Patent ID: 7988873
Filing Date: 2011-08-02
Classification: H01L

Abstract:
1. A method of forming a mask pattern comprising: preparing a semiconductor substrate in which a first region and a second region partially overlapping each other in a third region are defined; depositing an organic mask layer and an inorganic mask layer on the semiconductor substrate; forming a first photoresist layer on the inorganic mask layer, the first photoresist layer exposing the first region; etching the inorganic mask layer in the first region using the first photoresist layer as an etch mask; removing the first photoresist layer; forming a second photoresist layer on the inorganic mask layer, the second photoresist layer exposing the second region; etching the inorganic mask layer in the second region using the second photoresist layer as an etch mask to expose the organic mask layer in the third region; removing the second photoresist layer; and removing the organic mask layer exposed in the third region.