WO1997007427A3 - Procede de commande d'une cellule a cristal liquide et dispositif - Google Patents

Procede de commande d'une cellule a cristal liquide et dispositif Download PDF

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Publication number
WO1997007427A3
WO1997007427A3 PCT/FR1996/001153 FR9601153W WO9707427A3 WO 1997007427 A3 WO1997007427 A3 WO 1997007427A3 FR 9601153 W FR9601153 W FR 9601153W WO 9707427 A3 WO9707427 A3 WO 9707427A3
Authority
WO
WIPO (PCT)
Prior art keywords
alignment
liquid crystal
crystal cell
electrical field
controlling
Prior art date
Application number
PCT/FR1996/001153
Other languages
English (en)
Other versions
WO1997007427A2 (fr
Inventor
Francois Parmentier
Original Assignee
Francois Parmentier
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 Francois Parmentier filed Critical Francois Parmentier
Publication of WO1997007427A2 publication Critical patent/WO1997007427A2/fr
Publication of WO1997007427A3 publication Critical patent/WO1997007427A3/fr

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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
    • G02F1/141—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 using ferroelectric liquid crystals

Abstract

Procédé de commutation d'une cellule de cristal liquide smectique C chiral (1) présentant un ancrage planaire en géométrique page de livre ou Bookshelf alignée par les parois (2, 3), caractérisé en ce qu'il comprend au moins la succession d'opérations suivantes: l'on impose un premier champ électrique fort Ep substantiellement parallèle aux parois d'ancrage suivant une direction faisant un angle compris entre 90 degrés et 10 degrés par rapport à la normale au plan des couches smectiques; l'on interrompt ledit champ fort; l'on impose un champ électrique EN comportant au moins une composante d'orientation normale aux faces d'ancrage et de sens choisi en fonction de l'orientation finale souhaitée de la ferroélectricité de la couche smectique.
PCT/FR1996/001153 1995-08-14 1996-07-22 Procede de commande d'une cellule a cristal liquide et dispositif WO1997007427A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9509799 1995-08-14

Publications (2)

Publication Number Publication Date
WO1997007427A2 WO1997007427A2 (fr) 1997-02-27
WO1997007427A3 true WO1997007427A3 (fr) 1997-06-12

Family

ID=9481914

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR1996/001153 WO1997007427A2 (fr) 1995-08-14 1996-07-22 Procede de commande d'une cellule a cristal liquide et dispositif

Country Status (1)

Country Link
WO (1) WO1997007427A2 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62194231A (ja) * 1986-02-20 1987-08-26 Seiko Epson Corp 液晶駆動装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62194231A (ja) * 1986-02-20 1987-08-26 Seiko Epson Corp 液晶駆動装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 012, no. 046 (P - 665) 12 February 1988 (1988-02-12) *

Also Published As

Publication number Publication date
WO1997007427A2 (fr) 1997-02-27

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