GB1526246A - Method of aligning liquid crystalline materials and its application to helical nematic display cells - Google Patents

Method of aligning liquid crystalline materials and its application to helical nematic display cells

Info

Publication number
GB1526246A
GB1526246A GB4509975A GB4509975A GB1526246A GB 1526246 A GB1526246 A GB 1526246A GB 4509975 A GB4509975 A GB 4509975A GB 4509975 A GB4509975 A GB 4509975A GB 1526246 A GB1526246 A GB 1526246A
Authority
GB
United Kingdom
Prior art keywords
deposition
electrode
application
liquid crystalline
display cells
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
GB4509975A
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
Priority claimed from FR7436489A external-priority patent/FR2289931A1/en
Priority claimed from FR7441132A external-priority patent/FR2294462A2/en
Application filed by Thomson CSF SA filed Critical Thomson CSF SA
Publication of GB1526246A publication Critical patent/GB1526246A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
    • C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
    • C08G65/04—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers only
    • C08G65/22—Cyclic ethers having at least one atom other than carbon and hydrogen outside the ring
    • 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
    • G02F1/133711—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by organic films, e.g. polymeric films

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mathematical Physics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Liquid Crystal (AREA)

Abstract

1526246 Modulating light THOMSON-CSF 30 Oct 1975 [31 Oct 1974 13 Dec 1974] 45099/75 Heading G2F In a twisted nematic liquid crystal display device comprising a liquid crystal film located between two glass plate electrodes, the elongated molecules of the film are given orientations parallel to the planes of the electrodes by depositing on each electrode a polymer of para-xylylene, methylmethacrylate, methylsiloxane or 3-(α, #-epoxy-γ-propoxy) -propyl-trimethoxysilane, or a copolymer of styrene and divinylbenzene, using one of the following methods: deposition by electric charge from the gas phaser, deposition by thermal effect from the gas phase, deposition by transfer of a homogeneous film to the electrode, followed by polymerization by heating, or deposition by drawing the electrode through a solution of the prepolymer, followed by polymerization by heating, the polymer deposit then being rubbed.
GB4509975A 1974-10-31 1975-10-30 Method of aligning liquid crystalline materials and its application to helical nematic display cells Expired GB1526246A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7436489A FR2289931A1 (en) 1974-10-31 1974-10-31 Orienting liquid crystals - by depositing org polymer layer on electrodes, and rubbing polymer layer in predefined direction
FR7441132A FR2294462A2 (en) 1974-12-13 1974-12-13 Orienting liquid crystals - by depositing org polymer layer on electrodes, and rubbing polymer layer in predefined direction

Publications (1)

Publication Number Publication Date
GB1526246A true GB1526246A (en) 1978-09-27

Family

ID=26218581

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4509975A Expired GB1526246A (en) 1974-10-31 1975-10-30 Method of aligning liquid crystalline materials and its application to helical nematic display cells

Country Status (3)

Country Link
JP (1) JPS5167149A (en)
DE (1) DE2548925A1 (en)
GB (1) GB1526246A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4469408A (en) * 1980-05-30 1984-09-04 Siemens Aktiengesellschaft Liquid-crystal display having orienting polymer with flexible bridges

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2683138B2 (en) * 1989-10-26 1997-11-26 アルプス電気株式会社 Method of rubbing alignment treatment for liquid crystal display device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4469408A (en) * 1980-05-30 1984-09-04 Siemens Aktiengesellschaft Liquid-crystal display having orienting polymer with flexible bridges

Also Published As

Publication number Publication date
DE2548925A1 (en) 1976-05-13
JPS5167149A (en) 1976-06-10

Similar Documents

Publication Publication Date Title
JPS5227654A (en) Electrooptical cell
GB1475433A (en) Liquid crystal display device
JPS5683718A (en) Liquid crystal display element
MY102915A (en) Liquid crystal devices.
JPS5697318A (en) Liquid-crystal display element
MY102698A (en) Smectic liquid crystal devices.
GB1526246A (en) Method of aligning liquid crystalline materials and its application to helical nematic display cells
GB1435356A (en) Electrically controlled display device
ES8705668A1 (en) Ferroelectric liquid crystal display cells.
JPS5588027A (en) Positive type guest-host type liquid crystal display element
JPS56111836A (en) Liquid-crystal display element
CA1089063A (en) Surface orientated liquid crystal display devices
JPS5355047A (en) Liquid crystal color display device
JPS5770522A (en) Liquid crystal display panel
JPS6278530A (en) Liquid crystal display unit
JPS64516A (en) Liquid crystal element
JPS5792312A (en) Liquid crystal display element
JPS5670527A (en) Liquid-crystal display element
JPS5442163A (en) Liquid crystal display device
JPS5781238A (en) Liquid crystal display device
JPS5220849A (en) Liquid crystal display method
JPS5380242A (en) Display device
JPS5550222A (en) Liquid crystal sandwiching device
JPS5778029A (en) Liquid crystal display device
JPS5268429A (en) Liquid crystal display device

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee