Patent EP0365255A2 successfully refreshed from Google Patents.
EP0365255A2
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Ferroelectric liquid crystal composition and liquid crystal display device
Assignee: Panasonic Holdings Corp
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Filing: 1989-10-16
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Granted: —
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Expires: 2009-10-16
Abstract
Abstract This invention prevents a time-course deterioration of characteristics of a liquid crystal panel and dramatically increases the life of the panel by using a ferroelectric liquid crystal compound in which an proper amount of aliphatic amine or epoxy compound is added to a ferroelectric liquid crystal material.
Inventors
- 👤 Kazuhiro Johten
- 👤 Tsuyoshi Uemura
- 👤 Hiroyuki Onishi
- 👤 Hideaki 303 Tojusoukitayama-Cho Mochizuki
- 👤 Hiroshi Satani
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 20:13
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/52; C09K19/54
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
18 words
A ferroelectric liquid crystal compound comprising a ferroelectric liquid crystal material, and a primary or secondary aliphatic amine.
Claim 2
Dependent Claim
18 words
A ferroelectric liquid crystal compound comprising a ferroelectric liquid crystal material, and a primary or secondary aliphatic amine.
Claim 3
Dependent Claim
43 words
A ferroelectric liquid crystal compound according to Claim 1, wherein the aliphatic amine is shown by the following Formula I, where each of R₁ and R₁′ is -H or a hydrocarbon radical, and R₂ is a hydrocarbon radical: Formula I R₁- -R₂- -R₁′
Claim 4
Dependent Claim
43 words
A ferroelectric liquid crystal compound according to Claim 2, wherein, among radicals of R₂, one CH₂ radical or two or more CH₂ radicals which are not adjoining each other are substituted by at least one member of -O-, -CO-, -OCO- and -COO- radicals.
Claim 5
Dependent Claim
41 words
A ferroelectric liquid crystal compound according to Claim 1, wherein the aliphatic amine is shown by the following formula II, where R₃ is -H or (CH₂)nOH (n be 1 or more), and R₄ is a hydrocarbon radical: Formula II R₃- -R₄
Claim 6
Dependent Claim
43 words
A ferroelectric liquid crystal compound according to Claim 4, wherein, among radicals of R₄, one CH₂ radical or two or more CH₂ radicals which are not adjoining each other are substituted by at least one member of -O-, -CO-, -OCO-, and -COO- radicals.
Claim 7
Dependent Claim
22 words
A ferroelectric liquid crystal compound according to Claim 1, wherein an added amount of the aliphatic amine is 0.01 to 5 wt%.
Claim 8
Dependent Claim
14 words
A liquid crystal display using a ferroelectric liquid crystal compound according to Claim 1.
Claim 9
Dependent Claim
15 words
A ferroelectric liquid crystal compound comprising a ferroelectric liquid crystal material, and an epoxy compound.
Claim 10
Dependent Claim
15 words
A ferroelectric liquid crystal compound comprising a ferroelectric liquid crystal material, and an epoxy compound.
Claim 11
Dependent Claim
17 words
A ferroelectric liquid crystal compound according to Claim 8, wherein the epoxy compound is an epoxy resin.
Claim 12
Dependent Claim
18 words
A ferroelectric liquid crystal compound according to Claim 8, wherein the epoxy compound comprises derivatives of glycidyl radicals
Claim 13
Dependent Claim
26 words
A ferroelectric liquid crystal compound according to Claim 8, wherein the epoxy compound is shown by the following Formula III, where R₅ is a hydrocarbon radical:
Claim 14
Dependent Claim
43 words
A ferroelectric liquid crystal compound according to Claim 11, wherein, among radicals of R₅, one CH₂ radical or two or more CH₂ radicals which are not adjoining each other are substituted by at least one member of -O-, -CO-, -OCO- and -COO- radicals.
Claim 15
Dependent Claim
22 words
A ferroelectric liquid crystal compound according to Claim 8, wherein an added amount of the epoxy compound is 0.01 to 5 wt%.
Claim 16
Dependent Claim
14 words
A liquid crystal display using a ferroelectric liquid crystal compound according to Claim 8.
References Cited (Backward Citations)
No citation records indexed.
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