Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2011-03-08
2011-03-08
Tran, Henry N (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S089000, C345S094000
Reexamination Certificate
active
07903071
ABSTRACT:
A driver IC for a display that includes a first D/A converter with a 1stselection circuit that receives 1stimage signals and supplies a selected positive divisional voltage to a 1stoperational amplifier, which supplies a positive pixel voltage by amplifying the selected positive divisional voltage; a 2ndD/A converter with a 2ndselection circuit that receives 2ndimage signals and supplies a selected negative divisional voltage to a 2ndoperational amplifier, which supplies a negative pixel voltage by amplifying the selected negative divisional voltage; and a polarity switching switch with 1stand 2ndswitches connecting the 1stand 2ndD/A converters respectively, the polarity switching switch being switched to supply each of output terminals corresponding to the 1stand 2ndimage signals alternately with the positive and negative pixel voltages every horizontal scan period by activating/inactivating the 1stand 2ndswitches in a complementary manner.
REFERENCES:
patent: 2001/0028336 (2001-10-01), Yamagata et al.
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patent: 2003/0034947 (2003-02-01), Tanaka et al.
patent: 2005/0225573 (2005-10-01), Kudo et al.
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patent: 2001-290123 (2001-10-01), None
Fukuda Hideto
Kudo Osamu
Kumagai Masao
Udo Shinya
Fujitsu Semiconductor Limited
Greer Burns & Crain Ltd.
Said Mansour M
Tran Henry N
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