Patent ID: 7182531
Filing Date: 2007-02-27
Classification: G03D,G03F,H01L

Abstract:
1. A developing apparatus for a substrate to be processed, comprising: a processing part for performing a development process to dissolve an unnecessary portion in a photo resist film on the substrate to be processed by an alkaline developing fluid; a collecting part for collecting the developing fluid used in the development process at the processing part; an alkaline-concentration measuring part for measuring an alkaline concentration of the developing fluid collected; a resist-concentration calculating part for calculating a resist concentration corresponding to a measured value of the alkaline concentration for realizing a uniformity in development; a developer blending part for controlling the component of the developing fluid in order to accomplish the resist concentration calculated; and a developer supply part for supplying the processing part with the developing fluid whose component has been controlled in the developer blending part, in order to reuse the developing fluid.