发明申请
- 专利标题: METHOD OF MANUFACTURING A SEMICONDUCTOR DEVICE
- 专利标题(中): 制造半导体器件的方法
-
申请号: US13812505申请日: 2012-10-12
-
公开(公告)号: US20140120719A1公开(公告)日: 2014-05-01
- 发明人: Changliang Qin , Huaxiang Yin
- 申请人: Changliang Qin , Huaxiang Yin
- 优先权: CN201210283268.1 20120809
- 国际申请: PCT/CN12/01380 WO 20121012
- 主分类号: H01L21/3213
- IPC分类号: H01L21/3213
摘要:
The present invention relates to a method of manufacturing a semiconductor device for improving the spacer mask. In the present invention, a barrier layer and a sacrificial layer are formed, and the portions of the upper part of the spacer whose left and right sides differ greatly are ground away to leave the portion similar to a rectangle at the bottom of the spacer, which is used as the mask to perform the subsequent spacer masking technology. Thus the undesirable influences to the subsequent etching caused by the asymmetric profile of the spacer can be reduced as much as possible.
信息查询
IPC分类: