# US 12,193,264 B2 · Display panel, manufacturing method thereof and display apparatus

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

- Number: US 12,193,264 B2
- Document ID: US12193264B2
- Status: Granted
- Kind: B2
- Application number: 18/359,489
- Filed: 2023-07-26
- Published: 2023-11-16
- Granted: 2025-01-07
- Earliest claimed: 2020-05-06
- Assignees: Hubei Yangtze Industrial Innovation Center Of Advanced Display Co., Ltd.
- Applicants: Hubei Yangtze Industrial Innovation Center Of Advanced Display Co., Ltd.
- Inventors: Yu Cai; Junqiang Wang
- Web page: https://patentgrep.com/patent/US12193264B2

## CPC

- H10W 90/00: Package configurations
- H10K 59/352: {the areas of the RGB subpixels being different}
- H10K 59/873: {Encapsulations}
- H10K 59/879: {comprising refractive means, e.g. lenses}
- H10H 20/855: Optical field-shaping means, e.g. lenses
- H10K 59/40: OLEDs integrated with touch screens
- H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS

## Abstract

Provided is a display panel, including: a base substrate, a light emitting device layer provided on the base substrate and including light emitting devices, and a light adjustment structure layer provided at a side of the light emitting device layer facing away from the base substrate and including light adjustment units and a dielectric layer covering the light adjustment units. Each light adjustment unit has a smaller refractive index than the dielectric layer and includes a light adjustment sub-section and a through hole penetrating the light adjustment unit in a direction perpendicular to the base substrate. The through hole overlaps one light emitting device, and the light adjustment sub-section surrounds the through hole. For one light adjustment unit, a thickness of the light adjustment sub-section gradually increases in a direction from the through hole to the light adjustment sub-section.

## Claims

### Claim 1

A display panel, comprising:
a base substrate;
a light emitting device layer provided on the base substrate, the light emitting device layer comprising a light emitting device; and
a light adjustment structure layer provided at a side of the light emitting device layer facing away from the base substrate, wherein the light adjustment structure layer comprises a light adjustment unit, and the light adjustment unit comprises a through hole overlapping the light emitting device and a light adjustment sub-section surrounding the through hole,
wherein the light emitting device comprises a first light emitting device and a second light emitting device, a color of light emitted from the first light emitting device is different from a color of light emitted from the second light emitting device, and a light emitting area of the first light emitting device is greater than a light emitting area of the second light emitting device,
the light adjustment unit comprises a first light adjustment unit and a second light adjustment unit, the through hole of the first light adjustment unit overlaps the first light emitting device, and the through hole of the second light adjustment unit overlaps the second light emitting device,
in the first light adjustment unit, along a direction from the through hole to the light adjustment sub-section, the light adjustment sub-section has a thickness change rate γ1,
in the second light adjustment unit, along a direction from the through hole to the light adjustment sub-section, the light adjustment sub-section has a thickness change rate γ2, and
the thickness change rate γ2 is greater than the thickness change rate γ1; and
wherein the display panel further comprises: a dielectric layer covering the light adjustment unit, and an interface between the dielectric layer and the light adjustment sub-section is a convex surface protruding from the light emitting device layer along a direction away from the base substrate, or
wherein the light adjustment unit comprises a plurality of light adjustment units, a light adjustment unit of the plurality of light adjustment units is in contact with its adjacent light adjustment unit.

### Claim 2 (depends on 1)

The display panel according to claim 1, wherein a vertical direction is perpendicular to the base substrate, an angle between the vertical direction and light that is emitted from an edge of the first light emitting device and incident on the light adjustment sub-section of the first light adjustment unit is greater than a first angle β2, an angle between the vertical direction and light that is emitted from an edge of the second light emitting device and incident on the light adjustment sub-section of the second light adjustment unit is greater than a second angle β1, and the first angle β2 is greater than the second angle β1.

