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

Claim 0:
1. A touch display device comprising:
a display panel including a plurality of touch electrodes; and
a touch driving circuit configured to drive the plurality of touch electrodes to sense touch of the display panel, the touch driving circuit including:
a first sensing unit configured to be electrically connected to a first touch electrode of the plurality of touch electrodes, 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 of the plurality of touch electrodes, the second sensing unit configured to sense touch of at least the second touch electrode;
a first sensing control switch configured to electrically connect the first touch electrode and the first sensing unit;
a second sensing control switch configured to electrically connect the second touch electrode and the second sensing unit; and
a first 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,

wherein during at least a partial period of a first sensing period, at least one of the first sensing control switch and the second sensing control switch is in a turn-on state to connect together at least one of the first touch electrode and the first sensing unit, and the second touch electrode and the second sensing unit; and
during the first sensing period, the first group sensing control switch maintains a turn-off state to disconnect the first sensing unit from the second touch electrode and to disconnect the second sensing unit from the first touch electrode,
wherein during at least a partial period of a second sensing period, the first group sensing control switch is in a turn-on state and
while the first group sensing control switch is in the turn-on state, either the first sensing control switch is in the turn-on state to connect the first sensing unit to the first touch electrode and the second touch electrode and the second sensing control switch is in the turn-off state, or the second sensing control switch is in the turn-on state to connect the second sensing unit to the first touch electrode and the second touch electrode and the first sensing control switch is in the turn-off state.