FR2380333A1 - Nouvelle famille de cristaux liquides a grande anisotropie dielectrique negative, et dispositifs utilisant de tels cristaux liquides - Google Patents

Nouvelle famille de cristaux liquides a grande anisotropie dielectrique negative, et dispositifs utilisant de tels cristaux liquides

Info

Publication number
FR2380333A1
FR2380333A1 FR7703916A FR7703916A FR2380333A1 FR 2380333 A1 FR2380333 A1 FR 2380333A1 FR 7703916 A FR7703916 A FR 7703916A FR 7703916 A FR7703916 A FR 7703916A FR 2380333 A1 FR2380333 A1 FR 2380333A1
Authority
FR
France
Prior art keywords
liquid crystals
devices
dielectric anisotropy
negative dielectric
large negative
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7703916A
Other languages
English (en)
Other versions
FR2380333B1 (fr
Inventor
Alain Beguin
Jean-Claude Dubois
Annie Zann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thales SA
Original Assignee
Thomson CSF SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thomson CSF SA filed Critical Thomson CSF SA
Priority to FR7703916A priority Critical patent/FR2380333A1/fr
Priority to DE19782805456 priority patent/DE2805456C2/de
Priority to GB552678A priority patent/GB1576603A/en
Priority to JP1482578A priority patent/JPS602297B2/ja
Publication of FR2380333A1 publication Critical patent/FR2380333A1/fr
Priority to US06/029,536 priority patent/US4235736A/en
Application granted granted Critical
Publication of FR2380333B1 publication Critical patent/FR2380333B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00—Liquid crystal materials
    • C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
    • C09K19/06—Non-steroidal liquid crystal compounds
    • C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
    • C09K19/10—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings
    • C09K19/20—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a chain containing carbon and oxygen atoms as chain links, e.g. esters or ethers
    • C09K19/2007—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a chain containing carbon and oxygen atoms as chain links, e.g. esters or ethers the chain containing -COO- or -OCO- groups
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/347—Preparation of carboxylic acids or their salts, halides or anhydrides by reactions not involving formation of carboxyl groups
    • C07C51/363—Preparation of carboxylic acids or their salts, halides or anhydrides by reactions not involving formation of carboxyl groups by introduction of halogen; by substitution of halogen atoms by other halogen atoms
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
    • C07C69/76—Esters of carboxylic acids having a carboxyl group bound to a carbon atom of a six-membered aromatic ring

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Liquid Crystal Substances (AREA)

Abstract

L'invention a pour objet une famille de cristaux liquides susceptibles de présenter en fonction de la température des phases alternativement smectiques et nématiques. La famille répond à la formule générale :
FR7703916A 1977-02-11 1977-02-11 Nouvelle famille de cristaux liquides a grande anisotropie dielectrique negative, et dispositifs utilisant de tels cristaux liquides Granted FR2380333A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR7703916A FR2380333A1 (fr) 1977-02-11 1977-02-11 Nouvelle famille de cristaux liquides a grande anisotropie dielectrique negative, et dispositifs utilisant de tels cristaux liquides
DE19782805456 DE2805456C2 (de) 1977-02-11 1978-02-09 Flüssigkristalline Biphenylester substituierter Benzoesäuren, diese enthaltendes Gemisch und deren Verwendung
GB552678A GB1576603A (en) 1977-02-11 1978-02-10 Diphenylic esters exhibiting mesomorphic phasesand liquid crystal materials containing them
JP1482578A JPS602297B2 (ja) 1977-02-11 1978-02-10 液晶相を示す新規ジフエニルエステル
US06/029,536 US4235736A (en) 1977-02-11 1979-04-12 Diphenylic esters exhibiting mesomorphic phases

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7703916A FR2380333A1 (fr) 1977-02-11 1977-02-11 Nouvelle famille de cristaux liquides a grande anisotropie dielectrique negative, et dispositifs utilisant de tels cristaux liquides

Publications (2)

Publication Number Publication Date
FR2380333A1 true FR2380333A1 (fr) 1978-09-08
FR2380333B1 FR2380333B1 (fr) 1980-03-14

Family

ID=9186621

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7703916A Granted FR2380333A1 (fr) 1977-02-11 1977-02-11 Nouvelle famille de cristaux liquides a grande anisotropie dielectrique negative, et dispositifs utilisant de tels cristaux liquides

Country Status (4)

Country Link
JP (1) JPS602297B2 (fr)
DE (1) DE2805456C2 (fr)
FR (1) FR2380333A1 (fr)
GB (1) GB1576603A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2436777A1 (fr) * 1978-09-20 1980-04-18 Chisso Corp Derive de la 2,3-dicyano-hydroquinone et leur application aux liquides
EP0044759A1 (fr) * 1980-07-18 1982-01-27 Thomson-Csf Cristal liquide smectique de type A présentant une anisotropie diélectrique positive

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2436777A1 (fr) * 1978-09-20 1980-04-18 Chisso Corp Derive de la 2,3-dicyano-hydroquinone et leur application aux liquides
EP0044759A1 (fr) * 1980-07-18 1982-01-27 Thomson-Csf Cristal liquide smectique de type A présentant une anisotropie diélectrique positive

Also Published As

Publication number Publication date
JPS53101345A (en) 1978-09-04
DE2805456A1 (de) 1978-08-17
JPS602297B2 (ja) 1985-01-21
GB1576603A (en) 1980-10-08
FR2380333B1 (fr) 1980-03-14
DE2805456C2 (de) 1984-04-26

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