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, 2015
Filed:
Apr. 23, 2009
Ki Seok Jang, Daegu, KR;
Min Soo Park, Daejeon, KR;
IN Cheon Han, Seoul, KR;
Woo Ha Kim, Daejeon, KR;
Min Jin Ko, Daejeon, KR;
Ki Youl Lee, Daejeon, KR;
Ki Seok Jang, Daegu, KR;
Min Soo Park, Daejeon, KR;
In Cheon Han, Seoul, KR;
Woo Ha Kim, Daejeon, KR;
Min Jin Ko, Daejeon, KR;
Ki Youl Lee, Daejeon, KR;
LG Chem, Ltd., Seoul, KR;
Abstract
The present invention relates to a pressure-sensitive adhesive composition, and a polarizer and a liquid crystal display (LCD) device using the pressure-sensitive adhesive composition, and more particularly, to a pressure-sensitive adhesive composition including (A) an acrylic copolymer and (B) a liquid optically-anisotropic compound having a mesogen core in its structure. The liquid optically-anisotropic compound having a mesogen core in its structure according to the present invention has superior solubility and compatibility with pressure-sensitive adhesive resin, and thus the pressure-sensitive adhesive composition including the liquid optically-anisotropic compound can relax stress caused by shrinkage of the polarizer and effectively compensate negative birefringence. Therefore, the polarizer and the LCD device using the pressure-sensitive adhesive composition can prevent light leakage originating from stress concentration in spite of long-term use.