Patent ID: 8252508
Filing Date: 2012-08-28
Classification: G03F,Y10S

Abstract:
1. A positive photosensitive composition using immersion exposure comprising: (A) 5 to 20 parts by weight of the total amount of at least one sulfonium salt compound that generates an acid upon irradiation with an actinic ray; (B) 100 parts by weight of the total amount of at least one fluorine atom-containing resin having a group that increases solubility of the resin in an alkaline developer by the action of an acid, wherein at least one basic compound is contained in an amount of 0.01 to 5% by weight in the positive photosensitive composition, based on the solid components of the positive photosensitive composition, and wherein the resin (B) has a repeating unit with no fluorine atom comprising a mixture of the following three repeating units (a), (b) and (c): (a) a monocyclic or polycyclic alicyclic hydrocarbon structure-having, acid-dissociating repeating unit; (b) a lactone structure-having repeating unit; and (c) a monocyclic or polycyclic alicyclic hydrocarbon structure and hydroxyl group-having repeating unit; and a fluorine-atom containing repeating unit having from 1 to 3 groups represented by formula (A-1): wherein R (C) a surfactant in an amount of 0.001 to 1% by weight based on the total amount of the positive photosensitive composition excluding solvent.