申请人:Rohm and Haas Electronic Materials LLC
公开号:US11003074B2
公开(公告)日:2021-05-11
A pattern formation method, comprising: (a) providing a semiconductor substrate; (b) forming a photoresist pattern over the semiconductor substrate, wherein the photoresist pattern is formed from a photoresist composition comprising: a first polymer comprising acid labile groups; and a photoacid generator; (c) coating a pattern overcoat composition over the photoresist pattern, wherein the pattern overcoat composition comprises a second polymer and an organic solvent, wherein the organic solvent comprises one or more ester solvents, wherein the ester solvent is of the formula R1—C(O)O—R2, wherein R1 is a C3-C6 alkyl group and R2 is a C5-C10 alkyl group; (d) baking the coated photoresist pattern; and (e) rinsing the coated photoresist pattern with a rinsing agent to remove the second polymer. The methods find particular applicability in the manufacture of semiconductor devices.
一种图案形成方法,包括:(a) 提供半导体衬底;(b) 在半导体衬底上形成光刻胶图案,其中光刻胶图案由光刻胶组合物形成,光刻胶组合物包括包含可酸基团的第一种聚合物;以及光酸发生器; (c) 在光刻胶图案上涂覆图案涂层组合物,其中图案涂层组合物包含第二种聚合物和有机溶剂,其中有机溶剂包含一种或多种酯溶剂,其中酯溶剂的式为 R1-C(O)O-R2,其中 R1 为 C3-C6 烷基,R2 为 C5-C10 烷基;(d) 烘烤涂层光刻胶图案;以及 (e) 用漂洗剂漂洗涂层光刻胶图案,以去除第二种聚合物。这些方法特别适用于半导体器件的制造。