Patent ID: 9382456
Filing Date: 2016-07-05
CPC Classification: C08L,C09J,G02B

Claim Text:
1. An adhesive film for a polarizing plate formed from a composition comprising a (meth)acrylic copolymer and a cross-linking agent, the adhesive film having a peel strength ratio of about 6 or greater, the peel strength ratio being calculated according to Equation 1: wherein A is a peel strength in gf/25 mm of the adhesive film when peeled off of a glass substrate at an angle of 180° at 25° C. and at a tensile speed of 300 mm/min using a 30 kgf load cell; and B is a peel strength in gf/25 mm of the adhesive film when left at 85° C. for 60 minutes, and then peeled off of the glass substrate at an angle of 180° at 85° C. and at a tensile speed of 300 mm/min using a 30 kgf load cell, and wherein the peel strength A and the peel strength B are measured on a specimen in which a polarizing plate including the adhesive film is formed on a first surface of the glass substrate wherein the adhesive film has a peel strength A of about 200 gf/25 mm to about 500 gf/25 mm, and a peel strength B of about 1500 gf/25 mm to about 3000 gf/25 mm.