Patent ID: 9400346
Filing Date: 2016-07-26
CPC Classification: B82Y,G02B,Y10S

Claim Text:
1. A method of manufacturing a reflective polarizer plate comprising: sequentially disposing a metal layer, a first barrier layer and a sacrificial layer on a substrate defining an opening area and a non-opening area; providing a plurality of first photo mask patterns, each having a first height and spaced apart from each other, on the sacrificial layer of the opening area, and providing a second photo mask pattern on the sacrificial layer of the non-opening area, the second photo mask pattern having a second height which is greater than the first height; providing a plurality of sacrificial layer patterns by selectively etching the sacrificial layer of the opening area using the plurality of first photo mask patterns and the second photo mask pattern as a mask; removing the plurality of first photo mask patterns, and removing only a portion of the second photo mask pattern; disposing a second barrier layer on the substrate on which the plurality of sacrificial layer patterns is provided; providing a plurality of first barriers disposed along sidewalls of the plurality of sacrificial layer patterns by anisotropically etching the second barrier layer; selectively removing only the plurality of sacrificial layer patterns of the opening area; providing a plurality of grid patterns spaced apart from each other, by providing a copolymer layer in a grid pattern area corresponding to a space between the plurality of first barriers and then performing patterning; and providing a wire grid polarizer having a plurality of nano wire patterns arranged in the opening area to be spaced apart from each other, and a metal film in the non-opening area, by performing patterning on the metal layer of the opening area using the plurality of grid patterns.