Patent ID: 7846640

Claim:
A developer composition for positive resists, comprising 2 to 5% by mass of tetramethylammonium hydroxide and a surfactant in an aqueous solution, said surfactant containing an anionic surfactant represented by the following general formula (I): wherein at least one member of R 1 and R 2 represents an alkyl or alkoxy group having 5 to 18 carbon atoms and any remaining member represents a hydrogen atom, or an alkyl or alkoxy group having 5 to 18 carbon atoms, and at least one member of R 3 , R 4 and R 5 represents a group represented by the following general formula (II): —SO 3 M (II) wherein M represents a metal atom selected from the group consisting of sodium, potassium, and calcium, and any remaining member represent a hydrogen atom or a group represented by the above general formula (II), provided that, in the general formula (I), when two or more groups represented by the general formula (II) are present, M may be the same or different, wherein the amount of said anionic surfactant is in the range of 1,000 to 50,000 ppm based on said developer composition, and wherein said positive resists comprise a novolak resin and a naphthoquinone diazide compound.