Display panel and display device

Patent metadata

Field	Value
Publication number	US-10962843-B2
Application number	US-201916552214-A
Country	US
Kind code	B2
Filing date	Aug 27, 2019
Priority date	Sep 30, 2018
Publication date	Mar 30, 2021
Grant date	Mar 30, 2021

Abstract

A display panel and a display device are provided. The display panel includes a first substrate and a second substrate, that are oppositely disposed. The display panel also includes a display material layer and support pillars, that are disposed between the first substrate and the second substrate. Further, the display panel includes a first region, a second region disposed surrounding the first region, and a third region disposed surrounding the second region. The first region does not contain any support pillar. The support pillars are disposed in the second and third regions, and have an area density in the second region larger than an area density in the third region.

First claim

What is claimed is:

1. A display panel, comprising:
a first substrate and a second substrate, that are oppositely disposed;
a display material layer and support pillars, that are disposed between the first substrate and the second substrate; and
a first region, a second region disposed surrounding the first region, and a third region disposed surrounding the second region, wherein:
the first region does not contain any support pillar or display pixels,
the support pillars are disposed in the second and third regions, and have an area density in the second region larger than an area density in the third region, and
an overall area density of the support pillars in the first region and the second region is consistent with the area density in the third region, such that an overall area density of the display panel is uniform in order to have a same withstand pressure ability.

2. The display panel according to claim 1 , wherein:
the second region includes a first sub-region and a second sub-region, wherein the first sub-region is disposed adjacent to the first region, and the second sub-region is disposed between the first sub-region and the third region; and
the support pillars have an area density in the first sub-region larger than an area density in the second sub-region.

3. The display panel according to claim 1 , wherein:
in a unit area, a quantity of the support pillars in the second region is larger than a quantity of the support pillars in the third region.

4. The display panel according to claim 3 , wherein:
the support pillars in the second region and the third region has a same shape and a same size.

5. The display panel according to claim 1 , wherein:
the support pillars include a plurality of first support pillars and a plurality of second support pillars, wherein an area of an orthographic projection of a first support pillar of the plurality of first support pillars on the first substrate is larger than an area of an orthographic projection of a second support pillar of the plurality of second support pillars on the first substrate; and
the second region includes the plurality of first support pillars, and the third region includes the plurality of second support pillars.

6. The display panel according to claim 5 , wherein:
in a unit area, a quantity of the plurality of first support pillars in the second region equals to a quantity of the plurality of second support pillars in the third region.

7. The display panel according to claim 1 , wherein:
the area density of the support pillars in the second region is obtained by a calculation according to an area of the first region, an area of the second region, and the area density of the support pillars in the third region.

8. The display panel according to claim 7 , wherein:
the area density of the support pillars in the second region is calculated using a formula:
d B =( S B +S C )* d A /S B ,

wherein d B is the area density of the support pillars in the second region, d A is the area density of the support pillars in the third region, S B is the area of the second region, and S C is the area of the first region.

9. The display panel according to claim 8 , further including:
a display region having the display pixels, a frame region covered by a black matrix, and a light transmission region uncovered by the display pixels and the black matrix, wherein:
the first region is the light transmission region,
the frame region includes a first frame region disposed close to an outer edge of the display panel and a second frame region disposed surrounding the light transmission region, and
the second region includes the second frame region.

10. The display panel according to claim 9 , wherein:
the second region is the second frame region, and
the third region is the display region.

11. The display panel according to claim 9 , wherein:
the display region includes a first display region disposed close to the second frame region and a second display region disposed between the first display region and the first frame region, wherein:
the third region is the second display region, and the second region includes the second frame region and the first display region, and
a sum of the area of the first region and the area of the second region is larger than or equal to a predetermined area threshold.

12. The display panel according to claim 11 , wherein:
the predetermined area threshold is 100 mm 2 .

13. The display panel according to claim 9 , wherein:
the first region has one of a circular shape and an elliptical shape.

14. The display panel according to claim 1 , wherein:
an orthographic projection of the support pillar on the first substrate has a shape including a circular shape, an elliptical shape, a quadrangular shape, an elongated shape, or a combination thereof.

15. The display panel according to claim 1 , wherein:
the display material layer includes a liquid crystal material, and
the second substrate includes a color resist layer, wherein the color resist layer is not disposed in the first region.

16. The display panel according to claim 1 , wherein:
the display material layer includes an organic light-emitting display material, and
the organic light-emitting display material is not disposed in the first region.

17. A display device, comprising:
a display panel, wherein the display panel includes:
a first substrate and a second substrate, that are oppositely disposed;
a display material layer and support pillars, that are disposed between the first substrate and the second substrate; and
a first region, a second region disposed surrounding the first region, and a third region disposed surrounding the second region, wherein:
the first region does not contain any support pillar or display pixels,
the support pillars are disposed in the second and third regions, and have an area density in the second region larger than an area density in the third region, and
an overall area density of the support pillars in the first region and the second region is consistent with the area density in the third region, such that an overall area density of the display panel is uniform in order to have a same withstand pressure ability.

18. The display device according to claim 17 , wherein:
in a unit area, a quantity of the support pillars in the second region is larger than a quantity of the support pillars in the third region.

19. The display device according to claim 18 , wherein:
the support pillars in the second region and the third region has a same shape and a same size.

20. The display device according to claim 17 , wherein:
the area density of the support pillars in the second region is obtained by a calculation according to an area of the first region, an area of the second region, and the area density of the support pillars in the third region.

Assignees

• Xiamen Tianma Micro Electronics Co Ltd

Inventors

• Wu Ling
• Shen Boping

Classifications

• G02F1/13394 Primary

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

• G02F1/133512

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

• G02F1/136209

  Light shielding layers, e.g. black matrix, incorporated in the active matrix substrate, e.g. structurally associated with the switching element · CPC title

• G06F1/1686

  the I/O peripheral being an integrated camera · CPC title

• G02F1/133514

  Colour filters · CPC title