Abstract:
A patterning method using a metal mask includes sequentially forming a lower metal layer and an upper metal layer on an etching object layer, forming an upper metal mask, forming the upper metal mask including patterning the upper metal layer, forming a lower metal mask, forming the lower metal mask including patterning the lower metal layer using the upper metal mask, and patterning the etching object layer using the upper metal mask.
Abstract:
A method of manufacturing a semiconductor device, the method including forming an insulating layer on a substrate; forming a metallic hardmask pattern on the insulating layer; forming a recess by partially etching the insulating layer; forming a metallic protection layer on an inner side wall of the recess; etching the insulating layer to form a hole that penetrates the insulating layer by using the metallic hardmask pattern and the metallic protection layer as etching masks; and removing the metallic hardmask pattern and the metallic protection layer.