Patent ID: 9366891
Filing Date: 2016-06-14
CPC Classification: G01J,G02F,G09G

Claim Text:
1. A liquid crystal display comprising: a liquid crystal panel including an active matrix substrate, an opposed substrate, and a liquid crystal layer interposed between the two substrates; a photodetector unit including: an ambient light photosensor reader unit for reading the charged voltage on the first capacitor, wherein the photodetector unit is disposed on a first surface of the active matrix substrate that is in contact with the liquid crystal layer, the switching element is provided in a region other than the ambient light photosensor and the ambient light photosensor reader unit, the light shielding layer entirely covers, in the photodetector unit, the first capacitor and the switching element, which are disposed on a periphery of the ambient light photosensor and entirely covered by the light-shielding layer, which is formed between the liquid crystal layer and the first capacitor, the light shielding layer is a top layer of the photodetector unit without overlapping the semiconductor layer of the ambient light photosensor, and an ambient brightness is detected by reading the voltage charged on the first capacitor at a time when a predetermined time period has been elapsed after the switching element is turned off.