# US 10,768,489 B2 · Display panel with spacers and walls for the spacers, manufacturing method thereof and display device

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- Number: US 10,768,489 B2
- Document ID: US10768489B2
- Status: Granted
- Kind: B2
- Application number: 15/755,985
- Filed: 2017-02-16
- Published: 2018-09-06
- Granted: 2020-09-08
- Earliest claimed: 2016-05-26
- Assignees: Boe Technology Group Co., Ltd.; Hefei Xinsheng Optoelectronics Technology Co., Ltd.
- Applicants: Boe Technology Group Co., Ltd.; Hefei Xinsheng Optoelectronics Technology Co., Ltd.
- Inventors: Songyang Jiang; Yongjun Yoon; Zhou Rui
- Web page: https://patentgrep.com/patent/US10768489B2

## CPC

- G02F 1/13394: {spacers regularly patterned on the cell subtrate, e.g. walls, pillars (G02F1/133377 takes precedence)}
- G02F 1/133512: {Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence)}
- G02F 1/1362: Active matrix addressed cells {(G02F1/134336, G02F1/134363 take precedence)}
- G02F 1/13396: {Spacers having different sizes}
- G02F 1/13398: {Spacer materials; Spacer properties}
- G02F 1/13625: {Patterning using multi-mask exposure}
- 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

## Abstract

Embodiments of the present disclosure provide a display panel and a manufacturing method thereof, and a display device. The display panel includes a first substrate and a second substrate that are opposite to each other. The display panel further includes a spacer located on the first substrate, and at least two walls located on the second substrate. The at least two walls form a recess region. The spacer corresponds to the recess region. The at least two walls are configured to limit a movement of the spacer. According to the embodiments of the present disclosure, the spacer is effectively prevented from slipping into the display region when the display panel is subjected to an external force.

## Claims

### Claim 1

A display panel comprising:
a first substrate and a second substrate opposite each other;
a spacer located on the first substrate; and
at least two walls located on the second substrate, wherein the at least two walls form a recess region, wherein the spacer corresponds to the recess region, and wherein the at least two walls are configured to limit movement of the spacer;
wherein the wall comprises:
a body layer, which is located on the second substrate and protrudes from the second substrate toward the first substrate; and
a buffer layer, which is located on a surface of the body layer facing the first substrate;
wherein a surface roughness of the buffer layer is less than that of the body layer;
wherein a hardness of the buffer layer is less than that of the body layer;
wherein the body layer is formed of a source/drain electrode material and an active layer material;
wherein the buffer layer is formed of a photoresist material;
wherein the display panel further comprises a bulge located in the recess region of the second substrate and in contact with the spacer; and
wherein the bulge is formed of a source/drain electrode material.

### Claim 2 (depends on 1)

The display panel according to claim 1, wherein the first substrate is a color film substrate, and wherein the second substrate is an array substrate.

### Claim 3 (depends on 1)

The display panel according to claim 1,
wherein the first substrate comprises an opaque region; and
wherein the spacer is located in the opaque region of the first substrate.

### Claim 4 (depends on 1)

A method for manufacturing a display panel including a first substrate and a second substrate according to claim 1, comprising:
forming a spacer on the first substrate; and
forming at least two walls on the second substrate, wherein the at least two walls form a recess region, wherein the spacer corresponds to the recess region, and wherein the at least two walls are configured to limit a movement of the spacer.

### Claim 5 (depends on 4)

The method for manufacturing a display panel according to claim 4, wherein forming at least two walls on the second substrate comprises:
forming a body layer, which is located on the second substrate and protrudes from the second substrate toward the first substrate; and
forming a buffer layer, which is located on the surface of the body layer facing the first substrate.

### Claim 6 (depends on 4)

The method for manufacturing a display panel according to claim 4, further comprising forming a bulge, which is located in the recess region of the second substrate and in contact with the spacer.

### Claim 7 (depends on 6)

The method for manufacturing a display panel according to claim 6, wherein the body layer, the buffer layer, and the bulge are formed in the same photolithography process using at least one of a gray scale mask and a halftone mask.

### Claim 8 (depends on 7)

The method for manufacturing a display panel according to claim 7, wherein in a photoresist-removal step in the photolithography process, a photoresist on the body layer is retained to form the buffer layer.

### Claim 9 (depends on 1)

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

### Claim 10 (depends on 9)

The display device according to claim 9, wherein the wall comprises:
a body layer, which is located on the second substrate and protrudes from the second substrate toward the first substrate; and
a buffer layer, which is located on a surface of the body layer facing the first substrate.

### Claim 11 (depends on 10)

The display device according to claim 10, wherein a surface roughness of the buffer layer is less than that of the body layer.

### Claim 12 (depends on 1)

The display panel according to claim 1, wherein a slope angle of a side of the buffer layer away from the spacer is less than 45 degrees.