Display panel and display device
View Patent ↗The present disclosure provides a display panel, including a substrate, a pixel driving circuit, a planarization layer, and a display area. The planarization layer is arranged on a side of the pixel driving circuit away from the substrate. The planarization layer includes a first area and a second area. The first area and the second area are in a direction perpendicular to the substrate. A vertical distance from a surface of the first area away from the substrate to the substrate is greater than a vertical distance from a surface of the second area away from the substrate to the substrate. The display area includes a second light-shielding layer arranged between the substrate and the planarization layer. In the direction perpendicular to the substrate, a projection of the second light-shielding layer partially overlaps with a projection of the first area.
1 . A display panel, comprising:
a substrate;
a pixel driving circuit;
a planarization layer arranged on a side of the pixel driving circuit away from the substrate, including:
a plurality of first regions; and
a plurality of second regions, the first regions and the second regions being in a direction perpendicular to the substrate, a vertical distance from top surfaces of the first regions of the planarization layer away from the substrate to the substrate being greater than a vertical distance from top surfaces of the second regions of the planarization layer away from the substrate to the substrate; and
a display area including a second light-shielding layer arranged between the substrate and the planarization layer,
wherein:
the display panel includes a first display area, and the first display area includes a light transmissive area and a light non-transmissive area;
in the light transmissive area, there are at least one first region and at least one second region, in a direction perpendicular to the substrate, a projection of the second light-shielding layer at least partially overlaps with a projection of the at least one first region but does not overlap with a projection of the at least one second region, or a thickness of a portion of the second light-shielding layer overlapping with the at least one first region is larger than a thickness of a portion of the second light-shielding layer overlapping with the at least one second region; and
the display panel further includes a first light-shielding layer, and in the light non-transmissive area, there are at least one first region and at least one second region, in the direction perpendicular to the substrate, a projection of the first light-shielding layer overlaps with both the projection of the at least one first region and the projection of the at least one second region; or in the light non-transmissive region, in the direction perpendicular to the substrate, the projection of the second light-shielding layer overlaps with both the projection of the at least one first region and the projection of the at least one second region.
2 . The display panel according to claim 1 , wherein:
the second light-shielding layer is provided in a same layer as any metal layer between the substrate and the planarization layer.
3 . The display panel according to claim 1 , wherein
the projection of the first light-shielding layer partially overlapping with a projection of the pixel driving circuit.
4 . The display panel according to claim 3 , wherein:
the first light-shielding layer and the second-shielding layer are arranged on a same layer.
5 . The display panel according to claim 3 , wherein:
the first light-shielding layer includes a first sub-light-shielding layer, a material of the first sub-light-shielding layer including a black light-shielding material.
6 . The display panel according to claim 5 , wherein:
the first light-shielding layer further includes a second sub-light-shielding layer arranged on a side of the first sub-light-shielding layer away from the substrate, a material of the second sub-light-shielding layer including a metal material, a projection of the second sub-shielding-layer overlapping with a projection of the first sub-shielding layer in the direction perpendicular to the substrate.
7 . The display panel according to claim 6 , wherein:
a part of the first sub-light-shielding layer does not overlap with the second sub-light-shielding layer in the direction perpendicular to the substrate.
8 . The display panel according to claim 6 , wherein:
the second sub-light-shielding layer is connected to a power supply voltage or a reference voltage of the display panel.
9 . The display panel according to claim 5 , wherein:
the first light-shielding layer further includes a second sub-light-shielding layer; and
the pixel driving circuit includes a first capacitor including:
a first electrode plate connected to a power supply voltage; and
a second electrode plate, the second sub-light-shielding layer and the second electrode plate forming a second capacitor.
10 . The display panel according to claim 9 , wherein:
the second sub-light-shielding layer is connected to the first electrode plate through a first via-hole, a connection part, and a second via-hole; and
the connection part connects the first via-hole and the second via-hole; and
the connection part is arranged on a same layer with any one metal layer arranged between the second sub-light-shielding layer and the first electrode plate.
