Patent ID: 6670105
Filing Date: 2003-12-30
Classification: G02B,G03F

Abstract:
A method of manufacturing a structure arraying a plurality of step-like elements each having at least three steps, said method comprising the steps of:etching, using a first resist pattern, a first region of a film comprising multiple layers having different etching rates formed on a substrate, corresponding to lowest steps of the step-like elements, to a first depth, whereby surfaces of the lowest steps of the step-like elements are defined; and etching, subsequently, using a second resist pattern different from the first resist pattern, a second region of the film, corresponding to other steps of the step-like elements, to a second depth, whereby surfaces of these said steps of the step-like elements are defined, wherein side walls of the step-like elements are covered with the second resist pattern during the etching of the second region.