ES361304A1 - Liquid crystal display element having storage - Google Patents

Liquid crystal display element having storage

Info

Publication number
ES361304A1
ES361304A1 ES361304A ES361304A ES361304A1 ES 361304 A1 ES361304 A1 ES 361304A1 ES 361304 A ES361304 A ES 361304A ES 361304 A ES361304 A ES 361304A ES 361304 A1 ES361304 A1 ES 361304A1
Authority
ES
Spain
Prior art keywords
mixture
liquid crystals
state
anisylidene
aminophenylacetate
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
ES361304A
Other languages
Spanish (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.)
RCA Corp
Original Assignee
RCA Corp
Radio Corporation of America
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 RCA Corp, Radio Corporation of America filed Critical RCA Corp
Publication of ES361304A1 publication Critical patent/ES361304A1/en
Expired legal-status Critical Current

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
    • C09K19/06—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
    • 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
    • G02F1/13718—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 change of the texture state of a cholesteric liquid crystal

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Nonlinear Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Liquid Crystal Substances (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Steroid Compounds (AREA)

Abstract

A light valve or display device comprises a mixture of at least one nematic liquid crystal of the type that exhibits non-destructive turbulent motion when an electric current of sufficient magnitude is passed therethrough i.e. upon the application of a D.C. or low-frequency electric field the single-phase homogeneous molecular solution separates into two phases causing incident light to be scattered, with at least one member of the group consisting of cholesterol, cholesterol derivatives and cholesteric liquid crystals. The mixture preferably comprises cholesteryl oleate and cholesteryl chloride, and at least one member of the group consisting of anisylidene-p-aminophenylacetate, p n - butoxybenzylidene - p - aminophenylacetate and anisylidene-p-aminophenylbutyrate. The mixture exhibits storage of its. light scattering, emulsion-like state after removal of the electric field initiating the state. To return the mixture to its transparent state a relatively high-frequency A.C. field is applied to the mixture. The Specification includes a table of alternative nematic liquid crystals, cholesterol derivatives and cholesteric liquid crystals, and describes various mixtures by weight.
ES361304A 1967-12-13 1968-12-11 Liquid crystal display element having storage Expired ES361304A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US69030967A 1967-12-13 1967-12-13

Publications (1)

Publication Number Publication Date
ES361304A1 true ES361304A1 (en) 1970-11-01

Family

ID=24771967

Family Applications (1)

Application Number Title Priority Date Filing Date
ES361304A Expired ES361304A1 (en) 1967-12-13 1968-12-11 Liquid crystal display element having storage

Country Status (13)

Country Link
JP (2) JPS49533B1 (en)
AT (1) AT291364B (en)
BE (1) BE725368A (en)
BR (1) BR6804868D0 (en)
CH (1) CH500502A (en)
DE (1) DE1814619C3 (en)
ES (1) ES361304A1 (en)
FR (1) FR1598439A (en)
GB (1) GB1246847A (en)
IL (1) IL31012A (en)
MY (1) MY7400246A (en)
NL (1) NL6817844A (en)
SE (1) SE355081B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4556289A (en) * 1983-03-21 1985-12-03 Manchester R & D Partnership Low birefringence encapsulated liquid crystal and optical shutter using same

Also Published As

Publication number Publication date
SE355081B (en) 1973-04-02
AT291364B (en) 1971-07-12
BE725368A (en) 1969-05-16
IL31012A0 (en) 1969-01-29
GB1246847A (en) 1971-09-22
JPS49533B1 (en) 1974-01-08
DE1814619B2 (en) 1978-04-13
BR6804868D0 (en) 1973-08-09
MY7400246A (en) 1974-12-31
JPS5028269B1 (en) 1975-09-13
FR1598439A (en) 1970-07-06
CH500502A (en) 1970-12-15
NL6817844A (en) 1969-06-17
DE1814619C3 (en) 1979-01-11
DE1814619A1 (en) 1970-06-25
IL31012A (en) 1974-09-10

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