Granted Patent B2

US 12,217,533 · App. 18/050,581 · Granted Feb 4, 2025

Inventors: Shihao Tang (Shanghai, CN); Yang Zeng (Shanghai, CN)

Assignee: Hubei Yangtze Industrial Innovation Center Of Advanced Display Co., Ltd.

G06V40/1318H01L33/505

Abstract

Claims (60)

1. A display panel, having an optical identification region and comprising:

a first layer;

a second layer, the first layer being located at a side of the second layer close to a light-exiting side of the display panel; and

a display layer below the first layer and above the second layer, wherein the display layer comprises light-emitting elements,

wherein the first layer has at least one first light-shielding region and comprises at least one first light-transmitting hole, and the second layer comprises at least one second light-transmitting hole corresponding to the at least one first light-transmitting hole; and

wherein one of the at least one first light-shielding region and one of the at least one second light-transmitting hole at least partially overlap with each other along a direction perpendicular to a plane of the display panel, so that large-angle reflected light that passes through one first light-transmitting hole corresponding to the one first light-shielding region successfully propagates towards an optical sensor after passing through the one second light-transmitting hole in the second layer.

2. The display panel according to claim 1 , wherein the at least one first light-shielding region is adjacent to the at least one first light-transmitting hole; and one first light-shielding region of the at least one first light-shielding region is located at a side, close to a center of the optical identification region, of one of the at least one first light-transmitting hole that corresponds to one of the at least one second light-transmitting hole that corresponds to the one first light-shielding region.

3. The display panel according to claim 1 , further comprising:

at least one lens located at a side of the second layer away from the first layer and located in the optical identification region.

4. The display panel according to claim 1 , wherein one of the at least one first light-transmitting hole and one of the at least one second light-transmitting hole at least partially overlap with each other along the direction perpendicular to the plane of the display panel.

5. The display panel according to claim 4 , further comprising:

a collection point located at a touch surface; and

a first substrate located at a side of the second layer away from the first layer,

wherein one first light-transmitting hole of the at least one first light-transmitting hole has a first end away from an edge of the optical identification region, and one second light-transmitting hole of the at least one second light-transmitting hole has a second end away from the edge of the optical identification region, and

wherein along a first direction parallel to the plane of the display panel, a distance Δd L between the first end and the second end satisfies: Δd L ≥tan θ 1 ×h 1 , where θ 1 denotes an incident angle at which first light is irradiated on a surface of the first substrate close to the second layer, the first light being light that is incident to the first light-transmitting hole and the second light-transmitting hole after being reflected by the collection point; and hi denotes a distance between the first light-transmitting hole and the second light-transmitting hole along a second direction perpendicular to the first direction.

6. The display panel according to claim 4 , further comprising:

a collection point located at a touch surface,

wherein one first light-transmitting hole of the at least one first light-transmitting hole comprises a first end away from an edge of the optical identification region, and one second light-transmitting hole of the at least one second light-transmitting hole comprises a second end away from the edge of the optical identification region; and each of a 1 st hole group through an nth hole group is formed by one of the at least one first light-transmitting hole and one of the at least one second light-transmitting hole that corresponds to the one of the at least one first light-transmitting hole;

wherein in the n th hole group, along a first direction parallel to the plane of the display panel, a distance between the first end and the second end is Δd Ln ;

wherein along a direction from a center of the optical identification region to an edge of the optical identification region, the 1 st hole group through the n th hole group are arranged in sequence; and

wherein Δd La <Δd Lb , where both a and b are positive integers selected from 1 to n, and a<b; or, wherein Δd La =Δd Lb , where both a and b are positive integers selected from 1 to n, and a<b.

7. The display panel according to claim 6 , wherein, when Δd La =Δd Lb , b=n.

8. The display panel according to claim 6 , further comprising:

a first substrate located at a side of the second layer away from the first layer, wherein Δd n ≥tan θ 1 ×h 1 , where θ 1 denotes an incident angle at which light is irradiated on a surface of the first substrate close to the second layer after the light is reflected at the collection point, and h 1 denotes a distance between the first light-transmitting hole and the second light-transmitting hole along a second direction perpendicular to the first direction.

9. The display panel according to claim 1 , wherein the at least one first light-transmitting hole and the at least one second light-transmitting hole do not overlap with each other along the direction perpendicular to the plane of the display panel.

10. The display panel according to claim 9 , further comprising:

a collection point located at a touch surface; and

a first substrate located at a side of the second layer away from the first layer,

wherein one first light-transmitting hole of the at least one first light-transmitting hole comprises a first end away from an edge of the optical identification region, and one second light-transmitting hole of the at least one second light-transmitting hole comprises a second end close to the edge of the optical identification region, and

wherein along a first direction parallel to the plane of the display panel, a distance Δd W between the first end and the second end satisfies: 0<Δd W ≤tan θ 1 ×h 1 , where θ 1 denotes an incident angle at which first light is irradiated on a surface of the first substrate close to the second layer, the first light being light that is incident to the first light-transmitting hole and the second light-transmitting hole after being reflected by the collection point; and h 1 denotes a distance between the first light-transmitting hole and the second light-transmitting hole along a second direction perpendicular to the first direction.

