Patent ID: 8003295

Claim:
A process for forming a pattern, comprising the steps of: applying a first positive resist composition onto a substrate to form a first resist coating, heat treating the first resist coating, exposing to high-energy radiation, heat treating the exposed coating, developing the first coating with a developer to form a first resist pattern, said first positive resist composition comprising a polymer having copolymerized recurring units having naphthol and recurring units with an alkaline solubility that increases under the action of acid, crosslinking and curing the first resist coating by irradiating high-energy radiation of up to 200 nm wavelength to the first resist coating, applying a second positive resist composition onto the first resist-bearing substrate to form a second resist coating, heat treating the second resist coating, exposing to high-energy radiation, heat treating the exposed coating, and developing the second coating with a developer to form a second resist pattern.