Pressure-sensitive adhesive composition

A pressure-sensitive adhesive composition, comprising:

• a block copolymer including a first block having a glass transition temperature of 50° C. or more and including a polymerization unit of 80 to 99.9 parts by weight of a (meth) acrylic acid ester monomer and a polymerization unit of 0.1 to 20 parts by weight of a monomer providing a crosslinkable functional group, and a second block having a glass transition temperature of −10° C. or less and including a monomer providing a crosslinkable functional group;
• and
• a multifunctional crosslinking agent,
• wherein the monomers providing a crosslinkable functional group included in the first and second blocks are represented by Formula 1, and the number of carbon atoms included in alkylene groups of A and B in Formula 1 of the monomer included in the second block is larger than that of the monomer included in the first block:
• where Q is hydrogen or an alkyl group having 1 to 4 carbon atoms, A and B may be each independently a linear alkylene group, and n is a number of 0 to 10,
• wherein the block copolymer includes 500 to 1,500 parts by weight of the second block with respect to 100 parts by weight of the first block.