Patent ID: 7205967

Claim:
A display apparatus comprising: a plurality of pixels which are respectively arranged at intersections of a plurality of scan lines and a plurality of signal lines in a display area, and each of which comprises: (i) an optical element which performs an optical operation based on a current value of a drive current flowing therethrough, and (ii) a pixel circuit which supplies said drive current to said optical element; and a current control driver which is arranged in an area other than said display area, which is connected to each of said signal lines, and which reduces a current value of a gradation signal by a predetermined current reduction ratio so as to supply said drive current to said optical element; wherein the current control driver comprises: a plurality of current mirror circuits corresponding respectively to the signal lines; a plurality of first switch circuits which are provided between the current mirror circuits and the signal lines corresponding thereto, respectively, and which are adapted to have a sync-signal input thereto so that the current reduced by the mirror circuits flows in the signal lines; a plurality of second switch circuits which supply corresponding gradation signals to the current mirror circuits; and a shift register which outputs a signal to the second switch circuits to select the second switch circuits sequentially.