TOUCH PANEL DISPLAY DEVICE AND A DRIVING METHOD THEREOF, CAPABLE OF DIFFERENTIATING EXTERNAL LIGHT AND LIGHT GENERATED FROM A LIGHT SOURCE

摘要

PURPOSE: A touch panel display device and a driving method thereof are provided to improve touch recognition rate at a gray zone by adjusting PWM(Pulse Width Modulation) duty of light source of a back light according to the illumination of the external light sensed in photosensor.;CONSTITUTION: A touch panel(102) indicates an image. A gate driver(104) drives a plurality of gate lines on a touch panel. A data driver(106) drives a plurality of data lines on a touch panel. A timing controller(108) controls the drive timing of a data driver and a gate driver. A backlight unit(110) irradiates the light on the touch panel. An inverter(112) generates a driving voltage of a light source included in the backlight unit.;COPYRIGHT KIPO 2010