Patent ID: 8519992

Claim:
A display apparatus, comprising: an image display portion configured to display an image on an image display region; a light detection portion configured to detect the intensity of light in said image display region or in the proximity of said image display region using a thin film transistor formed on a same substrate as that of said image display region; and a light control portion configured to control the luminance when said image display portion displays an image based on a result of the detection by said light detection portion; wherein a display element which is controlled by a voltage applied between electrodes is disposed in said image display region; said light control portion adjusts the amplitude of an opposing electrode voltage to be applied to an opposing electrode opposing to one of the electrodes of said display element based on a result of the detection of said light detection portion; said light detection portion is configured to respectively detect the intensity of light at a plurality of places in said image display region; and a mathematic operation portion is configured to carry out a mathematic operation process for obtaining one light intensity detection by averaging the result of the detection of the intensity of light at the plurality of places by said light detection portion.