Film cutting method and cutting device, composite film, backlight module and display device

Patent metadata

Field	Value
Publication number	US-11534934-B2
Application number	US-201916612487-A
Country	US
Kind code	B2
Filing date	Apr 9, 2019
Priority date	May 18, 2018
Publication date	Dec 27, 2022
Grant date	Dec 27, 2022

Abstract

The present disclosure provides a film cutting method, a film cutting device, a composite film, a backlight module and a display device. The film material cutting method includes: using a cutting tool provided with a viscous material to cut a composite film that includes at least two laminated optical films, with the viscous material on the cutting tool being transferred to a cutting end surface of the composite film during cutting; and, curing the viscous material on the cutting end surface.

First claim

What is claimed is:

1. A film cutting device, comprising:
a cutting mechanism including a cutting tool provided with viscous material;
a feeding mechanism configured to convey a composite film that includes at least two laminated optical films to the cutting mechanism;
a curing mechanism configured to, after the cutting tool cuts the composite film, cure the viscous material that is transferred from the cutting tool to a cutting end surface of the composite film; and
a spraying mechanism;
wherein the cutting mechanism further includes a cutting platform configured to support the composite film, and the cutting platform is below the cutting tool;
wherein there is a plurality of cutting tools, the plurality of cutting tools are spaced apart from each other and located above the cutting platform, and correspond to a position of the cutting platform, and the plurality of cutting tools are arrangeable along a length direction and a width direction of the composite film; and
wherein the spraying mechanism includes a plurality of nozzles corresponding to the plurality of the cutting tools, the plurality of nozzles are configured to spray the viscous material on the corresponding cutting tools, respectively.

2. The device according to claim 1 , wherein the viscous material is an ultraviolet curable glue;
the curing mechanism includes: an ultraviolet curing groove and a plurality of ultraviolet light sources; the plurality of ultraviolet light sources are disposed at an inner wall of the ultraviolet curing groove and spaced apart from each other.

3. The device according to claim 2 , wherein a shape of a cross section of the ultraviolet curing groove is a square shape.

4. The device according to claim 1 , further comprising: a transport mechanism located between the cutting mechanism and the curing mechanism.

5. The device according to claim 4 , wherein the transport mechanism includes two spaced conveying wheels and a conveying belt disposed around the two conveying wheels.

Assignees

• Hefei Boe Display Lighting Co
• Boe Technology Group Co Ltd

Inventors

• Wang Peina
• Zhu Zhi

Classifications

• B26D1/065 Primary

  for thin material, e.g. for sheets, strips or the like · CPC title

• B29C35/10

  for articles of indefinite length · CPC title

• B26D1/095 Primary

  for thin material, e.g. for sheets, strips or the like · CPC title

• B26D7/00

  Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting (cutters B26D1/00; arrangements for guiding hand cutting tools B26B29/06; punching tools or dies, cutting-out knives or dies B26F) · CPC title

• B29C2035/0827

  using UV radiation · CPC title