Patent ID: 6887645

Claim:
A negative resist composition to be irradiated with one of an electron beam and X ray comprising: (A) an alkali-soluble resin; (B) a compound capable of generating an acid upon irradiation with a radiation; (C) a crosslinking agent capable of crosslinking by the action of an acid; and (D) one of solvent mixtures (DI) and (DII): (DI) a solvent mixture containing at least one solvent selected from the group A below and at least one solvent selected from the group B below; and (DII) a solvent mixture containing at least one solvent selected from the group A below and at least one solvent selected from the group C below: group A: a propylene glycol monoalkyl ether carboxylate; group B: a propylene glycol monoalkyl ether, an alkyl lactate, an acetic ester, a chain ketone and an alkyl alkoxypropionate; group C: a Î³-butyrolactone, an ethylene carbonate and a propylene carbonate.