Data line demultiplexer, display substrate, display panel and display device

1. A data line demultiplexer, comprising a switching module, a plurality of switching signal terminals and a plurality of data signal terminals, wherein

the switching module is respectively connected to the plurality of switching signal terminals, the plurality of data signal terminals and M columns of pixel units in a display device, each column of pixel units comprising N columns of sub-pixels, where M is a positive integer, and N is an integer greater than 1;

any two adjacent columns of sub-pixels are controlled by different switching signal terminals, and the switching module selectively communicates each of the data signal terminals with at least two columns of sub-pixels under control of the plurality of switching signal terminals, wherein every two columns of sub-pixels that are connected with one data signal terminal are spaced apart by an odd number of columns of sub-pixels;

the switching module comprises k transistors, where k is the number of columns of sub-pixels in the display device; and each of the k transistors has a gate electrode connected to one switching signal terminal, a first electrode connected to one data signal terminal, and a second electrode connected to one column of sub-pixels; and

the k transistors are divided into N groups and each group comprises M transistors; and the gate electrodes of the M transistors in each group are connected to the same switching signal terminal, and the M columns of sub-pixels are connected to the second electrodes of the M transistors in each group are sub-pixels of the same color.

2. The data line demultiplexer according to claim 1 , wherein every two columns of sub-pixels that are connected with one data signal terminal are spaced apart by one column of sub-pixels that are connected with other data signal terminals.

3. The data line demultiplexer according to claim 1 , wherein the data line demultiplexer comprises N switching signal terminals.

4. The data line demultiplexer according to claim 1 , wherein

each column of pixel units comprises three columns of sub-pixels of different colors; and

the data line demultiplexer comprises three switching signal terminals.

5. The data line demultiplexer according to claim 1 , wherein

the k transistors are all N-type transistors.

6. The data line demultiplexer according to claim 1 , wherein the data line demultiplexer comprises M data signal terminals.

7. The data line demultiplexer according to claim 6 , wherein the switching module selectively and respectively communicates each of the data signal terminals with the N columns of sub-pixels under control of the plurality of switching signal terminals.

8. The data line demultiplexer according to claim 1 , wherein the data line demultiplexer comprises N switching signal terminals; and

the gate electrodes of transistors of any two groups are connected to different switching signal terminals, and the second electrodes of transistors of any two groups are connected to sub-pixels of different colors.

9. The data line demultiplexer according to claim 8 , wherein

the data line demultiplexer comprises M data signal terminals;

each of the data signal terminals is respectively connected to the first electrodes of the N transistors of the k transistors, and two adjacent transistors of the N transistors are spaced apart by one transistor in the data line demultiplexer; and

the second electrode of the i th transistor in the k transistors is connected to the i th column of sub-pixels, where i is a positive integer less than or equal to k.

10. The data line demultiplexer according to claim 8 , wherein

the data line demultiplexer comprises M data signal terminals;

each of the data signal terminals is respectively connected to the first electrodes of N adjacent transistors of the k transistors; and

among the N columns of sub-pixels connected to the second electrodes of the N adjacent transistors, every two columns of sub-pixels that are connected with one data signal terminal are spaced apart by one column of sub-pixels that are connected with other data signal terminals.

11. A display substrate, comprising the data line demultiplexer according to claim 1 .

12. A display panel, comprising the display substrate according to claim 11 .

13. A display device, comprising the display panel according to claim 12 .

14. A driving method for a data line demultiplexer, the data line demultiplexer comprising a switching module, a plurality of switching signal terminals, and a plurality of data signal terminals, wherein the switching module is respectively connected to the plurality of switching signal terminals, the plurality of data signal terminals and M columns of pixel units in a display device, each column of pixel units comprises N columns of sub-pixels of different colors, where M is a positive integer, and N is an integer greater than 1; any two adjacent columns of sub-pixels are controlled by different switching signal terminals, and the switching module selectively communicates each of the data signal terminals with at least two columns of sub-pixels under control of the plurality of switching signal terminals, every two columns of sub-pixels that are connected with one data signal terminal are spaced apart by an odd number of columns of sub-pixels; the switching module comprises k transistors, where k is the number of columns of sub-pixels in the display device, and each of the k transistors has a gate electrode connected to one switching signal terminal, a first electrode connected to one data signal terminal, and a second electrode connected to one column of sub-pixels; and the k transistors are divided into N groups and each group comprises M transistors, the gate electrodes of the M transistors in each group are connected to the same switching signal terminal, and the M columns of sub-pixels connected to the second electrodes of the M transistors in each group are sub-pixels of the same color, and the method comprising:

during a process of displaying one frame of image, sequentially outputting, by the plurality of switching signal terminals, voltage signals for turning on corresponding transistors in the switching module, a voltage polarity of the data signal output by each of the plurality of data signal terminals remaining unchanged, and voltage polarities of data signals output by adjacent data signal terminals being opposite to each other; and

when a next frame of image is displayed, changing the voltage polarity of the data signal output by each of the plurality of data signal terminals.

15. The driving method according to claim 14 , wherein during a process of displaying the next frame of image, the plurality of switching signal terminals sequentially output voltage signals that turn on corresponding transistors in the switching module.

16. The driving method according to claim 14 , wherein every two columns of sub-pixels that are connected with one data signal terminal are spaced apart by one column of sub-pixels that are connected with other data signal terminals.