Patent ID: 11928300
Assignee: LG DISPLAY CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 27:
28. A touch display device, comprising:
a display panel having disposed therein:
a plurality of X-touch electrode lines, which extend in a first direction and to which a touch driving signal is transmitted through a plurality of X-touch lines; and
a plurality of Y-touch electrode lines, which extend in a second direction and transmit a touch sensing signal through a plurality of Y-touch lines; and

a touch driving circuit configured to supply the touch driving signal to the plurality of X-touch electrode lines and receive the touch sensing signal from the plurality of Y-touch electrode lines to sense a touch, the touch driving circuit including:
a differential amplifier which is electrically connected to a first Y-touch line and a second Y-touch line among the plurality of Y-touch lines, and generates an output signal proportional to a difference between a first touch sensing signal received from a first Y-touch electrode line among the plurality of Y-touch electrode lines through the first Y-touch line and a second touch sensing signal received from a second Y-touch electrode line among the plurality of Y-touch electrode lines through the second Y-touch line; and
an integrator for integrating an output signal transmitted from the differential amplifier or integrating a signal in which the output signal is processed;

wherein a plurality of overlapping areas in which at least some of the plurality of X-touch lines overlap at least some of the plurality of Y-touch lines have areas that are different in size from each other.