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. 28, 2009
Filed:
Nov. 19, 2003
Won-kook Kim, Daejeon, KR;
Sung-ho Chun, Daejeon, KR;
Sung-cheol Yoon, Daejeon, KR;
Tae-sun Lim, Daejeon, KR;
Heon Kim, Daejeon, KR;
Jung-min Lee, Daejeon, KR;
Jeong-su Yu, Daejeon, KR;
Won-Kook Kim, Daejeon, KR;
Sung-Ho Chun, Daejeon, KR;
Sung-Cheol Yoon, Daejeon, KR;
Tae-Sun Lim, Daejeon, KR;
Heon Kim, Daejeon, KR;
Jung-Min Lee, Daejeon, KR;
Jeong-Su Yu, Daejeon, KR;
LG Chem, Ltd., , KR;
Abstract
The present invention provides a negative C-plate type optical anisotropic film having negative birefringence along the thickness direction. In particular, the present invention provides a film comprising cycloolefin addition polymer, which is prepared by addition polymerizing norbornene-based monomers, a method for preparing the same, and a liquid crystal display comprising the same. The film of the present invention can be used for optical compensation films of a variety of LCD (liquid crystal display) modes because the refractive index alone the thickness direction can be controlled by the kind and amount of functional groups introduced to the cycloolefin addition polymer.