Abstract: Disclosed are a touch panel LCD device capable of improving touch sensing performance by preventing non-uniformity of raw touch data of left and right sides and a method of driving the same. In the touch panel LCD device, a plurality of common lines arranged in a non-display area of a panel and configured to check characteristics of the panel is connected to a load free driving (LFD) signal line by a flexible printed circuit board (FPCB) when the common lines are attached to the FPCB.

Abstract: Disclosed is a touch panel LCD device for reducing power consumption, frequency noise, or audible noise by applying an LFD signal only to touch electrodes adjacent to touch electrodes for sensing touch and by grounding other touch electrodes and a method of driving the same. The touch panel liquid crystal display device includes touch electrodes arranged on a panel in a matrix form and multiplexers configured to drive the touch electrodes. Each of the multiplexers includes a output channels, a first switching block configured to output a touch sensing signal to a first output channel of the output channels, a second switching block configured to output a load free driving (LFD) signal to second output channels adjacent to the first channel among the output channels, and a third switching block configured to output a ground signal or a floating signal to third output channels among the plurality of output channels.

Abstract: Disclosed is a touch panel LCD device for reducing power consumption, frequency noise, or audible noise by applying an LFD signal only to touch electrodes adjacent to touch electrodes for sensing touch and by grounding other touch electrodes and a method of driving the same. The touch panel liquid crystal display device includes touch electrodes arranged on a panel in a matrix form and multiplexers configured to drive the touch electrodes. Each of the multiplexers includes a output channels, a first switching block configured to output a touch sensing signal to a first output channel of the output channels, a second switching block configured to output a load free driving (LFD) signal to second output channels adjacent to the first channel among the output channels, and a third switching block configured to output a ground signal or a floating signal to third output channels among the plurality of output channels.

Abstract: Disclosed are a touch panel LCD device capable of improving touch sensing performance by preventing non-uniformity of raw touch data of left and right sides and a method of driving the same. In the touch panel LCD device, a plurality of common lines arranged in a non-display area of a panel and configured to check characteristics of the panel is connected to a load free driving (LFD) signal line by a flexible printed circuit board (FPCB) when the common lines are attached to the FPCB.