Display panel and display device

1 . A display panel, comprising:

a first display area corresponding to an area for arranging optical sensing elements under the display panel through camera under panel (CUP) technology, the first display area having a plurality of light-transmitting areas, wherein the display panel further comprises:

a display function layer including light-emitting elements;

auxiliary structures on a side of the display function layer facing a display surface of the display panel; and

the auxiliary structures configured around pixels in the first display area, wherein in the first display area:

pixel circuits for pixels included in an inner part of the first display area are arranged in an area outside the first display area along a direction perpendicular to the display surface, and no pixel circuit for pixels included in the first display area overlaps with an optical sensing element in the first display area, and

the plurality of light-transmitting areas are configured adjacent to the pixels to transmit external light through the first display area and further into a backside of the display panel where the optical sensing elements are disposed.

2 . The display panel according to claim 1 , wherein an auxiliary structure includes a protrusion or a groove.

3 . The display panel according to claim 2 , further comprising:

a touch function layer on a side of the display function layer facing the display surface of the display panel; wherein

the auxiliary structure is multiplexed as a film layer in the touch function layer.

4 . The display panel according to claim 3 , further comprising a second display area, wherein:

a light transmittance of the second display area is smaller than a light transmittance of the first display area;

the touch function layer includes conductive layers at least in the first display area; and

the auxiliary structures include first auxiliary structures on a same layer and being made of a same material as a conductive layer.

5 . The display panel according to claim 4 , wherein the conductive layer includes a touch electrode layer and a bridge layer, and the first auxiliary structures are on a same layer and are made of a same material as the touch electrode layer and/or the bridge layer.

6 . The display panel according to claim 1 , further comprising a second display area, wherein:

a light transmittance of the second display area is smaller than a light transmittance of the first display area;

the display panel further includes a touch function layer on the side of the display function layer facing the display surface of the display panel; and

the touch function layer includes a metal mesh in the second display area, mesh openings of the metal mesh are arranged corresponding to the pixels.

7 . The display panel according to claim 6 , wherein the auxiliary structures include first auxiliary structures, and the first auxiliary structures are on a same layer and are made of a same material as the metal mesh.

8 . The display panel according to claim 7 , wherein:

a line width of a mesh line of the metal mesh is D1;

a width of an auxiliary structure is D2; and

D2≤D1.

9 . The display panel according to claim 6 , wherein number of mesh lines between two adjacent pixels in the second display area is smaller than number of the auxiliary structures between two adjacent pixels in the first display area.

10 . The display panel according to claim 9 , wherein:

a distance between a mesh line of the metal mesh and a pixel adjacent thereto is L1;

a distance between an auxiliary structure and a pixel adjacent thereto is L2; and

L1>L2.

11 . The display panel according to claim 1 , wherein a size of an auxiliary structure is smaller than a size of a pixel adjacent to the auxiliary structure.

12 . The display panel according to claim 1 , wherein an auxiliary structure extends along at least part of edges of a pixel adjacent to the auxiliary structure.

13 . The display panel according to claim 1 , wherein in the first display area, the auxiliary structures configured around at least two pixels are arranged differently.

14 . The display panel according to claim 6 , wherein the touch function layer includes at least one insulating layer, and an auxiliary structure is multiplexed as an insulating layer.

15 . The display panel according to claim 14 , wherein the auxiliary structure includes a first auxiliary structure and a second auxiliary structure, and the first auxiliary structure and the second auxiliary structure are on different layers.

16 . The display panel according to claim 15 , wherein the first auxiliary structure overlaps the second auxiliary structure.

17 . The display panel according to claim 1 , wherein an auxiliary structure between two adjacent pixels is symmetrically arranged with respect to a mid-perpendicular line of a connecting line between the two adjacent pixels.

18 . The display panel according to claim 1 , wherein

a connecting line with a smallest distance between two adjacent pixels overlaps an auxiliary structure, and/or

the auxiliary structures are configured surrounding the pixels in a non-closed manner.

19 . The display panel according to claim 1 , wherein

a second pixel outside the first display area has a corresponding second pixel circuit configured overlapping with the second pixel along the direction perpendicular to the display surface, and

each of the first and second pixel circuits includes a thin film transistor.

20 . A display device, comprising a display panel comprising a first display area corresponding to an area for arranging all optical sensing elements under the display panel through camera under panel (CUP) technology, the first display area having a plurality of light-transmitting areas, wherein the display panel further comprises:

a display function layer including light-emitting elements;

auxiliary structures on a side of the display function layer facing a display surface of the display panel; and

the auxiliary structures configured around pixels in the first display area, wherein in the first display area:

pixel circuits for pixels included in an inner part of the first display area are arranged in an area outside the first display area along a direction perpendicular to the display surface, and no pixel circuit for pixels included in the first display area overlaps with an optical sensing element in the first display area, and

the plurality of light-transmitting areas are configured adjacent to the pixels to transmit external light through the first display area and further into a backside of the display panel where the optical sensing elements are disposed.