Patent ID: 8605062

Claim:
A display device in which a plurality of pixels, each having a light-emitting element that emits a red light, a green light, or a blue light, are formed in a matrix manner, the display device comprising: at least n power source lines to supply power for the light emitting elements; at least n signal lines for each color of light emitted by the light-emitting elements; a signal driving circuit which supplies an image signal to the signal lines; a display scanning circuit which supplies a signal for selecting pixels to which the image signal is transmitted; m first scanning lines which extend from the display scanning circuit to intersect with the signal lines; a display unit which includes the plurality of pixels coupled to the signal lines and the first scanning lines; a detection circuit which measures the characteristics of the light-emitting elements of the red, green, or blue light-emitting elements of the respective pixels by flowing a constant current from the signal lines to the respective pixels; a detection scanning circuit which supplies, a signal for selecting the pixels for which characteristics of the light-emitting elements of the pixels are measured; and m second scanning lines which extend from the detection scanning circuit to intersect with the signal lines, and wherein: first switches coupled to the signal driving circuit and second switches coupled to the detection circuit are provided for the signal lines, a plurality of second switches coupled to the detection circuit are selected at the same time, a set of two or more and less than m×n of the pixels are selected by supplying, from the detection scanning circuit, a signal for selecting the set of the pixels for which characteristics of the light-emitting elements of the pixels are measured, a group of the pixels are detected at the same time to measure the characteristics of light-emitting elements of the red, green, or blue light-emitting elements of the respective pixels, a detection switch is provided for each pixel between the light-emitting element and the signal line for the pixel, and the detection switch for each pixel, is driven by the detection scanning circuit.