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:
Jan. 25, 2011
Filed:
May. 04, 2009
Jun-geun Um, Daejeon Metropolitan, KR;
Min-hee Lee, Daejeon Metropolitan, KR;
Nam-jeong Lee, Daejeon Metropolitan, KR;
Jong-hun Lee, Daejeon Metropolitan, KR;
Dong-ryul Kim, Daejeon Metropolitan, KR;
Sae-han Cho, Daejeon Metropolitan, KR;
Jun-Geun Um, Daejeon Metropolitan, KR;
Min-Hee Lee, Daejeon Metropolitan, KR;
Nam-Jeong Lee, Daejeon Metropolitan, KR;
Jong-Hun Lee, Daejeon Metropolitan, KR;
Dong-Ryul Kim, Daejeon Metropolitan, KR;
Sae-Han Cho, Daejeon Metropolitan, KR;
LG Chem, Ltd., , KR;
Abstract
The present invention relates to an optical film comprising an aromatic based unit having chain having the hydroxy group containing portion and aromatic moiety; and a styrene-based unit comprising one or more styrene-based derivatives, and has absolute values of in-plane retardation (R) and thickness retardation (R) of 10 nm or less regardless of stretching, and a polarizing plate and an information technology apparatus including the same.