Adhesive composition for polarizing plate, adhesive film for polarizing plate comprising the same, polarizing plate comprising the same and display device comprising the same

1. An adhesive composition for a polarizing plate, comprising:

(A) a polymerizable functional group-containing monomer capable of providing an anchor effect comprising (A2) an allyl-group-and-hydroxyl-group-containing (meth)acrylate monomer;

(B) an epoxy group-containing compound;

(C) optionally, a (meth)acrylic-based monomer;

(D) a photoacid generator; and

(E) at least one chosen from a photopolymerization initiator and a photosensitizer.

2. The adhesive composition of claim 1 , wherein the adhesive composition comprises (A2) the allyl-group-and-hydroxyl-group-containing (meth)acrylate monomer in an amount of about 20 parts by weight to about 70 parts by weight, (B) the epoxy group-containing compound in an amount of about 20 parts by weight to about 80 parts by weight, (C) the (meth)acrylic-based monomer in an amount of about 0 parts by weight to about 30 parts by weight, (D) the photoacid generator in an amount of about 1 part by weight to about 7 parts by weight, and (E) the at least one of the photopolymerization initiator and the photosensitizer in an amount of about 0.1 parts by weight to about 7 parts by weight, with respect to 100 parts by weight of (A)+(B)+(C).

3. The adhesive composition of claim 2 , wherein the (A2) allyl-group-and-hydroxyl-group-containing (meth)acrylate monomer is present in an amount of about 40 to about 60 parts by weight, with respect to 100 parts by weight of (A)+(B)+(C).

4. The adhesive composition of claim 2 , wherein the (A2) allyl-group-and-hydroxyl-group-containing (meth)acrylate monomer comprises a (meth)acrylic acid ester comprising a hydroxyl group, an alkyl group having 1 to 10 carbon atoms, and at least one selected from an allyl group, an allyloxy group and an allylthio group.

5. The adhesive composition of claim 1 , wherein (C) the (meth)acrylic-based monomer comprises a hydroxyl group-containing (meth)acryl monomer, an aromatic ring-containing (meth)acrylate monomer, an alicyclic-containing (meth)acrylate monomer or a heterocyclic ring-containing (meth)acrylate monomer.

6. The adhesive composition of claim 2 , wherein (C) the (meth)acrylic-based monomer comprises a (meth)acrylic acid ester having a substituted or unsubstituted aryloxy group having 6 to 10 carbon atoms and an alkyl group having 1 to 10 carbon atoms.

7. The adhesive composition of claim 1 , wherein (B) comprises at least one of a (meth)acrylate having one epoxy group and an epoxy resin having two epoxy groups.

8. An adhesive film for a polarizing plate formed from the adhesive composition according to claim 1 .

9. A polarizing plate comprising a protective film and a polarizer bonded together using the adhesive composition according to claim 1 .

10. The polarizing plate of claim 9 , wherein the protective film comprises an acrylic film, a cellulose-based film, or a cycloolefin polymer film.

11. A display device comprising the polarizing plate of claim 9 .