JPS56125723A - Liquid crystal display - Google Patents

Liquid crystal display

Info

Publication number
JPS56125723A
JPS56125723A JP2847280A JP2847280A JPS56125723A JP S56125723 A JPS56125723 A JP S56125723A JP 2847280 A JP2847280 A JP 2847280A JP 2847280 A JP2847280 A JP 2847280A JP S56125723 A JPS56125723 A JP S56125723A
Authority
JP
Japan
Prior art keywords
liquid crystal
constituent
electric field
display
bright
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.)
Granted
Application number
JP2847280A
Other languages
Japanese (ja)
Other versions
JPS6410814B2 (en
Inventor
Norihisa Okamoto
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP2847280A priority Critical patent/JPS56125723A/en
Publication of JPS56125723A publication Critical patent/JPS56125723A/en
Publication of JPS6410814B2 publication Critical patent/JPS6410814B2/ja
Granted 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

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Liquid Crystal (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)

Abstract

PURPOSE:To enable a display without a polarized plate and with high contrast and bright, independent of visual angle, by making the thickness of a liquid crystal layer lower than the specific value and specifying the angle theta of the oriented direction at the upper and lower substrate boundaries, in a guest-host effect type liquid crystal display. CONSTITUTION:In twisted orientation of a nematic liquid crystal constituent having positive anisotropic dielectric constant including two color element or two color nematic liquid crystal constituent 28 at no electric field, the angle theta of the direction of orientation between the upper and lower substrates and electrodes 27, 27, is taken as pi/4<=¦theta¦<=pi/2. The thickness (d) of the constituent 28 is taken as 3mu or less and P is made small in the relation of the spiral pitch P=2pidtheta. Thus, at no electric field, the incident light 30 is elliptic polarization 31, 32 of left and right spiral, the both components 31, 32 are subject to the absorption by e.g., color element molecules 33, 34, and strong light emission is obtained without polarized plate. At the application of electric field, the liquid crystal constituent 28 is orthogonal to the substrate and transparent. Thus, the display with double contrast in comparison with conventional one and bright and ease of observation is obtained.
JP2847280A 1980-03-06 1980-03-06 Liquid crystal display Granted JPS56125723A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2847280A JPS56125723A (en) 1980-03-06 1980-03-06 Liquid crystal display

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2847280A JPS56125723A (en) 1980-03-06 1980-03-06 Liquid crystal display

Publications (2)

Publication Number Publication Date
JPS56125723A true JPS56125723A (en) 1981-10-02
JPS6410814B2 JPS6410814B2 (en) 1989-02-22

Family

ID=12249585

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2847280A Granted JPS56125723A (en) 1980-03-06 1980-03-06 Liquid crystal display

Country Status (1)

Country Link
JP (1) JPS56125723A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5928130A (en) * 1982-06-29 1984-02-14 イギリス国 Liquid crystal device
US4596446A (en) * 1982-06-29 1986-06-24 The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Liquid crystal devices with particular cholesteric pitch-cell thickness ratio

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5279948A (en) * 1975-12-25 1977-07-05 Sharp Corp Liquid crystal color display device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5279948A (en) * 1975-12-25 1977-07-05 Sharp Corp Liquid crystal color display device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5928130A (en) * 1982-06-29 1984-02-14 イギリス国 Liquid crystal device
US4596446A (en) * 1982-06-29 1986-06-24 The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Liquid crystal devices with particular cholesteric pitch-cell thickness ratio

Also Published As

Publication number Publication date
JPS6410814B2 (en) 1989-02-22

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