11. The display panel according to claim 9 , further comprising:

a collection point located at a touch surface,

wherein one first light-transmitting hole of the at least one first light-transmitting hole comprises a first end away from an edge of the optical identification region, and one second light-transmitting hole of the at least one second light-transmitting hole comprises a second end close to the edge of the optical identification region; and each of a 1 st hole group through an n th hole group is formed by one of the at least one first light-transmitting hole and one of the at least one second light-transmitting hole corresponding to the one of the at least one first light-transmitting hole;

wherein in the n th hole group, along a first direction parallel to the plane of the display panel, a distance between the first end and the second end is Δd Wn ;

wherein along a direction from a center of the optical identification region to an edge of the optical identification region, the 1 st hole group through the n th hole group are arranged in sequence; and

wherein Δd Wa <Δd Wb , where both a and b are positive integers selected from 1 to n, and a<b; or wherein Δd Wa =Δd Wb , where both a and b are positive integers selected from 1 to n, and a<b.

12. The display panel according to claim 11 , wherein when Δd Wa =Δd Wb , b=n.

13. The display panel according to claim 11 , further comprising:

a first substrate located at a side of the second layer away from the first layer, wherein 0<Δd n ≤tan θ 1 ×h 1 , where θ 1 denotes an incident angle at which light is irradiated on a surface of the first substrate facing towards the second layer after the light is reflected at the collection point; and hi denotes a distance between the first light-transmitting hole and the second light-transmitting hole along a second direction perpendicular to the first direction.

14. The display panel according to claim 1 , wherein each of a 1 st hole group through an n th hole group is formed by one of the at least one first light-transmitting hole and one of the at least one second light-transmitting hole corresponding to the one of the at least one first light-transmitting hole, and the 1 st hole group through the n th hole group are arranged in sequence along a direction from a center of the optical identification region to an edge of the optical identification region; and

wherein an area of one of the at least one second light-transmitting hole in a p th hole group of the 1 st hole group through the n th hole group is smaller than an area of another one of the at least one second light-transmitting hole in a q th hole group of the 1 st hole group through the n th hole group, where both p and q are positive integers selected from 1 to n, and p<q.

15. The display panel according to claim 1 , wherein each of a 1 st hole group to an n th hole group is formed by one of the at least one first light-transmitting hole and one of the at least one second light-transmitting hole corresponding to the one of the at least one first light-transmitting hole, and the 1 st hole group to the n th hole group are arranged in sequence along a direction from a center of the optical identification region to an edge of the optical identification region; and

wherein an area of one of the at least one second light-transmitting hole in an i th hole group of the 1 st hole group to the n th hole group is equal to an area of another one of the second light-transmitting hole in a j th hole group of the 1 st hole group to the n th hole group, where both i and j are positive integers selected from 1 to n, and i<j.

16. The display panel according to claim 1 , wherein, along the direction perpendicular to the plane of the display panel, an orthographic projection of a center of one of the at least one first light-transmitting hole on the plane of the display panel coincides with an orthographic projection of a center of one of the at least one second light-transmitting hole on the plane of the display panel.

17. The display panel according to claim 1 , wherein along the direction perpendicular to the plane of the display panel, an orthographic projection of an edge of one of the at least one first light-transmitting hole on the plane of the display panel coincides with an orthographic projection of an edge of one of the at least one second light-transmitting hole on the plane of the display panel.

18. A display device, comprising a display panel according to the claim 1 .

19. A display panel, having an optical identification region and comprising:

a first layer;

a second layer, the first layer being located at a side of the second layer close to a light-exiting side of the display panel,

wherein the first layer has at least one first light-shielding region and comprises at least one first light-transmitting hole, and the second layer comprises at least one second light-transmitting hole corresponding to the at least one first light-transmitting hole;

wherein one of the at least one first light-shielding region and one of the at least one second light-transmitting hole at least partially overlap with each other along a direction perpendicular to a plane of the display panel;

wherein the display panel further comprises at least one of a color filter layer or an array layer; and

wherein the color filter layer comprises the first layer, and the array layer comprises the second layer.

20. A display panel, having an optical identification region and comprising:

a first layer;

a second layer, the first layer being located at a side of the second layer close to a light-exiting side of the display panel; and

a display layer below the first layer and above the second layer, wherein the display layer comprises light-emitting elements;

wherein the first layer has at least one first light-shielding region and comprises at least one first light-transmitting hole, and one of the at least one first light-shielding region surrounds one of the at least one first light-transmitting hole;

wherein the second layer comprises at least one second light-transmitting hole corresponding to the at least one first light-transmitting hole; and

wherein one of the at least one first light-shielding region surrounding one first light-transmitting hole and one of the at least one second light-transmitting hole corresponding to the same first light-transmitting hole at least partially overlap with each other along a direction perpendicular to a plane of the display panel, so that large-angle reflected light that passes through the one first light-transmitting hole successfully propagates towards an optical sensor after passing through the one second light-transmitting hole in the second layer.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (13)