JPS64514A - Liquid crystal display device - Google Patents

Liquid crystal display device

Info

Publication number
JPS64514A
JPS64514A JP2879288A JP2879288A JPS64514A JP S64514 A JPS64514 A JP S64514A JP 2879288 A JP2879288 A JP 2879288A JP 2879288 A JP2879288 A JP 2879288A JP S64514 A JPS64514 A JP S64514A
Authority
JP
Japan
Prior art keywords
liquid crystal
polarizing plate
nematic liquid
display
regulating
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
JP2879288A
Other languages
Japanese (ja)
Other versions
JP2575445B2 (en
JPH01514A (en
Inventor
Kazuo Kawasaki
Katsuo Yamada
Ryoichi Watanabe
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP63028792A priority Critical patent/JP2575445B2/en
Publication of JPS64514A publication Critical patent/JPS64514A/en
Publication of JPH01514A publication Critical patent/JPH01514A/en
Application granted granted Critical
Publication of JP2575445B2 publication Critical patent/JP2575445B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)

Abstract

PURPOSE:To eliminate difference of visibility caused by the difference in visual sense of a black and white display by specifying a product of (anisotropy of refractive index of a nematic liquid crystal ) * (thickness of layer of the nematic liquid crystal) X(pretilt angle of the nematic liquid crystal) and an angle between absorption axis of each polarizing plate coated on a first and second substrate, respectively. CONSTITUTION:A black and white display is provided by regulating, in a liquid crystal display device for double refractive type positive display, by regulating a value of product (R)=DELTAn.d.cos<2>theta (wherein DELTAn is anisotropy of refractive index, d is a thickness of a layer, and theta is a pretilt angle, of a nematic liquid crystal 8) to 0.3-0.7, and regulating also an angle THETA between absorption axes (or aces of polarization) of each polarizing plate 9, 10 coated on two substrates 1, 2 to 150R-20 deg.-150R+20 deg.. By this constitution, background color generated by transmitted or reflected color by the interference of light is made substantially uniform and colorless in the visible ray region, so a black display is formed on a white background utilizing a combination of a front polarizing plate 9 and a back polarizing plate 10 in a stage of impression of a selected voltage. Thus, scatter of evaluated visibility due to difference of visual sense is eliminated.
JP63028792A 1987-02-16 1988-02-12 LCD display Expired - Fee Related JP2575445B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63028792A JP2575445B2 (en) 1987-02-16 1988-02-12 LCD display

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP3141187 1987-02-16
JP62-31411 1987-02-16
JP63028792A JP2575445B2 (en) 1987-02-16 1988-02-12 LCD display

Publications (3)

Publication Number Publication Date
JPS64514A true JPS64514A (en) 1989-01-05
JPH01514A JPH01514A (en) 1989-01-05
JP2575445B2 JP2575445B2 (en) 1997-01-22

Family

ID=26366940

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63028792A Expired - Fee Related JP2575445B2 (en) 1987-02-16 1988-02-12 LCD display

Country Status (1)

Country Link
JP (1) JP2575445B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5048933A (en) * 1989-04-14 1991-09-17 Konica Corporation Transmission type liquid crystal display device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60107020A (en) * 1983-07-12 1985-06-12 ビ−ビ−シ−　アクチエンゲゼルシヤフト　ブラウン　ボヴエリ　ウント　コムパニ− lcd display

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60107020A (en) * 1983-07-12 1985-06-12 ビ−ビ−シ−　アクチエンゲゼルシヤフト　ブラウン　ボヴエリ　ウント　コムパニ− lcd display

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5048933A (en) * 1989-04-14 1991-09-17 Konica Corporation Transmission type liquid crystal display device

Also Published As

Publication number Publication date
JP2575445B2 (en) 1997-01-22

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees