| abstract |
[PROBLEMS] To have excellent reworkability and durability, no occurrence of luminance unevenness, and when an optical film is bonded to a thin liquid crystal cell as an adherend through an adhesive layer, A pressure-sensitive adhesive composition having good curling resistance without causing curling in a liquid crystal display panel and a pressure-sensitive adhesive layer using the same are provided. Further, the present invention provides a pressure-sensitive adhesive layer having excellent dent resistance when a load is applied. (A) an alkyl (meth) acrylate monomer having an alkyl group with C8 to C18 carbon atoms, (B) an alkyl (meth) acrylate monomer with an alkyl group having C1 to C5 carbon atoms, and (C) a hydroxyl group A copolymerizable vinyl monomer containing (D) and a copolymerizable vinyl monomer containing an aromatic group without copolymerizing a copolymerizable vinyl monomer containing a carboxyl group, and having a weight average molecular weight of It is an acrylic polymer of 1.5 to 3 million, and the crosslinking agent is a trifunctional or higher functional isocyanate compound. [Selection figure] None |