Patent ID: 6835528
Filing Date: 2004-12-28
Classification: G03F,Y10S

Abstract:
A chemically amplified photoresist, comprising:a film-forming fluorine-containing polymer copolymerized from a first fluorine-containing comonomer having a polymerizable carbon-carbon double bond and a group cleavable under acid catalysis, one second comonomer different from said first comonomer having a polymerizable carbon-carbon double bond and a nucleophilically attackable anchor group for binding an amplification agent, and a third comonomer having exactly one polymerizable carbon-carbon double bond and an otherwise saturated carbon skeleton, said saturated skeleton having no group cleavable under acid catalysis and no anchor group, at least one of said second and third comonomer having a fluorine atom substituent to make said respective polymerizable carbon-carbon double bond electron-poor and act as an electron acceptor when polymerized, and said carbon-carbon double bond of the other of said second and third comonomers being electron-rich to act as an electron donor when polymerized; a photo acid generator; and a solvent.