# US 2021/0333584 A1 · Adhesive, display panel and manufacturing method thereof, display device

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- Number: US 2021/0333584 A1
- Document ID: US20210333584A1
- Status: Published application
- Kind: A1
- Application number: 16/466,950
- Filed: 2018-10-19
- Published: 2021-10-28
- Earliest claimed: 2018-04-24
- Assignees: Hefei Xinsheng Optoelectronic Technology Co., Ltd.; Boe Technology Group Co., Ltd.
- Applicants: Hefei Xinsheng Optoelectronic Technology Co., Ltd.; Boe Technology Group Co., Ltd.
- Inventors: Anxin DONG; Haibin YIN
- Web page: https://patentgrep.com/patent/US20210333584A1

## CPC

- G02F 1/1339: Gaskets; Spacers; Sealing of cells
- C09J 5/00: Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
- C09J 11/04: inorganic
- C09J 11/08: Macromolecular additives
- G02F 1/133512: {Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence)}
- C08K 3/04: Carbon
- C08K 9/10: Encapsulated ingredients
- C09J 2203/318: for the production of liquid crystal displays
- C09J 2301/408: additives as essential feature of the adhesive layer
- G02F 2201/08: light absorbing layer
- G02F 2202/28: Adhesive materials or arrangements
- G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H)
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)

## Abstract

An adhesive, a display panel and a manufacturing method thereof, and a display device are provided. The adhesive includes a base bonding material and a light-shielding particle, and the light-shielding particle includes a degradable coating layer and a light-shielding material wrapped by the degradable coating layer.

## Claims

### Claim 1

An adhesive, comprising a base bonding material and a light-shielding particle, wherein the light-shielding particle comprises a degradable coating layer and a light-shielding material wrapped by the degradable coating layer.

### Claim 2 (depends on 1)

The adhesive according to claim 1, wherein the light-shielding material comprises a black ink or a black resin.

### Claim 3 (depends on 1)

The adhesive according to claim 1, wherein the degradable coating layer comprises a photodegradable plastic or a thermally degradable plastic.

### Claim 4 (depends on 1)

A display panel, comprising:
a first substrate;
a second substrate arranged opposite to the first substrate;
a sealant located between the first substrate and the second substrate and configured to assemble the first substrate with the second substrate to form a cell, wherein
the sealant is obtained by performing a curing treatment and a degrading treatment on the adhesive according to claim 1.

### Claim 5 (depends on 4)

The display panel according to claim 4, wherein the second substrate further comprises a light-shielding layer, the light-shielding layer comprises an opening located in a sealing region of the second substrate, and the sealant covers the opening of the light-shielding layer.

### Claim 6 (depends on 5)

The display panel according to claim 5, wherein the first substrate comprises an array substrate, and the second substrate comprises an opposing substrate.

### Claim 7 (depends on 4)

A display device comprising the display panel according to claim 4.

### Claim 8

A display panel comprising:
a first substrate;
a second substrate arranged opposite to the first substrate; and
a sealant located between the first substrate and the second substrate and configured to assemble the first substrate with the second substrate to form a cell, wherein
the sealant comprises a base bonding material, a light-shielding material, and a component obtained upon a degradable coating layer being degraded, and the degradable coating layer is configured to wrap the light-shielding material to constitute a light-shielding particle.

### Claim 9 (depends on 8)

The display panel according to claim 8, wherein the second substrate further comprises a light-shielding layer, the light-shielding layer comprises an opening located in a sealing region of the second substrate, and the sealant covers the opening of the light-shielding layer.

### Claim 10 (depends on 8)

A display device comprising the display panel according to claim 8.

### Claim 11

A manufacturing method of a display panel, comprising:
providing a first substrate;
providing a second substrate;
coating an adhesive on the first substrate or the second substrate, assembling the first substrate with the second substrate by the adhesive to form a cell, wherein the adhesive comprises a base bonding material and a light-shielding particle, the light-shielding particle comprises a degradable coating layer and a light-shielding material wrapped by the degradable coating layer;
curing the adhesive; and
performing a treatment on the adhesive to at least partially degrade the degradable coating layer and to expose the light-shielding material.

### Claim 12 (depends on 11)

The manufacturing method according to claim 11, wherein the light-shielding material comprises a black ink or a black resin.

### Claim 13 (depends on 11)

The manufacturing method according to claim 11, wherein the degradable coating layer comprises a photodegradable plastic or a thermally degradable plastic.

### Claim 14 (depends on 13)

The manufacturing method according to claim 13, wherein the degradable coating layer is a photodegradable plastic,
performing a treatment on the adhesive comprises: performing a light irradiation on the adhesive to degrade the photodegradable plastic and to expose the wrapped light-shielding material, and
the light irradiation comprises ultraviolet light irradiation.

### Claim 15 (depends on 13)

The manufacturing method according to claim 13, wherein the degradable coating layer is a thermally degradable plastic, and
performing a treatment on the adhesive comprises: heating the adhesive to degrade the thermally degradable plastic and to expose the wrapped light-shielding material.

### Claim 16 (depends on 14)

The manufacturing method according to claim 14, wherein performing a treatment on the adhesive further comprises:
heating the adhesive to diffuse the exposed light-shielding material in the adhesive.

### Claim 17 (depends on 11)

The manufacturing method according to claim 11, wherein the second substrate comprises a light-shielding layer, the light-shielding layer comprises an opening located in a sealing region of the second substrate,
the manufacturing method further comprises:
covering the opening of the light-shielding layer with the adhesive upon assembling the first substrate with the second substrate to form the cell; and
performing light irradiation on the adhesive from a side of the second substrate through the opening of the light-shielding layer to cure the adhesive, wherein
the first substrate comprises an array substrate, and the second substrate comprises an opposing substrate.

### Claim 18 (depends on 4)

The display panel according to claim 4, wherein the light-shielding material comprises a black ink or a black resin.

### Claim 19 (depends on 4)

The display panel according to claim 4, wherein the degradable coating layer comprises a photodegradable plastic or a thermally degradable plastic.

### Claim 20 (depends on 10)

The display device according to claim 10, wherein the second substrate further comprises a light-shielding layer, the light-shielding layer comprises an opening located in a sealing region of the second substrate, and the sealant covers the opening of the light-shielding layer.