Patent ID: 7875419

Claim:
A method for removing a resist pattern, comprising: forming a metal film over a substrate; forming a resist film of a positive resist composition containing a photosensitizer; exposing the resist film; developing the resist film to form a resist pattern over the metal film by using a developer; etching the metal film by using the resist pattern; removing the resist pattern by using a resist stripper which dissolves and removes the resist pattern after etching the metal film; irradiating a residue of the resist pattern with a light having a photosensitive wavelength region of the photosensitizer to react the photosensitizer in the residue of the resist pattern to the light after removing the resist pattern; and after the irradiating the residue of the resist pattern, removing the residue of the resist pattern by using the developer which dissolves and removes the residue of the resist pattern.