Patent ID: 7929079

Claim:
A method of manufacturing a polarizer, the method comprising: forming a conductive thin film layer on a first surface of a substrate; partially removing the conductive thin film layer corresponding to processing lines, wherein the removing the conductive thin film layer comprises irradiating treatment laser beams along the processing lines: forming a plurality of groove lines on a first portion of the substrate from which the conductive thin film is removed; and forming a plurality of striped lines on a second portion of the substrate on which the conductive thin film remains between the groove lines, wherein the removing the conductive thin film layer further comprises: irradiating the treatment laser beams along first processing lines of the processing, lines and forming first groove lines; moving the substrate relative to irradiation points of the treatment laser beams; and irradiating the treatment laser beams along second processing lines of the processing lines and forming second groove lines which are different from the first groove lines; and wherein the first groove lines and the second groove lines are alternately formed with each other.