Patent ID: 8692740

Claim:
A display device comprising: a pixel portion in which light emitting elements are arranged in matrix, the pixel portion including a pixel comprising a plurality of subpixels; a monitor portion in which monitor light emitting elements are provided outside the pixel portion, the monitor portion including a monitor pixel comprising a plurality of subpixels; a first line for detecting a potential of the monitor light emitting elements; a switch in the monitor portion for blocking a current supply to a shorted monitor light emitting element through the first line when one or more of a plurality of the monitor light emitting elements is shorted; a circuit for changing a potential applied to the light emitting elements of each of the subpixels in the pixel in the pixel portion in accordance with a potential change of the monitor light emitting elements of each of the subpixels in the monitor pixel in the monitor portion; a constant current source for supplying a constant current to the monitor light emitting elements through the first line; and a second line electrically connecting the circuit to the light emitting elements in the pixel portion, wherein the switch is connected to the monitor light emitting elements, wherein the circuit is electrically connected to the monitor light emitting elements in the monitor portion through the first line, wherein the circuit is electrically connected to the light emitting elements in the pixel portion through the second line, wherein a potential of the monitor light emitting elements is inputted to an input terminal of the circuit through the first line, and wherein a potential is supplied to the light emitting elements in the pixel portion from an output terminal of the circuit through the second line.