Patent ID: 9601706
Date: 2017-03-21
CPC Classifications: C09D,G03F,H01L

Claim:
1. A pattern forming method comprising the following steps: (1) forming an organic semiconductor film on a substrate, (2) forming a protective film using a resin composition on the organic semiconductor film, wherein the resin composition contains two or more kinds of resins in which their main chain structures having a hydroxyl group are different, and contains water, (3) forming a resist film on the protective film by an actinic ray-sensitive radiation-sensitive resin composition (I) containing a resin capable of increasing a polarity by an action of an acid to decrease the solubility in a developer containing an organic solvent, or an actinic ray-sensitive or radiation-sensitive resin composition (II) containing a conjugated diene polymer or copolymer or a cyclized product of the polymer or the copolymer, and a crosslinking agent, (4)exposing the resist film, (5) developing the resist film with a developer containing an organic solvent to form a negative type resist pattern on the resist film, (6) forming a pattern on the protective layer by using water as a developer and using the resist pattern as a mask pattern, (7) forming a pattern on the organic semiconductor film by using dry or wet etching and using the resist and protective film pattern as a mask, and (8) removing the resist pattern using a peeling solution containing an organic solvent and further removing the protective film pattern using water.