JPS57171321A - Liquid crystal display element - Google Patents

Liquid crystal display element

Info

Publication number
JPS57171321A
JPS57171321A JP5557081A JP5557081A JPS57171321A JP S57171321 A JPS57171321 A JP S57171321A JP 5557081 A JP5557081 A JP 5557081A JP 5557081 A JP5557081 A JP 5557081A JP S57171321 A JPS57171321 A JP S57171321A
Authority
JP
Japan
Prior art keywords
liquid crystal
coloring matter
display element
crystal display
display
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.)
Pending
Application number
JP5557081A
Other languages
Japanese (ja)
Inventor
Kiyoshige Kinugawa
Yasuhiko Shindo
Masaharu Kamiyama
Yoshinori Tanaka
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP5557081A priority Critical patent/JPS57171321A/en
Publication of JPS57171321A publication Critical patent/JPS57171321A/en
Pending 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
    • G02F1/13725—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 guest-host interaction

Abstract

PURPOSE:To eliminate the hard viewing of a liquid crystal display element which is caused by uneven color, by setting the value of the product of the anisotropy of the refractive index and the thickness of the liquid crystal at <= specific mum and at the same tim, adding a small amount of coloring matter to the liquid crystal material. CONSTITUTION:The value of the product of the anisotropy n of refractive index of the liquid crystal and the liquid crystal layer thickness (d) is set to <=1.2mum. At the same time, a small amount of coloring matter to added to the liquid crystal material to make even the background part of display. Thus a black display is given on the white background to obtain a twisted nematic type liquid crystal display element. The coloring matter which has good dissolving performance to the liquid crystal material with even mixture is usable. In case a coloring matter which is used to a guest-host type liquid crystal display element, etc. is used, an easier-to-see display is secured since the effect of the coloring matter is substantially eliminated for the black display at the glowing part.
JP5557081A 1981-04-15 1981-04-15 Liquid crystal display element Pending JPS57171321A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5557081A JPS57171321A (en) 1981-04-15 1981-04-15 Liquid crystal display element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5557081A JPS57171321A (en) 1981-04-15 1981-04-15 Liquid crystal display element

Publications (1)

Publication Number Publication Date
JPS57171321A true JPS57171321A (en) 1982-10-21

Family

ID=13002369

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5557081A Pending JPS57171321A (en) 1981-04-15 1981-04-15 Liquid crystal display element

Country Status (1)

Country Link
JP (1) JPS57171321A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0130492A2 (en) * 1983-07-01 1985-01-09 Koninklijke Philips Electronics N.V. Liquid crystal display
JPS6019123A (en) * 1983-07-13 1985-01-31 Stanley Electric Co Ltd Liquid crystal display device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0130492A2 (en) * 1983-07-01 1985-01-09 Koninklijke Philips Electronics N.V. Liquid crystal display
JPS60104920A (en) * 1983-07-01 1985-06-10 エヌ・ヴェ−・フィリップス・グリュイランペン　ファブリ−ケン Liquid crystal display
JPS6019123A (en) * 1983-07-13 1985-01-31 Stanley Electric Co Ltd Liquid crystal display device

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