JPS6444422A - Liquid crystal display element - Google Patents

Liquid crystal display element

Info

Publication number
JPS6444422A
JPS6444422A JP19970887A JP19970887A JPS6444422A JP S6444422 A JPS6444422 A JP S6444422A JP 19970887 A JP19970887 A JP 19970887A JP 19970887 A JP19970887 A JP 19970887A JP S6444422 A JPS6444422 A JP S6444422A
Authority
JP
Japan
Prior art keywords
liquid crystal
thickness
substrates
crystal layer
deltan
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
JP19970887A
Other languages
Japanese (ja)
Inventor
Shinji Hasegawa
Yoshio Hanada
Tamihito Nakagome
Yasuhiko Shindo
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 JP19970887A priority Critical patent/JPS6444422A/en
Publication of JPS6444422A publication Critical patent/JPS6444422A/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
    • G02F1/139—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
    • G02F1/1396—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 the liquid crystal being selectively controlled between a twisted state and a non-twisted state, e.g. TN-LC cell
    • G02F1/1397—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 the liquid crystal being selectively controlled between a twisted state and a non-twisted state, e.g. TN-LC cell the twist being substantially higher than 90°, e.g. STN-, SBE-, OMI-LC cells

Landscapes

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

Abstract

PURPOSE:To suppress hysteresis by specifying the product of the refractive index anisotropy of a liquid crystal and the thickness of a liquid crystal layer as well as the ratio of the thickness of the liquid crystal layer and the spiral pitch of the liquid crystal respectively to specific ranges. CONSTITUTION:The nematic liquid crystal 3 having positive dielectric anisotropy is held in place between a pair of electrode substrates 1 and 2 subjected to an orientation treatment to a 20-30 deg. range in the pretilt angle of molecular orientation. The liquid crystal 3 consists of the liquid crystal molecules 3a forming 260-280 deg. twist structure in the thickness direction thereof. Polarizing plates 4, 5 are disposed on the outside of the substrates 1, 2 in such a manner that the axis of polarization or the axis of absorption thereof attain the prescribed angle with the molecules 3a adjacent to the respective substrates 1, 2. The product DELTAn.d of the refractive index anisotropy DELTAn of the liquid crystal 3 and the thickness (d) of the liquid crystal layer is set at 0.89-0.93mum and the ratio d/P of the thickness (d) and the spiral pitch P of the liquid crystal 3 at 0.67-0.71.
JP19970887A 1987-08-12 1987-08-12 Liquid crystal display element Pending JPS6444422A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19970887A JPS6444422A (en) 1987-08-12 1987-08-12 Liquid crystal display element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19970887A JPS6444422A (en) 1987-08-12 1987-08-12 Liquid crystal display element

Publications (1)

Publication Number Publication Date
JPS6444422A true JPS6444422A (en) 1989-02-16

Family

ID=16412288

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19970887A Pending JPS6444422A (en) 1987-08-12 1987-08-12 Liquid crystal display element

Country Status (1)

Country Link
JP (1) JPS6444422A (en)

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