Driving apparatus and method of liquid crystal display...

Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix

Reexamination Certificate

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Details

Other Related Categories

C345S100000

Type

Reexamination Certificate

Status

active

Patent number

06870524

Description

ABSTRACT:
A driving apparatus of liquid crystal display apparatus of the present invention has a changeover control circuit for controlling each switching of the inputs and outputs of first and second amplifier circuits. In the changeover control circuit, an offset voltage applied to a pixel by the first and second amplifier circuits is changed in its polarity for every predetermined number of frames in accordance with a switch changeover signal for operational amplifier and an alternation switch changeover signal input and the offset voltage is canceled by frames whose number is twice as many as the predetermined number of frames. This allows the circuit to cancel the offset voltage by the frames and to avoid that the display unevenness is discernible by human eyes, thereby ensuring to provide driving apparatus and driving method of liquid crystal display apparatus that can carry out the display with high quality.

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patent: 6388653 (2002-05-01), Goto et al.
patent: 5-56374 (1993-03-01), None
patent: A11249623 (1999-09-01), None
patent: A11249624 (1999-09-01), None
patent: 11-305735 (1999-11-01), None

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