GB1473383A - Liquid crystal display device - Google Patents

Liquid crystal display device

Info

Publication number
GB1473383A
GB1473383A GB1608574A GB1608574A GB1473383A GB 1473383 A GB1473383 A GB 1473383A GB 1608574 A GB1608574 A GB 1608574A GB 1608574 A GB1608574 A GB 1608574A GB 1473383 A GB1473383 A GB 1473383A
Authority
GB
United Kingdom
Prior art keywords
parallel
molecules
wall
field
liquid crystal
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
GB1608574A
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.)
Rank Organization Ltd
Original Assignee
Rank Organization Ltd
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 Rank Organization Ltd filed Critical Rank Organization Ltd
Priority to GB1608574A priority Critical patent/GB1473383A/en
Priority to JP50044157A priority patent/JPS50144455A/ja
Priority to DE19752515976 priority patent/DE2515976A1/en
Publication of GB1473383A publication Critical patent/GB1473383A/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
    • G02F1/133—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
    • 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
    • G02F1/133734—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by obliquely evaporated films, e.g. Si or SiO2 films
    • 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
    • G02F1/13787—Hybrid-alignment cells
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Liquid Crystal (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

1473383 Controlling light RANK ORGANISATION Ltd 9 April 1975 [11 April 1974] 16085/74 Heading G2F In an electro-optic cell exhibiting variable optical rotatory power and comprising a layer of liquid crystal material with positive dielectric arisotropy between parallel walls, the liquid crystal material is mainly nematic but contains at least some cholesteric component in order to provide a twisted molecular structure with a uniform sense of twist throughout in the absence of an electric field, and the molecules adjacent each wall are uniformly inclined thereto but at a different angle for each wall such that no place intermediate and parallel to the walls consists of molecules aligned parallel to the walls, whereby when a field is applied across the thickness of the layer all the liquid crystal molecules are rotated in the same sense to the parallel with the field. The formation of domains with opposite twist in the absence of a field, and of domains of anti-parallel molecules with different birefringence in the presence of a field which leads to inhomogeneity colour fringes in a display when the cell is between polarizers, is thereby avoided. As described, the molecules are caused to lie at 20-30 degrees to one wall and substantially parallel to the other wall by vapour deposition on the wall surfaces at 5 and 30 degrees respectively. The cholesteric component may be cholesteryl nonanoate, 0À25 wt. per cent based on the nematic component.
GB1608574A 1974-04-11 1974-04-11 Liquid crystal display device Expired GB1473383A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB1608574A GB1473383A (en) 1974-04-11 1974-04-11 Liquid crystal display device
JP50044157A JPS50144455A (en) 1974-04-11 1975-04-11
DE19752515976 DE2515976A1 (en) 1974-04-11 1975-04-11 OPTICAL DISPLAY DEVICE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1608574A GB1473383A (en) 1974-04-11 1974-04-11 Liquid crystal display device

Publications (1)

Publication Number Publication Date
GB1473383A true GB1473383A (en) 1977-05-11

Family

ID=10070913

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1608574A Expired GB1473383A (en) 1974-04-11 1974-04-11 Liquid crystal display device

Country Status (3)

Country Link
JP (1) JPS50144455A (en)
DE (1) DE2515976A1 (en)
GB (1) GB1473383A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55127520A (en) * 1979-03-26 1980-10-02 Citizen Watch Co Ltd Liquid crystal display element
JPS57182722A (en) * 1981-05-07 1982-11-10 Aiwa Co Ltd Liquid crystal display element
JPH0718995B2 (en) * 1985-02-19 1995-03-06 キヤノン株式会社 Liquid crystal element
US4726659A (en) * 1986-02-24 1988-02-23 Rca Corporation Display device having different alignment layers
JP2523811B2 (en) * 1988-09-02 1996-08-14 株式会社日立製作所 Liquid crystal light modulator
DE3911358A1 (en) * 1989-04-07 1990-10-11 Nokia Unterhaltungselektronik LIQUID CRYSTAL CELL WITH HIGH TWIST

Also Published As

Publication number Publication date
DE2515976A1 (en) 1975-10-23
JPS50144455A (en) 1975-11-20

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Legal Events

Date Code Title Description
PS Patent sealed
48R Reference inserted (sect. 8/1949)
SP Amendment (slips) printed
PCNP Patent ceased through non-payment of renewal fee