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:
Dec. 11, 2012
Filed:
Jul. 10, 2007
No-ma Kim, Daejeon, KR;
In-cheon Han, Seoul, KR;
Jeong-min Ha, Daejeon, KR;
An-na Lee, Daejeon-si, KR;
Seung-joon Park, Daejeon-si, KR;
Suk-ky Chang, Daejeon-si, KR;
No-ma Kim, Daejeon, KR;
In-Cheon Han, Seoul, KR;
Jeong-Min Ha, Daejeon, KR;
An-Na Lee, Daejeon-si, KR;
Seung-Joon Park, Daejeon-si, KR;
Suk-Ky Chang, Daejeon-si, KR;
LG Chem, Ltd., Seoul, KR;
Abstract
The present invention relates to an acrylic pressure-sensitive adhesive composition which comprises a (meth)acrylic copolymer comprising 70 to 95 parts by weight of an alkyl(meth)acrylic acid ester monomer, in which alkyl has 2 to 14 carbon atoms, and 5 to 30 parts by weight of a (meth)acrylic acid ester monomer containing a copolymerizable aromatic group, wherein the composition has a gel fraction of 10 to 55% and a swelling ratio of 30 to 110, and a sol (uncross-linked polymer) eluted therein with a solvent has a weight average molecular weight of 600,000 or more; a polarizing plate comprising the composition; and a liquid crystal display device comprising the same. The composition according to the present invention provides workability such as an excellent durability and re-workability, and has an effect of improving a light leakage phenomenon, since the size of birefringence occurred under stress is very small.