Patent ID: 6506534
Filing Date: 2003-01-14
Classification: G03F,H01L,Y10S

Abstract:
A negative resist composition developable with basic solutions, which comprises:(1) a film-forming polymer which is itself soluble in basic aqueous solutions, and contains a first monomer unit with an alkali-soluble group and a second monomer unit with an alcohol structure capable of reacting with said alkali-soluble group, and (2) a photo acid generator which, when decomposed by absorption of image-forming radiation, is capable of generating an acid that can induce reaction between the alcohol structure of said second monomer unit and the alkali-soluble group of said first monomer unit, or protect the alkali-soluble group of said first monomer unit, and being itself soluble in basic aqueous solutions but, upon exposure to said image-forming radiation, being rendered insoluble in basic aqueous solutions at its exposed sections as a result of the action of said photo acid generator.