Self-capacitance touch structure having touch electrodes with side wing portions and display device thereof

1. A self-capacitance touch structure, comprising a plurality of self-capacitance touch electrodes arranged in an array, each self-capacitance touch electrode comprising a main body portion having a strip shape comprising two opposite long sides extending in a first direction, and a first side wing portion and a second side wing portion symmetrically disposed at the two opposite long sides of the main body portion, wherein

for each self-capacitance touch electrode, a recess is formed between each side wing portion and the main body portion;

the self-capacitance touch electrodes in a same row are spaced from each other, the self-capacitance touch electrodes in two adjacent rows are arranged in a staggered manner, the main body portion of at least one self-capacitance touch electrode in at least one row extends into a gap between two adjacent self-capacitance touch electrodes in another row;

the first side wing portion of at least one self-capacitance touch electrode in at least one row extends into the recess between the second side wing portion and the main body portion of the self-capacitance touch electrode, adjacent to the at least one self-capacitance touch electrode, in another row; and

the second side wing portion of at least one self-capacitance touch electrode in at least one row extends into the recess between the first side wing portion and the main body portion of the self-capacitance touch electrode, adjacent to the at least one self-capacitance touch electrode, in another row.

2. The self-capacitance touch structure according to claim 1 , wherein

for each self-capacitance touch electrode, at least two recesses are formed between each side wing portion and the main body portion, and the at least two recesses comprise a first recess and a second recess opposite to the first recess;

the first recess of at least one self-capacitance touch electrode in at least one row is provided therein with a respective side wing portion of another self-capacitance touch electrode positioned at a side of the at least one self-capacitance touch electrode close to the first recess,

the second recess of at least one self-capacitance touch electrode in at least one row is provided therein with a respective side wing portion of another self-capacitance touch electrode positioned at a side of the at least one self-capacitance touch electrode close to the second recess.

3. The self-capacitance touch structure according to claim 1 , wherein, for each self-capacitance touch electrode,

each of the first side wing portion and the second side wing portion comprises an oblique side which is connected onto a respective one of the long sides of the main body portion and is obliquely disposed with respect to the respective long side of the main body portion, wherein the recess between the first side wing portion and the main body is formed between the oblique side of the first side wing portion and one of the long sides of the main body portion, and wherein the recess between the second side wing portion and the main body is formed between the oblique side of the second side wing portion and the other long side of the main body portion.

4. The self-capacitance touch structure according to claim 1 , wherein, for each self-capacitance touch electrode,

each of the first side wing portion and the second side wing portion comprises two oblique sides which are connected on a same long side of the main body portion and are disposed opposite to each other, wherein two recesses are formed between the two oblique sides and the long side of the main body portion respectively.

5. The self-capacitance touch structure according to claim 1 , wherein, for each self-capacitance touch electrode,

each of the first side wing portion and the second side wing portion is of a shape of a trapezoid comprising an upper side, a lower side and oblique sides connected between the upper side and the lower side, wherein the upper side is overlapped with a respective long side of the main body portion.

6. The self-capacitance touch structure according to claim 5 , wherein, for each self-capacitance touch electrode,

each of the first side wing portion and the second side wing portion is of a shape of an isosceles trapezoid.

7. The self-capacitance touch structure according to claim 5 , wherein, for each self-capacitance touch electrode,

a width of the main body portion in a second direction is in a range of 2.5 mm˜4.5 mm, and the second direction is perpendicular to the first direction;

a length of the upper side of each trapezoid in the first direction is in a range of 3 mm˜5 mm;

a length of the lower side of each trapezoid in the first direction is in a range of 16 mm˜22 mm; and

a distance between the upper side and the lower side of each trapezoid in the second direction is in a range of 8 mm˜11 mm.

8. The self-capacitance touch structure according to claim 1 , further comprising a touch detection chip connected with the plurality of self-capacitance touch electrodes, wherein the touch detection chip is configured to determine a touch position by detecting a change in a capacitance value of each self-capacitance touch electrode.

9. The self-capacitance touch structure according to claim 8 , wherein each of the plurality of self-capacitance touch electrodes is connected with the touch detection chip by at least one wire, and the self-capacitance touch electrode and the wire are disposed in different layers.

