CA976267A - Method for changing the transparency of a liquid crystal cell - Google Patents

Method for changing the transparency of a liquid crystal cell

Info

Publication number
CA976267A
CA976267A CA148,292A CA148292A CA976267A CA 976267 A CA976267 A CA 976267A CA 148292 A CA148292 A CA 148292A CA 976267 A CA976267 A CA 976267A
Authority
CA
Canada
Prior art keywords
transparency
changing
liquid crystal
crystal cell
cell
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.)
Expired
Application number
CA148,292A
Other languages
English (en)
Other versions
CA148292S (en
Inventor
Masahide Tsukamoto
Tetsuro Ohtsuka
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Application granted granted Critical
Publication of CA976267A publication Critical patent/CA976267A/en
Expired 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
    • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00—Liquid crystal materials
    • C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
    • C09K19/42—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40
    • C09K19/50—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40 containing steroidal liquid crystal compounds
    • 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
    • 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
    • G02F1/13756—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 selectively assuming a light-scattering state
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S359/00—Optical: systems and elements
    • Y10S359/90—Methods

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Nonlinear Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Liquid Crystal (AREA)
  • Liquid Crystal Substances (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
CA148,292A 1971-07-29 1972-07-31 Method for changing the transparency of a liquid crystal cell Expired CA976267A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP46057365A JPS5114433B1 (xx) 1971-07-29 1971-07-29

Publications (1)

Publication Number Publication Date
CA976267A true CA976267A (en) 1975-10-14

Family

ID=13053539

Family Applications (1)

Application Number Title Priority Date Filing Date
CA148,292A Expired CA976267A (en) 1971-07-29 1972-07-31 Method for changing the transparency of a liquid crystal cell

Country Status (7)

Country Link
US (1) US3781088A (xx)
JP (1) JPS5114433B1 (xx)
CA (1) CA976267A (xx)
DE (1) DE2237997C3 (xx)
FR (1) FR2147313B1 (xx)
GB (1) GB1400495A (xx)
NL (1) NL176399C (xx)

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3960749A (en) * 1971-02-09 1976-06-01 International Liquid Xtal Company Liquid-crystal mixtures for use in liquid-crystal displays
DE2222974C3 (de) * 1972-05-10 1978-06-01 Siemens Ag, 1000 Berlin Und 8000 Muenchen Bildspeicherschirm mit einer Mischung aus cholesterischen und nematischen Flüssigkristallen
JPS5229716B2 (xx) * 1972-06-07 1977-08-03
US4011173A (en) * 1972-08-03 1977-03-08 Merck Patent Gesellschaft Mit Beschrankter Haftung Modified nematic mixtures with positive dielectric anisotropy
US3984343A (en) * 1972-09-29 1976-10-05 General Electric Company Liquid crystal mixtures with selectively variable dielectric anisotropies
JPS562115B2 (xx) * 1973-03-13 1981-01-17
JPS49110581A (xx) * 1973-02-23 1974-10-21
US3837730A (en) * 1973-11-28 1974-09-24 Bell Telephone Labor Inc Matrix-addressed liquid crystal display
JPS5328102B2 (xx) * 1973-04-16 1978-08-12
DE2418703C3 (de) * 1973-04-24 1978-06-29 Dai Nippon Toryo K.K., Osaka (Japan) Nematische Flüssigkeitskristallmasse und deren Verwendung in elektrooptischen Elementen
US3979320A (en) * 1973-09-22 1976-09-07 Hodogaya Chemical Co., Ltd. Liquid crystal composition
US3977769A (en) * 1974-05-31 1976-08-31 Matsushita Electric Industrial Co., Ltd. Electro-optic device
DE2504564B2 (de) * 1974-06-07 1977-11-24 (+)p-alkoxy-p'-(2-methylbutyl)azoxybenzole und ein diese enthaltendes cholesterinisches fluessigkristallgemisch
US3973830A (en) * 1974-06-07 1976-08-10 Matsushita Electric Industrial Co., Ltd. Electro-optic device
US3975286A (en) * 1974-09-03 1976-08-17 Beckman Instruments, Inc. Low voltage actuated field effect liquid crystals compositions and method of synthesis
US4147651A (en) * 1974-09-03 1979-04-03 Beckman Instruments, Inc. Biphenyl based liquid crystal compositions
US4050814A (en) * 1974-12-24 1977-09-27 Rockwell International Corporation Programmable light control matrix device
GB1564032A (en) * 1975-11-18 1980-04-02 Citizen Watch Co Ltd Method and device fordriving liquid crystal display matrix
GB1576106A (en) * 1976-11-25 1980-10-01 Secr Defence Temperature compensated liquid crystal devices
US4097127A (en) * 1977-03-02 1978-06-27 Xerox Corporation Mixed liquid crystalline texture formation
JPS5462797A (en) * 1977-10-28 1979-05-21 Citizen Watch Co Ltd Liquid crystal color display device
US4385806A (en) * 1978-06-08 1983-05-31 Fergason James L Liquid crystal display with improved angle of view and response times
JPS5525592U (xx) * 1978-08-09 1980-02-19
DE3219503C2 (de) * 1982-05-25 1985-08-08 Ernst Leitz Wetzlar Gmbh, 6330 Wetzlar Vorrichtung zum selbsttätigen Fokussieren auf in optischen Geräten zu betrachtende Objekte
JPS59126492A (ja) * 1982-12-24 1984-07-21 Fujitsu Ltd 液晶組成物
DE3425584A1 (de) * 1984-07-11 1986-01-16 Merck Patent Gmbh, 6100 Darmstadt Optisches system mit einer fluessigkristallzelle, verfahren zu seinem betrieb und seine verwendung
DE3817946A1 (de) * 1988-05-27 1989-11-30 Bayerische Motoren Werke Ag Lichtdurchlaessige scheibe, insbesondere fuer das dach eines kraftfahrzeuges
CH676889A5 (xx) * 1988-09-16 1991-03-15 Asulab Sa
US5289301A (en) * 1992-06-12 1994-02-22 Boit, Inc. Liquid crystal color modulation displays with dyes of different orders and circuitry for providing modulated AC excitation voltage
EP2005734A1 (en) * 2006-03-31 2008-12-24 Koninklijke Philips Electronics N.V. Display apparatus with ambient light generation using switchable canvas
DE102013005743B4 (de) * 2013-04-05 2021-03-18 Fresenius Medical Care Deutschland Gmbh Vorrichtung und Verfahren zur Unterstützung der Bedienung von medizintechnischen Geräten
CN104503145B (zh) * 2014-12-24 2018-01-09 深圳市华星光电技术有限公司 一种提高正负性混合液晶响应时间的方法和装置

Also Published As

Publication number Publication date
DE2237997C3 (de) 1975-03-27
FR2147313B1 (xx) 1974-12-27
JPS5114433B1 (xx) 1976-05-10
NL7210472A (xx) 1973-01-31
FR2147313A1 (xx) 1973-03-09
GB1400495A (en) 1975-07-16
US3781088A (en) 1973-12-25
NL176399B (nl) 1984-11-01
DE2237997A1 (de) 1973-03-22
NL176399C (nl) 1985-04-01
DE2237997B2 (de) 1974-08-08

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