Luminance adjusting display apparatus

Semiconductor film forming positions are positions where positioned are a plurality of same conductive-type transistors that control luminance of optical elements in a drive circuit of each pixel. The semiconductor film forming positions in a semiconductor film forming process are arranged in such positions that they receive heat treatment of the same level of intensities in an intensity distribution. The semiconductor film forming positions are arranged in the same shot region in a heat treatment such as excimer laser annealing, and is arranged within a range corresponding to superposition width in a superimposed irradiation. Thereby, the uniformity of characteristics is achieved for the plurality of transistors formed in the semiconductor film forming positions.