DISPLAY PANEL AND MANUFACTURING METHOD THEREOF, DISPLAY DEVICE

• US 20200133044A1
• Filed: 05/09/2019
• Published: 04/30/2020
• Est. Priority Date: 10/25/2018
• Status: Active Grant

• Current Assignee: BOE Technology Group Co., Ltd.
• Original Assignee: BOE Technology Group Co., Ltd.
• Inventors: LIU, Liwei, UM, Yoonsung, ZHANG, Hui, LIAO, Feng, HOU, Kai, WANG, Hongrun, ZHANG, Shunhang, JIA, Yue
• Granted Patent: US 11,009,752 B2
• Time in Patent Office: Days
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 1/1337 Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
• CPC Class Codes: G02F 1/13394 spacers regularly patterned on the cell subtrate, e.g. walls, pillars G02F1/133377 takes precedence
• CPC Class Codes: G02F 1/13396 Spacers having different sizes
• CPC Class Codes: G02F 1/134363 for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]
• CPC Class Codes: G02F 2201/50 Protective arrangements

Abstract

The present disclosure relates to a display panel and a manufacturing method thereof, a display device. The display panel includes an array substrate and a color film substrate set oppositely, the array substrate includes multiple subpixel units arranged in an array and an orientation layer covering multiple subpixel units, each subpixel unit includes an opening area; the color film substrate is provided with support columns, orthographic projections of the support columns on the subpixel units are outside the opening areas, the orientation layer is formed with support protrusions which protrude from a surface of the orientation layer, orthographic projections of the support protrusions on the subpixel units are outside the opening areas, the support columns contact top ends of the support protrusions to prevent the support columns from contacting the surface of the orientation layer.

Claims

1. A display panel comprising:

an array substrate, the array substrate including;

multiple subpixel units arranged in an array, each of the subpixel units including an opening area, and

an orientation layer covering the multiple subpixel units; and

a color film substrate set oppositely to the array substrate, the color film substrate being provided with support columns, orthographic projections of the support columns on the subpixel units being outside opening areas of the multiple subpixel units,

wherein, the orientation layer is formed with support protrusions which protrude from a surface of the orientation layer, orthographic projections of the support protrusions on the subpixel units are outside the opening areas, the support columns contact top ends of the support protrusions to prevent the support columns from contacting the surface of the orientation layer.

2. The display panel according to claim 1, wherein the support protrusions include first support protrusions and second support protrusions, orthographic projections of the first support protrusions and the second support protrusions on the subpixel units are respectively located at two sides of the opening areas in a first direction, the orthographic projections of the support columns on the subpixel units are located at one side of the opening areas in a second direction, the support columns contact top ends of the first support protrusions and top ends of the second support protrusions, to prevent the support columns from contacting the surface of the orientation layer;

wherein, the first direction is a direction perpendicular to one of a data line and a gate line of the array substrate, the second direction is perpendicular to the first direction.

3. The display panel according to claim 2, wherein both the first support protrusions and the second support protrusions have a strip shape, and extend in the second direction, a distance between the first support protrusions and the second support protrusions is a, a size of the support columns in the first direction is b, a and b satisfy:

b≥

2a.

4. The display panel according to claim 1, wherein the support columns include main support columns and auxiliary support columns, both orthographic projections of the main support columns and the auxiliary support columns on the subpixel units are outside the opening areas, the auxiliary support columns contact the top ends of the support protrusions to prevent the support columns from contacting the surface of the orientation layer.

5. The display panel according to claim 4, wherein a sum of heights of the auxiliary support columns and the support protrusions is more than a height of the main support columns.

6. The display panel according to claim 3, wherein the support columns include main support columns and auxiliary support columns, both orthographic projections of the main support columns and the auxiliary support columns on the subpixel units are outside the opening areas, the auxiliary support columns contact the top ends of the support protrusions to prevent the support columns from contacting the surface of the orientation layer.

7. The display panel according to claim 1, wherein the array substrate further includes an insulation layer which covers the multiple subpixel units, protrusions are formed on the insulation layer, orthographic projections of the protrusions on the subpixel units are outside the opening areas, the orientation layer covers the insulation layer as well as the protrusions, to form the support protrusions at locations where the orientation layer covers the protrusions.

8. The display panel according to claim 6, wherein the array substrate further includes an insulation layer which covers the multiple subpixel units, protrusions are formed on the insulation layer, orthographic projections of the protrusions on the subpixel units are outside the opening areas, the orientation layer covers the insulation layer as well as the protrusions, to form the support protrusions at locations where the orientation layer covers the protrusions.

9. A manufacturing method of a display panel, comprising:

manufacturing an array substrate, manufacturing the array substrate including;

forming multiple subpixel units arranged in an array;

covering the multiple subpixel units with an orientation layer;

forming support protrusions on the orientation layer, which protrude from a surface of the orientation layer;

wherein, orthographic projections of the support protrusions on the subpixel units are outside opening areas of the multiple subpixel units;

manufacturing a color film substrate, manufacturing the color film substrate including;

forming support columns on one surface at one side of the color film substrate;

aligning and connecting the array substrate and the color film substrate, to cause the support columns to contact top ends of the support protrusions, to prevent the support columns from contacting the surface of the orientation layer;

wherein, orthographic projections of the support columns on the subpixel units are outside the opening areas.

