PHOTODETECTOR AND DISPLAY DEVICE PROVIDED WITH SAME

摘要

It is an object to provide a photodetector that can be configured to suppress dispersion of output characteristics among photodiodes and a display device provided with the photodetector. A display device provided with an active matrix substrate (20) that has a light transmissive base substrate (2), a plurality of active elements and a photodetector is used in an embodiment. The photodetector is comprised of a light shielding film (3) formed on one of main surfaces of the base substrate (2), a photodiode (1) arranged on the upper layer of the light shielding film (3), and an electrode (12) disposed in circumference of the photodiode (1) on the upper layer of the light shielding film (3). The photodiode (1) is provided with a silicon film (11) and the silicon film (11) is electrically isolated from the light shielding film (3). The electrode (12) is electrically isolated from the light shielding film (3) and the silicon film (11). The light shielding film (3) is formed so that its part is entirely overlapped with the silicon film (11) in the depth direction of the base substrate (2) and the other portions than the part are overlapped with the electrode (12).