Patent ID: 8493294

Claim:
A display device comprising: a dummy pixel on a display panel; a reflection film on a light-emitting-surface side of the display panel for reflecting light emitted from the dummy pixel; a transparent substrate on the light-emitting-surface side of the display panel; a photodetector on a side of the display panel opposite to the light-emitting-surface side for detecting the light emitted from the dummy pixel and reflected from the reflection film; and a correction circuit for correcting, based on results of detection by the photodetector, luminance of effective pixels that contribute to image display, wherein, the light emitted from the dummy pixel is reflected also from an interface of the transparent substrate and enters the photodetector, the display device further comprises auxiliary wires arranged in a mesh and provided to a pixel array of the effective pixels arranged in a matrix for supplying a cathode potential to the effective pixels, and the auxiliary wires are located to avoid a region where the dummy pixel is formed.