Patent ID: 8519943
Filing Date: 2013-08-27
Classification: G02F,H01L

Abstract:
1. A liquid crystal display device, comprising: a first data line and a second data line, the first and second data lines being substantially parallel to one another; a first gate line and a second gate line, the first and second gate lines being substantially parallel to one another; a display sub-pixel defined by crossing the first gate and data lines, the display sub-pixel including a first switching element and a first storage capacitor, the display sub-pixel transmitting light supplied from a light source in accordance to a data signal applied to the first data line; a sensing sub-pixel defined by crossing the second gate and data lines, the sensing sub-pixel including an image sensor, second switching element and a second storage capacitor, the sensing sub-pixel sensing light incident on the liquid crystal display device and generating charges corresponding to the sensed light; a sensing processing unit for reading normal charges stored in the second storage capacitor; a ground terminal for resetting abnormal charges stored in the second storage capacitor: and a third switching element for connecting the second data to the sensing processing unit directly and disconnecting the second data line from the ground terminal in accordance with storing the normal charge in the second storage capacitor, and for connecting the second data line to the ground terminal directly and disconnecting the second data line from the sensing processing unit in accordance with storing the abnormal charge in the second storage capacitor, wherein, when the light enters the image sensor, a photo current of the image sensor is stored in the second storage capacitor, and wherein, when the second switching element is turned on, the charges in the second storage capacitor is read by the sensing processing unit through the second switching element and the second data line.