Touch display panel and display device

1. A touch display panel, comprising a substrate;

a plurality of scan lines and a plurality of data lines, the scan lines and data lines being arranged at a first side of the substrate;

pixel units positioned in regions encircled by adjacent scan lines and adjacent data lines, wherein

pixel electrodes in each pixel unit comprise a plurality of strip electrodes extending along a first direction and arranging along a second direction, wherein the first direction intersects the second direction;

two adjacent pixel units form a unit group, and the two pixel units in the unit group are respectively a first pixel unit and a second pixel unit, wherein the first pixel unit comprises a first part extending along the first direction, and a second part extending from an end region of the first part to the second pixel unit;

the second pixel unit comprises a third part extending along the first direction, and a fourth part extending from an end region of the third part to the first pixel unit;

the first pixel unit and the second pixel unit are in concave-convex fit arrangement; and

a length of strip electrodes in the second part and the fourth part along the first direction is less than a length of strip electrodes in the first part and the third part along the first direction;

a plurality of touch electrodes arranged at the first side of the substrate and arranged as an array, wherein each touch electrode overlaps a plurality of pixel units in a direction vertical to the substrate; and

a plurality of touch lines arranged at the first side of the substrate, wherein each touch line is electrically connected to a corresponding touch electrode via a through hole positioned between the second part and the fourth part.

2. The panel according to claim 1 , wherein

each pixel unit comprises two strip electrodes which are respectively a first strip electrode and a second strip electrode, wherein

the first strip electrode is positioned in the first part or the third part;

the second strip electrode is positioned in the second part or the fourth part; and

the second strip electrode of the second part of the first pixel unit and the second strip electrode of the fourth part of the second pixel unit in a unit group extend along opposite directions.

3. The panel according to claim 1 , wherein the length of strip electrodes in the second part and the fourth part along the first direction is 40%-60% of the length of strip electrodes in the first part and the third part along the first direction.

4. The panel according to claim 1 , wherein

touch lines are arranged along an extension direction of data lines between the first pixel unit and the second pixel unit, and correspond to positions of data lines.

5. The panel according to claim 1 , wherein touch electrodes are multiplexed as common electrodes.

6. The panel according to claim 1 , wherein touch electrodes are used for self-capacitive touch detection.

7. The panel according to claim 1 , further comprising a planarization layer arranged on the substrate, wherein

touch lines are arranged at one side of the planarization layer far away from the substrate;

one side of each touch line away from the substrate is covered with a first passivation layer; through holes are formed in the passivation layer; and

touch electrodes are arranged at one side of the first passivation layer far away from the substrate, and are electrically connected with touch lines via through holes.

8. A touch display device, comprising a touch display panel, wherein the touch display panel comprises:

a substrate;

a plurality of scan lines and a plurality of data lines, the scan lines and data lines being arranged at a first side of the substrate;

pixel units positioned in regions encircled by adjacent scan lines and adjacent data lines, wherein

pixel electrodes in each pixel unit comprise a plurality of strip electrodes extending along a first direction and arranging along a second direction, wherein the first direction intersects the second direction;

two adjacent pixel units form a unit group, and the two pixel units in the unit group are respectively a first pixel unit and a second pixel unit, wherein the first pixel unit comprises a first part extending along the first direction, and a second part extending from an end region of the first part to the second pixel unit;

the second pixel unit comprises a third part extending along the first direction, and a fourth part extending from an end region of the third part to the first pixel unit;

the first pixel unit and the second pixel unit are in concave-convex fit arrangement; and

a length of strip electrodes in the second part and the fourth part along the first direction is less than a length of strip electrodes in the first part and the third part along the first direction;

a plurality of touch electrodes arranged at the first side of the substrate and arranged as an array, wherein each touch electrode overlaps a plurality of pixel units in a direction vertical to the substrate; and

a plurality of touch lines arranged at the first side of the substrate, wherein each touch line is electrically connected to a corresponding touch electrode via a through hole positioned between the second part and the fourth part.

9. The device according to claim 8 , wherein

touch lines are arranged along an extension direction of data lines between the first pixel unit and the second pixel unit, and are corresponding to positions of data lines.

10. The device according to claim 8 , wherein touch electrodes are used for self-capacitive touch detection.