The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 07, 2020
Filed:
Jun. 21, 2017
Lg Chem, Ltd., Seoul, KR;
Jeong Hwan Lee, Daejeon, KR;
Yun Seok Choe, Daejeon, KR;
Joo Sang Kim, Daejeon, KR;
Do Won Yang, Daejeon, KR;
Yong Gou Lee, Daejeon, KR;
Bong Su Jeung, Daejeon, KR;
Jea Han Ryoo, Daejeon, KR;
LG CHEM, LTD., Seoul, KR;
Abstract
Provided is a manufacturing method of an optical film, which manufactures an optical film in which at least a first film and a second film are stacked, the method including: pressing the first film and the second film with the optical film by passing both the first film and the second film between a pair of pressing rolls; forming a slit line in a width direction of the optical film by cutting the second film without cutting the first film at a rear end of a connection portion when the connection portion is included, to which a unit film is connected by a connection member between the first film and the second film which are pressed in the pressing; and conveying the optical film by passing the optical film with the slit line in the slit forming between a pair of conveying rolls.