ALIGNMENT TREATMENT OF LIQUID CRYSTAL CELL

PROBLEM TO BE SOLVED: To provide an alignment treatment method which decreases the alignment defects after injection of smectic liquid crystals by effectively utilizing the temp. range of the antiferroelectric phase of these smectic liquid crystals and subjecting the smectic liquid crystals to cold-...

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Bibliographische Detailangaben
Hauptverfasser:	FUKAZAWA KAZUTO, KONDO YUICHI
Format:	Patent
Sprache:	eng
Schlagworte:	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 FREQUENCY-CHANGING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide an alignment treatment method which decreases the alignment defects after injection of smectic liquid crystals by effectively utilizing the temp. range of the antiferroelectric phase of these smectic liquid crystals and subjecting the smectic liquid crystals to cold-heat cycles. SOLUTION: The antiferroelectric liquid crystals are injected into an empty cell in a liquid crystal injecting stage S2. The liquid crystal cell is first arranged in a suitable cold-heat cycle test chamber in a cold-heat cycle stage S4. While the temp. of the antiferroelectric liquid crystals is maintained within a temp. range at which an antiferroelectric characteristic is exhibited by the prescribed cold-heat cycle conditions, the liquid crystal cell is alternately repetitively subjected to both treatments of heating and cooling. The liquid crystal cell is subjected to the cold-heat treatments in such a manner.