CA2100333A1 - Display having light scattering electro-optical element - Google Patents

Display having light scattering electro-optical element

Info

Publication number
CA2100333A1
CA2100333A1 CA002100333A CA2100333A CA2100333A1 CA 2100333 A1 CA2100333 A1 CA 2100333A1 CA 002100333 A CA002100333 A CA 002100333A CA 2100333 A CA2100333 A CA 2100333A CA 2100333 A1 CA2100333 A1 CA 2100333A1
Authority
CA
Canada
Prior art keywords
display
optical element
light scattering
state
incident light
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.)
Granted
Application number
CA002100333A
Other languages
French (fr)
Other versions
CA2100333C (en
Inventor
J. Phillip Jones
Akira Tomita
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.)
Raychem Corp
Original Assignee
J. Phillip Jones
Akira Tomita
Raychem Corporation
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 J. Phillip Jones, Akira Tomita, Raychem Corporation filed Critical J. Phillip Jones
Publication of CA2100333A1 publication Critical patent/CA2100333A1/en
Application granted granted Critical
Publication of CA2100333C publication Critical patent/CA2100333C/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G02F1/1334—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
    • 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
    • G02F1/13706—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 the liquid crystal having positive dielectric anisotropy
    • 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
    • G02F2202/00—Materials and properties
    • G02F2202/04—Materials and properties dye
    • G02F2202/043—Materials and properties dye pleochroic
    • 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
    • G02F2203/00—Function characteristic
    • G02F2203/03—Function characteristic scattering

Abstract

A display having a first electrode means (6); a second electrode means (5);
and a display medium (2) positioned between the first and second electrode means (6 and 5), which display medium (2) contains a pleochroic dye, is switchable between a first state in which incident light is substantially absorbed by the pleochroic dye and a second state in which the amount of such ab-sorption is substantially reduced, and is capable of scattering incident light with a scattering half angle between about 5 and about 40 degrees when the display medium (2) is in its second state, while permetting at least 10 % of the incident light to be transmitted.
CA002100333A 1991-02-11 1992-01-21 Display having light scattering electro-optical element Expired - Lifetime CA2100333C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US07/653,564 US5136403A (en) 1991-02-11 1991-02-11 Display having light scattering electro-optical element
US653,564 1991-02-11
PCT/US1992/000459 WO1992014181A1 (en) 1991-02-11 1992-01-21 Display having light scattering electro-optical element

Publications (2)

Publication Number Publication Date
CA2100333A1 true CA2100333A1 (en) 1992-08-12
CA2100333C CA2100333C (en) 2002-05-28

Family

ID=24621396

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002100333A Expired - Lifetime CA2100333C (en) 1991-02-11 1992-01-21 Display having light scattering electro-optical element

Country Status (8)

Country Link
US (1) US5136403A (en)
EP (1) EP0571459B1 (en)
JP (1) JP3127302B2 (en)
KR (1) KR930703623A (en)
AT (1) ATE166468T1 (en)
CA (1) CA2100333C (en)
DE (1) DE69225584T2 (en)
WO (1) WO1992014181A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2801102B2 (en) * 1991-02-01 1998-09-21 富士通株式会社 Liquid crystal display
EP0506176B1 (en) * 1991-03-26 1996-02-07 Koninklijke Philips Electronics N.V. Light-scattering element
JPH05113518A (en) * 1991-10-21 1993-05-07 Fujitsu Ltd Optical fiber coupling lens system
US5559615A (en) * 1993-10-07 1996-09-24 Casio Computer Co., Ltd. Polymer dispersed liquid crystal display device
JPH07253621A (en) * 1994-03-16 1995-10-03 Fujitsu Ltd Screen and projection type display device using the same
US5835174A (en) * 1995-10-12 1998-11-10 Rohm And Haas Company Droplets and particles containing liquid crystal and films and apparatus containing the same
US6271898B1 (en) 1996-09-19 2001-08-07 Rohm And Haas Company Particles and droplets containing liquid domains and method for forming in an aqueous medium
US5831698A (en) * 1996-08-20 1998-11-03 International Business Machines Corporation Electrically variable diffuser

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50107958A (en) * 1974-01-31 1975-08-25
JPS535996B2 (en) * 1974-03-11 1978-03-03
US3905682A (en) * 1974-06-14 1975-09-16 Rca Corp Liquid crystal devices of improved contrast
JPS535996A (en) * 1976-07-06 1978-01-19 Seiko Epson Corp Reflecting plate for liquid crystal display device
JPS5694386A (en) * 1979-12-27 1981-07-30 Suwa Seikosha Kk Liquiddcrystal display unit
US4606611A (en) * 1981-09-16 1986-08-19 Manchester R & D Partnership Enhanced scattering in voltage sensitive encapsulated liquid crystal
US4707080A (en) * 1981-09-16 1987-11-17 Manchester R & D Partnership Encapsulated liquid crystal material, apparatus and method
US4435047A (en) * 1981-09-16 1984-03-06 Manchester R & D Partnership Encapsulated liquid crystal and method
US4591233A (en) * 1983-03-21 1986-05-27 Manchester R & D Partnership Enhanced scattering in voltage sensitive encapsulated liquid crystal with spaced apart absorber
JP2721497B2 (en) * 1984-03-19 1998-03-04 ケント・ステート・ユニバーシティ Method for producing light modulating substance
US4992201A (en) * 1984-03-20 1991-02-12 Taliq Corporation Latex entrapped ncap liquid crystal composition, method and apparatus
US4832458A (en) * 1984-08-28 1989-05-23 Talig Corporation Display for contrast enhancement
US4671618A (en) * 1986-05-22 1987-06-09 Wu Bao Gang Liquid crystalline-plastic material having submillisecond switch times and extended memory
US4685771A (en) * 1985-09-17 1987-08-11 West John L Liquid crystal display material comprising a liquid crystal dispersion in a thermoplastic resin
US4673255A (en) * 1986-05-22 1987-06-16 John West Method of controlling microdroplet growth in polymeric dispersed liquid crystal
US4890902A (en) * 1985-09-17 1990-01-02 Kent State University Liquid crystal light modulating materials with selectable viewing angles
US4991940A (en) * 1988-01-25 1991-02-12 Taliq Corporation Gain reflector-liquid crystal display
EP0394410B1 (en) * 1988-09-28 1995-01-11 Raychem Corporation Enhanced backscattering and light transmission in a guest host display
US5156452A (en) * 1989-07-20 1992-10-20 Paul Drzaic Encapsulated liquid crystal apparatus having low off-axis haze and operable by a sine-wave power source

Also Published As

Publication number Publication date
JP3127302B2 (en) 2001-01-22
JPH06505345A (en) 1994-06-16
CA2100333C (en) 2002-05-28
DE69225584D1 (en) 1998-06-25
US5136403A (en) 1992-08-04
KR930703623A (en) 1993-11-30
DE69225584T2 (en) 1998-09-10
WO1992014181A1 (en) 1992-08-20
ATE166468T1 (en) 1998-06-15
EP0571459A1 (en) 1993-12-01
EP0571459A4 (en) 1994-01-12
EP0571459B1 (en) 1998-05-20

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Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry