Patent attributes
A display device according to an embodiment of the invention includes a display panel, a drive circuit that drives the display panel, an illuminating unit that illuminates the display panel, a photosensing section Ls having an ambient light photosensor Ts that senses the brightness of ambient light and a capacitor Cw that is charged with a predetermined reference voltage via a first switch S1, an ambient light photosensor reading section Re1 that reads a value sensed by the photosensing section, and a controller that controls the illuminating unit according to an output of the ambient light photosensor reading section. The ambient light photosensor reading section is provided with a noise avoidance unit that avoids erroneous sensing in the photosensing section induced as a result of noise generated when the drive circuit operates. Thanks to such structure, a display device is provided in which sensing of ambient light is free from the effects of noise arising from the parasitic capacitance formed between the electrodes and wiring of the ambient light photosensor and the display panel.
