发明授权
- 专利标题: Methodology for extracting effective lens aberrations using a neural network
- 专利标题(中): 使用神经网络提取有效镜片像差的方法
-
申请号: US09205898申请日: 1998-12-04
-
公开(公告)号: US06272392B1公开(公告)日: 2001-08-07
- 发明人: Luigi Capodieci
- 申请人: Luigi Capodieci
- 主分类号: G06F1900
- IPC分类号: G06F1900
摘要:
A method (250) of extracting effective imaging system aberrations from test data collected from test structures (220) constructed from a lithography system having an imaging system associated therewith includes inputting (264) experimental critical dimension data corresponding to fabricated features (220) on a substrate (212) to a neural network (208). The method (250) also includes inputting (266) nominal critical dimension data corresponding to the fabricated features on the substrate (212) to the neural network (208) and determining (268) the effective aberrations of the imaging system associated with the lithography system used to fabricate the features (220) using the neural network (208).
信息查询