Liquid crystal cells – elements and systems – Particular excitation of liquid crystal – Electrical excitation of liquid crystal
Patent
1997-10-31
2000-08-15
Malinowski, Walter
Liquid crystal cells, elements and systems
Particular excitation of liquid crystal
Electrical excitation of liquid crystal
349 85, G02F 1136, G02F 11333
Patent
active
061044504
ABSTRACT:
A gate insulating film, a lower-layer pixel electrode, an inter-layer insulating film, and an upper-layer pixel electrode, in that order, are provided on a transparent insulating substrate. The lower-layer pixel electrode and the upper-layer pixel electrode are connected to the drain electrode of a TFT, and a plurality of holes are provided in the upper-layer pixel electrode. Where the upper-layer pixel electrode lies, the image signal voltage is applied directly to the liquid crystal, but where there are holes in the upper-layer pixel electrode, a divided capacitance voltage of the serial capacitances of the liquid crystal and the inter-layer insulating film is applied. In this way, it becomes possible to effectively form within the same pixel several domains with different viewing angle characteristics, without giving rise to disturbance of alignment.
REFERENCES:
patent: 5646705 (1997-07-01), Higuchi et al.
patent: 5680190 (1997-10-01), Michibayashi et al.
patent: 5831708 (1998-11-01), Hiraishi et al.
Malinowski Walter
Sharp Kabushiki Kaisha
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