METHOD OF FABRICATING SEMICONDUCTOR DEVICE AND THE SEMICONDUCTOR DEVICE

摘要

A method of fabricating a semiconductor device includes forming a plurality of mask patterns by anisotropically etching a mask-forming film until upper surfaces of core patterns are exposed. A facing pair includes a pair of the mask patterns facing the core pattern located between the paired mask patterns. The mask patterns of the facing pair have respective lower portions spaced from each other by a first distance. An adjacent pair includes a pair of mask patterns adjacent to each other with a space having no core pattern. The mask patterns of the adjacent pair have respective lower portions spaced from each other by a second distance. The mask patterns are formed so that the second distance is larger than the first distance.