WO2004072713A3 - A high contrast liquid crystal dispersion system cell and transmissive device - Google Patents

A high contrast liquid crystal dispersion system cell and transmissive device Download PDF

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Publication number
WO2004072713A3
WO2004072713A3 PCT/US2004/003550 US2004003550W WO2004072713A3 WO 2004072713 A3 WO2004072713 A3 WO 2004072713A3 US 2004003550 W US2004003550 W US 2004003550W WO 2004072713 A3 WO2004072713 A3 WO 2004072713A3
Authority
WO
WIPO (PCT)
Prior art keywords
liquid crystal
scattering medium
light scattering
high contrast
dispersion system
Prior art date
Application number
PCT/US2004/003550
Other languages
French (fr)
Other versions
WO2004072713A2 (en
Inventor
James John Lupino
Homer Lee Webb
Original Assignee
James John Lupino
Homer Lee Webb
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 James John Lupino, Homer Lee Webb filed Critical James John Lupino
Publication of WO2004072713A2 publication Critical patent/WO2004072713A2/en
Publication of WO2004072713A3 publication Critical patent/WO2004072713A3/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
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or 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
    • G02F1/133—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
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3102—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators
    • H04N9/3111—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying the colours sequentially, e.g. by using sequentially activated light sources
    • 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Liquid Crystal (AREA)

Abstract

A projection system. The system includes a first polarizer (102); and an electro-optical light scattering medium (103) disposed in a transmissive path between the first polarizer and a light source (108, 109, 110). A plane of polarization of the first polarizer is substantially parallel to a plane of polarization of the light source. The light scattering medium is switchable from a first state to a second state in response to an applied electrical field. The electro-optical light scattering medium in the first state forms a bright region in the projection display and in the second state forms a dark region in the projection display. The transmission path makes a single pass through the light scattering medium.
PCT/US2004/003550 2003-02-10 2004-02-10 A high contrast liquid crystal dispersion system cell and transmissive device WO2004072713A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US44630403P 2003-02-10 2003-02-10
US60/446,304 2003-02-10

Publications (2)

Publication Number Publication Date
WO2004072713A2 WO2004072713A2 (en) 2004-08-26
WO2004072713A3 true WO2004072713A3 (en) 2006-10-12

Family

ID=32869485

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/003550 WO2004072713A2 (en) 2003-02-10 2004-02-10 A high contrast liquid crystal dispersion system cell and transmissive device

Country Status (1)

Country Link
WO (1) WO2004072713A2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004043410B3 (en) 2004-09-02 2005-11-10 Deutsches Zentrum für Luft- und Raumfahrt e.V. Color optical inspection apparatus for examining processes with light deflection in transparent media having at least one light source in the form of a light emitting diode
US7686453B2 (en) * 2005-12-19 2010-03-30 3M Innovative Properties Company High contrast liquid crystal display and projection system using same
US7475991B2 (en) 2005-12-22 2009-01-13 3M Innovative Properties Company Polarizing beamsplitter assembly
US7673993B2 (en) 2005-12-22 2010-03-09 3M Innovative Properties Company Projection system using reflective polarizers
US11340487B2 (en) 2020-04-15 2022-05-24 Wuhan China Star Optoelectronics Technology Co., Ltd. Display device
CN111352268A (en) * 2020-04-15 2020-06-30 武汉华星光电技术有限公司 Display device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3708712A (en) * 1969-09-29 1973-01-02 Rca Corp Intelligence-handling device having means for limiting induced electrostatic potential
US6513937B1 (en) * 2000-09-19 2003-02-04 Rockwell Collins, Inc. Apparatus and method for integrating light from multiple light sources
US6724452B1 (en) * 1997-06-12 2004-04-20 Fujitsu Display Technologies Corporation Vertically aligned (VA) liquid crystal display device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3708712A (en) * 1969-09-29 1973-01-02 Rca Corp Intelligence-handling device having means for limiting induced electrostatic potential
US6724452B1 (en) * 1997-06-12 2004-04-20 Fujitsu Display Technologies Corporation Vertically aligned (VA) liquid crystal display device
US6513937B1 (en) * 2000-09-19 2003-02-04 Rockwell Collins, Inc. Apparatus and method for integrating light from multiple light sources

Also Published As

Publication number Publication date
WO2004072713A2 (en) 2004-08-26

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