Patent ID: 7905668
Filing Date: 2011-03-15
Classification: G03B,G03F,H01L

Abstract:
1. A coating/developing apparatus for laminating a resist film on an underlying film formed on a surface of a substrate and developing the resist film treated by light exposure to form a resist pattern, the apparatus comprising: an underlying film formation module configured to supply a chemical liquid onto the substrate to form a coating film as the underlying film; a mechanism configured to obtain a film thickness distribution of the underlying film on the surface of the substrate in accordance with a process parameter used for forming the underlying film; a light radiating portion configured to radiate light onto the surface of the substrate with the resist pattern formed thereon; a light receiving portion configured to receive light reflected from the surface of the substrate; a mechanism configured to obtain a light information profile representing a relationship concerning the light received by the light receiving portion between its wavelength and information included therein; a first storage section that stores data comprising correlations of different pattern information units including at least a line width of the resist pattern, different values of a film thickness of the underlying film, and different light information profiles; and a mechanism configured to use the film thickness distribution to obtain an estimated film thickness of the underlying film at a light-irradiation area on the surface of the substrate, and to check the estimated film thickness and a light information profile obtained at the light-irradiation area against the data to determine pattern information at the light-irradiation area.