Patent ID: 8288284

Claim:
A substrate processing method for partially eliminating a substrate by etching using plasma processing, the method comprising: a lyophobic pattern formation step of printing a lyophobic liquid to an area to be etched away on a processing target surface of the substrate, thereby forming a lyophobic pattern; a resin film formation step of preparing a first liquid including at least a solvent and a resin and a second liquid whose viscosity is lower than a viscosity of the first liquid and supplying the liquids in descending sequence of the second liquid and the first liquid on the processing target surface of a substrate on which the lyophobic pattern is formed, thereby forming a resin film that is thicker than the lyophobic pattern in an area where the lyophobic pattern is not formed; a mask formation step of curing the resin film, to thus form on the processing target surface a mask for covering an area except for the area to be etched away; a lyophobic pattern removal step of removing the lyophobic pattern from the processing target surface after performance of processing pertaining to the mask formation step; an etching step of etching the substrate from the processing target surface thereof using plasma processing after processing pertaining to the lyophobic pattern removal step; and a mask removal step of removing the mask from the processing target surface after completion of processing pertaining to the etching step.