CH609368A5 - Liquid crystal composition, process for preparing such a composition and its use in display devices - Google Patents

Liquid crystal composition, process for preparing such a composition and its use in display devices

Info

Publication number
CH609368A5
CH609368A5 CH1136175A CH1136175A CH609368A5 CH 609368 A5 CH609368 A5 CH 609368A5 CH 1136175 A CH1136175 A CH 1136175A CH 1136175 A CH1136175 A CH 1136175A CH 609368 A5 CH609368 A5 CH 609368A5
Authority
CH
Switzerland
Prior art keywords
liquid crystal
nlc
properties
nematic
composition
Prior art date
Application number
CH1136175A
Inventor
Chan S Oh
Original Assignee
Beckman Instruments 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 US05/502,659 external-priority patent/US4147651A/en
Priority claimed from US05/502,658 external-priority patent/US3975286A/en
Application filed by Beckman Instruments Inc filed Critical Beckman Instruments Inc
Publication of CH609368A5 publication Critical patent/CH609368A5/en

Links

Classifications

    • 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
    • C09K19/46—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40 containing esters

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Liquid Crystal Substances (AREA)

Abstract

Compound composition of nematic liquid crystals which have satisfactory nematic properties for use in field-effect liquid-crystal display devices. These compositions consist of a mixture of: 1) at least one base substance of the biphenyl type forming a nematic liquid crystal (base NLC); 2) at least one other substance forming a nematic liquid crystal of type other than biphenyl, called nonbiphenyl (additional NLC) supplementing the operating field effect properties of 1) and present in sufficient concentration to impart improved electrooptical properties to the mixture, and 3) at least one second substance forming a nematic liquid crystal of the nonbiphenyl type which is relatively more compatible with the base NLC (biphenyl) than with the additional NLC and present in sufficient concentration for the resulting ternary mixture to have satisfactory nematic properties, giving a liquid-crystal display device of higher quality.
CH1136175A 1974-09-03 1975-09-02 Liquid crystal composition, process for preparing such a composition and its use in display devices CH609368A5 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US05/502,659 US4147651A (en) 1974-09-03 1974-09-03 Biphenyl based liquid crystal compositions
US05/502,658 US3975286A (en) 1974-09-03 1974-09-03 Low voltage actuated field effect liquid crystals compositions and method of synthesis
US05/581,009 US4083797A (en) 1974-09-03 1975-05-27 Nematic liquid crystal compositions

Publications (1)

Publication Number Publication Date
CH609368A5 true CH609368A5 (en) 1979-02-28

Family

ID=27414212

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1136175A CH609368A5 (en) 1974-09-03 1975-09-02 Liquid crystal composition, process for preparing such a composition and its use in display devices

Country Status (5)

Country Link
JP (1) JPS5152383A (en)
CH (1) CH609368A5 (en)
DE (1) DE2538865A1 (en)
FR (1) FR2283941A1 (en)
GB (1) GB1527727A (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4137192A (en) * 1974-01-25 1979-01-30 Canon Kabushiki Kaisha Liquid crystalline composition
GB1501718A (en) * 1974-12-23 1978-02-22 Suwa Seikosha Kk Nematic liquid crystal material
JPS5257139A (en) * 1975-11-06 1977-05-11 Dainippon Toryo Kk Production of cairal nematic compound and liquid crystal composition
US4138358A (en) * 1976-02-09 1979-02-06 Temple University Liquid crystal compositions
FR2356173A1 (en) * 1976-06-21 1978-01-20 Gen Electric PROCESS FOR IMPROVING THE DESCENT TIME OF A DISPLAY DEVICE COMPOSED OF NEMATIC PROPELLERED LIQUID CRYSTALS
GB1587819A (en) * 1976-08-13 1981-04-08 Secr Defence Aromatic diester liquid crystal materials
US4113647A (en) * 1976-08-13 1978-09-12 The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Liquid crystalline materials
GB1596012A (en) * 1976-08-16 1981-08-19 Secr Defence Optically active liquid crystal materials and liquid crystal devices containing them
US4208106A (en) * 1976-09-27 1980-06-17 Beckman Instruments, Inc. Fluorescent displays
US4141853A (en) * 1976-10-06 1979-02-27 Sharp Kabushiki Kaisha Liquid crystal material
JPS5368687A (en) * 1976-11-30 1978-06-19 Sharp Corp Liquid crystal composition
JPS5345682A (en) * 1976-10-06 1978-04-24 Sharp Corp Liquid crystal composition
US4120567A (en) * 1977-02-11 1978-10-17 Rca Corporation Electro-optic device
GB1603076A (en) * 1977-04-05 1981-11-18 Secr Defence Esters of (+)-4-(2'-methylbutyl)phenol and their use as liquid crystal materials
JPS5450490A (en) * 1977-09-29 1979-04-20 Sharp Corp Liquid crystal composition
GB2009219B (en) * 1977-11-02 1982-04-28 Secr Defence Liquid ctystal material mixtures and devices incorporating such mixtures
US4176918A (en) * 1977-11-14 1979-12-04 Temple University Fluorescent liquid crystal display
US4203862A (en) * 1978-12-22 1980-05-20 Timex Corporation Liquid crystal composition
US4309304A (en) * 1979-11-01 1982-01-05 Exxon Research & Engineering Co. Liquid crystal compositions for multiplexed displays
US4328116A (en) * 1979-11-01 1982-05-04 Minnesota Mining And Manufacturing Company Liquid crystal compositions for multiplexed displays

Also Published As

Publication number Publication date
DE2538865A1 (en) 1976-03-11
FR2283941A1 (en) 1976-04-02
JPS5152383A (en) 1976-05-08
FR2283941B1 (en) 1980-06-06
GB1527727A (en) 1978-10-11

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Legal Events

Date Code Title Description
PL Patent ceased