Display device with optical input function

摘要

A display device includes a plurality of scanning lines (X), a plurality of scanning lines (Y), a plurality of pixel circuits 122 and sensor circuits (124) arranged at intersecting portions between the plurality of scanning lines (X) and the plurality of scanning lines (Y), a signal line drive circuit (134) and scanning line drive circuit (132) which drive the plurality of pixel circuits (122), and a precharge circuit (138) and sensor control circuit (136) which drive the sensor circuits (124). A filter (152) subjects image data to an interpolation process to compensate for a gradation value of an output. In a signal processing section (500), the area of a light receiving area is calculated and it is determined that a light source is set in contact with a display screen when the deviation amount of the area of the light receiving area with respect to a reference area is sufficiently small, a variation amount of the area of the light receiving area with time is sufficiently small or the degree of roundness of the light receiving area is sufficiently large.