provided is a method of fabricating a wire grid polarizer , the method comprising an organic light - emitting display panel . according to an aspect of the present disclosure , there is provided a method comprising sequentially stacking a conductive wire pattern layer , a first neutral layer , a guide pattern layer and a second neutral layer on a substrate , forming etch - stop patterns on the second neutral layer , forming second neutral layer patterns and guide patterns by patterning the second neutral layer and the guide pattern layer using the etch - stop patterns , coating a block copolymer of two types of monomer blocks having different etch rates on the first neutral layer and the second neutral layer patterns , aligning the block copolymer , removing one type of monomer blocks from the aligned block copolymer , and patterning the conductive wire pattern layer using the remaining monomer blocks , the second neutral layer patterns , and the guide patterns .