Patent ID: 7362290

Claim:
An image signal correcting circuit which corrects and supplies an image signal to a display which has a plurality of scanning lines; a plurality of data lines; a plurality of pixels arranged correspondingly to intersections of the plurality of scanning lines and the plurality of data lines; pixel electrodes constituting the pixels; and counter electrodes facing the pixel electrodes, with an electro-optical material therebetween, wherein the image signal is applied to a pixel electrode corresponding to a selected scanning line and a selected data line, the image signal correcting circuit comprising: a subtractor for calculating the difference between a reference gray scale level and a gray scale level of a displayed pixel according to an image signal; an integrator which integrates the result obtained by the subtractor with respect to pixels corresponding to a selected scanning line; and an adder which adds the result obtained by the integrator to each of image signals applied to pixels corresponding to a subsequently selected scanning line; and outputs the sum of the result obtained by the integrator and the image signals as corrected image signals.