Patent ID: 6683596
Filing Date: 2004-01-27
Classification: G09G

Abstract:
A data line driving circuit of an electro-optical panel which has a plurality of scanning lines, a plurality of data lines, and switching devices and pixel electrodes arranged in such a manner as to correspond to intersections of said scanning lines and said data lines, and which is divided into blocks in units of a predetermined number of data lines, said data line driving circuit comprising:a shift register section having a clock signal supply line that supplies a clock signal only for a block in which image data values do not match between horizontal lines which are adjacent in a data time-series manner, a plurality of registers that sequentially shift a transfer start pulse in accordance with said clock signal in order to generate each sampling signal, said plurality of registers being provided in such a manner as to correspond to each of said blocks, and a selection circuit that selectively supplies said transfer start pulse to each of said registers; an image data conversion section that samples image data in accordance with each of said sampling signals and converts the data obtained by performing sampling into line sequence image data after the data is latched; and a DA conversion section that outputs each data line signal obtained by performing DA conversion on said line sequence image data to each of said data lines.