GB2007865A - Liquid display devices - Google Patents
Liquid display devicesInfo
- 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- Withdrawn
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.
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)
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 |
-
1978
- 1978-10-25 GB GB7842126A patent/GB2007865A/en not_active Withdrawn
Cited By (9)
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) |