In-Cell Touch Display Device
AssigneeLG Display Co., Ltd.
InventorsZeeYoung KANG, YoungDo KIM
Life of this patent
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Abstract
Disclosed is an in-cell touch display device for preventing direct current DC accumulation from being caused by a DC voltage electric field despite using a high-resistance black matrix. The in-cell touch display device may include the passivation layer that covers the back transistor. The passivation layer may block a DC voltage electric field or may disperse electric charges accumulated based on the DC voltage electric field, and thus, even in a case where the high-resistance BM is used, DC accumulation is not caused by the DC voltage electric field. Accordingly, the in-cell touch display device prevents the DC accumulation from being caused by the DC voltage electric field despite using the high-resistance BM, thereby reducing adsorption of a pollution component.
Claims9
An in-cell touch display device comprising:
- a display panel including a pixel, displaying an image in a display period, and a common electrode sensing a touch in a touch period;
- a data driver supplying a data voltage for driving of the pixel;
- a common voltage compensator generating a common voltage for driving of the common electrode;
- a back transistor supplying the common voltage to the common electrode;
- and
- a passivation layer covering the back transistor.
Dependencies are inferred from the claim text.