申请人:International Business Machines Corporation
公开号:US07300739B2
公开(公告)日:2007-11-27
The present invention provides polymers that are useful in negative resist compositions. Polymers of the present invention comprise (1) a first monomer having a polar functional group; (2) a second monomer; and optionally, (3) a third monomer that imparts at least one characteristic selected from crosslinkable functionality, etch resistance, and solubility modulation. The first monomer provides an acid catalyzed polarity switch upon elimination of the polar functional group, whereas, the second monomer provides aqueous dissolution. The polymers of the present invention may be incorporated into negative resist compositions, which may also include photoacid generators, crosslinking agents, basic compounds, solvents, dissolution accelerators, photobase generators, latent basic compounds, surfactants, adhesion promoters, and anti-foaming agents.
本发明提供了在负型光刻胶组成物中有用的聚合物。本发明的聚合物包括(1)具有极性官能团的第一单体;(2)第二单体;以及可选的(3)赋予至少一种特性的第三单体,所述特性选自交联功能、蚀刻抗性和溶解度调节。第一单体在消除极性官能团时提供酸催化的极性切换,而第二单体提供水溶性。本发明的聚合物可以并入负型光刻胶组成物中,该组成物还可以包括光酸发生剂、交联剂、碱性化合物、溶剂、溶解加速剂、光碱发生剂、潜在碱性化合物、表面活性剂、粘附促进剂和抗泡剂。