Patent ID: 7273685
Filing Date: 2007-09-25
Classification: G03F

Abstract:
1. A method for controlling a process of producing semiconductor devices, comprising the steps of: irradiating light onto a wafer on which a pattern is formed and detecting scattered light from said wafer during the process of producing the semiconductor devices; obtaining shape information on said pattern by processing a signal of the detected scattered light; seeking a change in production conditions corresponding to said obtained shape information on the pattern by referring a relationship between a change in a production condition and a change in a scattered light waveform stored in a memory in advance; and using information on said sought change of the production conditions to control the production process of the semiconductor devices, wherein in the step of obtaining, said signal of the detected scattered light is a spectral waveform obtained by a spectroscope or an angle distribution waveform obtained by a change in reflected light with respect to an incident angle.