Curved display panel, manufacturing method thereof and display device

Patent metadata

Field	Value
Publication number	US-11226513-B2
Application number	US-201916641939-A
Country	US
Kind code	B2
Filing date	Jul 24, 2019
Priority date	Sep 19, 2018
Publication date	Jan 18, 2022
Grant date	Jan 18, 2022

Abstract

The present disclosure relates to the field of display technologies and proposes a curved display panel. The curved display panel includes a first substrate provided with a first groove in a non-display area of the first substrate; a second substrate provided with a second groove in a non-display area of the second substrate, the second groove being disposed corresponding to the first groove; and a fixing spacer disposed between the first substrate and the second substrate, and having a first end located in the first groove and a second end located in the second groove.

First claim

What is claimed is:

1. A curved display panel, comprising:
a first substrate;
a second substrate disposed corresponding to the first substrate; and
a black matrix located on the second substrate and comprising a pixel-defining structure and compensation structures, each of the compensation structures having a first width along a first direction and a second width along a second direction perpendicular to the first direction;
wherein the first width is positively correlated to a distance from the compensation structure to a curving center axis of the curved display panel, and an extending direction of the curving center axis is parallel to the second direction, wherein:
a first groove is disposed in a non-display area of the first substrate;
a second groove is disposed in a non-display area of the second substrate, the second groove being disposed corresponding to the first groove;
a fixing spacer is disposed between the first substrate and the second substrate, the fixing spacer having a first end located in the first groove and a second end located in the second groove;
the first groove is disposed in a planarization layer of the first substrate, and comprises:
two first sub-grooves, each being arranged in a cross shape, a connecting line of central points of the two first sub-grooves and a fixing center axis of the first substrate being arranged in a collinear way, and the center axis of the first substrate being parallel to the second direction; and
four second sub-grooves disposed at four corner parts of the planarization layer respectively, each of the four second sub-grooves comprising a second horizontal sub-groove parallel to a horizontal side of the planarization layer and a second longitudinal sub-groove parallel to a longitudinal side of the planarization layer, and one end of the second horizontal sub-groove close to the longitudinal side of the planarization layer being communicated with one end of the second longitudinal sub-groove close to the horizontal side of the planarization layer; and

the second groove is disposed in a coating protection layer of the second substrate and extends onto the black matrix, and the second groove comprises:
two third sub-grooves, each being arranged in the cross shape, a connecting line of central points of the two third sub-grooves and a fixing center axis of the second substrate being arranged in the collinear way, and the center axis of the second substrate being parallel to the second direction; and
four fourth sub-grooves disposed at four corner parts of the coating protection layer respectively, each of the four fourth sub-grooves comprising a fourth horizontal sub-groove parallel to a horizontal side of the coating protection layer and a fourth longitudinal sub-groove parallel to a longitudinal side of the coating protection layer, and one end of the fourth horizontal sub-groove close to the longitudinal side of the coating protection layer being communicated with one end of the fourth longitudinal sub-groove close to the horizontal side of the coating protection layer.

2. The curved display panel according to claim 1 , wherein the first widths of the compensation structures have a same distance from the curving center axis along the first direction are the same.

3. The curved display panel according to claim 1 , wherein the second width of each of the compensation structures is substantially the same.

4. The curved display panel according to claim 1 , further comprising: a sealant layer adhered between the fixing spacer and the first substrate, and between the fixing spacer and the second substrate, the sealant layer being a rigid sealant layer.

5. The curved display panel according to claim 1 , wherein the curved display panel is implemented in a display device.

6. The curved display panel according to claim 5 , wherein the first widths of the compensation structures have a same distance from the curving center axis along the first direction that are the same.

7. The curved display panel according to claim 5 , wherein the second width of each of the compensation structures is substantially the same.

8. The curved display panel according to claim 1 , wherein the first substrate is an array substrate and the planarization layer is a layer in a non-display area of the array substrate closest to the second substrate.

9. The curved display panel according to claim 1 , wherein:
the second substrate is a color filter substrate;
the coating protection layer is a layer in a non-display area of the color filter substrate closest to the first substrate; and
the black matrix of the second substrate is disposed adjacent to the coating protection layer in the non-display area of the color filter substrate.

10. A method for manufacturing a curved display panel, comprising:
providing the curved display panel, the curved display panel comprising a first substrate and a second substrate, the second substrate comprising a black matrix;
obtaining a target value of the black matrix, wherein obtaining the target value of the black matrix comprises:
fixing a test display panel along a center axis parallel to a display surface of the test display panel, and curving and fixing both sides of the test display panel parallel to the center axis;
obtaining a pixel shift image of the test display panel after the test display panel is curved;
simulating pixel shift information according to the pixel shift image;
obtaining a cross-color distribution of the test display panel according to simulated pixel shift information;
obtaining a black matrix compensation value according to the cross-color distribution; and
obtaining the target value according to the black matrix compensation value;

forming the black matrix according to the target value;
forming a first groove in a non-display area of the first substrate;
forming a second groove in a non-display area of the second substrate, the second groove being disposed corresponding to the first groove; and
forming a fixing spacer having a first end located in the first groove and a second end located in the second groove.

11. The method for manufacturing the curved display panel according to claim 10 , further comprising: adhering the fixing spacer to the first substrate and the second substrate by using a sealant.

12. The method for manufacturing the curved display panel according to claim 11 , wherein the sealant is a rigid sealant.

13. A method for manufacturing a curved display panel, comprising:
providing a first substrate;
providing a second substrate, the second substrate being disposed corresponding to the first substrate; and
forming a black matrix on the second substrate, the black matrix comprising a pixel-defining structure and compensation structures, each of the compensation structures having a first width along a first direction and a second width along a second direction perpendicular to the first direction;
wherein the first width is positively correlated to a distance from the compensation structure to a curving center axis of the curved display panel, and an extending direction of the curving center axis is parallel to the second direction,
wherein the first width of the compensation structure is obtained by:
fixing a test display panel along a center axis parallel to a display surface of the test display panel, and curving and fixing both sides of the test display panel parallel to the center axis;
obtaining a pixel shift image of the test display panel after the test display panel is curved;
simulating pixel shift information according to the pixel shift image;
obtaining a cross-color distribution of the test display panel a

Assignees

• Ordos Yuansheng Optoelectronics Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Wang Huilian
• Wang Xuelu
• Wang Yan
• Chen Yanqing

Classifications

• G02F1/13394

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

• G02F1/133512 Primary

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

• G02F1/133388

  with constructional differences between the display region and the peripheral region · CPC title

• G02F1/1333

  Constructional arrangements; {Manufacturing methods}(G02F1/135, G02F1/136 take precedence) · CPC title

• G02F1/1339

  Gaskets; Spacers; Sealing of cells · CPC title