Patent ID: 7301520
Filing Date: 2007-11-27
Classification: G09G

Abstract:
1. An image display device, comprising: a pixel array portion including a plurality of signal lines, a plurality of scan lines, a plurality of pixel electrodes provided at respective regions where the respective signal lines and the respective scan lines intersect with each other, and a plurality of switching elements for driving the plurality of pixel electrodes; a signal line driver circuit for driving the plurality of signal lines; and a scan line driver circuit for driving the plurality of scan lines, wherein the signal line driver circuit includes an integral multiple of m shift registers to which m-bit (m is a natural number) digital picture signals are inputted, a plurality of storage circuits for storing output signals of the shift registers, a plurality of D/A converter circuits for converting output signals of the plurality of storage circuits into analog signals, and a plurality of signal line selecting circuits for transmitting output signals of the plurality of D/A converter circuits to the corresponding signal lines, wherein an operation, in which the digital picture signals are inputted to the respective shift registers, the inputted digital picture signals are sequentially shifted in the respective shift registers in synchronization with a clock signal until they are outputted to the corresponding storage circuits, and the shifted digital picture signals are taken into the storage circuits by a latch signal while a supply of the clock signal to the respective shift registers is being stopped, is repeated n (n is an integer not less than 2) times in a time corresponding to one horizontal scan period, and wherein the plurality of signal line selecting circuits start and stop transmitting the output signals of the plurality of D/A converter circuits while the supply of the clock signal is being stopped.