Patent ID: 7960087
Filing Date: 2011-06-14
Classification: G03F,Y10S

Abstract:
1. A positive photosensitive composition comprising: (A) a resin having at least one repeating unit having a lactone structure at a side chain, at least one repeating unit having an alicyclic hydrocarbon structure substituted with a polar group represented by the following formulae (VIIa) or (VIIb), and at least one acid-decomposable repeating unit selected from the group consisting of four acid-decomposable units 13, 14, 15 and 19 shown below, the resin being capable of decomposing by the action of an acid to increase the solubility in an alkali developer, in which the lactone structure is represented by any of the following formulae (I-1) to (I-4); and (B) a compound capable of generating an acid represented by the following formula (II-1) or (II-2) upon irradiation with an actinic ray or a radiation: in formula (VIIa), R in formulae 13, 14, 15 and 19, Rx represents H, CH in formulae (I-1) to (I-4), Ra in formulae (II-1) and (II-2), Rc