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:
May. 26, 2015
Filed:
May. 21, 2013
Lg Chem, Ltd., Seoul, KR;
Hee-Jung Kim, Daejeon, KR;
Dong-Ryul Kim, Daejeon, KR;
Ho-Jun Lee, Daejeon, KR;
Sang-Uk Ryu, Daejeon, KR;
Hyo-Sun Lee, Daejeon, KR;
Boong-Goon Jeong, Daejeon, KR;
Dae-Woo Nam, Daejeon, KR;
Ju-Eun Cha, Daegu, KR;
LG Chem, Ltd., Seoul, KR;
IUCF-HYU (Industry-University Cooperation Foundation Hanyang University, Seoul, KR;
Abstract
Disclosed is a negative C-type retardation compensator for a liquid crystal display. The negative C-type retardation compensator for the liquid crystal display includes polyarlate having a thio group or a sulfur oxide group in a polymer main chain thereof. Accordingly, the retardation compensator has an absolute value of negative retardation that is larger in a thickness direction that a retardation compensator which includes polyarylate having no thio group or sulfur oxide group in a polymer main chain thereof even though the retardation compensator having the thio group or sulfur oxide group and the retardation compensator having no thio group or sulfur oxide group are the same as each other in thickness. Thereby, the negative C-type retardation compensator for liquid crystal displays is capable of being desirably applied to the liquid crystal displays.