Patent ID: 8330748

Claim:
An image display apparatus for driving a plurality of display devices through a plurality of row wirings and a plurality of column wirings in matrix, comprising: a correction circuit that outputs corrected data based on luminance data designating luminance of the display device; and a modulation circuit that outputs a pulse width modulation signal for driving the display device to the column wiring based on the corrected data, wherein the correction circuit includes: a luminance calculation circuit that calculates luminance including an effect of a voltage drop in the row wiring and an effect of a light emission time of the display device for each predetermined time slot; an accumulation circuit that temporally accumulates the luminance for each time slot; and a corrected data determination circuit that outputs, as the corrected data, a value determined in accordance with the time slot at a time point when an accumulated luminance value obtained by the temporal accumulation reaches a target luminance value, wherein the luminance calculation circuit includes: a first luminance calculation circuit that calculates a first luminance including the effect of the voltage drop in the row wiring based on a lighting pattern indicating a lighting state of one row of the display devices at the time point of the time slot; a second luminance calculation circuit that calculates a second luminance including the effect of the light emission time of the display device based on a value of the time slot; and a totaling circuit that calculates the luminance for the time slot based on the first luminance and the second luminance.