System for manufacturing display unit

Patent metadata

Field	Value
Publication number	US-10800149-B2
Application number	US-201715605357-A
Country	US
Kind code	B2
Filing date	May 25, 2017
Priority date	May 31, 2016
Publication date	Oct 13, 2020
Grant date	Oct 13, 2020

Abstract

Disclosed is a system for manufacturing a display unit, including: a carrying unit configured to carry an optical film; a cutting unit configured to form a slit line on the optical film from a side opposite to the release film by a predetermined depth, in which the release film is not cut; a peeling unit configured to peel the polarizing film from the release film; and an attaching unit configured to attach the polarizing film peeled from the release film to a panel, in which the carrying unit includes a carrying direction changing unit, which changes a direction in which the optical film is carried so that the optical film carried along a first straight section is carried along a second straight section crossing the first straight section, and when the carrying of the optical film is stopped, the slit line formed on the optical film is positioned in the first straight section or the second straight section among the first straight section, the second straight section, and a curved section positioned between the first straight section and the second straight section.

First claim

What is claimed is:

1. A system for manufacturing a display unit, comprising:
a carrying unit configured to carry an optical film including a polarizing film having an adhesive layer and a release film attached to the adhesive layer so as to be peeled off;
a cutting unit configured to form a slit line on the optical film from a side opposite to the release film by a predetermined depth, in which the release film is not cut;
a peeling unit configured to peel the polarizing film from the release film; and
an attaching unit configured to attach the polarizing film peeled from the release film to a panel,
wherein the carrying unit includes a carrying direction changing unit, which changes a direction in which the optical film is carried so that the optical film carried along a first straight section is carried along a second straight section crossing the first straight section,
wherein the carrying direction changing unit includes a peeling preventing unit, which prevents the polarizing film from being peeled from the release film,
wherein the system for manufacturing a display unit further includes a position changing unit, which changes a position of the carrying direction changing unit so that the slit line formed on the optical film is positioned in the first straight section or the second straight section when the carrying the optical film is stopped in a state where the slit line is positioned in a curved section positioned between the first straight section and the second straight section among the first straight section, the second straight section, and the curved section,
wherein the position changing unit shifts the carrying direction changing unit in the horizontal direction with respect to the ground and changes the direction in which the optical film is carried along the second straight section to the diagonal direction with respect to the ground, and
wherein the peeling unit includes a knife edge portion formed at a leading end of the peeling unit, and a curvature radius of the knife edge portion is 0.3 to 5.0 mm.

2. The system of claim 1 , wherein the carrying direction changing unit changes the carrying direction of the optical film by 90° or more.

3. A system for manufacturing a display unit, comprising:
a carrying unit configured to carry along a carrying line in a bent or curved shape an optical film including a polarizing film having an adhesive layer and a release film attached to the adhesive layer so as to be peeled off;
a cutting unit configured to form a slit line on the optical film from a side opposite to the release film by a predetermined depth, in which the release film is not cut;
a peeling preventing unit, which is formed in a section in which the carrying line is bent or curved, and prevents the polarizing film from being peeled from the release film,
a peeling unit configured to peel the polarizing film from the release film; and
an attaching unit configured to attach the polarizing film peeled from the release film to a panel,
wherein the system for manufacturing a display unit further includes a position changing unit, when the carrying of the optical film is stopped in a state where the slit line formed on the optical film is positioned in a section in which the carrying line is bent or curved, the position changing unit changes a position of the section in which the carrying line is bent or curved, so that the slit line is not positioned in the above-said section,
wherein the position changing unit shifts the carrying direction changing unit in the horizontal direction with respect to the ground and changes the direction in which the optical film is carried along the second straight section to the diagonal direction with respect to the ground, and
wherein the peeling unit includes a knife edge portion formed at a leading end of the peeling unit, and a curvature radius of the knife edge portion is 0.3 to 5.0 mm.

4. The system of claim 3 , wherein in a section, in which the carrying line is bent or curved, the carrying direction of the optical film is changed by 90° or more.

Assignees

• Lg Chemical Ltd

Inventors

• Lee Beom Seok
• Lee Suk Jae
• Park Kyung Hyeok
• Park San
• Choi Hang Suk
• Jang Eung Jin
• Jeung Bong Su
• Ryoo Jea Han

Classifications

• B32B2038/045

  Slitting · CPC title

• G02F1/1303 Primary

  Apparatus specially adapted to the manufacture of LCDs · CPC title

• G02F1/133528

  Polarisers · CPC title

• B32B41/00

  Arrangements for controlling or monitoring lamination processes; Safety arrangements · CPC title

• G02F2202/28

  Adhesive materials or arrangements · CPC title