FR2177317A5 - Liquid crystal display device - exhibits colour change on applying a voltage - Google Patents

Liquid crystal display device - exhibits colour change on applying a voltage

Info

Publication number
FR2177317A5
FR2177317A5 FR7309470A FR7309470A FR2177317A5 FR 2177317 A5 FR2177317 A5 FR 2177317A5 FR 7309470 A FR7309470 A FR 7309470A FR 7309470 A FR7309470 A FR 7309470A FR 2177317 A5 FR2177317 A5 FR 2177317A5
Authority
FR
France
Prior art keywords
liq
crystal
electrode
applying
voltage
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
FR7309470A
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 FR2177317A5 publication Critical patent/FR2177317A5/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
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • 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
    • G02F1/1343—Electrodes
    • G02F1/13439—Electrodes characterised by their electrical, optical, physical properties; materials therefor; method of making

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)
  • Spectroscopy & Molecular Physics (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

Liq. crystal display device comprises a polarisn. a 1st transparent electrode, a thin film of nematic liq. crystal in contact with the electrode, a 2nd electrode contacting the other side of the liq. crystal and a 2nd polariser disposed so that light which has passed through the liq. crystal, opt. after reflection at the 2nd electrode, passes also through the 2nd polariser. Specif. each electrode has an epitaxially absorptive effect on the liq. crystal, and has a topology corresp. in a straight beam parallel to those associated with the 2nd surface, and the axes of the liq. crystals are in planes perpendicular to the surface of the electrodes. Apptn. shows a change of colour of the liq. crystal on applying a voltage between the electrodes.
FR7309470A 1972-03-17 1973-03-16 Liquid crystal display device - exhibits colour change on applying a voltage Expired FR2177317A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722212881 DE2212881A1 (en) 1972-03-17 1972-03-17 LIQUID CRYSTAL DISPLAY ELEMENT

Publications (1)

Publication Number Publication Date
FR2177317A5 true FR2177317A5 (en) 1973-11-02

Family

ID=5839176

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7309470A Expired FR2177317A5 (en) 1972-03-17 1973-03-16 Liquid crystal display device - exhibits colour change on applying a voltage

Country Status (6)

Country Link
JP (1) JPS4914140A (en)
BE (1) BE796768A (en)
DE (1) DE2212881A1 (en)
FR (1) FR2177317A5 (en)
IT (1) IT982893B (en)
NL (1) NL7303204A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51145495U (en) * 1975-05-16 1976-11-22
JPS5251479A (en) * 1975-10-22 1977-04-25 Sumitomo Alum Smelt Co Ltd Process for laminating a fluorocarbon rsin film
FR2568393B1 (en) * 1984-07-26 1986-11-14 Commissariat Energie Atomique AN ELECTRICALLY CONTROLLED BIREFRINGENCE TYPE NEMATIC LIQUID CRYSTAL LOW DOPED BY A CHIRAL SOLUTE
JPS6368813A (en) * 1986-09-10 1988-03-28 Casio Comput Co Ltd Liquid crystal optical element

Also Published As

Publication number Publication date
JPS4914140A (en) 1974-02-07
IT982893B (en) 1974-10-21
DE2212881A1 (en) 1973-09-27
BE796768A (en) 1973-09-14
NL7303204A (en) 1973-09-19

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Legal Events

Date Code Title Description
ST Notification of lapse