Patent ID: 7255971
Filing Date: 2007-08-14
Classification: G03F,Y10S

Abstract:
1. A positive resist composition comprising the components of: (A) a compound capable of generating an acid upon irradiation with one of an actinic ray and a radiation; (B) a resin that is insoluble or slightly soluble in alkalis, but becomes alkali-soluble under an action of an acid; (C) a basic compound; (D) a non-polymeric compound comprising at least three alcoholic hydroxyl groups or at least three substituted alcoholic hydroxyl groups, comprising at least one cyclic structure, and comprising at least one ethereal oxygen-containing tetrahydrofuran or tetrahydropyran ring, and (E) a surfactant comprising at least one of a fluorine atom and a silicon atom, wherein the component (B) is a resin comprising an alicyclic hydrocarbon group that is monocyclic or polycyclic or a resin having a structure wherein at least one fluorine atom is substituted in at least one of a main chain and a side chain of a polymer, and being capable of decomposing by an action of an acid to increase in solubility in an alkaline developer; and the component (D) does not contain a phenolic hydroxyl group or a substituted phenolic hydroxyl group.