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:
Mar. 24, 2009
Filed:
Feb. 06, 2004
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;
In-seok Hwang, Daejeon, KR;
Beom-seok Kim, 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;
In-Seok Hwang, Daejeon, KR;
Beom-Seok Kim, Daejeon, KR;
LG Chem, Ltd., , KR;
Abstract
The present invention relates to a unified polarizing plate, which employs, as a protection layer of a polarizing film, a transparent film that can simultaneously function as a negative C-plate and transparent protection layer of a polarizing film and has negative refractive index toward thickness direction, thereby simultaneously performing functions as a negative C-plate for optical compensation and as a polarizing plate, and a method for preparing the same. The unified polarizing plate has superior durability at high temperature and high humidity compared to those employing TAC as a protection layer, and improves wide view angle of liquid crystal display having positive refractive index toward thickness direction, when the liquid crystal display device is ON or OFF.