Patent ID: 6695947
Filing Date: 2004-02-24
Classification: G01B,G03F,H01L,Y10S

Abstract:
A clustered device for manufacturing a semiconductor device, comprising:a plurality of processing rooms for processing a wafer having a semiconductor region; a shared container enclosing a space containing the plurality of processing rooms such that the space is held in an atmosphere disconnected from an external space; transporting means for transporting the wafer within the shared container; optical measuring means for optically evaluating a surface state of the wafer being disposed at any site in the shared container; wherein the optical measuring means comprises: a first light source for generating exciting light; a second light source for generating measuring light; a first light guiding member for intermittently irradiating the semiconductor region of the wafer in the shared container with the exciting light generated from the first light source; a second light guiding member for irradiating the semiconductor region with the measuring light generated from the second light source; reflectance measuring means for measuring the reflectance of the measuring light with which the semiconductor region is irradiated; a third light guiding member for causing the measuring light reflected by the semiconductor region to be incident upon the reflectance measuring means; and change calculating means for receiving an output of the reflectance measuring means and calculating a change rate of reflectance of the measuring light by dividing the difference between the reflectances of the measuring light when the semiconductor region is irradiated and not irradiated with the exciting light by the reflectance of the measuring light when the semiconductor region is not irradiated with the exciting light.