Patent ID: 8432510
Filing Date: 2013-04-30
Classification: G02F,H01L

Abstract:
1. A liquid crystal display device comprising: a liquid crystal display panel; a light detector which is mounted on the liquid crystal display panel and has a plurality of thin-film transistor (TFT) ambient light photo-sensors composed of thin-film transistors (TFTs) that detect external light; an illumination unit which illuminates light on the liquid crystal display panel; a detection circuit connected to the light detector; and a control unit which controls the brightness of the illumination unit on the basis of the output of the detection circuit, wherein the plurality of TFT ambient light photo-sensors include first and second TFT ambient light photo-sensors for detecting light of different systems, the first and second TFT ambient light photo-sensors being alternately arranged on the same row, wherein first wires, among source wires or drain wires of the first and second TFT ambient light photo-sensors that are connected to the detection circuit, are routed to the outside of the first and second TFT ambient light photo-sensors, one of the first wires being routed to an outer side of the first TFT ambient light photo-sensor and another of the first wires being routed to an outer side of the second TFT ambient light photo-sensor that is opposed to the outer side of the first TFT ambient light photo-sensor, wherein second wires, among source wires or drain wires of the first and second TFT ambient light photo-sensors that are not connected to the detection circuit, form a single common wire that is routed between the first and second TFT ambient light photo-sensors in a snaking pattern between the patterns of the first wires and without intersecting or overlapping any portion of the first wires, and wherein the first wires that are connected to the detection circuit are arranged in parallel with the single common wire.