Method for manufacturing curved liquid crystal display panel

Patent metadata

Field	Value
Publication number	US-2016347045-A1
Application number	US-201514772389-A
Country	US
Kind code	A1
Filing date	May 15, 2015
Priority date	May 7, 2015
Publication date	Dec 1, 2016
Grant date	—

Abstract

The present invention provides a method for manufacturing a curved liquid crystal display panel, which comprises coating a sealing gum on a first or a second frame sealing region; filing liquid crystals between the two substrates and adhering the two substrates together; performing a first curing on partial sealing gum on a first set or a third set of frame bodies; bending the first set and the third set of frame bodies obtained after the first curing along the extension direction of the first set of frame bodies; performing a second curing on uncured sealing gum on the two bended substrates.

First claim

What is claimed is:

1 . A method for manufacturing a curved liquid crystal display panel, wherein:
the curved liquid crystal display panel comprises:
a first substrate having a first frame sealing region; the first substrate comprises a first set of frame bodies and a second set of frame bodies; the length of the first set of frame bodies is greater than that of the second set of frame bodies; a region formed by the first set of frame bodies and the second set of frame bodies is located outside a first projection region; the first frame sealing region is located inside the region formed by the first set of frame bodies and the second set of frame bodies; the first projection region is a projection of a display region on the first substrate; the first substrate further comprises a first setting region;
a second substrate opposite to the first substrate, having a second frame sealing region; the second substrate comprises a third set of frame bodies and a fourth set of frame bodies; the length of the third set of frame bodies is greater than that of the fourth set of frame bodies; a region formed by the third set of frame bodies and the fourth set of frame bodies is located outside a second projection region; the second frame sealing region is located inside the region formed by the third set of frame bodies and the fourth set of frame bodies; the second projection region is a projection of the display region on the second substrate; the second substrate further comprises a second setting region;
wherein initial structures of the first substrate and the second substrate are planar structures; the liquid crystal display panel with the planar structure has the display region; the first setting region is located outside the first projection region and is not overlapped with the first frame sealing region; the second setting region is located outside the second projection region and is not overlapped with the second frame sealing region; the method for manufacturing the curved liquid crystal display panel comprises: coating a sealing gum on partial region of the first frame sealing region and the first setting region; or coating the sealing gum on partial region of the second frame sealing region and the second setting region; filing liquid crystals between the first substrate and the second substrate; performing a vacuum lamination on the first substrate and the second substrate; performing a first curing on partial sealing gum on the first set of frame bodies or partial sealing gum on the third set of frame bodies such that the first substrate and the second substrate is adhered to each other in a bending process; bending the first set of frame bodies obtained after the first curing along an extension direction of the first set of frame bodies or along the extension direction of the third set of frame bodies; and bending the third set of frame bodies obtained after the first curing along the extension direction of the first set of frame bodies or along the extension direction of the third set of frame bodies; and performing a second curing on uncured sealing gum on the bended first substrate or uncured sealing gum on the bended second substrate so as to form the curved liquid crystal display panel; wherein the step of performing the first curing on said partial sealing gum on the first set of frame bodies or said partial sealing gum on the third set of frame bodies comprises: utilizing ultraviolet rays to irradiate said partial sealing gum on the first set of frame bodies or said partial sealing gum on the third set of frame bodies such that an initial cured sealing gum having a predetermined length is formed between the first set of frame bodies and the third set of frame bodies.

2 . The method for manufacturing the curved liquid crystal display panel according to claim 1 , wherein the first setting region is located between the first projection region and the first frame sealing region; and the second setting region is located between the second projection region and the second frame sealing region.

3 . The method for manufacturing the curved liquid crystal display panel according to claim 1 , wherein the first setting region is located outside the first frame sealing region; and the second setting region is located outside the second frame sealing region.

4 . The method for manufacturing the curved liquid crystal display panel according to claim 1 , wherein:
the step of the first curing comprises performing the curing only on the sealing gum on the first setting region or the sealing gum on the second setting region; the step of the second curing comprises performing the curing on the sealing gum on the bended first frame sealing region or the sealing gum on the bended second frame sealing region.

5 . The method for manufacturing the curved liquid crystal display panel according to claim 1 , wherein:
the step of the first curing comprises performing the curing on the sealing gum on the first setting region and partial sealing gum on two strips of long edges of the first frame sealing region or performing the curing on the sealing gum on the second setting region and partial sealing gum on two strips of long edges of the second frame sealing region such that an integrated cured sealing gum is formed between the first substrate and the second substrate; the integrated cured sealing gum comprises a main portion and a combined portion connected to each other; the step of the second curing comprises performing the curing on uncured sealing gum on the bended first frame sealing region or uncured sealing gum on the bended second frame sealing region.

6 . The method for manufacturing the curved liquid crystal display panel according to claim 5 , wherein the main portion is formed by curing said partial sealing gum on the two strips of long edges of the first frame sealing region or by curing said partial sealing gum on the two strips of long edges of the second frame sealing region.

7 . The method for manufacturing the curved liquid crystal display panel according to claim 1 , wherein the curved liquid crystal display panel has a predetermined radius of curvature and a predetermined bending angle, and the predetermined length of the initial cured sealing gum is obtained according to the predetermined radius of curvature and the predetermined bending angle.

8 . A method for manufacturing a curved liquid crystal display panel, wherein:
the curved liquid crystal display panel comprises:
a first substrate having a first frame sealing region; the first substrate comprises a first set of frame bodies and a second set of frame bodies; the length of the first set of frame bodies is greater than that of the second set of frame bodies; a region formed by the first set of frame bodies and the second set of frame bodies is located outside a first projection region; the first frame sealing region is located inside the region formed by the first set of frame bodies and the second set of frame bodies; the first projection region is a projection of a display region on the first substrate;
a second substrate opposite to the first substrate, having a second frame sealing region; the second substrate comprises a third set of frame bodies and a fourth set of frame bodies; the length of the third set of frame bodies is greater than that of the fourth set of frame bodies; a region formed by the third set of frame bodies and the fourth set of frame bodies is located outside a second projection region; the second frame sealing region is located inside the region formed by the third set of frame bodies and the fourth set of frame bodies; the second projection region is a projection of the display region on the second substrate;
wherein initial structures of th

Assignees

• Wuhan China Star Optoelectronics Technology Co Ltd

Inventors

• Sun Haiyan
• Li Dejiun
• Yang Tsungying
• Liu Dandan

Classifications

• G02F1/1333

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

• B32B2309/12

  Pressure · CPC title

• B32B38/1866

  conforming the layers or laminate to a convex or concave profile · CPC title

• B32B37/14

  characterised by the properties of the layers · CPC title

• B32B37/1018 Primary

  using only vacuum · CPC title