GB2007865A - Liquid display devices - Google Patents

Liquid display devices

Info

Publication number
GB2007865A
GB2007865A GB7842126A GB7842126A GB2007865A GB 2007865 A GB2007865 A GB 2007865A GB 7842126 A GB7842126 A GB 7842126A GB 7842126 A GB7842126 A GB 7842126A GB 2007865 A GB2007865 A GB 2007865A
Authority
GB
United Kingdom
Prior art keywords
followed
baking
slide surface
display devices
homeotropic alignment
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.)
Withdrawn
Application number
GB7842126A
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 GB7842126A priority Critical patent/GB2007865A/en
Publication of GB2007865A publication Critical patent/GB2007865A/en
Withdrawn legal-status Critical Current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
    • 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
    • G02F1/133—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
    • G02F1/133742—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers for homeotropic alignment

Landscapes

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

Abstract

Liquid crystal display cell substrates for providing a 25 DEG to 90 DEG out of plane tilted alignment are obtained by treatment to give a homeotropic alignment followed by oblique evaporation of e.g. silicon monoxide, magnesium fluoride, or silicon dioxide, onto the slide surface. The evaporation angle is less than 15 DEG to the slide surface and is typically 5 DEG . Increasing the thickness of the evaporated material lowers the final tilt angle from 90 DEG toward 25 DEG . The homeotropic alignment may be provided by plasma cleaning, immersion in chromosulphuric acid and followed by baking, or detergent cleaning with ultrasonic agitation followed by baking.
GB7842126A 1977-11-07 1978-10-25 Liquid display devices Withdrawn GB2007865A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7842126A GB2007865A (en) 1977-11-07 1978-10-25 Liquid display devices

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB4628377 1977-11-07
GB7842126A GB2007865A (en) 1977-11-07 1978-10-25 Liquid display devices

Publications (1)

Publication Number Publication Date
GB2007865A true GB2007865A (en) 1979-05-23

Family

ID=26265782

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7842126A Withdrawn GB2007865A (en) 1977-11-07 1978-10-25 Liquid display devices

Country Status (1)

Country Link
GB (1) GB2007865A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2129578A (en) * 1982-10-20 1984-05-16 Secr Defence Liquid crystal mirror displays
WO1989008862A1 (en) * 1988-03-14 1989-09-21 Hughes Aircraft Company Light valves with positive dielectric anisotropy liquid crystal and highly tilted off-perpendicular surface alignment, and associated operating method
US4897290A (en) * 1986-09-26 1990-01-30 Konishiroku Photo Industry Co., Ltd. Method for manufacturing the substrate for liquid crystal display
WO1995000879A1 (en) * 1993-06-21 1995-01-05 Case Western Reserve University Cholesteric liquid crystal devices
US6327010B1 (en) 1992-02-03 2001-12-04 Merck Patent Gesellschaft Mit Beschrankter Haftung Electrooptical system
USRE37509E1 (en) 1986-04-03 2002-01-15 The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britian And Northern Ireland Smectic liquid crystal devices

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2129578A (en) * 1982-10-20 1984-05-16 Secr Defence Liquid crystal mirror displays
US4589735A (en) * 1982-10-20 1986-05-20 The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Cholesteric liquid crystal mirror with safety features
USRE37509E1 (en) 1986-04-03 2002-01-15 The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britian And Northern Ireland Smectic liquid crystal devices
US4897290A (en) * 1986-09-26 1990-01-30 Konishiroku Photo Industry Co., Ltd. Method for manufacturing the substrate for liquid crystal display
WO1989008862A1 (en) * 1988-03-14 1989-09-21 Hughes Aircraft Company Light valves with positive dielectric anisotropy liquid crystal and highly tilted off-perpendicular surface alignment, and associated operating method
US6327010B1 (en) 1992-02-03 2001-12-04 Merck Patent Gesellschaft Mit Beschrankter Haftung Electrooptical system
WO1995000879A1 (en) * 1993-06-21 1995-01-05 Case Western Reserve University Cholesteric liquid crystal devices
US5477358A (en) * 1993-06-21 1995-12-19 Case Western Reserve University Chiral nematic liquid crystal display with homeotropic alignment and negative dielectric anisotropy
US5602662A (en) * 1993-06-21 1997-02-11 Case Western Reserve University Cholesteric liquid crystal devices

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)