| 摘要 |
A liquid crystal display device of the present invention includes a liquid crystal panel (20) having an area sensor function of detecting the position of an input from an outside source by detecting an image on a panel surface. The liquid crystal panel (20) has a plurality of light sensor elements (30) that detect the intensity of received light. The liquid crystal panel (20) is provided with: a light intensity sensor section (50), constituted by those ones of the light sensor elements (30) which are disposed in an outermost peripheral part of a display region (20a) of the liquid crystal panel (20), which detects the intensity of light in an environment where the device is placed; and visible light sensors (31A) and infrared light sensors (31B), constituted by those ones of the light sensor elements (30) other than those constituting the light intensity sensor section (50), which detect the position of an input from an outside source by the light sensor elements detecting an image on the panel surface. This allows some of the light sensor elements to be used as a light intensity sensor to more accurately measure light intensity.
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