GB1472247A - Liquid crystal devices - Google Patents

Liquid crystal devices

Info

Publication number
GB1472247A
GB1472247A GB804274A GB804274A GB1472247A GB 1472247 A GB1472247 A GB 1472247A GB 804274 A GB804274 A GB 804274A GB 804274 A GB804274 A GB 804274A GB 1472247 A GB1472247 A GB 1472247A
Authority
GB
United Kingdom
Prior art keywords
liquid crystal
feb
alkyl
optically active
crystal devices
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.)
Expired
Application number
GB804274A
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.)
UK Secretary of State for Defence
Original Assignee
UK Secretary of State for Defence
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 UK Secretary of State for Defence filed Critical UK Secretary of State for Defence
Priority to GB804274A priority Critical patent/GB1472247A/en
Priority to FR7505287A priority patent/FR2262319B1/fr
Priority to JP50022358A priority patent/JPS5810729B2/en
Priority to DE19752507524 priority patent/DE2507524C2/en
Priority to CH220675A priority patent/CH579285A5/xx
Priority to US05/768,371 priority patent/US4084884A/en
Publication of GB1472247A publication Critical patent/GB1472247A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • G02F1/139—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
    • G02F1/1396—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent the liquid crystal being selectively controlled between a twisted state and a non-twisted state, e.g. TN-LC cell
    • 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
    • C09K19/12—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings at least two benzene rings directly linked, e.g. biphenyls
    • C09K19/126—Compounds containing at least one asymmetric carbon atom
    • 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
    • C09K19/52—Liquid crystal materials characterised by components which are not liquid crystals, e.g. additives with special physical aspect: solvents, solid particles
    • C09K19/58—Dopants or charge transfer agents
    • C09K19/586—Optically active dopants; chiral dopants
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • 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
    • C09K19/12—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings at least two benzene rings directly linked, e.g. biphenyls
    • C09K2019/121—Compounds containing phenylene-1,4-diyl (-Ph-)
    • C09K2019/122—Ph-Ph

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Mathematical Physics (AREA)
  • Liquid Crystal (AREA)
  • Liquid Crystal Substances (AREA)

Abstract

1472247 Liquid crystal compositions DEFENCE SECRETARY OF STATE FOR 21 Feb 1975 [21 Feb 1974] 8042/74 Heading C4X [Also in Division G2] Optically active liquid crystal compositions suitable for use in a "twist" electro-optic cell (Divisions H3-H5) are formed-of a p-n-alkyl or alkoxy-p<SP>1</SP>-cyano-biphenyl (with positive dielectric anisotropy) with a minor amount of cholesteryl nonanoate, Canada balsam, or a compound where R is n-alkyl, e.g. methyl, and the asterisk denotes an optically active centre.
GB804274A 1974-02-21 1974-02-21 Liquid crystal devices Expired GB1472247A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB804274A GB1472247A (en) 1974-02-21 1974-02-21 Liquid crystal devices
FR7505287A FR2262319B1 (en) 1974-02-21 1975-02-20
JP50022358A JPS5810729B2 (en) 1974-02-21 1975-02-21 Liquid crystal cell and its manufacturing method
DE19752507524 DE2507524C2 (en) 1974-02-21 1975-02-21 Liquid crystal cell and process for its manufacture
CH220675A CH579285A5 (en) 1974-02-21 1975-02-21
US05/768,371 US4084884A (en) 1974-02-21 1977-02-14 Liquid crystal devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB804274A GB1472247A (en) 1974-02-21 1974-02-21 Liquid crystal devices

Publications (1)

Publication Number Publication Date
GB1472247A true GB1472247A (en) 1977-05-04

Family

ID=9844663

Family Applications (1)

Application Number Title Priority Date Filing Date
GB804274A Expired GB1472247A (en) 1974-02-21 1974-02-21 Liquid crystal devices

Country Status (5)

Country Link
JP (1) JPS5810729B2 (en)
CH (1) CH579285A5 (en)
DE (1) DE2507524C2 (en)
FR (1) FR2262319B1 (en)
GB (1) GB1472247A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4326279A (en) 1979-01-26 1982-04-20 National Research Development Corporation Analogue displays
EP0132377A2 (en) 1983-07-22 1985-01-30 The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Compounds containing a fluorobiphenylyl group and their use in liquid crystal materials and device

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1478592A (en) * 1974-03-01 1977-07-06 Secr Defence Liquid crystal devices
DE2527485C2 (en) 1975-06-20 1985-06-05 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Electrically controllable display element
JPS5525006A (en) * 1978-08-09 1980-02-22 Citizen Watch Co Ltd Liquid crystal display device
JPS55127520A (en) * 1979-03-26 1980-10-02 Citizen Watch Co Ltd Liquid crystal display element
JPS5692518A (en) * 1979-12-26 1981-07-27 Sharp Corp Liquid crystal display device
JPS5792316A (en) * 1980-11-28 1982-06-08 Seiko Epson Corp Manufacture of phase transition type liquid crystal display device
JP2855649B2 (en) * 1989-04-27 1999-02-10 セイコーエプソン株式会社 Projection display device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT946051B (en) * 1970-12-04 1973-05-21 Hoffmann La Roche OPTICAL CELL
US3834792A (en) * 1972-04-10 1974-09-10 Ncr Alignment film for a liquid crystal display cell

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4326279A (en) 1979-01-26 1982-04-20 National Research Development Corporation Analogue displays
EP0132377A2 (en) 1983-07-22 1985-01-30 The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Compounds containing a fluorobiphenylyl group and their use in liquid crystal materials and device

Also Published As

Publication number Publication date
DE2507524C2 (en) 1985-04-18
FR2262319B1 (en) 1982-02-19
JPS50143557A (en) 1975-11-19
CH579285A5 (en) 1976-08-31
FR2262319A1 (en) 1975-09-19
DE2507524A1 (en) 1976-01-22
JPS5810729B2 (en) 1983-02-26

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19950220