Display panel and manufacturing method therefor, and display apparatus
Provided in the present disclosure are a display panel and a manufacturing method therefor, and a display apparatus. A pixel defining layer includes a plurality of first barrier walls and a plurality of second barrier walls, which are arranged in an intersecting manner, where a height of the first barrier wall is smaller than a height of the second barrier wall, and orthographic projections of via holes for connecting light emitting devices on a base substrate are located in orthographic projections of the second barrier walls on the base substrate. Due to a great thickness of the second barrier walls, an effect of covering via holes can be better by providing the via holes below the second barrier walls.
1 . A display panel, comprising:
a base substrate;
a driver circuit layer on the base substrate;
a planarization layer at one side of the driver circuit layer facing away from the base substrate, wherein the planarization layer comprises a plurality of via holes;
a pixel defining layer on the planarization layer, wherein the pixel defining layer comprises: a plurality of first barrier walls and a plurality of second barrier walls, the plurality of first barrier walls extend in a first direction and are arranged in a second direction, and the plurality of second barrier walls extend in the second direction and are arranged in the first direction; the first direction intersects with the second direction; and the plurality of first barrier walls and the plurality of second barrier walls form a plurality of openings; wherein each of the plurality of openings is enclosed by two adjacent first barrier walls of the plurality of first barrier walls in the second direction and two adjacent second barrier walls of the plurality of second barrier walls in the first direction; and
a light emitting device layer at one side of the pixel defining layer facing away from the planarization layer, wherein the light emitting device layer comprises a plurality of light emitting devices, and each of the plurality of light emitting devices is correspondingly arranged in one of the plurality of openings; and the plurality of via holes and the plurality of light emitting devices are in a one-to-one correspondence, and the plurality of light emitting devices are electrically connected to the driver circuit layer through the plurality of via holes, wherein
heights of the plurality of first barrier walls are smaller than heights of the plurality of second barrier walls, and orthographic projections of the plurality of via holes on the base substrate are located in orthographic projections of the plurality of second barrier walls on the base substrate;
wherein the orthographic projections of the plurality of via holes on the base substrate are located in orthographic projections of intersection areas between the plurality of first barrier walls and the plurality of second barrier walls on the base substrate; and
wherein light emitting devices of the plurality of light emitting devices, which are correspondingly arranged in openings of the plurality of openings between the two adjacent second barrier walls of the plurality of second barrier walls in the first direction, have a same color.
2 . The display panel according to claim 1 , wherein widths of the plurality of first barrier walls in the second direction are greater than widths of the plurality of second barrier walls in the first direction.
3 . The display panel according to claim 1 , further comprising:
a medium layer at one side of the pixel defining layer facing away from the planarization layer; and
an encapsulation layer at one sides of the pixel defining layer and the light emitting device layer facing away from the planarization layer, wherein
a refractive index of the encapsulation layer is greater than a refractive index of the medium layer.
4 . The display panel according to claim 3 , wherein the medium layer comprises a plurality of medium units, and sizes of the orthographic projections of the plurality of via holes on the base substrate are greater than sizes of orthographic projections of the plurality of medium units on the base substrate.
5 . The display panel according to claim 4 , wherein the plurality of medium units are arranged along peripheral edges of the plurality of openings separately.
6 . The display panel according to claim 5 , wherein adjacent medium units in the plurality of medium units are separated by a set distance, and the set distance is smaller than a width of any one of the plurality of medium units.
7 . The display panel according to claim 4 , wherein medium units in the plurality of medium units at one side of the plurality of first barrier walls facing away from the planarization layer are first medium units, and medium units in the plurality of medium units at one side of the plurality of second barrier walls facing away from the planarization layer are second medium units; and
widths of the first medium units are equal to widths of the second medium units.
8 . The display panel according to claim 7 , wherein a distance between two rows of the first medium units located on a same first barrier wall and arranged at edges of two adjacent openings is greater than the widths of the first medium units; and
a distance between two rows of the second medium units located on a same second barrier wall and arranged at edges of two adjacent openings is smaller than the widths of the second medium units.
9 . The display panel according to claim 7 , wherein a distance between adjacent first medium units in the first medium units at an edge of a same opening is greater than a distance between adjacent second medium units in the second medium units.
10 . The display panel according to claim 7 , wherein heights of the first medium units are the same as heights of the second medium units.
11 . The display panel according to claim 7 , wherein heights of the first medium units are greater than heights of the second medium units; and a surface of one side of the first medium units facing away from the plurality of first barrier walls is flush with a surface of one side of the second medium units facing away from the plurality of second barrier walls.
12 . The display panel according to claim 4 , wherein one of the plurality of medium units is in a shape of a cylinder.
13 . The display panel according to claim 4 , wherein widths of the plurality of medium units decrease and then increase in a direction away from the pixel defining layer.
14 . A display apparatus, comprising a display panel, wherein the display panel comprises:
a base substrate;
a driver circuit layer on the base substrate;
a planarization layer at one side of the driver circuit layer facing away from the base substrate, wherein the planarization layer comprises a plurality of via holes;
a pixel defining layer on the planarization layer, wherein the pixel defining layer comprises: a plurality of first barrier walls and a plurality of second barrier walls, the plurality of first barrier walls extend in a first direction and are arranged in a second direction, and the plurality of second barrier walls extend in the second direction and are arranged in the first direction; the first direction intersects with the second direction; and the plurality of first barrier walls and the plurality of second barrier walls form a plurality of openings; wherein each of the plurality of openings is enclosed by two adjacent first barrier walls of the plurality of first barrier walls in the second direction and two adjacent second barrier walls of the plurality of second barrier walls in the first direction; and
a light emitting device layer at one side of the pixel defining layer facing away from the planarization layer, wherein the light emitting device layer comprises a plurality of light emitting devices, and each of the plurality of light emitting devices is correspondingly arranged in one of the plurality of openings; and the plurality of via holes and the plurality of light emitting devices are in a one-to-one correspondence, and the plurality of light emitting devices are electrically connected to the driver circuit layer through the plurality of via holes, wherein
heights of the plurality of first barrier walls are smaller than heights of the plurality of second barrier walls, and orthographic projections of the plurality of via holes on the base substrate are located in orthographic projections of the plurality of second barrier walls on the base substrate;
wherein the orthographic projections of the plurality of via holes on the base substrate are located in orthographic projections of intersection areas between the plurality of first barrier walls and the plurality of second barrier walls on the base substrate; and
wherein light emitting devices of the plurality of light emitting devices, which are correspondingly arranged in openings of the plurality of openings between the two adjacent second barrier walls of the plurality of second barrier walls in the first direction, have a same color.
15 . The display apparatus according to claim 14 , wherein widths of the plurality of first barrier walls in the second direction are greater than widths of the plurality of second barrier walls in the first direction.
16 . The display apparatus according to claim 14 , wherein the display panel further comprises:
a medium layer at one side of the pixel defining layer facing away from the planarization layer; and
an encapsulation layer at one sides of the pixel defining layer and the light emitting device layer facing away from the planarization layer, wherein
a refractive index of the encapsulation layer is greater than a refractive index of the medium layer.
17 . The display apparatus according to claim 16 , wherein the medium layer comprises a plurality of medium units, and sizes of the orthographic projections of the plurality of via holes on the base substrate are greater than sizes of orthographic projections of the plurality of medium units on the base substrate.