Patent ID: 9607887
Date: 2017-03-28
CPC Classifications: H01L

Claim:
1. A method of manufacturing a semiconductor device, comprising: forming a convex portion above a substrate, the convex portion including an interconnect and a first film; forming a second film on the convex portion; forming a concave portion in the second film, the concave portion having a first bottom face that is an upper face of the first film and a second bottom face that is lower than the upper face of the first film; forming a polymer film in the concave portion by using a polymer that includes a first portion having a first affinity for the first film and a second portion having a second affinity lower than the first affinity for the first film; phase-separating the first portion and the second portion to form a first pattern and a second pattern in the polymer film, the first pattern containing the first portion and being located on the first bottom face, the second pattern containing the second portion and being located on the second bottom face; and selectively removing the first or second pattern.