Patent ID: 7580084
Filing Date: 2009-08-25
Classification: G02F,H04N

Abstract:
1. A liquid crystal display device, comprising: a data line supplying a data voltage; a gate line intersecting the data line; a first thin film transistor “TFT”) located at an intersection area of the gate line and the data line; a photo sensing device operable to sense light, wherein the photo sensing device is driven by drive voltages other than the data voltage, wherein the photo sensing device comprises a storage capacitor operable to store charge generated by the light and a photo-TFT that is supplied at least one of the drive voltages; and a first drive voltage supply line formed in parallel to the gate line to supply a first drive voltage to the photo TFT, wherein the drive voltages comprise the first drive voltage, wherein the photo-TFT comprises a first source electrode electrically connected to the first drive voltage supply line by a transparent electrode pattern.