Patent ID: 11900858
Assignee: LX SEMICON CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 14:
15. A display device comprising:
a source readout circuit configured to perform a touch/display operation of a panel;
a timing controller configured to determine a timing of the touch-display operation of the source readout circuit;
a power management circuit configured to generate a voltage transferred to the timing controller or the source readout circuit; and
a touch microcontroller unit configured to control an operation of the power management circuit,
wherein the power management circuit includes:
a multiplexer configured to selectively output a first input voltage or a second input voltage,
a buck circuit configured to receive an output signal of the multiplexer and control a signal level, and provide the output signal to the timing controller, and
a voltage modulation circuit disposed separately from the buck circuit and configured to determine a signal waveform transferred to the source readout circuit,
wherein the power management circuit is configured to selectively turn on/off at least a part of power transferred to an internal circuit of the voltage modulation circuit to control a signal transferred to the touch microcontroller unit.