Patent ID: 9612646
Date: 2017-04-04
CPC Classifications: G06F,G09G

Claim:
1. A power controller for a touch sensing display device supporting a pixel driving period and a touch driving period in each frame period, the display device comprising a data driving circuit to drive data signals onto data lines of a display panel during the pixel driving period of each frame period and being powered by a first power supply voltage and a second power supply voltage, the power controller comprising: a power control circuit to cut off the first power supply voltage and the second power supply voltage from powering the data driving circuit during the touch driving period of each frame period, touch data being generated from signals of touch sensing lines of the display panel during the touch driving period, wherein the first power supply voltage that is cut off during the touch driving period of each frame period is a power supply voltage for an analog portion of the data driving circuit, and wherein the second power supply voltage that is cut off during the touch driving period of each frame period is a power supply voltage for a digital portion of the data driving circuit.