Patent ID: 7465523
Filing Date: 2008-12-16
Classification: G03F

Abstract:
1. A production method of a transfer mask, comprising: a step of preparing a substrate having a substrate for forming a support by back etching for supporting a thin film layer, an etching stopper layer formed on said substrate, and the thin film layer formed on said etching stopper layer; a step of carrying out back etching of the substrate; a step of forming a resist layer on said thin film layer; a step of carrying out exposure/development of a predetermined mask pattern to said resist layer to form a resist pattern; and a step of forming a mask pattern in the thin film layer by etching using said resist pattern, said method characterized by further comprising: a step of, before forming said resist layer, forming on said thin film layer a stress control layer that cancels a stress change of the thin film layer generated in production processes of the mask; and a step of etching said stress control layer along with formation of said mask pattern.