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JPS5710116A - Liquid crystal display cell - Google Patents

Liquid crystal display cell

Info

Publication number
JPS5710116A
JPS5710116A JP8357980A JP8357980A JPS5710116A JP S5710116 A JPS5710116 A JP S5710116A JP 8357980 A JP8357980 A JP 8357980A JP 8357980 A JP8357980 A JP 8357980A JP S5710116 A JPS5710116 A JP S5710116A
Authority
JP
Japan
Prior art keywords
liquid crystal
clockwise
optical active
cell
sharpness
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
JP8357980A
Other languages
Japanese (ja)
Other versions
JPS6029090B2 (en
Inventor
Yutaka Takeshita
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 JP55083579A priority Critical patent/JPS6029090B2/en
Publication of JPS5710116A publication Critical patent/JPS5710116A/en
Publication of JPS6029090B2 publication Critical patent/JPS6029090B2/en
Expired 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

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)
  • Liquid Crystal Substances (AREA)

Abstract

PURPOSE:To improve the sharpness of optical characteristics, by adding a material that has a property backward to the twisting direction or using a liquid crystal mixture containing an addition compound having the clockwise turning property and an addition compound having the counterclockwise turning property. CONSTITUTION:A liquid crystal mixture containing an optical active material having the clockwise turning property is enclosed into a cell that received a process by a rubbing or an oblique vapor deposition method so that the cell is twisted counterclockwise to the advancing direction of light. The V-T (voltage-transmittivity) curve is shown in the figure when it is measured at 20 deg.C. When a comparison of VsatVth is given between the liquid crystal containing no optical active material (shown by broken lines) and that containing an optical active material (shown by solid line), the former is 1.420 and the latter is 1.320. Thus it is clear that the latter has the sharpness. In the same way, both the sharpness and the speed of response can be improved if a liquid crystal mixture containing both the clockwise and counterclockwise turning optical active materials is enclosed into a cell that received a process so that it is twisted clockwise.
JP55083579A 1980-06-20 1980-06-20 lcd display cell Expired JPS6029090B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55083579A JPS6029090B2 (en) 1980-06-20 1980-06-20 lcd display cell

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55083579A JPS6029090B2 (en) 1980-06-20 1980-06-20 lcd display cell

Publications (2)

Publication Number Publication Date
JPS5710116A true JPS5710116A (en) 1982-01-19
JPS6029090B2 JPS6029090B2 (en) 1985-07-09

Family

ID=13806400

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55083579A Expired JPS6029090B2 (en) 1980-06-20 1980-06-20 lcd display cell

Country Status (1)

Country Link
JP (1) JPS6029090B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63155129A (en) * 1986-12-19 1988-06-28 Fujitsu Ltd lcd display panel
JPS63293525A (en) * 1987-05-26 1988-11-30 Sanyo Electric Co Ltd Liquid crystal display device
JPH0282225A (en) * 1988-09-20 1990-03-22 Fujitsu Ltd liquid crystal display element
JP2010008911A (en) * 2008-06-30 2010-01-14 Tokyo Univ Of Science Liquid crystal element

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6216910A (en) * 1985-07-15 1987-01-26 Matsushita Electric Ind Co Ltd Conveying device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63155129A (en) * 1986-12-19 1988-06-28 Fujitsu Ltd lcd display panel
JPS63293525A (en) * 1987-05-26 1988-11-30 Sanyo Electric Co Ltd Liquid crystal display device
JPH0282225A (en) * 1988-09-20 1990-03-22 Fujitsu Ltd liquid crystal display element
JP2010008911A (en) * 2008-06-30 2010-01-14 Tokyo Univ Of Science Liquid crystal element

Also Published As

Publication number Publication date
JPS6029090B2 (en) 1985-07-09

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