Lg Display Co., Ltd.

Kil Tae Kim

Sung Su Han

The present disclosure provides a display device having a touch sensor, which includes a display panel including a touch sensor configured to display an image and sense presence or absence of a touch, a driver configured to time-division drive the display panel and the touch sensor, and a controller configured to control the driver, wherein the driver outputs a set voltage during a transition period between a display period in which an image is displayed on the display panel and a touch sensing period in which the touch sensor is sensed.

Display device having touch sensor and method of driving same

A touch sensing display device and a driving method thereof for improving touch noise characteristics during moving image driving are discussed. The touch sensing display device can include a display panel including touch electrodes and subpixels defined by data lines and gate lines, and a timing controller configured to output an average data value and a touch synchronization signal in which display driving periods and touch driving periods are alternately time-divided, a touch controller configured to output a charge remover capacitance compensation value, a charge remover voltage compensation value, and a gain compensation value according to the average data value. Further, the touch sensing display device can include a power controller configured to output a charge remover voltage according to the charge remover voltage compensation value, and a touch driving circuit configured to sense a touch signal from each touch electrode and output a touch sensing value.

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Paju-si, South Korea

Kil Tae Kim