Patent ID: 6951380
Filing Date: 2005-10-04
Classification: B41J

Abstract:
1. A method of manufacturing a microstructure, comprising: a step of forming a thermally crosslinked first positive photosensitive material layer on a substrate, a step of forming on the first positive photosensitive material layer a second positive photosensitive material layer different from the first positive photosensitive material layer in a photosensitive wavelength range, a step of firstly forming a pattern on the second positive photosensitive material layer by decomposing and then developing only a desired area in the second positive photosensitive material layer, and a step of secondly forming a pattern different from that formed on the second positive photosensitive material layer on the first positive photosensitive material layer by decomposing and then developing a predetermined area in the first positive photosensitive material layer, wherein the first positive photosensitive material layer is an ionizing radiation decompositive positive resist composed of a methacrylic copolymer composite mainly containing a methacrylate and also containing methacrylic acid as a thermal crosslinking factor, where a methacrylic acid unit is 2 to 30 wt % and copolymer molecular weight is 5,000 to 50,000, and the second positive photosensitive material layer is an ionizing radiation decompositive positive resist which mainly contains polymethyl isopropenyl ketone.