Touch display device, display panel and touch driving method
AssigneeLG Display Co., Ltd.
InventorDeukSu LEE
Life of this patent
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Abstract
A touch display device includes a plurality of layers such as a substrate, a circuit layer disposed over the substrate and including a circuit for driving a plurality of subpixels, a pixel layer disposed over the circuit layer and including the plurality of subpixels, an encapsulation layer disposed to cover the pixel layer, a touch electrode layer disposed over the encapsulation layer and including a plurality of touch electrodes capable of sensing both finger touch and pen touch in an integrated manner, and a touch circuit that senses the finger touch in a first touch period and senses the pen touch in a second touch period through touch lines connected to the plurality of touch electrodes.
Claims20
A touch display device comprising:
- a substrate;
- a circuit layer disposed over the substrate and including a circuit for driving a plurality of subpixels;
- a pixel layer including the plurality of subpixels disposed over the circuit layer;
- an encapsulation layer disposed to cover the pixel layer;
- a touch electrode layer including a plurality of touch electrodes for sensing both finger touch and pen touch disposed over the encapsulation layer;
- and
- a touch circuit configured to sense the finger touch in a first touch period and sense the pen touch in a second touch period through touch lines connected to the plurality of touch electrodes.
A display panel comprising:
- a substrate;
- a circuit layer disposed on the substrate and including a circuit for driving a plurality of subpixels;
- a pixel layer including the plurality of subpixels disposed over the circuit layer;
- an encapsulation layer disposed to cover the pixel layer;
- and
- a touch electrode layer including a plurality of touch electrodes for sensing both finger touch and pen touch disposed over the encapsulation layer.
A touch driving method for driving a display panel including a touch electrode layer in which a first touch electrode, a second touch electrode, and a third touch electrode are formed, the method comprising:
- in a first touch period, supplying a first touch driving signal having a first voltage level to the first touch electrode or the second touch electrode, and sensing a finger touch using a touch sensing signal transmitted from the third touch electrode;
- and
- in a second touch period different from the first touch period, controlling the first touch electrode and the second touch electrode to sequentially form a closed loop, supplying a second touch driving signal having a second voltage level, and sensing a pen touch.
Dependencies are inferred from the claim text.