Patent ID: 7479953

Claim:
A display device in which a plurality of pixels are arranged in the inside of a display area, and the respective pixels include first electrodes to which signals are independently inputted and a common second electrode to which a signal which becomes the reference with respect to the signals is inputted, wherein the display device further comprising: means which divides the display area into at least a first area and a second area by electrically separating the common second electrode and obtains first information for specifying average brightness of the first area in response to an electric current from the second electrode in the first area, means which generates a referential voltage being emphasized peak corresponding to a value of the information for specifying average brightness and applies the referential voltage being emphasized peak to the second electrode in the first area, means which obtains second information for specifying average brightness of the second area in response to an electric current from the second electrode in the second area, means which compares the information for specifying average brightness and the information for specifying average brightness in the first area, means which, based on the comparison, selects the referential voltage being emphasized peak when the value of the second information for specifying average brightness is smaller than the value of the first information for specifying average brightness, and selects an auxiliary referential voltage which is larger than the referential voltage being emphasized peak when the value of the second information for specifying average brightness is larger than the value of the first information for specifying average brightness, and means which applies the selected voltage to the second electrode in the second area.