# US 12,217,533 B2 · Display panel and display device

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 12,217,533 B2
- Document ID: US12217533B2
- Status: Granted
- Kind: B2
- Application number: 18/050,581
- Filed: 2022-10-28
- Published: 2024-02-01
- Granted: 2025-02-04
- Earliest claimed: 2022-07-29
- Assignees: Hubei Yangtze Industrial Innovation Center Of Advanced Display Co., Ltd.
- Applicants: Hubei Yangtze Industrial Innovation Center Of Advanced Display Co., Ltd.
- Inventors: Shihao Tang; Yang Zeng
- Web page: https://patentgrep.com/patent/US12217533B2

## CPC

- G06V 40/1318: {using electro-optical elements or layers, e.g. electroluminescent sensing}
- H10H 20/8514: {characterised by their shape, e.g. plate or foil}
- H10K 59/60: OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
- H10K 59/8792: {comprising light absorbing layers, e.g. black layers}
- G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES

## Abstract

Provided are a display panel and a display device. The display panel has an optical identification region and includes a first layer and a second layer. The first layer is located at a side of the second layer close to a light-exiting side of the display panel. The first layer has at least one first light-shielding region and includes at least one first light-transmitting hole. The second layer includes at least one second light-transmitting hole corresponding to the at least one first light-transmitting hole. 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.

## Claims

### Claim 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.

### Claim 2 (depends on 1)

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.

### Claim 3 (depends on 1)

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.

### Claim 4 (depends on 1)

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.

### Claim 5 (depends on 4)

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 ΔdL between the first end and the second end satisfies: ΔdL≥tan θ1×h1, where θ1 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.

### Claim 6 (depends on 4)

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 1st 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 nth 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 ΔdLn;
wherein along a direction from a center of the optical identification region to an edge of the optical identification region, the 1st hole group through the nth hole group are arranged in sequence; and
wherein ΔdLa<ΔdLb, where both a and b are positive integers selected from 1 to n, and a<b; or, wherein ΔdLa=ΔdLb, where both a and b are positive integers selected from 1 to n, and a<b.

### Claim 7 (depends on 6)

The display panel according to claim 6, wherein, when ΔdLa=ΔdLb, b=n.

### Claim 8 (depends on 6)

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 Δdn≥tan θ1×h1, where θ1 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 h1 denotes a distance between the first light-transmitting hole and the second light-transmitting hole along a second direction perpendicular to the first direction.

### Claim 9 (depends on 1)

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.

### Claim 10 (depends on 9)

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 ΔdW between the first end and the second end satisfies: 0<ΔdW≤tan θ1×h1, where θ1 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 h1 denotes a distance between the first light-transmitting hole and the second light-transmitting hole along a second direction perpendicular to the first direction.

### Claim 11 (depends on 9)

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 1st 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 corresponding to the one of the at least one first light-transmitting hole;
wherein in the nth 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 ΔdWn;
wherein along a direction from a center of the optical identification region to an edge of the optical identification region, the 1st hole group through the nth hole group are arranged in sequence; and
wherein ΔdWa<ΔdWb, where both a and b are positive integers selected from 1 to n, and a<b; or wherein ΔdWa=ΔdWb, where both a and b are positive integers selected from 1 to n, and a<b.

### Claim 12 (depends on 11)

The display panel according to claim 11, wherein when ΔdWa=ΔdWb, b=n.

### Claim 13 (depends on 11)

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<Δdn≤tan θ1×h1, where θ1 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.

### Claim 14 (depends on 1)

The display panel according to claim 1, wherein each of a 1st 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 corresponding to the one of the at least one first light-transmitting hole, and the 1st hole group through the nth 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 pth hole group of the 1st hole group through the nth hole group is smaller than an area of another one of the at least one second light-transmitting hole in a qth hole group of the 1st hole group through the nth hole group, where both p and q are positive integers selected from 1 to n, and p<q.

### Claim 15 (depends on 1)

The display panel according to claim 1, wherein each of a 1st hole group to 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 corresponding to the one of the at least one first light-transmitting hole, and the 1st hole group to the nth 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 ith hole group of the 1st hole group to the nth hole group is equal to an area of another one of the second light-transmitting hole in a jth hole group of the 1st hole group to the nth hole group, where both i and j are positive integers selected from 1 to n, and i<j.

### Claim 16 (depends on 1)

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.

### Claim 17 (depends on 1)

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.

### Claim 18 (depends on 1)

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

### Claim 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.

### Claim 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.