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:
Jun. 06, 2017
Filed:
Nov. 27, 2009
Byoung-kue Chun, Daejeon, KR;
Chang-hun Han, Daejeon, KR;
Byoung-il Kang, Daejeon, KR;
Su-kyung Kim, Daejeon, KR;
Da-eun Sung, Daejeon, KR;
Byoung-Kue Chun, Daejeon, KR;
Chang-Hun Han, Daejeon, KR;
Byoung-Il Kang, Daejeon, KR;
Su-Kyung Kim, Daejeon, KR;
Da-Eun Sung, Daejeon, KR;
LG CHEM, LTD., Seoul, KR;
Abstract
The present invention relates to a retardation film that comprises a blend resin of 1) an acryl-based copolymer resin that comprises an alkyl methacrylate-based monomer and a cycloalkyl methacrylate-based monomer, and 2) a resin that comprises an aromatic ring or aliphatic ring in a polymer main chain, a method for manufacturing the retardation film, and a liquid crystal display device that comprises the retardation film. The retardation film according to the present invention has excellent heat resistance, optical transparency, mechanical strength, and durability.