LIQUID CRYSTAL DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE

PROBLEM TO BE SOLVED: To enable gradation control by using a liquid crystal showing a chiral smectic C phase by using a specific chiral smectic C liquid crystal whose smectic layer has a chevron structure. SOLUTION: At the part of the chiral smectic C liquid crystal 13 sandwiched between substrates...

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Bibliographische Detailangaben
Hauptverfasser:	TOKANO GOJI, TERADA MASAHIRO, ASAO YASUSHI, MORI YOSHIMASA, MORIYAMA TAKASHI
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES ADVERTISING ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION CHEMISTRY CRYPTOGRAPHY DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING DISPLAY DYES EDUCATION FREQUENCY-CHANGING MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PAINTS PHYSICS POLISHES SEALS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To enable gradation control by using a liquid crystal showing a chiral smectic C phase by using a specific chiral smectic C liquid crystal whose smectic layer has a chevron structure. SOLUTION: At the part of the chiral smectic C liquid crystal 13 sandwiched between substrates 11 and 12, liquid crystal molecules 14 rise at a specific pretilt angle α from the substrates 11 and 12 nearby the interface of the substrate 11 or 12 along the uniaxial aligning processing direction A of the substrates 11 and 12 and form the smectic layer 16 in chevron structure having a tilt angle δto the substrate normal between the substrates 11 and 12. Then this liquid crystal device is characterized by having an alignment state wherein the mean molecule axis of molecules 14 of the liquid crystal 13 substantially meet with a mean uniaxial alignment process axis and/or the center axis of the maximum tilt of the liquid crystal 13 by electric field application when no electric field is applied and by that the transmitted light intensity varies with an electric field applied to the liquid crystal 13 when the electric field is applied. The characteristics are used to make a gradational display.