Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Patent
1996-09-09
1998-05-26
Sikes, William L.
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
349155, 430 7, G02F 11335, G02F 11339, G02F 900
Patent
active
057574510
ABSTRACT:
A liquid crystal display element includes a pillar-shaped spacer as a stack of a plurality of color layers, which exists on either an active matrix substrate or an opposite substrate facing to the former substrate. An impurity concentration and an impurity elution quantity of the color layer closest to a switching element among the color layers constituting the pillar-shaped spacer are made lowest among the plurality of color layers, or a bridging density of a resin is made highest among the color layers, thereby restraining an influence of the impurities upon the switching element and enhancing a display quality and a yield. Damages to contact areas when the active matrix substrate is disposed facing to the opposite substrate are reduced by making a hardness of the farthest layer from a surface of a substrate on which the pillar-shaped spacer is disposed lowest among the color layers.
REFERENCES:
patent: 4547798 (1985-10-01), Matsumoto et al.
patent: 5039204 (1991-08-01), Choi
patent: 5368976 (1994-11-01), Tajima et al.
patent: 5680187 (1997-10-01), Nagayama et al.
Hatoh Hitoshi
Kurauchi Shoichi
Midorikawa Teruyuki
Miyazaki Daisuke
Kabushiki Kaisha Toshiba
Malinowski Walter
Sikes William L.
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