FR2146277B1 - - Google Patents

Info

Publication number
FR2146277B1
FR2146277B1 FR7225444A FR7225444A FR2146277B1 FR 2146277 B1 FR2146277 B1 FR 2146277B1 FR 7225444 A FR7225444 A FR 7225444A FR 7225444 A FR7225444 A FR 7225444A FR 2146277 B1 FR2146277 B1 FR 2146277B1
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
FR7225444A
Other languages
French (fr)
Other versions
FR2146277A1 (en
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.)
F Hoffmann La Roche AG
Original Assignee
F Hoffmann La Roche AG
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 F Hoffmann La Roche AG filed Critical F Hoffmann La Roche AG
Publication of FR2146277A1 publication Critical patent/FR2146277A1/fr
Application granted granted Critical
Publication of FR2146277B1 publication Critical patent/FR2146277B1/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 
    • G02F1/07—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 electro-optical liquids exhibiting Kerr effect
    • 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
    • C09K19/06—Non-steroidal liquid crystal compounds
    • C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
    • C09K19/10—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings
    • C09K19/22—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a chain containing carbon and nitrogen atoms as chain links, e.g. Schiff bases
FR7225444A 1971-07-16 1972-07-13 Expired FR2146277B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1048271A CH540500A (en) 1971-07-16 1971-07-16 Electro-optical light control cell

Publications (2)

Publication Number Publication Date
FR2146277A1 FR2146277A1 (en) 1973-03-02
FR2146277B1 true FR2146277B1 (en) 1976-08-06

Family

ID=4363711

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7225444A Expired FR2146277B1 (en) 1971-07-16 1972-07-13

Country Status (7)

Country Link
CA (2) CA971259A (en)
CH (1) CH540500A (en)
DD (1) DD99449A5 (en)
DE (1) DE2234522A1 (en)
FR (1) FR2146277B1 (en)
GB (1) GB1395795A (en)
NL (1) NL7209780A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4058477A (en) * 1972-02-23 1977-11-15 Hoffmann-La Roche Inc. Liquid crystal Schiffs bases
US4058478A (en) * 1972-02-23 1977-11-15 Hoffmann-La Roche Inc. Liquid crystal esters
CH577178A5 (en) * 1973-04-04 1976-06-30 Hoffmann La Roche
US4061587A (en) * 1973-12-17 1977-12-06 Hoffmann-La Roche Inc. Liquid crystalline cinnamic acid esters
GB8610681D0 (en) * 1986-05-01 1986-06-04 Secr Defence Electro-optical devices
DE10241301A1 (en) * 2002-09-04 2004-03-18 Merck Patent Gmbh Electrooptic light control element and display and medium for television and computer screens has temperature driven control mechanism

Also Published As

Publication number Publication date
NL7209780A (en) 1973-01-18
CA971259A (en) 1975-07-15
DD99449A5 (en) 1973-08-05
GB1395795A (en) 1975-05-29
CH540500A (en) 1973-08-15
DE2234522A1 (en) 1973-01-25
CA971260A (en) 1975-07-15
FR2146277A1 (en) 1973-03-02

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Legal Events

Date Code Title Description
ST Notification of lapse