Patent ID: 11966068
Assignee: DEXERIALS CORPORATION
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  G  B | IPC C  G

Claim 0:
1. A method of manufacturing an inorganic wave plate having a wire grid structure, comprising:
a polymer grid forming step of forming a polymer grid, by using a physical guide to arrange a polymer having a repeating unit containing a carbonyl group, on at least one surface of a transparent substrate, so as to form a grid extending in a predetermined direction, by self-assembly of the polymer;
a metal oxide precursor contact step of forming a metal oxide precursor binding site, by contacting vapor of the metal oxide precursor with the polymer grid to bind metal of the metal oxide precursor to the carbonyl group; and
an oxidation step of forming a metal oxide grid containing the metal oxide as a main component, by contacting moisture vapor with the grid having the metal oxide precursor binding site to oxidize the metal oxide precursor binding site to form the inorganic wave plate,
wherein the inorganic wave plate comprises:
the transparent substrate; and
a plurality of grid-shaped protruding portions that are arranged on at least one surface of the transparent substrate at a pitch shorter than a wavelength of light in a used band, and extend in the predetermined direction,
wherein the plurality of grid-shaped protruding portions contain the metal oxide grid and have two or more types of different pitches present in a mixed manner.