Display panel and display device

1. A display panel, comprising:

a base substrate; and

a touch function layer on the base substrate,

wherein the display panel comprises a plurality of light transmitting regions and a plurality of pixel cell regions, a plurality of traces are connected between adjacent pixel cell regions, and there are slits between adjacent traces, and

wherein an orthographic projection of a wiring of the touch function layer on the base substrate covers an orthographic projection of the slits on the base substrates;

wherein the display panel comprises a first display region and a second display region different from the first display region, the second display region comprises the plurality of light transmitting regions and the plurality of pixel cell regions; and

wherein the number of pixel cells per unit area in the first display region is greater than the number of pixel cells per unit area in the second display region.

2. A display panel, comprising:

a base substrate; and

a touch function layer on the base substrate,

wherein the display panel comprises a plurality of light transmitting regions and a plurality of pixel cell regions, a plurality of traces are connected between adjacent pixel cell regions, and there are slits between adjacent traces, and

wherein an orthographic projection of a wiring of the touch function layer on the base substrate covers an orthographic projection of the slits on the base substrate;

wherein the display panel comprises a first display region and a second display region different from the first display region, the second display region comprises the plurality of light transmitting regions and the plurality of pixel cell regions;

wherein an area of the pixel cell regions in a unit area of the first display region is greater than an area of the pixel cell regions in a unit area of the second display region.

3. The display panel according to claim 1 , wherein the display panel comprises first trace regions extending in a first direction and second trace regions extending in a second direction, each first trace region is located between adjacent pixel cell regions in the first direction, each second trace region is located between adjacent pixel cell regions in the second direction, and the first direction and the second direction intersect each other;

first slits exist between two adjacent first traces in each first trace region, and second slits exist between two adjacent second traces in each second trace region; and

the orthographic projection of the touch function layer on the base substrate covers an orthographic projection of the first slits and the second slits on the base substrate.

4. The display panel according to claim 3 , wherein each pixel cell region comprises a plurality of sub-pixel regions, and there are third slits between adjacent sub-pixel regions,

the orthographic projection of the touch function layer on the base substrate covers an orthographic projection of the third slits on the base substrate.

5. The display panel according to claim 3 , wherein the touch function layer comprises a plurality of first touch electrodes extending substantially in the first direction and a plurality of second touch electrodes extending substantially in the second direction, the fact that the orthographic projection of the touch function layer on the base substrate covers an orthographic projection of the first slits and the second slits on the base substrate refers to:

an orthographic projection of the first touch electrodes on the base substrate covers an orthographic projection of the first slits on the base substrate; and

an orthographic projection of the second touch electrodes on the base substrate covers an orthographic projection of the second slits on the base substrate.

6. The display panel according to claim 4 , wherein the touch function layer comprises a plurality of first touch electrodes extending substantially in the first direction and a plurality of second touch electrodes extending substantially in the second direction, and the plurality of first touch electrodes and the plurality of second touch electrodes are formed with trace evading regions surrounding the sub-pixel regions.

7. The display panel according to claim 6 , wherein each third slit comprises a first sub-slit, a second sub-slit, and a third sub-slit, each sub-slit is located between adjacent sub-pixel regions, the fact that the orthographic projection of the touch function layer on the base substrate covers an orthographic projection of the third slits on the base substrate refers to:

in each trace evading region, an orthographic projection of the first touch electrodes on the base substrate covers an orthographic projection of the first sub-slit and the second sub-slit connected to each other on the base substrate; or in each trace evading region, an orthographic projection of the first touch electrodes on the base substrate covers an orthographic projection of the first sub-slit and the third sub-slit connected to each other on the base substrate; and

in each trace evading region, an orthographic projection of the second touch electrodes on the base substrate covers an orthographic projection of the second sub-slit and the third sub-slit connected to each other on the base substrate.

8. The display panel according to claim 6 , wherein, in the trace evading regions, the first touch electrodes surround edges of the sub-pixel regions.

9. The display panel according to claim 6 , wherein, in the trace evading regions, the second touch electrodes surround edges of the sub-pixel regions.

10. The display panel according to claim 5 , wherein an area of an orthographic projection of the plurality of first touch electrodes of the touch function layer on the base substrate is less than an area of an orthographic projection of the first trace regions on the base substrate, and the orthographic projection of the plurality of first touch electrodes on the base substrate at least covers an orthographic projection of all the slits of the first trace regions on the base substrate; and

an area of an orthographic projection of the plurality of second touch electrodes of the touch function layer on the base substrate is less than an area of an orthographic projection of the second trace regions on the base substrate, and the orthographic projection of the plurality of second touch electrodes on the base substrate at least covers an orthographic projection of all the slits of the second trace regions on the base substrate.

11. The display panel according to claim 5 , wherein an area of an orthographic projection of the plurality of first touch electrodes of the touch function layer on the base substrate is greater than or equal to an area of an orthographic projection of the first trace regions on the base substrate, an area of an orthographic projection of the plurality of second touch electrodes of the touch function layer on the base substrate is greater than or equal to an area of an orthographic projection of the second trace regions on the base substrate.

12. The display panel according to claim 1 , wherein the second display region is a multiplexing region for imaging and displaying.

13. The display panel according to claim 4 , wherein each of the sub-pixel regions is provided with a light emitting element, and the light emitting element comprises an anode, a light emitting layer, and a cathode that are sequentially stacked.

14. The display panel according to claim 1 , wherein the display panel is a flexible display panel.

15. A display device, comprising:

the display panel according to claim 1 ; and

a sensor disposed at a position corresponding to the second display region of the display panel and on a side of the base substrate away from a light exit side of the display panel,

wherein the sensor has a photosensitive surface which faces the display panel.