Wire grid polarizer, method of manufacturing the same, and display device

A method of manufacturing a wire grid polarizer, comprising:

• forming a plurality of cuboid-shaped projections that are arranged at equal intervals and parallel to each other on a surface of a substrate;
• performing, in a first predetermined direction, which is formed by rotating counterclockwise by a preset angle from a height direction of a projection, an evaporating operation or a sputtering operation on each projection to form a metal layer on a first side surface and a top surface of the projection;
• performing, in a second predetermined direction, which is formed by rotating clockwise by the preset angle from the height direction of the projection, the evaporating operation or the sputtering operation on each projection to form the metal layer on a second side surface and the top surface of the projection;
• and
• etching completely the metal layer formed on the top surface of the projection by a mask to obtain a wire grid of the wire grid polarizer,
• wherein the first predetermined direction and a second determination direction is each of a preset angle θ with respect to a height direction of the projection, and the preset angle θ is less than 90 degrees.