FR2220804B1 - - Google Patents

Info

Publication number
FR2220804B1
FR2220804B1 FR7407137A FR7407137A FR2220804B1 FR 2220804 B1 FR2220804 B1 FR 2220804B1 FR 7407137 A FR7407137 A FR 7407137A FR 7407137 A FR7407137 A FR 7407137A FR 2220804 B1 FR2220804 B1 FR 2220804B1
Authority
FR
France
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
FR7407137A
Other languages
French (fr)
Other versions
FR2220804A1 (es
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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
Priority claimed from US00339368A external-priority patent/US3833287A/en
Priority claimed from US00419613A external-priority patent/US3837730A/en
Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of FR2220804A1 publication Critical patent/FR2220804A1/fr
Application granted granted Critical
Publication of FR2220804B1 publication Critical patent/FR2220804B1/fr
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
    • G02F1/137—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
    • G02F1/13731—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 field-induced phase transition
    • G02F1/13737—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 field-induced phase transition in liquid crystals doped with a pleochroic dye
    • 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
    • C09K19/52—Liquid crystal materials characterised by components which are not liquid crystals, e.g. additives with special physical aspect: solvents, solid particles
    • C09K19/58—Dopants or charge transfer agents
    • C09K19/586—Optically active dopants; chiral dopants
    • 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
    • C09K19/52—Liquid crystal materials characterised by components which are not liquid crystals, e.g. additives with special physical aspect: solvents, solid particles
    • C09K19/60—Pleochroic dyes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Liquid Crystal Substances (AREA)
FR7407137A 1973-03-08 1974-03-01 Expired FR2220804B1 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US00339368A US3833287A (en) 1973-03-08 1973-03-08 Guest-host liquid crystal device
US00419613A US3837730A (en) 1973-11-28 1973-11-28 Matrix-addressed liquid crystal display

Publications (2)

Publication Number Publication Date
FR2220804A1 FR2220804A1 (es) 1974-10-04
FR2220804B1 true FR2220804B1 (es) 1976-10-08

Family

ID=26991601

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7407137A Expired FR2220804B1 (es) 1973-03-08 1974-03-01

Country Status (4)

Country Link
JP (1) JPS6222153B2 (es)
DE (1) DE2410557C2 (es)
FR (1) FR2220804B1 (es)
GB (1) GB1464791A (es)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5638924B2 (es) * 1973-12-20 1981-09-09
GB1571496A (en) * 1976-05-04 1980-07-16 Standard Telephones Cables Ltd Cholesteric liquid crystal cells
CH614828GA3 (en) * 1976-06-16 1979-12-28 Liquid-crystal display with a guest/host liquid-crystal layer and method for producing this liquid-crystal display
FR2356173A1 (fr) * 1976-06-21 1978-01-20 Gen Electric Procede pour ameliorer le temps de descente d'un dispositif d'affichage a composition de cristaux liquides nematique en helice
DE2706405C3 (de) * 1977-02-15 1985-08-01 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V., 8000 Muenchen Anzeigeanordnung zur Darstellung von hellen Bildern vor dunklem Hintergrund
JPS53102055A (en) * 1977-02-18 1978-09-06 Toshiba Corp Liquid crystal color display element
CH629001A5 (fr) * 1978-02-06 1982-03-31 Ebauches Sa Cellule d'affichage electro-optique passif.
JPS5923328A (ja) * 1982-07-29 1984-02-06 Sharp Corp 液晶表示装置
GB2129954B (en) * 1982-10-22 1986-03-05 Stc Plc Liquid crystal display device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT946051B (it) * 1970-12-04 1973-05-21 Hoffmann La Roche Cellula ottica

Also Published As

Publication number Publication date
FR2220804A1 (es) 1974-10-04
DE2410557A1 (de) 1974-09-12
DE2410557C2 (de) 1984-08-30
JPS6222153B2 (es) 1987-05-15
GB1464791A (en) 1977-02-16
JPS49127645A (es) 1974-12-06

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Legal Events

Date Code Title Description
ST Notification of lapse