Display panel and its manufacturing method and a display

Patent metadata

Field	Value
Publication number	US-9588378-B2
Application number	US-201314375648-A
Country	US
Kind code	B2
Filing date	Oct 23, 2013
Priority date	Jun 28, 2013
Publication date	Mar 7, 2017
Grant date	Mar 7, 2017

Abstract

The present invention relates to a display panel having a display region and a non-display region, comprising: a first substrate and a second substrate oppositely provided and a layer of liquid crystal molecule located between the first substrate and the second substrate, wherein the first substrate and the second substrate each are provided with an alignment film at a position corresponding to the display region, and each are provided with a sealant region for applying sealant at a position corresponding to the non-display region, wherein: the sealant region on a surface of the first substrate facing the liquid crystal molecule layer is provided with a first raised layer by which the sealant region of the first substrate is higher than the display region thereof; and the sealant region on a surface of the second substrate facing the liquid crystal molecule layer is provided with a second raised layer by which the sealant region of the second substrate is higher than the display region thereof. The above display panel has improved display quality and has a narrow border at the same time.

First claim

The invention claimed is:

1. A display panel having a display region and a non-display region, comprising:
a first substrate and a second substrate oppositely provided and a layer of liquid crystal molecule located between the first substrate and the second substrate, wherein the first substrate and the second substrate each are provided with an alignment film at a position corresponding to the display region, and each are provided with a sealant region for applying sealant at a position corresponding to the non-display region,
wherein the sealant region on a surface of the first substrate facing the liquid crystal molecule layer is provided with a first raised layer by which the sealant region of the first substrate is higher than the display region thereof, wherein only a base layer of the alignment film is disposed between the first raised layer and the sealant region; and
the sealant region on a surface of the second substrate facing the liquid crystal molecule layer is provided with a second raised layer by which the sealant region of the second substrate is higher than the display region thereof, wherein only a base layer of the alignment film is disposed between the second raised layer and the sealant region.

2. The display panel as claimed in claim 1 , wherein the first raised layer or the second raised layer is formed by one layer of the color filter layers of the color filter sheet or by a stack of layers of the color filter layers of the color filter sheet.

3. The display panel as claimed in claim 1 , wherein the first raised layer and/or the second raised layer is formed of a metal material, a metal alloy material, a resin material or a photoresist material.

4. The display panel as claimed in claim 1 , further comprising a spacer layer located between the first substrate and the second substrate, wherein the first raised layer or the second raised layer is formed by the spacer layer.

5. The display panel as claimed in claim 1 , further comprising a spacer layer located between the first substrate and the second substrate, wherein the first raised layer or the second raised layer is formed by one layer from the color filter layers of the color filter sheet and the spacer layer or by a stack of layers from the color filter layers of the color filter sheet and the spacer layer.

6. The display panel as claimed in claim 1 , wherein the first raised layer and the second raised layer have a thickness less than or equal to half of a cell gap of a liquid crystal cell.

7. A method for manufacturing a display panel having a display region and a non-display region, and the display panel comprising a first substrate and a second substrate which are oppositely provided and a layer of liquid crystal molecule provided between the first substrate and the second substrate, the first substrate and the second substrate, corresponding to the non-display region, being respectively provided with a sealant region for applying sealant, the method comprising:
forming a first raised layer pattern in the sealant region of the first substrate such that the sealant region of the first substrate is higher than the display region of the first substrate;
forming a second raised layer pattern in the sealant region of the second substrate such that the sealant region of the second substrate is higher than the display region of the second substrate;
forming an alignment film in the display region of the first substrate and the display region of the second substrate, wherein only a base layer of the alignment film is disposed between the first raised layer and the sealant region, and only a base layer of the alignment film is disposed between the second raised layer and the sealant region;
cell-assembling the first substrate and the second substrate; and
providing liquid crystal molecules between the first substrate and the second substrate.

8. The method for manufacturing the display panel as claimed in claim 7 , wherein forming of the first raised layer pattern in the sealant region of the first substrate or forming of the second raised layer pattern in the sealant region of the second substrate comprises:
forming a first color filter layer pattern in the sealant region of the first substrate or the sealant region of the second substrate;
forming a second color filter layer pattern on the first color filter layer pattern;
forming a third color filter layer pattern on the second color filter layer pattern;
the first, second and third color filter layer patterns stacking to form the first raised layer pattern or the second raised layer pattern.

9. The method for manufacturing the display panel as claimed in claim 7 , wherein forming of the first raised layer pattern in the sealant region of the first substrate or forming of the second raised layer pattern in the sealant region of the second substrate comprises:
forming a spacer in the sealant region of the first substrate or in the sealant region of the second substrate, wherein the spacer forms the first raised layer patter or the second raised layer pattern.

10. The method for manufacturing the display panel as claimed in claim 7 , wherein forming of the first raised layer pattern in the sealant region of the first substrate or forming of the second raised layer pattern in the sealant region of the second substrate comprises:
forming a layer of photoresist material in the sealant region of the first substrate and/or in the sealant region of the second substrate, wherein the photoresist material layer forming the first raised layer patter and/or the second raised layer pattern.

11. The method for manufacturing the display panel as claimed in claim 7 , wherein respectively forming of the alignment film in the display region of the first substrate and the display region of the second substrate comprises:
transferring decomposition type photo-alignment liquid on the first substrate and the second substrate so that the photo-alignment liquid on the first raised layer pattern and the second raised layer pattern is flowed to the non-display region respectively between the sealant regions of the first substrate and the second substrate and the display regions thereof;
irradiating the first substrate and the second substrate with UV light in a certain direction; and
washing the first substrate and the second substrate.

12. The method for manufacturing the display panel as claimed in claim 11 , between a step of irradiating the first substrate and the second substrate with UV light in a certain direction and a step of washing the first substrate and the second substrate, further comprising:
exposing the sealant region of the first substrate and the sealant region of the second substrate to full-polarization UV light by using a mask plate.

13. A display device comprising a display panel as claimed in claim 1 .

Assignees

• Boe Technology Group Co Ltd
• Chengdu Boe Optoelect Tech Co

Inventors

• Chen Zhenxia
• Jiang ni
• Zhang Junrui
• Lim Junhwan

Classifications

• G02F1/1339 Primary

  Gaskets; Spacers; Sealing of cells · CPC title

• G02F1/133788

  by light irradiation, e.g. linearly polarised light photo-polymerisation · CPC title

• G02F1/13394

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

• G02F1/133514

  Colour filters · CPC title

• G02F1/1337

  Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers · CPC title