Patent ID: 6417847
Filing Date: 2002-07-09
Classification: G09G

Abstract:
A flat-panel display comprising:an array substrate formed of an insulating substrate, including: a plurality of pixel electrodes connected via switching elements to intersections of a plurality of signal lines and a plurality of scanning lines placed in a matrix form on said insulating substrate; a signal line driving circuit, placed on said insulating substrate, for supplying analog image signals transmitted from an image control circuit to each of said signal lines; and a scanning line driving circuit, placed on said insulating substrate, for supplying scanning pulses to each of said scanning lines; and an opposed substrate placed opposite to said array substrate via an optical modulating layer, wherein said signal line driving circuit includes: a shift register having cascade-connected plural flip-flops; at least one bus line for transmitting said analog image signals outputted from said image control circuit; a shift control circuit for controlling said shift register, and a plurality of analog switches, each connected between the corresponding signal line and the corresponding bus line, for supplying said analog image signals on the bus line to each of said signal lines, based on outputs of said flip-flops, wherein said image control circuit sets a voltage of the bus line at substantially an intermediate voltage between a maximum voltage and a minimum voltage of said analog image signals on the bus line in a predetermined precharge period in at least one of a horizontal blanking period or a vertical blanking period.