CPC G09G 3/006 (2013.01) [G09G 2320/045 (2013.01); G09G 2360/145 (2013.01); G09G 2360/16 (2013.01)] | 12 Claims |
1. A method for operating a display device comprising a display portion and a sensor portion, wherein the display portion comprises a matrix of pixels in m rows by n columns, where m and n are each an integer greater than or equal to 2, and the sensor portion comprises a photoelectric conversion element, the method comprising:
dividing the display portion into a first region including first pixels and a second region including second pixels;
emitting first light from the first pixels, and detecting a luminance of the first light by the photoelectric conversion element;
emitting second light from the second pixels, and detecting a luminance of the second light by the photoelectric conversion element;
comparing the luminance of the first light and the luminance of the second light;
dividing one of the first region and the second region into a third region including third pixels and a fourth region including fourth pixels on the basis of a result of the comparison;
emitting third light from the third pixels, and detecting a luminance of the third light by the photoelectric conversion element;
emitting fourth light from the fourth pixels, and detecting a luminance of the fourth light by the photoelectric conversion element;
comparing the luminance of the third light and the luminance of the fourth light; and
detecting, in the third pixels and the fourth pixels, a defective pixel having a defect.
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