Patent ID: 9017928
Filing Date: 2015-04-28
Classification: G03F

Abstract:
1. A method for manufacturing a resin structure for the formation of a micro-structure, comprising the steps of: (A) applying an optically patternable film-forming composition onto a substrate, said composition comprising (1) a polymer having some phenolic hydroxyl groups protected with an acid-labile protective group, (2) a photoacid generator, (3) an epoxy compound containing at least two epoxy groups and having a molecular weight of 200 to 3,000, and (4) an organic solvent, (B) heating the composition on the substrate to form an optically patternable sacrificial film having a thickness of 1 to 30 μm, (C) exposing the sacrificial film to ultraviolet radiation having a wavelength of 200 to 450 nm as first high-energy radiation in accordance with a pattern layout image, (D) developing the sacrificial film in an alkaline developer to form a sacrificial film pattern, (E) exposing the sacrificial film pattern to second high-energy radiation which is ultraviolet radiation having a wavelength of 254 nm or a broad band of ultraviolet radiation covering 254 nm, and (F) heating the substrate at 80 to 250° C., wherein the exposure dose of first high-energy radiation in step (C) is up to 250 mJ/cm at the end of step (F), the sacrificial film has a sidewall which maintains an angle of 80° to 90° relative to the substrate.