Patent ID: 9335852
Filing Date: 2016-05-10
CPC Classification: G02F,G06F,G09G

Claim Text:
1. A driver circuit for driving an in-cell touch display device, the in-cell touch display device comprising a panel including a plurality of data lines, a plurality of gate lines, and a plurality of touch electrodes disposed thereon, the driver circuit comprising: a level shifter to modulate one of a high gate scanning voltage or a low gate scanning voltage based on a timing signal to generate a load-free gate driving signal having a same phase and a same amplitude as a touch driving signal; and a selection circuit to select the high gate scanning voltage or the low gate scanning voltage responsive to a first state of a touch enable signal indicating a display period or to select the load-free gate driving signal responsive to a second state of the touch enable signal indicating a touch period, wherein during the display period the high gate scanning voltage or the low gate scanning voltage is provided to one or more of the gate lines of the in-cell touch display device, and wherein during the touch period the load-free gate driving signal is provided to one or more of the gate lines of the in-cell touch display device and the touch driving signal is provided to one or more of the touch electrodes.