Touch panel, touch positioning method thereof and display device

1. A touch panel, comprising a base substrate, a plurality of self-capacitive electrodes arranged in a column direction and a row direction perpendicular to the column direction and located on the base substrate, and a touch chip for determining a touch position by detecting changes in capacitance values of the respective self-capacitive electrodes during a touch period;

wherein, the plurality of self-capacitive electrodes are divided into several self-capacitive electrode groups independent of each other and several independent self-capacitive electrodes;

each of the independent self-capacitive electrodes is one of the self-capacitive electrodes respectively, and the respective independent self-capacitive electrodes are electrically connected with the touch chip through different wires;

each of the self-capacitive electrode groups includes at least two self-capacitive electrodes not adjacent to each other, and the respective self-capacitive electrodes in a same self-capacitive electrode group are electrically connected with the touch chip through a same wire, and any two of the self-capacitive electrodes in the self-capacitive electrode groups are not adjacent to each other in both the column direction and the row direction.

2. The touch panel according to claim 1 , wherein, each of the self-capacitive electrode groups includes at least two self-capacitive electrodes not adjacent to each other along the column direction or the row direction.

3. The touch panel according to claim 2 , wherein, the respective self-capacitive electrodes in a same self-capacitive electrode group are separated from each other by one independent self-capacitive electrode.

4. The touch panel according to claim 2 , wherein, each of the self-capacitive electrode groups consists of two of the self-capacitive electrodes.

5. The touch panel according to claim 2 , wherein, the self-capacitive electrodes located on the four adjacent positions of the upper, lower, left and right sides of the respective independent self-capacitive electrodes are the self-capacitive electrodes in the self-capacitive electrode groups.

6. The touch panel according to claim 1 , wherein, the respective self-capacitive electrodes in a same self-capacitive electrode group are separated from each other by one independent self-capacitive electrode.

7. The touch panel according to claim 6 , wherein, each of the self-capacitive electrode groups consists of two of the self-capacitive electrodes.

8. The touch panel according to claim 6 , wherein, any two of the independent self-capacitive electrodes are not adjacent to each other in both the column direction and the row direction.

9. The touch panel according to claim 1 , wherein, each of the self-capacitive electrode groups consists of two of the self-capacitive electrodes.

10. The touch panel according to claim 1 , wherein, any two of the independent self-capacitive electrodes are not adjacent to each other in both the column direction and the row direction.

11. The touch panel according to claim 1 , wherein, the self-capacitive electrodes located on all the adjacent positions of the respective self-capacitive electrodes in the respective self-capacitive electrode groups are the independent self-capacitive electrodes.

12. The touch panel according to claim 1 , wherein, the respective self-capacitive electrodes are formed by segmenting a common electrode layer arranged on the base substrate;

the touch chip is further used for loading common electrode signals to respective self-capacitive electrodes during a display period.

13. The touch panel according to claim 1 , wherein, opposite side edges of two adjacent self-capacitive electrodes are fold lines.

14. The touch panel according to claim 13 , wherein, the opposite side edges of the two adjacent self-capacitive electrodes which are fold lines have step-like structures having consistent shapes and matching each other.

15. The touch panel according to claim 13 , wherein, the opposite side edges of the two adjacent self-capacitive electrodes which are fold lines have concave-convex structures having consistent shapes and matching each other.

16. The touch panel according to claim 1 , wherein, the touch panel is an add-on touch panel, an on-cell touch panel, or an in-cell touch panel.

17. The touch panel according to claim 1 , wherein, the touch panel is a liquid crystal display screen or an organic light-emitting display screen.

18. A display device, comprising the touch panel according to claim 1 .

19. A touch positioning method of a touch panel, wherein, the touch panel comprises a base substrate, a plurality of self-capacitive electrodes arranged in matrix and located on the base substrate, and a touch chip for determining a touch position by detecting changes in capacitance values of the respective self-capacitive electrodes during a touch period;

wherein, the plurality of self-capacitive electrodes are divided into several self-capacitive electrode groups independent of each other and several independent self-capacitive electrodes;

each of the independent self-capacitive electrodes is one of the self-capacitive electrodes respectively, and the respective independent self-capacitive electrodes are electrically connected with the touch chip through different wires;

each of the self-capacitive electrode groups includes at least two self-capacitive electrodes not adjacent to each other, and the respective self-capacitive electrodes in a same self-capacitive electrode group are electrically connected with the touch chip through a same wire, and at least the self-capacitive electrodes located on the four adjacent positions of upper, lower, left and right sides of the respective self-capacitive electrodes in the respective self-capacitive electrode groups are the independent self-capacitive electrodes,

the touch positioning method comprises:

inputting touch detection signals to the self-capacitive electrodes in the touch panel;

receiving feedback signals from the respective self-capacitive electrodes, and according to the feedback signals, comparing capacitance values of the self-capacitive electrodes located on respective positions with a first predetermined capacitance value, and determining the position of the self-capacitive electrode with capacitance value greater than the first predetermined capacitance value as a first position;

for each of the first positions, judging whether capacitance values of the self-capacitive electrodes located on the four adjacent positions of upper, lower, left and right sides of the first position are less than a second predetermined capacitance value;

if at least two of the self-capacitive electrodes located on the four adjacent positions of the upper, lower, left and right sides of the first position have the capacitance values less than the second predetermined capacitance value, determining the first position as a ghost point position;

determining the first position except for the ghost point position as the touch position.

20. A touch positioning method of the touch panel,

wherein, the touch panel comprises a base substrate, a plurality of self-capacitive electrodes arranged in matrix and located on the base substrate, and a touch chip for determining a touch position by detecting changes in capacitance values of the respective self-capacitive electrodes during a touch period;

wherein, the plurality of self-capacitive electrodes are divided into several self-capacitive electrode groups independent of each other and several independent self-capacitive electrodes;

each of the independent self-capacitive electrodes is one of the self-capacitive electrodes respectively, and the respective independent self-capacitive electrodes are electrically connected with the touch chip through different wires;

each of the self-capacitive electrode groups includes at least two self-capacitive electrodes not adjacent to each other, and the respective self-capacitive electrodes in a same self-capacitive electrode group are electrically connected with the touch chip through a same wire, and at least the self-capacitive electrodes located on the four adjacent positions of upper, lower, left and right sides of the respective self-capacitive electrodes in the respective self-capacitive electrode groups are the independent self-capacitive electrodes,

wherein, the self-capacitive electrodes located on all the adjacent positions of the respective self-capacitive electrodes in the respective self-capacitive electrode groups are the independent self-capacitive electrodes,

wherein, the touch positioning method comprises:

inputting touch detection signals to the self-capacitive electrodes during the touch panel;

receiving feedback signals from the respective self-capacitive electrodes, according to the feedback signals, comparing capacitance values of the self-capacitive electrodes located on respective positions with a first predetermined capacitance value, and determining the position of the self-capacitive electrode with capacitance value greater than the first predetermined capacitance value as a first position;

for each of the first positions, judging whether capacitance values of the self-capacitive electrodes located on the adjacent positions of the first position are less than a second predetermined capacitance value;

if at least half of the self-capacitive electrodes located on the adjacent positions of the first position have the capacitance values less than the second predetermined capacitance value, determining the first position as a ghost point position;

determining the first position except for the ghost point position as the touch position.