PRODUCTION OF SMECTIC LIQUID CRYSTAL DISPLAY

PROBLEM TO BE SOLVED: To avoid injection of a liquid crystal by a disadvantageous capillary effect which requires a long time and to enable mass-production in a factory by applying a smectic liquid crystal layer in a thin film state on at least one of supporting substrates by printing. SOLUTION: A s...

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Bibliographische Detailangaben
1. Verfasser:	DUBAL HANS-ROLF DR
Format:	Patent
Sprache:	eng
Schlagworte:	ADVERTISING 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 DISPLAYING EDUCATION FREQUENCY-CHANGING LABELS OR NAME-PLATES NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS SEALS SIGNS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To avoid injection of a liquid crystal by a disadvantageous capillary effect which requires a long time and to enable mass-production in a factory by applying a smectic liquid crystal layer in a thin film state on at least one of supporting substrates by printing. SOLUTION: A smectic liquid crystal layer or a mixture containing a smectic liquid crystal is applied on at least one of two substrates by printing, and these substrates are assembled. The printing method includes screen printing, offset printing, flexographic printing or other conventional printing methods. The substrates are bonded, heated and cooled. As a result, the liquid crystal is subjected to various kinds of phase transition and realigned. Also, curing of an adhesive frame is completed. In order to determine the proper viscosity in the printing process, viscosity is measured as a function of the shear rate and temp. Then the shear rate range concerning to the coating process is measured, and the measured viscosity is averaged in this range.