WO2007110582A3 - Rapid switching cholesteric liquid crystal based field sequential colour (fsc) illumination type lcd - Google Patents

Rapid switching cholesteric liquid crystal based field sequential colour (fsc) illumination type lcd Download PDF

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Publication number
WO2007110582A3
WO2007110582A3 PCT/GB2007/000915 GB2007000915W WO2007110582A3 WO 2007110582 A3 WO2007110582 A3 WO 2007110582A3 GB 2007000915 W GB2007000915 W GB 2007000915W WO 2007110582 A3 WO2007110582 A3 WO 2007110582A3
Authority
WO
WIPO (PCT)
Prior art keywords
colour
liquid crystal
fsc
field sequential
rapid switching
Prior art date
Application number
PCT/GB2007/000915
Other languages
French (fr)
Other versions
WO2007110582A2 (en
Inventor
Jan Frank Stromer
Stephen John Elston
Edward Peter Raynes
Original Assignee
Isis Innovation
Jan Frank Stromer
Stephen John Elston
Edward Peter Raynes
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 Isis Innovation, Jan Frank Stromer, Stephen John Elston, Edward Peter Raynes filed Critical Isis Innovation
Publication of WO2007110582A2 publication Critical patent/WO2007110582A2/en
Publication of WO2007110582A3 publication Critical patent/WO2007110582A3/en

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
    • G02F1/13718—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 a change of the texture state of a cholesteric liquid crystal
    • 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
    • G02F1/1334—Constructional arrangements; Manufacturing methods based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
    • G02F1/13345—Network or three-dimensional gels
    • 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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133621—Illuminating devices providing coloured light
    • G02F1/133622—Colour sequential illumination
    • 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
    • G02F1/13775—Polymer-stabilized liquid crystal layers
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/06—Details of flat display driving waveforms
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/06—Details of flat display driving waveforms
    • G09G2310/061—Details of flat display driving waveforms for resetting or blanking
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/021—Power management, e.g. power saving

Abstract

A rapid switching, low response time cholesteric active matrix liquid crystal device suitable for field sequential colour (FSC) illumination (also called colour sequential illumination) is disclosed. RGB LED light sources (9) in the backlight are switched in conjunction with the liquid crystal layer (4) to provide a colour display without colour filters. Alternatively a white! source can be used with colour filters. The liquid crystal layer is arranged between crossed! polarisers (5, 7). The arrangement blocks light in the homeotropic state (21). A display transmission state results on switching the layer from the homeotropic into at least one of a transient planar state (25), an unaligned planar state (27) and an aligned planar state (29). Driving schemes for achieving different grey scale and colour values are disclosed.
PCT/GB2007/000915 2006-03-29 2007-03-16 Rapid switching cholesteric liquid crystal based field sequential colour (fsc) illumination type lcd WO2007110582A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0606220.2 2006-03-29
GBGB0606220.2A GB0606220D0 (en) 2006-03-29 2006-03-29 A liquid crystal device and method of controlling such a device

Publications (2)

Publication Number Publication Date
WO2007110582A2 WO2007110582A2 (en) 2007-10-04
WO2007110582A3 true WO2007110582A3 (en) 2007-11-29

Family

ID=36424750

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2007/000915 WO2007110582A2 (en) 2006-03-29 2007-03-16 Rapid switching cholesteric liquid crystal based field sequential colour (fsc) illumination type lcd

Country Status (2)

Country Link
GB (1) GB0606220D0 (en)
WO (1) WO2007110582A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9135864B2 (en) 2010-05-14 2015-09-15 Dolby Laboratories Licensing Corporation Systems and methods for accurately representing high contrast imagery on high dynamic range display systems
US9864243B2 (en) 2010-05-14 2018-01-09 Dolby Laboratories Licensing Corporation High dynamic range displays using filterless LCD(s) for increasing contrast and resolution
JP5914530B2 (en) 2011-03-09 2016-05-11 ドルビー ラボラトリーズ ライセンシング コーポレイション High contrast grayscale and color display
US8547623B2 (en) 2011-11-22 2013-10-01 Sharp Kabushiki Kaisha Dual-mode electrowetting display device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1283435A2 (en) * 2001-08-07 2003-02-12 Eastman Kodak Company Gray scale and color cholesteric liquid crystal displays
US20050156839A1 (en) * 2001-11-02 2005-07-21 Webb Homer L. Field sequential display device and methods of fabricating same

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1283435A2 (en) * 2001-08-07 2003-02-12 Eastman Kodak Company Gray scale and color cholesteric liquid crystal displays
US20050156839A1 (en) * 2001-11-02 2005-07-21 Webb Homer L. Field sequential display device and methods of fabricating same

Also Published As

Publication number Publication date
GB0606220D0 (en) 2006-05-10
WO2007110582A2 (en) 2007-10-04

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