Patent ID: 9087875
Filing Date: 2015-07-21
Classification: B81C,H01L

Abstract:
1. A pattern formation method comprising: forming a first mask layer on a first surface of a substrate, the first mask layer including a first region and a second region, the first region having a first opening, the second region having a second opening; providing a protection film on the first region, the protection film including a first portion and a second portion, the first opening being filled with the first portion, a part of the first region being provided between the second portion and the substrate, and the protection film not being provided in the second opening; providing a self-assembling material in the second opening and not in the first opening; forming first and second phase regions in the second opening by phase-separating the self-assembling material; removing the protection film and the first phase region to form a third opening, the third opening being provided in the second opening, a width of the third opening along a direction parallel to the first surface being narrower than a width of the second opening along the direction; and processing the substrate using the first opening and the third opening.