Liquid crystal cells – elements and systems – Particular excitation of liquid crystal – Electrical excitation of liquid crystal
Reexamination Certificate
2007-07-13
2009-10-27
Dudek, James A (Department: 2871)
Liquid crystal cells, elements and systems
Particular excitation of liquid crystal
Electrical excitation of liquid crystal
C349S129000
Reexamination Certificate
active
07609332
ABSTRACT:
Disclination of an active matrix liquid crystal display device is reduced. Portions of pixel electrodes are formed so as to mutually overlap with a convex portion. If the height of the convex portion is too tall, the amount of light leakage increases due to liquid crystals orienting diagonally with respect to a substrate surface. (See FIG.1C.) If the height of the convex portion is low, the disclination reduction effect is low. The optimal convex portion height is thus determined.
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Ueda, T., “Improvement of Aperture Ratio by Shield Electrode Structure,” Semiconductor World, '94 the Latest LCD Technology, extra edition, 1993, vol. 12, No. 13, issued on Oct. 15, 1993, pp. 136-138 (with full English translation, pp. 1-8).
Hamamoto Yuriko
Hirakata Yoshiharu
Satake Rumo
Cook ALex Ltd.
Dudek James A
Semiconductor Energy Laboratory Co,. Ltd.
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