Display panel motherboard, display panel, manufacturing method thereof and display device

Patent metadata

Field	Value
Publication number	US-9664936-B2
Application number	US-201514786017-A
Country	US
Kind code	B2
Filing date	Mar 23, 2015
Priority date	Oct 30, 2014
Publication date	May 30, 2017
Grant date	May 30, 2017

Abstract

A display panel motherboard, a display panel, a manufacturing method thereof and a display device are provided. The display panel motherboard includes an array substrate provided with a metal lead layer and an protection layer and an opposing substrate provided with a black matrix layer; alignment rulers are respectively disposed in portions of the metal lead layer and the black matrix layer, corresponding to a sealant region; a protrusion is formed in a portion of the protection layer corresponding to the alignment ruler in the metal lead layer, in a thickness direction; and/or the opposing substrate further comprises a spacer layer, and a protrusion is formed in a portion of the spacer layer corresponding to the alignment ruler in the black matrix layer in the thickness direction.

First claim

What is claimed is:

1. A display panel motherboard, comprising an array substrate and an opposing substrate, wherein the array substrate comprises a metal lead layer and a protection layer, the opposing substrate comprises a black matrix layer;
alignment rulers are respectively disposed in portions of the metal lead layer and the black matrix layer corresponding to a sealant region,
wherein a protrusion is formed in a portion of the protection layer corresponding to the alignment ruler in the metal lead layer, in a thickness direction; and/or
the opposing substrate further comprises a spacer layer, and a protrusion is formed in a portion of the spacer layer corresponding to the alignment ruler in the black matrix layer in the thickness direction.

2. The display panel motherboard according to claim 1 , wherein a color filter layer is formed on alignment ruler portion of the black matrix layer in the sealant region and forms a part of the spacer layer.

3. The display panel motherboard according to claim 2 , wherein the color filter layer comprises one or more layers selected from a red filter layer, a green filter layer and a blue filter layer.

4. The display panel motherboard according to claim 1 , wherein a planarization layer is also formed above the black matrix layer of the opposing substrate.

5. The display panel motherboard according to claim 1 , wherein the protrusion of the spacer layer includes one protrusion or more than one protrusions, and a recess for accommodating the sealant is formed between more than one protrusions.

6. The display panel motherboard according to claim 1 , wherein the protection layer is directly connected with the sealant.

7. The display panel motherboard according to claim 1 , wherein the spacer layer is directly connected with the sealant.

8. The display panel motherboard according to claim 6 , wherein
a recessed portion is formed in the sealant at a position corresponding to the alignment ruler.

9. A display panel, which is obtained by cutting with sealant of the display panel motherboard according to claim 1 .

10. A display device, comprising the display panel according to claim 9 .

11. A method for manufacturing a display panel, comprising:
forming a metal lead layer on an array substrate, forming an alignment ruler in a portion of the metal lead layer corresponding to a sealant region, and forming a protection layer on the metal lead layer; and
forming a black matrix layer on an opposing substrate, and forming an alignment ruler in a portion of the black matrix layer corresponding to the sealant region,
wherein a protrusion is formed in a portion of the protection layer corresponding to the alignment ruler in the metal lead layer, in a cell-assembly direction; and/or
a spacer layer is formed above the black matrix layer, and a protrusion is formed in a portion of the spacer layer corresponding to the alignment ruler in the black matrix layer, in the cell-assembly direction.

12. The method for manufacturing the display panel according to claim 11 , wherein a planarization layer is formed on the black matrix layer; and the spacer layer is formed on the planarization layer.

13. The method for manufacturing the display panel according to claim 11 , further comprising:
dripping liquid crystal in a display region of the array substrate, coating a sealant at the sealant region of the opposing substrate, and cell-assembling the opposing substrate and the array substrate; and
performing alignment calibration and cutting according to the alignment rulers in the metal lead layer and the black matrix layer.

Assignees

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

Inventors

• Jiang ni
• Li Kun
• Xiang Xi
• Feng Yuanming

Classifications

• G02F1/133345

  Insulating layers (G02F1/1335, G02F1/1337, G02F1/135, G02F1/136 take precedence) · CPC title

• G02F1/1341

  Filling or closing of cells · CPC title

• G02F1/133351 Primary

  Manufacturing of individual cells out of a plurality of cells, e.g. by dicing · CPC title

• G02F1/13394

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

• G02F2001/133354

  Physics · mapped topic