Display device

A display device, comprising:

• a display panel;
• and
• an ambient light sensor which detects an intensity of ambient light on a display surface side of the display panel in response to photoelectric conversions made by respective photoelectric conversion devices provided in the display panel,
• said display device adjusting a luminance of display on the display surface in accordance with the intensity of the ambient light which intensity is detected by the ambient light sensor,
• the ambient light sensor being configured such that the photoelectric conversion devices are (i) first photoelectric conversion devices on each of which the ambient light is incident and (ii) second photoelectric conversion devices, each having a same configuration as that of each of the first photoelectric conversion devices, each of which second photoelectric conversion devices is in an environment in which light having a reference brightness is incident,
• the ambient light sensor detecting the intensity of the ambient light in accordance with outputs from the respective first photoelectric conversion devices while using outputs from the respective second photoelectric conversion devices as references, and
• (i) first regions where the respective first photoelectric conversion devices are provided and (ii) second regions where the respective second photoelectric conversion devices are provided being separately provided so as to be alternated in a surface of the display panel.