Patent ID: 7817118

Claim:
A display device comprising: display emissive elements arranged in a matrix within a display region for emitting light in accordance with a drive current; a measurement emissive element which is formed in a position different from the display region and formed by the same process as the organic EL elements formed in the display region; a drive voltage supply circuit for supplying drive voltage to the measurement emissive element; a drive state detection circuit for detecting a drive state of the measurement emissive element in the case where the drive voltage is supplied by the drive voltage supply circuit; and a correction circuit for correcting voltage to be applied to each display emissive element in the display region based on the drive state detected by the drive state detection circuit; wherein the drive voltage to be supplied to the display emissive elements in the display region is a specified voltage and the drive of the display emissive elements in the display region is a digital drive where the drive voltage to be supplied to the measurement emissive element is a predetermined voltage and the supply time of the drive voltage is controllable; and the correction circuit changes positive or negative power supply voltage of the display emissive elements in the display region.