Patent ID: 7755579

Claim:
An image display apparatus comprising: a plurality of image forming devices connected in a matrix with a plurality of scanning wirings and a plurality of modulation wirings; a scanning circuit connected to the plurality of scanning wirings; a circuit for calculating a plurality of correction data, each of which corresponds to a respective one of the plurality of image forming devices connected to the same one of the scanning wirings, wherein a first correction data corresponds to the image forming device connected to a position of the scanning wiring at which a voltage drop on the scanning wiring is a first value, a second correction data corresponds to the image forming device connected to a position of the scanning wiring at which a voltage drop on the scanning wiring is larger than the first value, and the second correction data is larger than the first correction data; a first circuit for reducing a number of bits of the correction data with a dithering or an error diffusion; a second circuit for outputting a corrected image data generated based on an output from the first circuit and on image data; and a modulation circuit for applying to the modulation wiring a modulation signal generated based on the corrected image data.