A method of manufacturing a polarizer, the method including: forming a metal layer on a substrate; forming a hard mask on the metal layer; forming an adhesion layer on a portion of the hard mask; forming a polymer layer on the hard mask and the adhesion layer; pressing a mold on the polymer layer to form a lattice pattern in association with the polymer layer; removing the mold and a portion of the lattice pattern; and patterning the adhesion layer, the hard mask, and the metal layer using a remaining portion of the lattice pattern as a mask.