11 . A display panel, comprising:
a substrate;
a pixel driving circuit;
a light-emitting structure layer; and
a display area including:
a first display area including a first light-shielding layer; and
a second display area including a third light-shielding layer, in a direction perpendicular to the substrate:
a projection of the first light-shielding layer at least partially overlapping with a projection of the pixel driving circuit; and
a projection of the third light-shielding layer at least partially overlapping with the projection of the pixel driving circuit and the projection of the first light-shielding layer,
wherein:
the first display area includes a light transmissive area and a light non-transmissive area and the second display area does not include a light transmissive area;
the light non-transmissive area of the first display area and the third display area both include the light-emitting structure layer;
the light non-transmissive area of the first display area includes the first light-shielding layer, and in the direction perpendicular to the substrate, the projection of the first light-shielding layer overlaps with a projection of the light-emitting structure layer in the first display area;
the light transmissive area of the first display includes a second light-shielding layer, and in the direction perpendicular to the substrate, a projection of the second light-shielding layer does not overlap with the projection of the light-emitting structure layer in the first display area;
the third display area is located in an area adjacent to the first display area and the second display area, and in the direction perpendicular to the substrate, a projection of the third display area overlaps with a projection of the light-emitting structure layer in the second display area; and
in the direction perpendicular to the substrate, a thickness of the first light-shielding layer is greater than a thickness of the third light-shielding layer, and/or a projection area of the first light-shielding layer is greater than a projection area of the third light-shielding layer.
12 . The display panel according to claim 11 , wherein in a direction moving away from the first display area to the second display area, a projection area of the another light-shielding layer in the direction perpendicular to the substrate decreases gradually; and/or
in the direction moving away from the first display area to the second display area, a thickness of the another light-shielding layer in the direction perpendicular to the substrate decreases gradually.
13 . The display panel according to claim 11 , wherein:
the first light-shielding layer includes a first sub-light-shielding layer, a material of the first sub-light-shielding layer being a black light-shielding material.
14 . The display panel according to claim 13 , wherein:
the first light-shielding layer further includes a second sub-light-shielding layer arranged on a side of the first sub-light-shielding layer away from the substrate;
the second sub-light-shielding layer includes a metal material; and
in the direction perpendicular to the substrate, a projection of the second sub-light-shielding layer partially overlaps with a projection of the first sub-light-shielding layer.
15 . The display panel according to claim 14 , wherein:
in the direction perpendicular to the substrate, a part of the first sub-light-shielding layer does not overlap with the second sub-light-shielding layer.
16 . The display panel according to claim 14 , wherein:
the second sub-light-shielding layer is connected to a power supply voltage or a reference voltage of the display panel.
17 . The display panel according to claim 13 , wherein:
the first light-shielding layer further includes a second sub-light-shielding layer; and
the pixel driving circuit includes a first capacitor including:
a first electrode plate connected to the power supply voltage; and
a second electrode plate, the second sub-light-shielding layer and the second electrode plate forming a second capacitor.
18 . The display panel according to claim 17 , wherein:
the second sub-light-shielding layer is connected to the first electrode plate through a first via-hole, a connection part, and a second via-hole;
the connection part connects the first via-hole and the second via-hole; and
the connection part is arranged on a same layer with any one metal layer between the second sub-light-shielding layer and the first electrode plate.
19 . A display device, comprising a display panel including:
a substrate;
a pixel driving circuit;
a planarization layer arranged on a side of the pixel driving circuit away from the substrate, including:
a plurality of first regions; and
a plurality of second regions, the first regions and the second regions being in a direction perpendicular to the substrate, a vertical distance from top surfaces of the first regions of the planarization layer away from the substrate to the substrate being greater than a vertical distance from top surfaces of the second regions of the planarization layer away from the substrate to the substrate; and
a display area including a second light-shielding layer arranged between the substrate and the planarization layer,
wherein:
the display panel includes a first display area, and the first display area includes a light transmissive area and a light non-transmissive area;
in the light transmissive area, there are at least one first region and at least one second region, in a direction perpendicular to the substrate, a projection of the second light-shielding layer at least partially overlaps with a projection of the at least one first region but does not overlap with a projection of the at least one second region, or a thickness of a portion of the second light-shielding layer overlapping with the at least one first region is larger than a thickness of a portion of the second light-shielding layer overlapping with the at least one second region; and
the display panel further includes a first light-shielding layer, and in the light non-transmissive area, there are at least one first region and at least one second region, in the direction perpendicular to the substrate, a projection of the first light-shielding layer overlaps with both the projection of the at least one first region and the projection of the at least one second region; or in the light non-transmissive region, in the direction perpendicular to the substrate, the projection of the second light-shielding layer overlaps with both the projection of the at least one first region and the projection of the at least one second region.