GB1410161A - Apparatus comprinsing an electro-optical device comprising a layer of nematic liquid crystal material - Google Patents

Apparatus comprinsing an electro-optical device comprising a layer of nematic liquid crystal material

Info

Publication number
GB1410161A
GB1410161A GB30574A GB30574A GB1410161A GB 1410161 A GB1410161 A GB 1410161A GB 30574 A GB30574 A GB 30574A GB 30574 A GB30574 A GB 30574A GB 1410161 A GB1410161 A GB 1410161A
Authority
GB
United Kingdom
Prior art keywords
liquid crystal
electro
butylphenyl
nematic liquid
comprinsing
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
GB30574A
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries 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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1410161A publication Critical patent/GB1410161A/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
    • G02F1/137—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
    • G02F1/139—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 orientation effects in which the liquid crystal remains transparent
    • G02F1/1392—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 orientation effects in which the liquid crystal remains transparent using a field-induced sign-reversal of the dielectric anisotropy

Abstract

1410161 Liquid crystal compositions PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 3 Jan 1974 [12 Jan 1973] 00305/74 Heading C4X [Also in Divisions H3- H5] A nematic liquid crystal composition comprises a mixture of p-methylphenyl-p-n-butylbenzoate; p-n-butylphenyl-p-methoxybenzoate; p - n - butylphenyl - p - (p - n - butylbenzoyloxy)-benzoate; and p-n-butylphenyl-p-(p-methoxybenzoyloxy)benzoate. A second, ternary, nematic composition comprises a mixture of benzylidene-p-cyanoanilines substituted in the p<SP>1</SP> position with n-butoxy-; n-hexoxy-; and nheptylcarboxyloxy-groups respectively. Both mixtures have a dielectric anisotropy which is positive below a critical frequency and then becomes negative, and find use in electro-optic display devices (see Divisions H3-H5).
GB30574A 1973-01-12 1974-01-03 Apparatus comprinsing an electro-optical device comprising a layer of nematic liquid crystal material Expired GB1410161A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7300452A NL7300452A (en) 1973-01-12 1973-01-12

Publications (1)

Publication Number Publication Date
GB1410161A true GB1410161A (en) 1975-10-15

Family

ID=19818004

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30574A Expired GB1410161A (en) 1973-01-12 1974-01-03 Apparatus comprinsing an electro-optical device comprising a layer of nematic liquid crystal material

Country Status (6)

Country Link
JP (1) JPS5311463B2 (en)
CH (1) CH557041A (en)
FR (1) FR2214135B1 (en)
GB (1) GB1410161A (en)
IT (1) IT1004691B (en)
NL (1) NL7300452A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2119110A (en) * 1979-05-29 1983-11-09 Texas Instruments Inc Liquid crystal display cell
GB2198255A (en) * 1986-11-12 1988-06-08 Gen Electric Plc Optical switch

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5412069B2 (en) * 1973-07-31 1979-05-19
US4231068A (en) * 1977-06-15 1980-10-28 The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Optical screens
JPS57112793A (en) * 1980-12-29 1982-07-13 Suwa Seikosha Kk Liquid-crystal display device for automobile

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2119110A (en) * 1979-05-29 1983-11-09 Texas Instruments Inc Liquid crystal display cell
GB2198255A (en) * 1986-11-12 1988-06-08 Gen Electric Plc Optical switch
GB2198255B (en) * 1986-11-12 1990-05-23 Gen Electric Plc Optical switch

Also Published As

Publication number Publication date
CH557041A (en) 1974-12-13
DE2364641A1 (en) 1974-07-18
DE2364641B2 (en) 1977-04-21
AU6434074A (en) 1975-07-10
NL7300452A (en) 1974-07-16
IT1004691B (en) 1976-07-20
JPS5311463B2 (en) 1978-04-21
FR2214135B1 (en) 1976-11-26
FR2214135A1 (en) 1974-08-09
JPS49105553A (en) 1974-10-05

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee