Patent ID: 6618043
Filing Date: 2003-09-09
Classification: G09G

Abstract:
An image display device having a plurality of pixels in matrix that are defined by a plurality of data signal lines and a plurality of scanning signal lines intersecting with said plurality of data singal lines, a data signal line driving circuit for feeding image signals to the data signal lines, and a scanning signal line driving circuit for feeding a scanning signal to the scanning signal lines, said image display device comprising a precharge circuit,wherein said precharge circuit includes: a reference signal input section, to which at least one precharge reference potential is inputted; a control signal input section, to which at least one control signal is inputted; a plurality of signal delay sections for sequentially delaying an output of said control signal input section; and a reference signal switching section for switching, in accordance with outputs of said signal delay sections, between a state of outputting the precharge reference potential of said reference signal input section to each of said data signal lines and a state of non-outputting the same thereto; wherein said signal delay sections delay the output of said control signal input section, to vary timings of write of the precharge reference potential into said data signal lines, so that at least two different timings are available; said precharge circuit includes a signal switching control section for outputting a signal for controlling said reference signal switching sections in accordance with outputs of said signal delay sections and a charge end signal for stopping charging of each data signal lie to the precharge reference potential; and all said reference signal switching sections in said precharge circuit simultaneously stop outputting of the precharge reference potential to each data signal line in response to the signal outputted by said switching control section.