Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2011-05-03
2011-05-03
Nguyen, Chanh (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S089000
Reexamination Certificate
active
07936328
ABSTRACT:
A data driver used for driving a display panel is provided with a grayscale voltage generator circuit generating a plurality of grayscale voltages; and a drive circuitry selecting a selected grayscale voltage from the plurality of grayscale voltages in response to input display data, and outputting a data signal having a voltage level corresponding to the selected grayscale voltage to the display panel. The grayscale voltage generator circuit comprises an amplifier generating a voltage bias; and a voltage generator circuit generating the plurality of grayscale voltages from the voltage bias. The amplifier is designed so that a polarity of an offset voltage of the amplifier is reversible. The polarity of the offset voltage of the amplifier is controlled so that the polarity of the offset voltage of the amplifier used for driving a specific pixel of the display panel in a certain frame period is opposite to that of the offset voltage of the amplifier used for driving the c specific pixel in another frame period.
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Furihata Hirobumi
Nishimura Kouichi
Nose Takashi
Nguyen Chanh
Renesas Electronics Corporation
Snyder Adam J
Sughrue & Mion, PLLC
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