Patent ID: 8309901
Filing Date: 2012-11-13
Classification: G01J,G02F,G09G

Abstract:
1. 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, (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, wherein the first and second regions are separately provided so as to be alternated along a picture-frame in a region of the picture-frame of the display panel, and wherein in each of the first and second regions, there is provided a series circuit in which a plurality of photoelectric conversion device elements having a same configuration are connected in series in an orthogonal direction to the picture-frame; and the series circuits in the respective first regions are connected in parallel with each other, and the series circuits in the respective second regions are connected in parallel with each other.