Patent ID: 11861108
Assignee: LG DISPLAY CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 10:
11. A display device having a touch sensor, comprising:
a display panel including a plurality of touch electrodes; and
a touch driving circuit including readout integrated circuits (ICs), each readout IC including a touch sensing circuit and an amplifier output control circuit,
wherein the touch sensing circuit is configured to apply a touch driving signal to the touch electrodes and amplify charges flowing from the touch electrodes based on an amplifier reset signal so as to generate an amplifier output voltage,
wherein the amplifier output control circuit is configured to differentially adjust a toggle timing of the amplifier reset signal depending on positions of the touch electrodes, or differentially adjust a voltage amplitude of the touch driving signal depending on the positions of the touch electrodes so as to differentially control a level of the amplifier output voltage depending on the positions of the touch electrodes, and
wherein the amplifier output control circuit is configured to differentially adjust an on-start timing of the amplifier reset signal and an on duty of the amplifier reset signal depending on the positions of the touch electrodes.