Display device, joint display and backlight module

1. A display device, comprising:

a display element comprising a main display region and a periphery display region located at one side of the main display region, the main display region comprising a plurality of pixels, the periphery display region comprising a plurality of pixels, wherein a pixel density of the periphery display region increases along a first direction, and the first direction points away from the main display region toward the periphery display region;

an image compensation element comprising a compensation portion corresponding to the periphery display region, and the image compensation element extending an image of the periphery display region to one side of the periphery display region away from the main display region;

a backlight module providing first light beams to the main display region and providing second light beams to the periphery display region, and an intensity of the first light beams being smaller than an intensity of the second light beams.

2. The display device of claim 1 , wherein the backlight module comprises a brightness enhancement element corresponding to the periphery display region.

3. The display device of claim 2 , wherein the backlight module further comprises a light guiding plate, the light guiding plate comprises a plurality of first micro-members located corresponding to the periphery display region, and the first micro-members constitute the brightness enhancement element.

4. The display device of claim 3 , wherein the light guiding plate further comprises a plurality of second micro-members located corresponding to the main display region, the first micro-members and the second micro-members are located on a top surface of the light guiding plate, and a density of the first micro-members is greater than a density of the second micro-members.

5. The display device of claim 3 , wherein the first micro-members are selected from the group of prisms, V-shaped grooves, and columnar lens.

6. The display device of claim 1 , wherein the backlight module further comprises a light guiding plate, the light guiding plate comprises a bottom surface, the bottom surface comprises a first region corresponding to the main display region and a second region corresponding to the periphery display region, and the second region comprises a plurality of second dots.

7. The display device of claim 6 , wherein the first region comprises a plurality of first dots, a size of each first dot is the same as a size of second dot, and a dot density of the first region is less than a dot density of the second region.

8. The display device of claim 6 , wherein the first region comprises a plurality of first dots, a size of each first dot is greater than a size of each second dot of the second region, and a dot density of the first region is the same as a dot density of the second region.

9. The display device of claim 1 , wherein the periphery display region comprises a stripe region and two corner regions, the strip region is located between the two corner regions, the second light beams comprise a first part of light provided to the stripe region and a second part of light provided to the corner regions, a light density of the first part is smaller than a light density of the second part.

10. The display device of claim 1 , wherein a pixel density of the main display region is smaller than a pixel density of the periphery display region.

11. The display device of claim 1 , wherein the display element further comprises a non-display region located at one side of the periphery display region away from the main display region, and the compensation portion extends the image of the periphery display region to the non-display region.

12. The display device of claim 11 , wherein the compensation portion comprises an arc-shaped surface which defines a convex lens structure, and the compensation portion covers the periphery display region and the non-display region.

13. The display device of claim 11 , wherein the compensation portion defines a plurality of light guiding channels independent from each other, the plurality of light guiding channels transmit light from the periphery display region to the side of the periphery display region away from the main display region.

14. The display device of claim 13 , wherein the compensation portion comprises a light incident surface and a light emitting surface, the light incident surface corresponds to the periphery display region, an area of the light emitting surface is greater than an area of the light incident surface, and each light guiding channel extends along a direction from the light incident surface to the light emitting surface.

15. The display device of claim 14 , wherein the compensation portion comprises a plurality of light guiding fibers each extending along the direction from the light incident surface to the light emitting surface, each light guiding channel is defined by a corresponding light guiding fiber of the plurality of light guiding fibers, and an area of the light guiding fiber on the light emitting surface is greater than an area of the light guiding fiber on the light incident surface.

16. The display device of claim 14 , wherein a section area of the light guiding fiber increases along the direction from the light incident surface to the light emitting surface.

17. The display device of claim 14 , wherein a section area of the light guiding fiber is maintained constant.

18. A joint display, comprising:

at least two display elements joining each other, one of the at least two display elements comprising a main display region and a periphery display region located one side of the main display region, the main display region comprising a plurality of pixels, the periphery display region comprising a plurality of pixels, wherein a pixel density of the periphery display region increases along a first direction, and the first direction points away from the main display region toward the periphery display region;

an image compensation element comprising a compensation portion corresponding to the periphery display region, and the image compensation element extending the image of the periphery display region to one side of the periphery display region away from the main display region; and

a backlight module providing first light beams to the main display region and providing second light beams to the periphery display region, and an intensity of the first light beams being smaller than an intensity of the second light beams.

19. The joint display of claim 18 , wherein said one of the at least two display elements further comprises a non-display region located at one side of the periphery display region away from the main display region, and the compensation portion extends the image of the periphery display region to the non-display region.