Display panel and method for manufacturing the same, display device and method for manufacturing the same, and substrate curving device

Patent metadata

Field	Value
Publication number	US-10114253-B2
Application number	US-201615235500-A
Country	US
Kind code	B2
Filing date	Aug 12, 2016
Priority date	Jan 4, 2016
Publication date	Oct 30, 2018
Grant date	Oct 30, 2018

Abstract

The present disclosure provides a display panel, a display device, their manufacturing methods, and a substrate curving device. The method for manufacturing the display panel includes steps of: providing two substrates for forming the display panel; arranging the two substrates opposite to each other, curving the two substrates at a predetermined curvature, and directly dripping liquid crystals into a space between the two curved substrates, so as to make the liquid crystals to have a twist angle matching with the predetermined curvature of the two curved substrates; and after the dripping, arranging the two substrates opposite to each other to form a cell. According to the present disclosure, the liquid crystals are dripped into between the two curved substrates, the then the two curved substrates are arranged opposite to each other to form the display panel.

First claim

What is claimed is:

1. A method for manufacturing a display panel, comprising steps of:
providing two substrates for forming the display panel;
arranging the two substrates opposite to each other, curving, by a substrate curving device, the two substrates at a predetermined curvature, and directly dripping liquid crystals into a space between the two curved substrates;
arranging the two curved substrates opposite to each other to form a cell subsequent to the dripping of the liquid crystals;
flatting, by the substrate curving device, the resultant display panel formed by arranging the two curved substrates opposite to each other to form a cell, and performing panel treatment processes to the flatted display panel, wherein the panel treatment processes comprise a testing of the flatted display panel; and
curving, by the substrate curving device, the flatted display panel to the predetermined curvature subsequent to the panel treatment processes;
wherein the substrate curving device comprises: a front-surface constraining plate configured to constrain a front surface of a substrate and lateral-surface constraining pins configured to constrain lateral surfaces of the substrate, wherein the front-surface constraining plate comprises a curved surface which has a predetermined curvature and which is in contact with the front surface of the substrate so as to fix the substrate thereon;
wherein the curved surface of the front-surface constraining plate is provided with a plurality of vacuum adsorption holes, a plurality of hollow rods in communication with the vacuum adsorption holes is arranged on the front-surface constraining plate, and each hollow rod is capable of being changed between a vacuumized state where the substrate is constrained onto the front-surface constraining plate so as to curve the substrate at the predetermined curvature, and an inflated state where the substrate is separated from the front-surface constraining plate so as to enable the substrate to be in a flat state.

2. The method according to claim 1 , wherein the two curved substrates are of the predetermined curvature when the two curved substrates are arranged opposite to each other to form a cell.

3. The method according to claim 1 , wherein the two substrates comprise an array substrate and a color filter substrate.

4. A method for manufacturing a display device, comprising steps of:
providing two substrates for forming a display panel;
arranging the two substrates opposite to each other, curving, by a substrate curving device, the two substrates at a predetermined curvature, and directly dripping liquid crystals into a space between the two curved substrates;
arranging the two curved substrates opposite to each other to form a cell subsequent to the dripping of the liquid crystals;
flatting, by the substrate curving device, the resultant display panel formed by arranging the two curved substrates opposite to each other to form a cell, and performing panel treatment processes to the flatted display panel, wherein the panel treatment processes comprise a testing of the flatted display panel;
curving, by the substrate curving device, the flatted display panel to the predetermined curvature subsequent to the panel treatment processes; and
attaching a backlight module to the curved display panel;
wherein the substrate curving device comprises: a front-surface constraining plate configured to constrain a front surface of a substrate and lateral-surface constraining pins configured to constrain lateral surfaces of the substrate, wherein the front-surface constraining plate comprises a curved surface which has a predetermined curvature and which is in contact with the front surface of the substrate so as to fix the substrate thereon;
wherein the curved surface of the front-surface constraining plate is provided with a plurality of vacuum adsorption holes, a plurality of hollow rods in communication with the vacuum adsorption holes is arranged on the front-surface constraining plate, and each hollow rod is capable of being changed between a vacuumized state where the substrate is constrained onto the front-surface constraining plate so as to curve the substrate at the predetermined curvature, and an inflated state where the substrate is separated from the front-surface constraining plate so as to enable the substrate to be in a flat state.

5. The method according to claim 4 , wherein the two curved substrates are of the predetermined curvature when the two curved substrates are arranged opposite to each other to form a cell.

6. The method according to claim 4 , wherein the two substrates comprise an array substrate and a color filter substrate.

7. A display panel manufactured by the method according to claim 1 , comprising two substrates arranged opposite to each other to form a cell, and liquid crystals arranged between the two substrates, wherein the two substrates are curved at a predetermined curvature.

8. The display panel according to claim 7 , wherein the two substrates comprise an array substrate and a color filter substrate.

9. A display device manufactured by the method according to claim 4 , comprising a display panel and a backlight module attached to the display panel, wherein the display panel comprises two substrates arranged opposite to each other to form a cell, and liquid crystals arranged between the two substrates, the two substrates are curved at a predetermined curvature.

10. The display device according to claim 9 , wherein the two substrates comprise an array substrate and a color filter substrate.

Assignees

• Boe Technology Group Co Ltd
• Hefei Boe Optoelectronics Tech

Inventors

• Kwon Youngman
• Park Kuhyun
• Lee Yunbok
• Sun Dongling
• Zhu Zhengwei
• Zhang Wenhao
• Wang Sheng

Classifications

• G02F1/1341 Primary

  Filling or closing of cells · CPC title

• G02F2001/13415

  Physics · mapped topic

• G02F1/1333

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

• G02F1/1303 Primary

  Apparatus specially adapted to the manufacture of LCDs · CPC title

• G02F1/13415

  Drop filling process · CPC title