acid phenyl is 60 to 65 wt. % of the total liquid crystal composition.
Claim 16
Dependent Claim
45 words
The liquid crystal display cell of claim 1, wherein the liquid crystal composition includes a benzoic acid phenyl ester having positive (p-type) induced anisotropy represented by the general formula: ##STR53## where R is a straight chain alkyl group having from 1 to 10 carbon atoms.
Claim 17
Dependent Claim
26 words
The liquid crystal display cell of claim 15, wherein the benzoic acid phenyl ester is 5 to 30 wt. % of the total liquid crystal composition.
Claim 18
Dependent Claim
26 words
The liquid crystal display cell of claim 15, wherein the benzoic acid phenyl ester is 5 to 15 wt. % of the total liquid crystal composition.
Claim 19
Dependent Claim
26 words
The liquid crystal display cell of claim 15, wherein the benzoic acid phenyl ester is 0 to 15 wt. % of the total liquid crystal composition.
Claim 20
Dependent Claim
90 words
An electronic apparatus having installed therein a liquid crystal display cell comprising: a pair of spaced apart opposed flexible substrates, at least one of which is formed of organic material; a liquid crystal composition including a liquid crystal material sealed in the space between the flexible substrates the liquid crystal material including a tolan derivative represented by the general formula: ##STR54## where R is a straight chain alkyl group having from 1 to 20 carbon atoms; and an electrode pattern supported by the interior surface of the opposed flexible substrates.
Claim 21
Dependent Claim
90 words
An electronic apparatus having installed therein a liquid crystal display cell comprising: a pair of spaced apart opposed flexible substrates, at least one of which is formed of organic material; a liquid crystal composition including a liquid crystal material sealed in the space between the flexible substrates the liquid crystal material including a tolan derivative represented by the general formula: ##STR54## where R is a straight chain alkyl group having from 1 to 20 carbon atoms; and an electrode pattern supported by the interior surface of the opposed flexible substrates.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1998-09-25 | 1999-03-27 | 1999-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-09-25 | 2003-03-27 | 2003-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-09-25 | 2007-03-27 | 2007-09-26 | $7700.00 | Window Closed / Lapsed |