Patent ID: 8493518

Claim:
An LCD with an integrated touch panel, comprising: a thin film transistor array panel comprising: a first insulating substrate; a gate line formed on the first insulating substrate so as to extend in a first direction; a data line formed in a second direction and intersecting the gate line; a thin film transistor (TFT) electrically connected to the gate line and the data line; a first sensor line extended in the first direction; a second sensor line extended in the second direction; a first dummy line extended in the first direction to intersect the data lines, and a second dummy line extended in the second direction to intersect the gate line, and a common electrode panel disposed on the thin film transistor array panel and comprising a common electrode, wherein the first sensor line and the second sensor line are connected to first and second electrodes formed on the first insulating substrate, respectively, and wherein a common voltage applied to the common electrode is applied to the first sensor line and the second sensor line through the first and second electrodes when an external pressure is applied to the touch panel in the vicinity of the electrodes; and a first comparator connected to the first sensor line and the first dummy line and amplifying a voltage difference between the first sensor line and the first dummy line and then outputting the amplified voltage difference; and, a second comparator connected to the second sensor line and the second dummy line and amplifying a voltage difference between the second sensor line and the second dummy line and then outputting the amplified voltage difference.