# US 12,604,649 B2 · Display panel having isolation layer with different thicknesses

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- Number: US 12,604,649 B2
- Document ID: US12604649B2
- Status: Granted
- Kind: B2
- Application number: 17/853,084
- Filed: 2022-06-29
- Published: 2022-10-13
- Granted: 2026-04-14
- Earliest claimed: 2020-07-03
- Assignees: KunShan Go-Visionox Opto-Electronics Co., Ltd
- Applicants: KunShan Go-Visionox Opto-Electronics Co., Ltd
- Inventors: Zhimin Yan; Zhihui Xiao; Shupeng Wang; Huihui Meng
- Web page: https://patentgrep.com/patent/US12604649B2

## CPC

- H10K 71/00: Manufacture or treatment specially adapted for the organic devices covered by this subclass
- H10K 59/122: Pixel-defining structures or layers, e.g. banks
- H10K 59/8731: {multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers}
- H10K 59/874: {including getter material or desiccant}
- H10K 2102/351: {Thickness}
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES

## Abstract

Provided is a display panel. The display panel includes a substrate; multiple light-emitting structures disposed on the substrate; an obstruction layer disposed on the substrate and surrounding the multiple light-emitting structures; an isolation layer disposed on the substrate and covering the multiple light-emitting structures, where at least part of the isolation layer covers the obstruction layer; and an encapsulation layer disposed on the substrate and covering the isolation layer and the obstruction layer. A manufacturing method for the display panel includes forming the obstruction layer surrounding the multiple light-emitting structures on the substrate and forming the isolation layer covering the multiple light-emitting structures and partially covering the obstruction layer.

## Claims

### Claim 1

A display panel, comprising:
a substrate;
a plurality of light-emitting structures disposed on the substrate;
an obstruction layer disposed on the substrate and configured to prevent oxygen and vapor entering the display panel, the obstruction layer surrounding the plurality of light-emitting structures;
an isolation layer disposed on the substrate and covering the plurality of light-emitting structures, wherein a first part of the isolation layer covers the obstruction layer; and
an encapsulation layer disposed on the substrate and covering the isolation layer and the obstruction layer,
wherein a thickness of the first part of the isolation layer covering the obstruction layer is less than a thickness of a second part of the isolation layer that does not cover the obstruction layer, the isolation layer comprises silicon oxide, the thickness of the first part of the isolation layer is less than or equal to 10 nanometers, and the thickness of the second part of the isolation layer ranges from 20 nanometers to 200 nanometers.

### Claim 2 (depends on 1)

The display panel according to claim 1, further comprising
a barricade disposed on the substrate, wherein the barricade surrounds the plurality of light-emitting structures, the obstruction layer comprises a first obstruction layer, and the first obstruction layer is disposed on a side of the barricade away from the plurality of light-emitting structures.

### Claim 3 (depends on 2)

The display panel according to claim 2, wherein the barricade comprises at least two sub-barricades, and each of the at least two sub-barricades surrounds the plurality of light-emitting structures; and the obstruction layer further comprises a second obstruction layer, and the second obstruction layer is disposed between adjacent two of the at least two sub-barricades.

### Claim 4 (depends on 3)

The display panel according to claim 3, wherein the barricade comprises a first sub-barricade that is adjacent to a second sub-barricade and the second obstruction layer is disposed between the first sub-barricade and the second sub-barricade.

### Claim 5 (depends on 2)

The display panel according to claim 2, wherein the obstruction layer comprises a first side face adjacent to an edge of the display panel, the isolation layer comprises a second side face adjacent to the edge of the display panel, the first side face is located on a side of the second side face away from the plurality of light-emitting structures, and along a direction parallel to a surface of the substrate, a distance between the first side face and the second side face ranges from 30 micrometers to 50 micrometers.

### Claim 6 (depends on 2)

The display panel according to claim 2, wherein the encapsulation layer comprises an organic layer and an inorganic layer, and the barricade is covered by the inorganic layer in the encapsulation layer.

### Claim 7 (depends on 1)

The display panel according to claim 1, wherein the encapsulation layer covers the obstruction layer and encloses a first side face of the obstruction layer adjacent to an edge of the display panel.

### Claim 8 (depends on 7)

The display panel according to claim 7, wherein along a direction parallel to a surface of the substrate, a distance between a third side face of the encapsulation layer and the first side face is greater than 30 micrometers, wherein the third side face of the encapsulation layer is adjacent to the edge of the display panel.

### Claim 9 (depends on 1)

The display panel according to claim 1, wherein the encapsulation layer covers the isolation layer and encloses a second side face of the isolation layer adjacent to an edge of the display panel.

### Claim 10 (depends on 9)

The display panel according to claim 9, wherein along a direction parallel to a surface of the substrate, a distance between a third side face of the encapsulation layer and the second side face is greater than 30 micrometers, wherein the third side face of the encapsulation layer is adjacent to the edge of the display panel.

### Claim 11 (depends on 1)

The display panel according to claim 1, wherein the substrate comprises a display region and a non-display region, the plurality of light-emitting structures are located in the display region of the substrate; and the obstruction layer is located in the non-display region of the display panel and surrounds the plurality of light-emitting structures.

### Claim 12 (depends on 11)

The display panel according to claim 11, wherein the encapsulation layer comprises an organic layer and an inorganic layer, the isolation layer and the inorganic layer use a same mask.

### Claim 13 (depends on 12)

The display panel according to claim 12, wherein the inorganic layer comprises silicon oxynitride or silicon nitride.

### Claim 14 (depends on 1)

The display panel according to claim 1, wherein the obstruction layer comprises a first side face adjacent to an edge of the display panel, the isolation layer comprises a second side face adjacent to the edge of the display panel, the encapsulation layer comprises a third side face adjacent to the edge of the display panel, and the first side face, the second side face and the third side face are located on a same plane.

### Claim 15 (depends on 1)

The display panel according to claim 1, wherein metal in the obstruction layer comprises aluminum and magnesium.

### Claim 16 (depends on 1)

The display panel according to claim 1, wherein a thickness of the obstruction layer ranges from 10 nanometers to 150 nanometers.

### Claim 17 (depends on 1)

The display panel according to claim 1, wherein the obstruction layer is located in a non-display region of the display panel and is arranged continuously along a periphery of a display region.

### Claim 18 (depends on 1)

A manufacturing method for the display panel according to claim 1, comprising:
providing the substrate;
disposing the plurality of light-emitting structures on the substrate;
forming the isolation layer such that the isolation layer covers the plurality of light-emitting structures;
forming the obstruction layer such that at least part of the isolation layer covers the obstruction layer; and
forming the encapsulation layer such that the encapsulation layer covers the isolation layer and the obstruction layer.

### Claim 19 (depends on 18)

The manufacturing method for the display panel according to claim 18, wherein the reducing gas in the step of introducing the reducing gas to form the isolation layer is hydrogen.