Patent ID: 8193005
Filing Date: 2012-06-05
Classification: B81C,H01L

Abstract:
1. A method comprising: forming a plurality of layers comprising a hardmask on a top surface of a first substrate; forming a first plurality of high aspect ratio features extending through at least one of the layers, the first plurality of high aspect ratio features defined with an etching process using a first resist layer patterned with a photolithographic condition in a photolithography tool; removing at least one of the layers; in response to removing at least one of the layers, measuring a dimension of the first high aspect ratio features at different locations on the first substrate; changing the photolithographic condition in the photolithography tool based on the measured dimension; and processing a second substrate in the photolithography tool using the changed photolithographic condition, wherein processing the second substrate includes etching a second plurality of high aspect ratio features and measuring a dimension of the second plurality of high aspect ratio features.