Patent ID: 11914814
Assignee: LG DISPLAY CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 14:
15. A touch driving circuit comprising:
a first sensing unit configured to be electrically connected to a first touch electrode, the first sensing unit configured to sense touch of at least the first touch electrode;
a second sensing unit configured to be electrically connected to a second touch electrode, the second sensing unit configured to sense touch of at least the second touch electrode;
a first sensing control switch configured to be electrically connected between the first touch electrode and the first sensing unit;
a second sensing control switch configured to be electrically connected between the second touch electrode and the second sensing unit;
a group sensing control switch having a first end electrically connected to a node between the first touch electrode and the first sensing control switch, and a second end configured to be electrically connected to a node between the second touch electrode and the second sensing control switch;
a first multiplexer electrically connected to the first touch electrode;
a first charge adjustment unit electrically connected between the first multiplexer and the first sensing control switch, the first charge adjustment unit configured to reduce parasitic capacitance of the first touch electrode;
a second multiplexer electrically connected to the second touch electrode; and
a second charge adjustment unit electrically connected between the second multiplexer and the second sensing control switch, the second charge adjustment unit configured to reduce parasitic capacitance of the second touch electrode,
wherein the group sensing control switch has the first end electrically connected to a node between the first charge adjustment unit and the first sensing control switch, and the second end electrically connected to a node between the second charge adjustment unit and the second sensing control switch.