Liquid crystal cells – elements and systems – Particular excitation of liquid crystal – Electrical excitation of liquid crystal
Reexamination Certificate
2007-03-06
2007-03-06
Schechter, Andrew (Department: 2871)
Liquid crystal cells, elements and systems
Particular excitation of liquid crystal
Electrical excitation of liquid crystal
C345S690000, C345S208000, C345S211000, C345S090000, C345S092000, C349S038000
Reexamination Certificate
active
10886628
ABSTRACT:
A liquid crystal display according to one embodiment of the present invention, comprising: signal lines and scanning lines arranged in first and second directions on an insulation substrate; display elements formed in vicinity of cross points of the signal lines and scanning lines; liquid crystal capacitors and auxiliary capacitors which accumulate electric charge in accordance with voltages of the signal lines via said display elements; a signal line drive circuit which drives the signal lines; a scanning line drive circuit which drives the scanning lines; auxiliary capacitor power supply lines arranged in the first direction, to which one ends of said auxiliary capacitors arranged in the second direction are commonly connected; and auxiliary capacitor power supply line voltage control circuits which control voltages of said auxiliary capacitor power supply lines in sync with a cycle which drives said liquid crystal capacitors and said auxiliary capacitors by polarity reverse, wherein said auxiliary capacitor power supply line voltage control circuit supplies a first reference voltage to all of said auxiliary capacitor power supply lines during a predetermine period after power-on.
REFERENCES:
patent: 5132819 (1992-07-01), Noriyama et al.
patent: 5808706 (1998-09-01), Bae
patent: 2002/0158993 (2002-10-01), Murai
patent: 2001-255851 (2001-09-01), None
Fujiwara Hisao
Karube Masao
Kimura Hiroyuki
Tsunashima Takanori
Chien Lucy
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Schechter Andrew
Toshiba Matsushita Display Technology Co., Ltd.
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