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公开(公告)号:US20150072532A1
公开(公告)日:2015-03-12
申请号:US14025524
申请日:2013-09-12
Applicant: United Microelectronics Corp.
Inventor: Wen-Liang Huang , Chia-Hung Lin , Chun-Chi Yu
IPC: H01L21/308
CPC classification number: H01L21/3086 , H01L21/0271 , H01L21/0337 , H01L21/3088
Abstract: A patterning method is provided. First, a material layer is formed over a substrate. Thereafter, a plurality of directed self-assembly (DSA) patterns are formed on the material layer. Afterwards, a patterned photoresist layer is formed by using a single lithography process. The patterned photoresist layer covers a first portion of the DSA patterns and exposes a second portion of the DSA patterns. Further, the material layer is patterned by an etching process, using the patterned photoresist layer and the second portion of the DSA patterns as a mask.
Abstract translation: 提供了图案化方法。 首先,在基板上形成材料层。 此后,在材料层上形成多个定向自组装(DSA)图案。 之后,通过使用单个光刻工艺形成图案化的光致抗蚀剂层。 图案化的光致抗蚀剂层覆盖DSA图案的第一部分并且暴露DSA图案的第二部分。 此外,通过蚀刻工艺,使用图案化的光致抗蚀剂层和DSA图案的第二部分作为掩模来对材料层进行图案化。