Curved display device and display panel thereof

Patent metadata

Field	Value
Publication number	US-10459296-B2
Application number	US-201815910600-A
Country	US
Kind code	B2
Filing date	Mar 2, 2018
Priority date	Dec 27, 2017
Publication date	Oct 29, 2019
Grant date	Oct 29, 2019

Abstract

The present invention provides a curved display device and a display panel thereof. The display panel includes a CF substrate, a TFT substrate, a plurality of photo spacers, a liquid crystal layer and a sealing layer. The liquid crystal layer is located between the CF and the TFT substrates, the plurality of photo spacers is disposed on a surface of the CF substrate facing the TFT substrate, the sealing layer is disposed between the CF and the TFT substrates and surrounds an edge of the liquid crystal layer, the liquid crystal layer includes an intermediate region and two edge regions located at two sides of the intermediate region, a stress generated from the photo spacers located in the intermediate region on the liquid crystals in the intermediate region is smaller than that generated from the photo spacers located in the edge regions on the liquid crystals in the edge regions.

First claim

What is claimed is:

1. A display panel, comprising a color filter, CF substrate, a thin film transistor, TFT substrate, a plurality of photo spacers, a liquid crystal layer and a sealing layer, wherein the liquid crystal layer is disposed between the CF substrate and the TFT substrate, the plurality of photo spacers is disposed on a surface of the CF substrate facing the TFT substrate, the sealing layer is disposed between the CF substrate and the TFT substrate and surrounds an edge of the liquid crystal layer, the liquid crystal layer comprises an intermediate region and two edge regions located at two sides of the intermediate region, a stress generated from the photo spacers located in the intermediate region on the liquid crystals in the intermediate region is smaller than the stress generated from the photo spacers located in the edge regions on the liquid crystals in the edge regions, to keep the CF substrate and the TFT substrate at a constant gap;
wherein the photo spacers located in the two edge regions are symmetrical to the intermediate region, the photo spacers located in the intermediate region are symmetrical to a central axis of the CF substrate; and
wherein the density of the photo spacers located in the intermediate region gradually increases in a direction from the intermediate region to the edge region, and the density of the photo spacers located in the edge region gradually increases in a direction from the intermediate region to the edge region.

2. The display panel according to claim 1 , wherein heights of the photo spacers in the intermediate region are smaller than the heights of the photo spacers in the edge region.

3. The display panel according to claim 2 , wherein heights of the photo spacers located in the intermediate region gradually increase in a direction from the intermediate region to the edge region.

4. The display panel according to claim 3 , wherein heights of the photo spacers located in the edge region gradually increase in a direction from the intermediate region to the edge region.

5. The display panel according to claim 2 , wherein heights of the photo spacers located in the edge region gradually increase in a direction from the intermediate region to the edge region.

6. The display panel according to claim 1 , wherein a maximum length in the direction parallel to the CF substrate of the photo spacers in the intermediate region is smaller than the maximum length in the direction parallel to the CF substrate of the photo spacers located in the edge region.

7. The display panel according to claim 6 , wherein the maximum length in the direction parallel to the CF substrate of the photo spacers located in the intermediate region gradually increases in a direction from the intermediate region to the edge region, and/or the maximum length in the direction parallel to the CF substrate of the photo spacers located in the edge region gradually increases in a direction from the intermediate region to the edge region.

8. A curved display device, comprising a display panel, wherein the display panel comprises a color filter, CF substrate, a thin film transistor, TFT substrate, a plurality of photo spacers, a liquid crystal layer and a sealing layer, the liquid crystal layer is disposed between the CF substrate and the TFT substrate, the plurality of photo spacers is disposed on a surface of the CF substrate facing the TFT substrate, the sealing layer is disposed between the CF substrate and the TFT substrate and surrounds an edge of the liquid crystal layer, the liquid crystal layer comprises an intermediate region and two edge regions located at two sides of the intermediate region, a stress generated from the photo spacers located in the intermediate region on the liquid crystals in the intermediate region is smaller than the stress generated from the photo spacers located in the edge regions on the liquid crystals in the edge regions, to keep the CF substrate and the TFT substrate at a constant gap;
wherein the photo spacers located in the two edge regions are symmetrical to the intermediate region, the photo spacers located in the intermediate region are symmetrical to a central axis of the CF substrate; and
wherein the density of the photo spacers located in the intermediate region gradually increases in a direction from the intermediate region to the edge region, and the density of the photo spacers located in the edge region gradually increases in a direction from the intermediate region to the edge region.

9. The curved display device according to claim 8 , wherein heights of the photo spacers in the intermediate region are smaller than the heights of the photo spacers in the edge region.

10. The curved display device according to claim 9 , wherein heights of the photo spacers located in the intermediate region gradually increase in a direction from the intermediate region to the edge region.

11. The curved display device according to claim 10 , wherein heights of the photo spacers located in the edge region gradually increase in a direction from the intermediate region to the edge region.

12. The curved display device according to claim 9 , wherein heights of the photo spacers located in the edge region gradually increase in a direction from the intermediate region to the edge region.

13. The curved display device according to claim 8 , wherein a maximum length in the direction parallel to the CF substrate of the photo spacers in the intermediate region is smaller than the maximum length in the direction parallel to the CF substrate of the photo spacers located in the edge region.

14. The curved display device according to claim 13 , wherein the maximum length in the direction parallel to the CF substrate of the photo spacers located in the intermediate region gradually increases in a direction from the intermediate region to the edge region, and/or the maximum length in the direction parallel to the CF substrate of the photo spacers located in the edge region gradually increases in a direction from the intermediate region to the edge region.

Assignees

• Wuhan China Star Optoelectronics Technology Co Ltd

Inventors

• Yin Bingkun
• Yin Wanting
• Tan Cong
• Shen Hung-Ming

Classifications

• G02F1/1368

  in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)} · CPC title

• G02F1/1339 Primary

  Gaskets; Spacers; Sealing of cells · CPC title

• G02F1/133514

  Colour filters · CPC title

• G02F1/13394 Primary

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

• G02F1/133305

  Flexible substrates, e.g. plastics, organic film · CPC title