COLOR LIQUID CRYSTAL DISPLAY DEVICE AND ITS PRODUCTION

PURPOSE:To provide the color liquid crystal display device of a C-TN system which is wide in the optimum visual angle region of a display contrast and is uniform and stable over the entire part of a screen. CONSTITUTION:Respective pixel regions are bisected and are subjected to orientation treatment...

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Bibliographische Detailangaben
1. Verfasser:	TAKAMATSU TOSHIAKI
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:	PURPOSE:To provide the color liquid crystal display device of a C-TN system which is wide in the optimum visual angle region of a display contrast and is uniform and stable over the entire part of a screen. CONSTITUTION:Respective pixel regions are bisected and are subjected to orientation treatments in such a manner that the optimum visual angle directions of the contrasts respectively in the one region of a pair of the divided region R and the other region vary. As a result, the regions in the optimum visual angle directions of the contrast of the display device are widened. The orientation treatments are executed in such a manner that the helix directions 4 of the respective liquid crystal layers 1 in a pair of the divided regions are the same and, therefore, the change in the helix directions 4 of the liquid crystal layer 1 with lapse of time is small and the good characteristics of the contrasts are stably maintained. Further, the stability in various places of the helix directions 4 are improved by adding a cholesteric liquid crystal to these regions.