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FR2177352A5 - Liquid crystal display element - using nematic liquid crystal with circular polarizer - Google Patents

Liquid crystal display element - using nematic liquid crystal with circular polarizer

Info

Publication number
FR2177352A5
FR2177352A5 FR7309871A FR7309871A FR2177352A5 FR 2177352 A5 FR2177352 A5 FR 2177352A5 FR 7309871 A FR7309871 A FR 7309871A FR 7309871 A FR7309871 A FR 7309871A FR 2177352 A5 FR2177352 A5 FR 2177352A5
Authority
FR
France
Prior art keywords
esp
liquid crystal
circular
polarizer
cell
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.)
Expired
Application number
FR7309871A
Other languages
French (fr)
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.)
Kalle GmbH and Co KG
Original Assignee
Kalle GmbH and Co KG
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 Kalle GmbH and Co KG filed Critical Kalle GmbH and Co KG
Application granted granted Critical
Publication of FR2177352A5 publication Critical patent/FR2177352A5/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
    • G02F1/1393—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 birefringence of the liquid crystal being electrically controlled, e.g. ECB-, DAP-, HAN-, PI-LC cells
    • 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
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers
    • 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
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/13363—Birefringent elements, e.g. for optical compensation
    • G02F1/133638—Waveplates, i.e. plates with a retardation value of lambda/n

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

A thin layer of nematic, esp. homotropic material with negative dielectric anisotropy and molecules oriented perpendicular to the faces is placed between two conductive electrode films of which >=1 and esp. both are transparent, being esp. of InO2 deposited on glass carrier plates. In front of the front glass plate is a circular polarizer esp. in the form of a quarter wave foil against the glass followed by a linear polarizer foil, combined with it, whose direction of polarization is at 45 degrees to the vibration axis of the quarter wave foil. Behind the rear glass plate is an electrically conductive metal mirror film esp. of vapour deposited Al, and light passing through the cell and reflected by the layer has the direction of circular polarization reversed so that the polarizer functions as circular analyzer on its emergence from the front face of the cell.
FR7309871A 1972-03-20 1973-03-20 Liquid crystal display element - using nematic liquid crystal with circular polarizer Expired FR2177352A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2213337A DE2213337A1 (en) 1972-03-20 1972-03-20 LIQUID CRYSTAL DISPLAY ELEMENT

Publications (1)

Publication Number Publication Date
FR2177352A5 true FR2177352A5 (en) 1973-11-02

Family

ID=5839423

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7309871A Expired FR2177352A5 (en) 1972-03-20 1973-03-20 Liquid crystal display element - using nematic liquid crystal with circular polarizer

Country Status (4)

Country Link
JP (1) JPS496898A (en)
DE (1) DE2213337A1 (en)
FR (1) FR2177352A5 (en)
NL (1) NL7303349A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2420178A1 (en) * 1978-03-13 1979-10-12 Hughes Aircraft Co LIQUID CRYSTAL DISPLAY DEVICE
FR2580105A1 (en) * 1985-04-04 1986-10-10 Commissariat Energie Atomique Display cell with nematic liquid crystals of the reflective type with electrically-controlled birefringence making it possible to improve the illumination of the display
US5361151A (en) * 1990-08-09 1994-11-01 Seiko Epson Corporation Reflection-type liquid crystal device with polarization of output light perpendicular to that of input light

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH564813A5 (en) * 1973-11-12 1975-07-31 Bbc Brown Boveri & Cie
JPS5137249A (en) * 1974-09-26 1976-03-29 Dainippon Toryo Kk HANSHAGATAEKISHOHYOJISOCHI
JPS5137250A (en) * 1974-09-26 1976-03-29 Dainippon Toryo Kk HANSHAGATAEKISHOHYOJISOCHI

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2420178A1 (en) * 1978-03-13 1979-10-12 Hughes Aircraft Co LIQUID CRYSTAL DISPLAY DEVICE
FR2580105A1 (en) * 1985-04-04 1986-10-10 Commissariat Energie Atomique Display cell with nematic liquid crystals of the reflective type with electrically-controlled birefringence making it possible to improve the illumination of the display
US5361151A (en) * 1990-08-09 1994-11-01 Seiko Epson Corporation Reflection-type liquid crystal device with polarization of output light perpendicular to that of input light
USRE35799E (en) * 1990-08-09 1998-05-19 Seiko Epson Corporation Reflection-type liquid crystal device with polarization of output light perpendicular to that of input light

Also Published As

Publication number Publication date
JPS496898A (en) 1974-01-22
DE2213337A1 (en) 1973-10-04
NL7303349A (en) 1973-09-24

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Legal Events

Date Code Title Description
ST Notification of lapse