Display device integrated with touch screen panel and method of driving the same

摘要

A display device integrated with a touch screen panel, and a method of driving the same, can prevent parasitic capacitance that would otherwise increase the load during a touch operation, lower the accuracy of touch sensing, or make touch sensing impossible. The display device includes data lines, gate lines, and a plurality of electrodes spaced apart from each other. A common voltage is applied to the electrodes in a display driving mode and a touch drive signal is applied to one or more of the electrodes in a touch driving mode. A data voltage is applied to the data lines in the display driving mode. A scan signal is supplied sequentially to the gate lines in the display driving mode and the touch drive signal or a signal corresponding to the touch drive signal is applied to one or more of the gate lines in the touch driving mode.

主权项

1. A display device integrated with a touch screen panel, comprising:
a panel comprising a plurality of data lines arranged in a first direction, a plurality of gate lines arranged in a second direction, and a plurality of electrodes grouped into a plurality of electrode groups, a plurality of pixels of the display device defined at intersections of the plurality of data lines and the plurality of gate lines; a touch integrated circuit which applies at a time, a touch drive signal to one electrode group selected from among the plurality of electrode groups as a touch sensing electrode group during a touch driving mode; a data driver unit which supplies a data voltage to the plurality of data lines during a display driving mode; and a gate driver unit which supplies a scan signal sequentially to the plurality of gate lines during the display driving mode, wherein in the touch driving mode, the gate driver unit provides a signal that is offset from the touch drive signal by a DC offset voltage to at least one gate line from among the plurality of gate lines corresponding to the selected touch sensing electrode group and further to at least another gate line from among the plurality of gate lines corresponding to another electrode group adjacent to the selected touch sensing electrode group from among the plurality of electrode groups.