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-2017192297-A1
Application number	US-201615235500-A
Country	US
Kind code	A1
Filing date	Aug 12, 2016
Priority date	Jan 4, 2016
Publication date	Jul 6, 2017
Grant date	—

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 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 arranging the two curved substrates opposite to each other to form a cell subsequent to the dripping of the liquid crystals.

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 , further comprising:
flatting 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 the flatted display panel to the predetermined curvature subsequent to the panel treatment processes.

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

5 . 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 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; arranging the two curved substrates opposite to each other to form a cell subsequent to the dripping of the liquid crystals; flatting 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 the flatted display panel to the predetermined curvature subsequent to the panel treatment processes; and attaching a backlight module to the curved display panel.

6 . The method according to claim 5 , 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.

7 . The method according to claim 5 , wherein the two substrates comprise an array substrate and a color filter substrate.

8 . 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, and the liquid crystals have a twist angle matching with the predetermined curvature of the two curved substrates when the display panel is powered off.

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

10 . A display device manufactured by the method according to claim 5 , 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, and when the display panel is powered off, the liquid crystals have a twist angle matching with the predetermined curvature of the two curved substrates.

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

12 . A substrate curving device for use in the method according to claim 1 , comprising 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.

13 . The substrate curving device according to claim 12 , 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.

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

• G02F2001/13415

  Physics · mapped topic

• G02F2201/56

  Substrates having a particular shape, e.g. non-rectangular · CPC title

• G02F1/1341 Primary

  Filling or closing of cells · CPC title

• G02F1/133514 Primary

  Colour filters · CPC title

• G02F1/1333

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