Patent ID: 8045129
Filing Date: 2011-10-25
Classification: G02F

Abstract:
1. A display device comprising: a plurality of gate lines and a plurality of data lines crossing each other on a first substrate, to define a pixel; a first thin film transistor in a portion where the gate lines and the data lines cross each other; a plurality of position detection lines on the first substrate, the position detection lines spaced a constant distance from the data lines and crossing the gate lines; a second thin film transistor for detecting a position, in a portion on the first substrate where the gate lines and the position detection lines cross each other; a protrusion pattern protruding from a second substrate and corresponding to a drain electrode of the second thin film transistor; and a transparent conductive layer on the protrusion pattern, electrically connected to the drain electrode when touching, wherein x-axis position coordinates are detected by bringing the transparent conductive layer disposed on the protrusion pattern in contact with the second drain electrode of the second thin film transistor through touching and y-axis position coordinates are detected with the gate control signal supplied to turn on the second thin film transistor.