### Claim 3 (depends on 1)

The display panel according to claim 1, wherein the first light emitting device is a blue light emitting device, and the second light emitting device is a red light emitting device, or
wherein the first light emitting device is the blue light emitting device, and the second light emitting device is a green light emitting device, or
wherein the first light emitting device is the green light emitting device, and the second light emitting device is the red light emitting device.

### Claim 4 (depends on 1)

The display panel according to claim 1, wherein a refractive index of the light adjustment unit is less than that of the dielectric layer.

### Claim 5 (depends on 1)

The display panel according to claim 1, wherein an interface between the dielectric layer and the light adjustment sub-section is an arc-shaped surface.

### Claim 6 (depends on 1)

The display panel according to claim 1, wherein the light adjustment unit further comprises a first surface protruding along a direction away from the base substrate.

### Claim 7 (depends on 1)

The display panel according to claim 1, wherein an orthographic projection of the light adjustment unit has a ring shape.

### Claim 8 (depends on 1)

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

### Claim 9

A display panel, comprising:
a base substrate;
a light emitting device layer provided on the base substrate, the light emitting device layer comprising a light emitting device; and
a light adjustment structure layer provided at a side of the light emitting device layer facing away from the base substrate, wherein the light adjustment structure layer comprises a light adjustment unit, and the light adjustment unit comprises a through hole overlapping the light emitting device and a light adjustment sub-section surrounding the through hole,
wherein the light emitting device comprises a first light emitting device and a second light emitting device, a color of light emitted from the first light emitting device is different from a color of light emitted from the second light emitting device, and a light emitting area of the first light emitting device is greater than a light emitting area of the second light emitting device,
the light adjustment unit comprises a first light adjustment unit and a second light adjustment unit, the through hole of the first light adjustment unit overlaps the first light emitting device, and the through hole of the second light adjustment unit overlaps the second light emitting device,
in the first light adjustment unit, along a direction from the through hole to the light adjustment sub-section, the light adjustment sub-section has a thickness change rate γ1,
in the second light adjustment unit, along a direction from the through hole to the light adjustment sub-section, the light adjustment sub-section has a thickness change rate γ2,
the thickness change rate γ2 is greater than the thickness change rate γ1; and
wherein the light adjustment unit is in a ring-shaped convex lens structure, and the through hole of the light adjustment unit is at a center of the ring-shaped convex lens structure.

### Claim 10 (depends on 9)

A display device comprising a display panel according to claim 9.

### Claim 11

A display panel, comprising:
a base substrate;
a light emitting device layer provided on the base substrate, the light emitting device layer comprising a light emitting device; and
a light adjustment structure layer provided at a side of the light emitting device layer facing away from the base substrate, wherein the light adjustment structure layer comprises a light adjustment unit, and the light adjustment unit comprises a through hole overlapping the light emitting device and a light adjustment sub-section surrounding the through hole,
wherein the light emitting device comprises a first light emitting device and a second light emitting device, a color of light emitted from the first light emitting device is different from a color of light emitted from the second light emitting device, and a light emitting area of the first light emitting device is greater than a light emitting area of the second light emitting device,
the light adjustment unit comprises a first light adjustment unit and a second light adjustment unit, the through hole of the first light adjustment unit overlaps the first light emitting device, and the through hole of the second light adjustment unit overlaps the second light emitting device,
in the first light adjustment unit, along a direction from the through hole to the light adjustment sub-section, the light adjustment sub-section has a thickness change rate γ1,
in the second light adjustment unit, along a direction from the through hole to the light adjustment sub-section, the light adjustment sub-section has a thickness change rate γ2,
the thickness change rate γ2 is greater than the thickness change rate γ1; and
wherein the display panel further comprises an encapsulation layer and a touch film group layer,
the encapsulation layer and the touch film group layer are both located between the light emitting device layer and the light adjustment structure layer, and
the encapsulation layer is located between the touch film group layer and the light emitting device layer, and comprises at least one organic encapsulation layer and at least one inorganic encapsulation layer.

### Claim 12 (depends on 11)

A display device comprising a display panel according to claim 11.