Manufacturing method of display panel, display panel, and displaying device

Patent metadata

Field	Value
Publication number	US-12372833-B2
Application number	US-202117913780-A
Country	US
Kind code	B2
Filing date	Nov 4, 2021
Priority date	Apr 23, 2021
Publication date	Jul 29, 2025
Grant date	Jul 29, 2025

Abstract

A manufacturing method of a display panel, a display panel and a displaying device. The display panel includes an opening area and a non-opening area, and the display panel includes: a first base plate and a second base plate arranged in align with each other, and a liquid-crystal layer between the first base plate and the second base plate. The first base plate includes: a first substrate, and a post spacer provided on one side of the first substrate that is close to the second base plate. The second base plate includes: a second substrate, and a spacing platform provided on one side of the second substrate that is close to the first base plate, wherein the spacing platform is located within the non-opening area. The post spacer is arranged opposite to the spacing platform.

First claim

The invention claimed is:

1. A display panel including an opening area and a non-opening area, and the display panel comprises: a first base plate and a second base plate arranged in align with each other, and a liquid-crystal layer filled between the first base plate and the second base plate;
the first base plate comprises: a first substrate, and a post spacer provided on one side of the first substrate that is close to the second base plate;
the second base plate comprises: a second substrate, and a spacing platform provided on one side of the second substrate that is close to the first base plate, wherein the spacing platform is located within the non-opening area, the spacing platform and a color-resistance layer are connected to be of an integral structure, and a material of the spacing platform is a material of the color-resistance layer; and
the post spacer is arranged opposite to the spacing platform, and an orthographic projection on the second substrate of a first surface of the post spacer that is away from the first substrate is located within an area of an orthographic projection on the second substrate of a second surface of the spacing platform that is away from the second substrate,
wherein a distance between a boundary of the orthographic projection of the first surface on the second substrate and a boundary of the orthographic projection of the second surface on the second substrate is greater than or equal to 10 μm, a distance between a boundary of an orthographic projection of the spacing platform on the second substrate and a boundary of the non-opening area is greater than or equal to 20 μm, a thickness of the spacing platform is greater than or equal to 0.9 μm, and less than or equal to 1.2 μm, and a thickness of the post spacer is greater than or equal to 2 micrometers, and less than or equal to 2.6 μm,
the second base plate further comprises: a thin-film transistor provided on one side of the second substrate that is close to the spacing platform, and a planarization layer provided on one side of the thin-film transistor that is away from the second substrate, and
the color-resistance layer is provided between the thin-film transistor and the planarization layer, and an orthographic projection of the color-resistance layer on the second substrate covers the opening area.

2. The display panel according to claim 1 , wherein a geometric center of the orthographic projection of the first surface on the second substrate coincides with a geometric center of the orthographic projection of the second surface on the second substrate.

3. The display panel according to claim 1 , wherein a shape of the first surface and a shape of the second surface are the same.

4. The display panel according to claim 1 , wherein a shape of the second surface is an elliptical shape or a rectangle.

5. The display panel according to claim 1 , wherein the post spacer comprises a first post spacer, and a sum of a thickness of the first post spacer and a thickness of the spacing platform arranged opposite to the first post spacer is greater than a thickness of the liquid-crystal layer.

6. The display panel according to claim 5 , wherein the first post spacer arranged opposite to the spacing platform is in a compression state, and the thickness of the spacing platform arranged opposite to the first post spacer is greater than a compression volume thickness of the first post spacer in the compression state.

7. The display panel according to claim 5 , wherein the post spacer further comprises a second post spacer, the first post spacer and the second post spacer are arranged opposite to different spacing platforms, and a sum of a thickness of the second post spacer and a thickness of the spacing platform arranged opposite to the second post spacer is less than the thickness of the liquid-crystal layer.

8. The display panel according to claim 1 , wherein the material of the spacing platform further comprises a material of the planarization layer.

9. The display panel according to claim 8 , wherein a pixel electrode is provided on one side of the planarization layer that is away from the second substrate, an orthographic projection of the pixel electrode on the second substrate covers the opening area, and a material of the planarization layer comprises an acrylic resin and a photoinitiator.

10. The display panel according to claim 1 , wherein the post spacer comprises a first post spacer and a second post spacer, a thickness of the first post spacer is great than a thickness of the second post spacer, and the first post spacer and the spacing platform are directly contacted.

11. A displaying device, wherein the displaying device comprises a display panel, the display panel including an opening area and a non-opening area, and the display panel comprises: a first base plate and a second base plate arranged in align with each other, and a liquid-crystal layer filled between the first base plate and the second base plate;
the first base plate comprises: a first substrate, and a post spacer provided on one side of the first substrate that is close to the second base plate;
the second base plate comprises: a second substrate, and a spacing platform provided on one side of the second substrate that is close to the first base plate, wherein the spacing platform is located within the non-opening area, the spacing platform and a color-resistance layer are connected to be of an integral structure, and a material of the spacing platform is a material of the color-resistance layer; and
the post spacer is arranged opposite to the spacing platform, and an orthographic projection on the second substrate of a first surface of the post spacer that is away from the first substrate is located within an area of an orthographic projection on the second substrate of a second surface of the spacing platform that is away from the second substrate,
wherein a distance between a boundary of the orthographic projection of the first surface on the second substrate and a boundary of the orthographic projection of the second surface on the second substrate is greater than or equal to 10 μm, a distance between a boundary of an orthographic projection of the spacing platform on the second substrate and a boundary of the non-opening area is greater than or equal to 20 μm, a thickness of the spacing platform is greater than or equal to 0.9 μm, and less than or equal to 1.2 μm, and a thickness of the post spacer is greater than or equal to 2 micrometers, and less than or equal to 2.6 μm,
the second base plate further comprises: a thin-film transistor provided on one side of the second substrate that is close to the spacing platform, and a planarization layer provided on one side of the thin-film transistor that is away from the second substrate, and
the color-resistance layer is provided between the thin-film transistor and the planarization layer, and an orthographic projection of the color-resistance layer on the second substrate covers the opening area.

12. The displaying device according to claim 11 , wherein a geometric center of the orthographic projection of the first surface on the second substrate coincides with a geometric center of the orthographic projection of the second surface on the second substrate.

13. The displaying device according to claim 11 , wherein a shape of the first surface and a shape of the second surface are the same.

14. A manufacturing method of a display panel, wherein the display panel comprises an opening area and a non-opening area, and the manufacturing method comprises:
providing a first substrate and a second substrate;
forming a post spacer on on

Assignees

• Hefei Xinsheng Optoelectronics Technology Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Guo Lei
• Jiang Liangliang
• Li Heng
• Dai Ke
• Liu Jiaqing

Classifications

• G02F1/13396

  Spacers having different sizes · CPC title

• G02F1/13398

  Spacer materials; Spacer properties · CPC title

• G02F1/13394 Primary

  spacers regularly patterned on the cell subtrate, e.g. walls, pillars (G02F1/133377 takes precedence) · CPC title