Display panel and display device

Patent metadata

Field	Value
Publication number	US-11111438-B2
Application number	US-201916615714-A
Country	US
Kind code	B2
Filing date	Sep 20, 2019
Priority date	Aug 7, 2019
Publication date	Sep 7, 2021
Grant date	Sep 7, 2021

Abstract

The embodiment of the present invention discloses a display panel and a display device. The present invention, by designing a supportive blocking wall, divides a liquid crystal cell into regions, and fills vertical alignment agents with corresponding structures in the different regions of the liquid crystal cell to adjust alignment ability of liquid crystal molecules in gap regions among different liquid crystal layers such that the liquid crystal molecules in the different regions have the same alignment ability to mitigate phenomenon of poor alignment of the liquid crystal molecules and improve display effect of the display panel.

First claim

What is claimed is:

1. A display panel, comprising:
a first substrate;
a second substrate disposed opposite to the first substrate, the second substrate comprising a black matrix;
a liquid crystal cell, the liquid crystal cell comprising the first substrate, the second substrate, and a liquid crystal composition; and
a supportive blocking wall disposed between the first substrate and the second substrate, the supportive blocking wall disposed in a region of the black matrix, the supportive blocking wall dividing the liquid crystal cell into a first liquid crystal region and a second liquid crystal region, wherein the first liquid crystal region is filled with the liquid crystal composition containing a first vertical alignment agent, and the second liquid crystal region is filled with the liquid crystal composition containing a second vertical alignment agent,
wherein a structural formula of the first vertical alignment agent is:

wherein the A is selected from the group consisting of a primary amino group, a secondary amino group, a tertiary amino group, —OH, —COOH, —SOOCH 3 , —CN, —Si(CH 3 ) 3 , —Si(OCH 3 ) 3 , and —SiCl 3 ; the Sp is —O—, the n is 1; the P is a polymerizable group; and the R is alkyl.

2. The display panel as claimed in claim 1 , wherein the display panel comprises a pixel region, the pixel region comprises a red sub-pixel region, a green sub-pixel region, and a blue sub-pixel region, the first liquid crystal region is the blue sub-pixel region, and the second liquid crystal region comprises the red sub-pixel region and the green sub-pixel region.

3. The display panel as claimed in claim 1 , wherein the polymerizable group P is selected from the group consisting of

4. The display panel as claimed in claim 1 , wherein the R is alkyl of a straight chain or a branched chain, and a number of carbon atoms in the alkyl is an integer from 5 to 20.

5. The display panel as claimed in claim 4 , wherein the R comprises a substituent group, and the substituent group comprises fluorine atoms or chlorine atoms.

6. The display panel as claimed in claim 1 , wherein a structural formula of the second vertical alignment agent is:

wherein the A is selected from the group consisting of a primary amino group, a secondary amino group, a tertiary amino group, —OH, —COOH, —SOOCH 3 , —CN, —Si(CH 3 ) 3 , —Si(OCH 3 ) 3 , and —SiCl 3 ; the Sp is —O, the n is 1; the B is a benzene ring or cyclohexane; the P is a polymerizable group and the R is alkyl.

7. The display panel as claimed in claim 6 , wherein the polymerizable group P is selected from the group consisting of

8. The display panel as claimed in claim 6 , wherein the R is alkyl of a straight chain or a branched chain, and a number of carbon atoms in the alkyl is an integer from 5 to 20.

9. The display panel as claimed in claim 8 , wherein the R comprises a substituent group, and the substituent group comprises fluorine atoms or chlorine atoms.

10. The display panel as claimed in claim 1 , wherein the first substrate is a thin film transistor array substrate, and the second substrate is a color filter substrate.

11. A display device, comprising a display panel, and the display panel comprising:
a first substrate;
a second substrate disposed opposite to the first substrate, the second substrate comprising a black matrix;
a liquid crystal cell, the liquid crystal cell comprising the first substrate, the second substrate, and a liquid crystal composition; and
a supportive blocking wall disposed between the first substrate and the second substrate, the supportive blocking wall disposed in a region of the black matrix, the supportive blocking wall dividing the liquid crystal cell into a first liquid crystal region and a second liquid crystal region, wherein the first liquid crystal region is filled with the liquid crystal composition containing a first vertical alignment agent, and the second liquid crystal region is filled with the liquid crystal composition containing a second vertical alignment agent,
wherein a structural formula of the first vertical alignment agent is:

wherein the A is selected from the group consisting of a primary amino group, a secondary amino group, a tertiary amino group, —OH, —COOH, —SOOCH 3 , —CN, —Si(CH 3 ) 3 , —Si(OCH 3 ) 3 , and —SiCl 3 ; the Sp is —O—, the n is 1; the P is a polymerizable group; and the R is alkyl.

12. The display device as claimed in claim 11 , wherein the display panel comprises a pixel region, the pixel region comprises a red sub-pixel region, a green sub-pixel region, and a blue sub-pixel region, the first liquid crystal region is the blue sub-pixel region, and the second liquid crystal region comprises the red sub-pixel region and the green sub-pixel region.

13. The display device as claimed in claim 11 , wherein a structural formula of the second vertical alignment agent is:

wherein the A is selected from the group consisting of a primary amino group, a secondary amino group, a tertiary amino group, —OH, —COOH, —SOOCH 3 , —CN, —Si(CH 3 ) 3 , —Si(OCH 3 ) 3 , and —SiCl 3 ; the Sp is —O, the n is 1; the B is a benzene ring or cyclohexane; the P is a polymerizable group and the R is alkyl.

14. The display device as claimed in claim 11 , wherein the polymerizable group P is selected from the group consisting of

Assignees

• Tcl China Star Optoelectronics Tech Co Ltd

Inventors

• Lan Song

Classifications

• G02F1/133711

  by organic films, e.g. polymeric films · CPC title

• G02F1/1339

  Gaskets; Spacers; Sealing of cells · CPC title

• C09K2019/0448

  the end chain group being a polymerizable end group, e.g. -Sp-P or acrylate · CPC title

• G02F1/133377

  Cells with plural compartments or having plurality of liquid crystal microcells partitioned by walls, e.g. one microcell per pixel · CPC title

• C09K19/56 Primary

  Aligning agents · CPC title