Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2006-08-29
2006-08-29
Mengistu, Amare (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S087000
Reexamination Certificate
active
07098885
ABSTRACT:
In a signal line drive circuit of an active-matrix type liquid-crystal display which is a voltage-controlled type display with a capacitive load, n selector switches (161to16n) are provided between buffer circuits (151to15n) to which voltages responsive to an image to be displayed are inputted from reference voltage selection circuits (131to13n), and output terminals (T1to Tn) to which are connected image signal lines. These selector switches (161to16n), based on a shorting control signal (Csh) that is at a high level when the polarity is reversed to perform AC drive of the liquid-crystal panel, switch the output signals (OUT1to OUTn of the image signal line drive circuit between the output signals of the buffer circuits (151to15n) and the common electrode signal (Vcom). By doing this, each of the image signal lines is, for a prescribed time only when the polarity is reversed, separated from the buffer circuits (151to15n) and shorted to the common electrode. This configuration reduces the power consumption of the signal line drive circuit
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Kagawa Haruhito
Kumada Kouji
Ohta Takashige
Mengistu Amare
Nixon & Vanderhye P.C.
Pham Tammy
Sharp Kabushiki Kaisha
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