Patent ID: 6929892
Filing Date: 2005-08-16
Classification: G03F,Y10S

Abstract:
1. A method of monitoring an exposure process comprising: a first step of observing, through electron microscopy, a resist pattern formed by exposure under various conditions in which an exposure dose and a focal position are changed to obtain observation data of the resist pattern; a second step of creating model data for correlating the exposure conditions with the observation data by use of the observation data obtained by observing the resist pattern obtained in the first step through the electron microscopy; a third step of observing, through the electron microscopy, a resist pattern formed through the exposure process to be monitored to obtain observation data; and a fourth step of collating the observation data obtained in the third step with the model data created in the second step to estimate a deviation amount of the exposure process to be monitored from proper conditions, wherein the resist pattern formed by the exposure under various conditions in which the exposure dose and the focal position are changed is a resist pattern changed in dimensions and in a shape of cross section from a tapered profile to an inverse tapered profile by a fluctuation in the exposure conditions.