10. A touch panel, comprising a self-capacitance touch structure, the self-capacitance touch structure comprising a plurality of self-capacitance touch electrodes arranged in an array, each self-capacitance touch electrode comprising a main body portion having a strip shape comprising two opposite long sides extending in a first direction, and a first side wing portion and a second side wing portion symmetrically disposed at the two opposite long sides of the main body portion of the main body portion, wherein

for each self-capacitance touch electrode, a recess is formed between each side wing portion and the main body portion;

the self-capacitance touch electrodes in a same row are spaced from each other, the self-capacitance touch electrodes in two adjacent rows are arranged in a staggered manner, the main body portion of at least one self-capacitance touch electrode in at least one row extends into a gap between two adjacent self-capacitance touch electrodes in another row;

the first side wing portion of at least one self-capacitance touch electrode in at least one row extends into the recess between the second side wing portion and the main body portion of the self-capacitance touch electrode, adjacent to the at least one self-capacitance touch electrode, in another row; and

the second side wing portion of at least one self-capacitance touch electrode in at least one row extends into the recess between the first side wing portion and the main body portion of the self-capacitance touch electrode, adjacent to the at least one self-capacitance touch electrode, in another row.

11. The touch panel according to claim 10 , further comprising a first substrate and a second substrate disposed opposite to the first substrate, wherein the self-capacitance touch structure is disposed on the second substrate, and a common electrode layer is disposed on the second substrate, and the plurality of self-capacitance touch electrodes is disposed in a same layer as the common electrode layer.

12. The touch panel according to claim 10 , wherein

for each self-capacitance touch electrode, at least two recesses are formed between each side wing portion and the main body portion, and the at least two recesses comprise a first recess and a second recess opposite to the first recess;

the first recess of at least one self-capacitance touch electrode in at least one row is provided therein with a respective side wing portion of another self-capacitance touch electrode positioned at a side of the at least one self-capacitance touch electrode close to the first recess; and

the second recess of at least one self-capacitance touch electrode in at least one row is provided therein with a respective side wing portion of another self-capacitance touch electrode positioned at a side of the at least one self-capacitance touch electrode close to the second recess.

13. The touch panel according to claim 10 , wherein, for each self-capacitance touch electrode,

each of the first side wing portion and the second side wing portion comprises an oblique side which is connected onto a respective one of the long sides of the main body portion and is obliquely disposed with respect to the respective long side of the main body portion, wherein the recess between the first side wing portion and the main body is formed between the oblique side of the first side wing portion and one of the long sides of the main body portion, and wherein the recess between the second side wing portion and the main body is formed between the oblique side of the second side wing portion and the other long side of the main body portion.

14. The touch panel according to claim 10 , wherein, for each self-capacitance touch electrode,

each of the first side wing portion and the second side wing portion comprises two oblique sides which are connected on a same long side of the main body portion and are disposed opposite to each other, wherein two recesses are formed between the two oblique sides and the long side of the main body portion respectively.

15. The touch panel according to claim 10 , wherein, for each self-capacitance touch electrode,

each of the first side wing portion and the second side wing portion is of a shape of a trapezoid comprising an upper side, a lower side and oblique sides connected between the upper side and the lower side, wherein the upper side is overlapped with the long side of the main body portion.

16. The touch panel according to claim 15 , wherein, for each self-capacitance touch electrode,

each of the first side wing portion and the second side wing portion is of a shape of an isosceles trapezoid.

17. A display device, comprising a touch screen comprising a self-capacitance touch structure, the self-capacitance touch structure comprising a plurality of self-capacitance touch electrodes arranged in an array, each self-capacitance touch electrode comprising a main body portion having a strip shape comprising two opposite long sides extending in a first direction, and a first side wing portion and a second side wing portion symmetrically disposed at the two opposite long sides of the main body portion, wherein

for each self-capacitance touch electrode, a recess is formed between each side wing portion and the main body portion;

the self-capacitance touch electrodes in a same row are spaced from each other, the self-capacitance touch electrodes in two adjacent rows are arranged in a staggered manner, the main body portion of at least one self-capacitance touch electrode in at least one row extends into a gap between two adjacent self-capacitance touch electrodes in another row;

the first side wing portion of at least one self-capacitance touch electrode in at least one row extends into the recess between the second side wing portion and the main body portion of the self-capacitance touch electrode, adjacent to the at least one self-capacitance touch electrode, in another row; and

the second side wing portion of at least one self-capacitance touch electrode in at least one row extends into the recess between the first side wing portion and the main body portion of the self-capacitance touch electrode, adjacent to the at least one self-capacitance touch electrode, in another row.

18. The display device according to claim 17 , wherein the touch panel further comprises a first substrate and a second substrate disposed opposite to the first substrate, the self-capacitance touch structure is disposed on the second substrate, and a common electrode layer is disposed on the second substrate, and the plurality of self-capacitance touch electrodes is disposed in a same layer as the common electrode layer.