Patent ID: 9599762
Date: 2017-03-21
CPC Classifications: G02B,G02F

Claim:
1. A wire grid polarizer, comprising: a substrate; a first grid layer disposed on the substrate, comprising at least one first grid, and having a certain pitch and height; and a second grid layer comprising at least one second grid, having a certain pitch and height, on the first grid; wherein a ratio of a width of the first grid to a width of the second grid satisfies 1:(0.2 to 1.5), wherein a height of the first grid layer is larger than the height of the first grid, wherein the first grid layer and the first grid are made of a polymer material, wherein the substrate comprises a material different from the polymer material of the first grid layer, wherein a width of an upper surface of the first grid is larger than a width of a lower surface of the second grid, and wherein the second grid comprises side surfaces having an inclination with respect to the lower surface of the second grid.