Patent ID: 8105760

Claim:
A process for forming a pattern, comprising the steps of: applying a first positive resist composition comprising a polymer onto a substrate to form a first resist coating, the polymer comprising recurring units which become alkali soluble under the action of acid, heat treating the first resist coating, exposing to high-energy radiation, heat treating the exposed coating, developing the coating with an alkaline developer to form a first resist pattern, applying a pattern surface coating composition comprising a hydroxyl-containing crosslinkable polymer onto the first resist pattern and causing the hydroxyl-containing polymer to crosslink with the aid of acid and heat, thereby covering the first resist pattern with a film of the crosslinked polymer, applying a second positive resist composition thereto 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 an alkaline developer to form a second resist pattern.