Display substrate, manufacturing method thereof and display panel

Patent metadata

Field	Value
Publication number	US-10908331-B2
Application number	US-201815993882-A
Country	US
Kind code	B2
Filing date	May 31, 2018
Priority date	Sep 25, 2017
Publication date	Feb 2, 2021
Grant date	Feb 2, 2021

Abstract

A display substrate and a manufacturing method thereof, and a display panel are provided. The display substrate includes a base substrate with a black matrix BM disposed thereon. The base substrate is provided with a display area and a non-display area, and the BM disposed in the non-display area comprises a first BM portion and a second BM portion. The first BM portion and the second BM portion are sequentially arranged in a direction away from the center of the base substrate, and a gap exists between the first BM portion and the second BM portion. When an external electric field exists around the display substrate, the second BM portion can effectively shield the external electric field, thereby effectively preventing the external electric field from affecting the display area of the display panel. Thus, the display effect of the display substrate is improved.

First claim

What is claimed is:

1. A display substrate, comprising:
a base substrate with a black matrix disposed thereon;
the base substrate being provided with a display area and a non-display area, and the black matrix disposed in the non-display area comprising a first black matrix portion and a second black matrix portion, wherein
the first black matrix portion and the second black matrix portion are sequentially arranged in a direction away from the center of the base substrate and are electrically isolated from each other, and a gap exists between the first black matrix portion and the second black matrix portion;
a plurality of color resistance blocks are further disposed in the display area of the base substrate, any position in the gap is a first position, a first color resistance block in the plurality of the color resistance blocks is close to the first position, and the target material filled in the first position is the same as a material of the first color resistance block;
a covering layer is disposed on the side, away from the base substrate, of the first BM portion, and the covering layer is made of the same material as the first color resistance block and is connected with the first color resistance block and the target material in the first position respectively; and
the first color resistance block is made of a colored gel.

2. The display substrate according to claim 1 , wherein the first black matrix portion, as well as the second black matrix portion, takes the shape of a ring, and the second black matrix portion surrounds the first black matrix portion.

3. The display substrate according to claim 2 , wherein the first black matrix portion surrounds the display area.

4. The display substrate according to claim 1 , wherein the width of the gap is 10 μm to 20 μm.

5. The display substrate according to claim 1 , wherein a frame sealant is disposed on the side, away from the base substrate, of the second black matrix portion and permeates the gap.

6. The display substrate according to claim 1 , wherein the gap has a vacuum environment inside.

7. A manufacturing method of a display substrate, comprising:
providing a base substrate; and
forming a black matrix on the base substrate, wherein
the base substrate is provided with a display area and a non-display area, the black matrix disposed in the non-display area comprises a first black matrix portion and a second black matrix portion which are sequentially arranged in a direction away from the center of the base substrate and are electrically isolated from each other, and a gap exists between the first black matrix portion;
a plurality of color resistance blocks are further disposed in the display area of the base substrate, any position in the gap is a first position, a first color resistance block in the plurality of the color resistance blocks is close to the first position, and the target material filled in the first position is the same as a material of the first color resistance block;
a covering layer is disposed on the side, away from the base substrate, of the first BM portion, and the covering layer is made of the same material as the first color resistance block and is connected with the first color resistance block and the target material in the first position respectively; and
the first color resistance block is made of a colored gel.

8. The method according to claim 7 , wherein said forming the black matrix on the base substrate comprises:
forming a black matrix material layer on the base substrate;
processing the black matrix material layer through a primary composition process to obtain a black matrix pattern, wherein the black matrix pattern located in the non-display area comprises a first black matrix portion and a second black matrix portion; and
making the gap between the first black matrix portion and the second black matrix portion to have a vacuum environment inside.

9. The method according to claim 8 , after said providing the base substrate, further comprising:
forming a plurality of color resistance blocks in the display area of the base substrate, wherein the first black matrix portion surrounds the plurality of color resistance blocks.

10. A display panel, comprising a display substrate, wherein the display substrate comprises a base substrate with a black matrix disposed thereon;
the base substrate is provided with a display area and a non-display area, and the black matrix disposed in the non-display area comprises a first black matrix portion and a second black matrix portion; and
the first black matrix portion and the second black matrix portion are sequentially arranged in a direction away from the center of the base substrate and are electrically isolated from each other, and a gap exists between the first black matrix portion and the second black matrix portion;
a plurality of color resistance blocks are further disposed in the display area of the base substrate, any position in the gap is a first position, a first color resistance block in the plurality of the color resistance blocks is close to the first position, and the target material filled in the first position is the same as a material of the first color resistance block;
a covering layer is disposed on the side, away from the base substrate, of the first BM portion, and the covering layer is made of the same material as the first color resistance block and is connected with the first color resistance block and the target material in the first position respectively; and
the first color resistance block is made of a colored gel.

11. The display panel according to claim 10 , wherein the first black matrix portion, as well as the second black matrix portion, takes the shape of a ring, and the second black matrix portion surrounds the first black matrix portion.

Assignees

• Boe Technology Group Co Ltd
• Beijing Boe Display Tech Co

Inventors

• Feng He
• Wang Dong
• Wan Jiyu
• Yang Tonghua

Classifications

• H10K59/8792

  comprising light absorbing layers, e.g. black layers · CPC title

• H10K59/8722

  Peripheral sealing arrangements, e.g. adhesives, sealants · CPC title

• G02B5/201 Primary

  in the form of arrays · CPC title

• G02F1/133512 Primary

  Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence) · CPC title

• G02F1/136204

  Arrangements to prevent high voltage or static electricity failures · CPC title