10. The manufacturing method of the display panel according to claim 9, wherein forming the support protrusions on the orientation layer, which protrude from the surface of the orientation layer, includes:

forming first support protrusions and second support protrusions on the orientation layer, which protrude from the surface of the orientation layer;

wherein, orthographic projections of the first support protrusions and the second support protrusions on the subpixel units are respectively located at two sides of the opening areas in a first direction, the first direction is a direction perpendicular to one of a data line and a gate line of the array substrate;

aligning and connecting the array substrate and the color film substrate, to cause the support columns to contact top ends of the support protrusions, to prevent the support columns from contacting the surface of the orientation layer, includes;

aligning and connecting the array substrate and the color film substrate, to cause the support columns to contact top ends of the first support protrusions and top ends of the second support protrusions, to prevent the support columns from contacting the surface of the orientation layer;

wherein, the orthographic projections of the support columns on the subpixel units are located at one side of the opening areas in a second direction, the second direction is perpendicular to the first direction.

11. The manufacturing method of the display panel according to claim 9, wherein covering the multiple subpixel units with the orientation layer and forming the support protrusions on the orientation layer, which protrude from the surface of the orientation layer, includes:

covering the multiple subpixel units with an insulation layer;

forming protrusions on the insulation layer;

wherein, orthographic projections of the protrusions on the subpixel units are outside the opening areas;

covering the insulation layer as well as the protrusions with the orientation layer, to form the support protrusions at locations where the orientation layer covers the protrusions.

12. The manufacturing method of the display panel according to claim 10, wherein covering the multiple subpixel units with the orientation layer and forming the support protrusions on the orientation layer, which protrude from the surface of the orientation layer, includes:

covering the multiple subpixel units with an insulation layer;

forming protrusions on the insulation layer;

wherein, orthographic projections of the protrusions on the subpixel units are outside the opening areas;

covering the insulation layer as well as the protrusions with the orientation layer, to form the support protrusions at locations where the orientation layer covers the protrusions.

13. A display device comprising a display panel, wherein the display panel comprises:

an array substrate, the array substrate including;

multiple subpixel units arranged in an array, each of the subpixel units including an opening area, and

an orientation layer covering the multiple subpixel units; and

a color film substrate set oppositely to the array substrate, the color film substrate being provided with support columns, orthographic projections of the support columns on the subpixel units being outside the opening areas,

wherein, the orientation layer is formed with support protrusions which protrude from a surface of the orientation layer, orthographic projections of the support protrusions on the subpixel units are outside the opening areas, the support columns contact top ends of the support protrusions to prevent the support columns from contacting the surface of the orientation layer.

14. The display panel according to claim 13, wherein the support protrusions include first support protrusions and second support protrusions, orthographic projections of the first support protrusions and the second support protrusions on the subpixel units are respectively located at two sides of the opening areas in a first direction, the orthographic projections of the support columns on the subpixel units are located at one side of the opening areas in a second direction, the support columns contact top ends of the first support protrusions and top ends of the second support protrusions, to prevent the support columns from contacting the surface of the orientation layer;

wherein, the first direction is a direction perpendicular to one of a data line and a gate line of the array substrate, the second direction is perpendicular to the first direction.

15. The display panel according to claim 14, wherein both the first support protrusions and the second support protrusions have a strip shape, and extend in the second direction, a distance between the first support protrusions and the second support protrusions is a, a size of the support columns in the first direction is b, a and b satisfy:

b≥

2a.

16. The display panel according to claim 13, wherein the support columns include main support columns and auxiliary support columns, both orthographic projections of the main support columns and the auxiliary support columns on the subpixel units are outside the opening areas, the auxiliary support columns contact the top ends of the support protrusions to prevent the support columns from contacting the surface of the orientation layer.

17. The display panel according to claim 16, wherein a sum of heights of the auxiliary support columns and the support protrusions is more than a height of the main support columns.

18. The display panel according to claim 15, wherein the support columns include main support columns and auxiliary support columns, both orthographic projections of the main support columns and the auxiliary support columns on the subpixel units are outside the opening areas, the auxiliary support columns contact the top ends of the support protrusions to prevent the support columns from contacting the surface of the orientation layer.

19. The display panel according to claim 13, wherein the array substrate further includes an insulation layer which covers the multiple subpixel units, protrusions are formed on the insulation layer, orthographic projections of the protrusions on the subpixel units are outside the opening areas, the orientation layer covers the insulation layer as well as the protrusions, to form the support protrusions at locations where the orientation layer covers the protrusions.

20. The display panel according to claim 18, wherein the array substrate further includes an insulation layer which covers the multiple subpixel units, protrusions are formed on the insulation layer, orthographic projections of the protrusions on the subpixel units are outside the opening areas, the orientation layer covers the insulation layer as well as the protrusions, to form the support protrusions at locations where the orientation layer covers the protrusions.