Display panels and display devices

Abstract

This disclosure relates to the technology of displays, and more particularly to display panels and display devices. The display panel includes a display substrate (PNL), a light-gathering layer (LL), and a filter layer (CL), the display substrate having a plurality of array-distributed light-emitting elements (LDs). The light-gathering layer (LL) is provided on one side of the display substrate and has a plurality of light-transmitting holes (LH), one of which overlaps with one light-emitting element (LD), and the light-gathering layer (LL) is made of a light-transmitting material. The filter layer (CL) covers the light-gathering layer and includes a plurality of filter portions (CF), at least some of which are different in color, one filter portion (CF) fills one light-transmitting hole (LH), the refractive index of the filter portion (CF) is greater than that of the light-gathering layer (LL), and the light-transmitting holes (LH) expand along the direction away from the display substrate (PNL). The front brightness can be improved and the thickness can be reduced without increasing power consumption.

Claims

1. A display panel comprising a display substrate, a light-collecting layer, and a filter layer, The display substrate has a plurality of array-distributed light-emitting elements, The light-collecting layer is provided on one side of the display substrate and has a plurality of light-transmitting holes, one of which overlaps with one of the light-emitting elements, and the light-collecting layer is made of a light-transmitting material. The filter layer covers the light-collecting layer and includes a plurality of filter portions, at least some of which are of different colors, one of which fills one of which light-transmitting holes, the refractive index of which is greater than that of the light-collecting layer, and the light-transmitting holes are expanded in a direction away from the display substrate. A display panel characterized by the following features.

2. The display panel further comprises a light-absorbing layer, The light-absorbing layer is provided on the same side of the display substrate together with the light-emitting element, and the light-absorbing layer overlaps with the light-collecting layer and at most partially overlaps with the light-transmitting holes. The display panel according to feature 1.

3. The light-emitting element includes a first light-emitting element, a second light-emitting element, and a third light-emitting element, each having different light-emitting colors. The light-transmitting hole overlapping the first light-emitting element is the first light-transmitting hole, and the filter portion filling the first light-transmitting hole is the first filter portion; the light-transmitting hole overlapping the second light-emitting element is the second light-transmitting hole, and the filter portion filling the second light-transmitting hole is the second filter portion; the light-transmitting hole overlapping the third light-emitting element is the third light-transmitting hole, and the filter portion filling the third light-transmitting hole is the third filter portion; The thickness of the first filter section is smaller than the thickness of the second and third filter sections. The display panel according to feature 2.

4. The refractive index of the first filter section is greater than that of the third filter section, and the refractive index of the third filter section is greater than that of the second filter section. The display panel according to feature 3.

5. The first light-emitting element emits red light, the second light-emitting element emits green light, and the third light-emitting element emits blue light. The first filter section is red, the second filter section is green, and the third filter section is blue. The display panel according to feature 3.

6. The orthographic projection of the light-absorbing layer onto the display substrate is located within the orthographic projection of the light-collecting layer onto the display substrate, and is located outside the orthographic projection of the light-transmitting holes onto the display substrate. The display panel according to feature 2.

7. The light-collecting layer is provided at least partially on the surface of the light-absorbing layer that is separated from the display substrate. The display panel according to feature 2.

8. The thickness of the filter layer is greater than the thickness of the light-collecting layer, and the light-absorbing layer is provided on the surface of the filter layer that is away from the display substrate. The display panel according to feature 2.

9. On the surface of the light-collecting layer that is separated from the display substrate, light-absorbing grooves are formed that are recessed into the display substrate, and the light-absorbing layer is filled into the light-absorbing grooves. The display panel according to feature 2.

10. The number of light-absorbing grooves is multiple, the light-absorbing grooves have an annular structure, one light-absorbing groove surrounds the outside of one light-transmitting hole, and two adjacent light-absorbing grooves surrounding two light-transmitting holes share a portion of the area. The display panel according to feature 9.

11. The light-collecting layer includes a plurality of light-collecting islands distributed at intervals, and one of the light-transmitting holes is provided in each of the light-collecting islands. The display panel according to feature 4.

12. The light-absorbing layer and the light-collecting layer are provided on the same surface of the display substrate, and the light-absorbing layer separates each of the light-collecting islands. The display panel according to feature 11.

13. The light-absorbing layer and some of the light-concentrating islands are provided on the same surface of the display substrate, and some of the light-concentrating islands are provided on the surface of the light-absorbing layer that is away from the display substrate. The display panel according to feature 11.

14. The light-collecting island provided with the first light-transmitting hole is the first light-collecting island, the light-collecting island provided with the second light-transmitting hole is the second light-collecting island, and the light-collecting island provided with the third light-transmitting hole is the third light-collecting island. The first light-gathering island and the light-absorbing layer are provided on the same surface of the display substrate, and the second light-gathering island and the third light-gathering island are provided on the surface of the light-absorbing layer that is away from the display substrate. The display panel according to feature 11.

15. The thickness of the region where the light-absorbing layer and the second light-gathering island overlap is greater than the thickness of the region where the light-absorbing layer and the third light-gathering island overlap. The display panel according to feature 14.

16. The thickness of the region where the light-absorbing layer and the second light-collecting island overlap is 1.5 μm or more and 2 μm or less. The thickness of the region where the light-absorbing layer and the third light-collecting island overlap is 1 μm or more and 1.5 μm or less. The display panel according to feature 15.

17. The boundary of the light-transmitting hole is located elsewhere than the boundary of the light-emitting element that overlaps it, and the distance between the boundary of the light-transmitting hole and the boundary of the light-emitting element that overlaps it in the direction parallel to the display substrate is the expansion distance of the light-transmitting hole. The expansion distance of the first light-transmitting hole is greater than the expansion distance of the third light-transmitting hole, and the expansion distance of the third light-transmitting hole is greater than the expansion distance of the second light-transmitting hole. The display panel according to feature 4.

18. The expansion distance of the first light-transmitting pore is 2.5 μm or more and 3.5 μm or less. The expansion distance of the second light-transmitting pore is greater than 0 and less than or equal to 1 μm. The expansion distance of the third light-transmitting pore is 1 μm or more and 2 μm or less. The display panel according to feature 17.

19. The thickness of the first filter section is 2.5 μm or more and 3.5 μm or less. The thickness of the second filter section and the third filter section is 3.4 μm or more and 4 μm or less. The display panel according to feature 17.

20. The display substrate includes a drive backplate, a sealing layer, and a light-transmitting flat layer. The light-emitting element is provided on one side of the drive backplate, The sealing layer covers the light-emitting element, and the light-collecting layer and the light-absorbing layer are provided on the side of the sealing layer away from the drive backplate. The light-transmitting flat layer covers the filter layer, and the refractive index of the light-transmitting flat layer is smaller than that of the filter layer. The display panel according to any one of claims 2 to 19.

21. Includes a display panel according to any one of claims 1 to 20 A display device characterized by the following features.

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