Patent ID: 6627097
Filing Date: 2003-09-30
Classification: C23C,G03F,H01L

Abstract:
A shadow mask comprising:a support layer; a stopper layer, whose etching rate differs from etching rate of said support layer, formed on said support layer; and a surface layer formed on said stopper layer, wherein said support layer, said stopper layer and said surface layer comprise an opening having: a tapered portion which is formed through said support layer, said stopper layer and said surface layer and is broadened toward said support layer from said 10 surface layer; and a projected portion which is a part of said surface layer projecting toward the center of said tapered portion, wherein a side of said projected portion is broadened toward said support layer from said surface layer, wherein said stopper layer is a part of said support layer; and said stopper layer and said surface layer are bonded together, and wherein said stopper layer and said surface layer are bonded together via a polyimide film.