Patent ID: 8092737

Claim:
A method of micro/nano curved surface imprinting, comprising: providing a heated sheet and placing the heated sheet between two matching male/female heated molds; pressing the two matching male/female heating molds and the heated sheet placed in-between to shape the heated sheet; removing the two matching male/female heated molds and obtaining a pre-shaping sealing film providing a stack comprising a curved substrate, the pre-shaping sealing film having a shape corresponding to the shape of the curved substrate, a first mold, and a first moldable layer disposed on a surface of the substrate in a chamber, wherein the chamber is separated into a first and a second space by the pre-shaping sealing film, the first mold and the first moldable layer are located in the second space; applying a high pressure fluid from the first space to the stack when the first moldable layer is heated to be in a moldable state; and forming a first moldable layer wherein a pattern on the mold is imprinted onto the first moldable layer with a uniform imprinting pressure distribution throughout the whole curved substrate and a patterned curved substrate is formed.