An adhesive film, an adhesive composition for the same, and a display member including the same are disclosed. The adhesive film includes a cured product of an adhesive composition, which includes a (meth)acrylic copolymer formed from a monomer mixture including (a1) an alkyl (meth)acrylate having a C1 to C17 alkyl group and (a2) an alkyl (meth)acrylate having an alkyl group having 18 or more carbon atoms. The adhesive film has a ratio (B/A) of 90° peel strength (B) after aging the adhesive film at 25° C. for 30 minutes and leaving the adhesive film at 90° C. for 40 seconds to 90° peel strength (A) after aging the adhesive film at 25° C. for 30 minutes of about 0.1 or less.
本发明公开了一种粘合膜、用于该粘合膜的粘合剂组合物以及包括该粘合膜的显示器件。胶膜包括胶粘剂组合物的固化产物,该组合物包括由单体混合物形成的(甲基)
丙烯酸共聚物,该单体混合物包括(a1)具有 C1 至 C17 烷基的烷基(甲基)
丙烯酸酯和(a2)具有 18 个或更多碳原子的烷基的烷基(甲基)
丙烯酸酯。胶膜在 25 摄氏度下老化 30 分钟并在 90 摄氏度下放置 40 秒后的 90° 剥离强度 (B) 与在 25 摄氏度下老化 30 分钟后的 90° 剥离强度 (A) 之比 (B/A) 约为 0.1 或更小。