Patent ID: 9563310
Date: 2017-02-07
CPC Classifications: G06F

Claim:
1. A touch sensing display device comprising: a touch screen integrated with a display panel including data lines, gate lines crossing the data lines, touch electrodes for sensing a touch input, and pixels at crossings of the gate lines and the data lines, the gate lines separate and disconnected from the touch electrodes; and a touch sensing circuit configured to operate according to a control signal, the control signal including a first level for a first period and a second level for a second period, wherein: a common voltage is supplied to all the touch electrodes to display an image on the pixels during the first period of the control signal in which the control signal is at the first level; the touch sensing circuit does not supply a touch driving signal to any of the touch electrodes during a first part of the second period of the control signal in which the control signal is at the second level, and a voltage at the gate lines is changed from a first voltage to a second voltage during the first part of the second period of the control signal in which the control signal is at the second level, the first part of the second period of the control signal following the first period of the control signal; and the touch sensing circuit supplies the touch driving signal to one or more of the touch electrodes during a second part of the second period of the control signal in which the control signal is at the second level, the second part of the second period of the control signal being subsequent to the first part of the second period of the control signal, touch sensing signals from the one or more touch electrodes responsive to the touch drive signal being used to detect the touch input.