AREA SENSOR AND DISPLAY DEVICE HAVING AREA SENSOR

摘要

A liquid crystal display device (100) (display device) of the present invention includes a liquid crystal panel (20) including a liquid crystal layer (23) between an active matrix substrate (21) and a counter substrate (22). The liquid crystal display device (100) has an area sensor function that detects an input position of an external input by detecting an image on a surface (100a) (target surface for detection) of the liquid crystal panel (20). The liquid crystal display device (100) includes: the liquid crystal panel (20) (position detecting section) including a plurality of optical sensor elements (30) detecting an intensity of light received, the liquid crystal panel (20) detecting the input position by causing the plurality of optical sensor elements to detect the image on the surface of the liquid crystal panel; and a reflectance changing section (45) changing a reflectance of light in response to application of pressure onto the surface (100a) of the liquid crystal panel (20).