A positive resist composition comprising (A) a compound capable of generating an acid upon irradiation with an actinic ray or radiation, (B) a resin capable of increasing the solubility in an alkali developer by the action of an acid, and (C) a compound having a specific structure, which decomposes by the action of an acid to generate an acid, a pattern forming method using the positive resist composition, and a compound for use in the positive resist composition are provided as a positive resist composition exhibiting good performance in terms of pattern profile, line edge roughness, pattern collapse, sensitivity and resolution in normal exposure (dry exposure), immersion exposure and double exposure, a pattern forming method using the positive resist composition and a compound for use in the positive resist composition.
一种正向抗蚀剂组合物,包括(A)一种在光射线或辐射照射下能生成酸的化合物;(B)一种在酸的作用下能增加在碱显影剂中的溶解度的
树脂;(C)一种具有特定结构的化合物,该化合物在酸的作用下分解生成酸;一种使用该正向抗蚀剂组合物的图案形成方法、本发明提供了一种正抗蚀剂组合物,在正常曝光(干法曝光)、浸泡曝光和双重曝光时,在图案轮廓、线缘粗糙度、图案塌陷、灵敏度和分辨率方面表现出良好的性能;还提供了一种使用该正抗蚀剂组合物的图案形成方法和一种用于该正抗蚀剂组合物的化合物。