Patent ID: 8722535
Filing Date: 2014-05-13
Classification: G06F,H01L

Abstract:
1. A pattern forming method comprising: forming an insulating layer on a major surface of a substrate; forming a first opening and a second opening on the insulating layer using a same mold, the first opening having a first length in a first direction along the major surface, the second opening having a second length longer than the first length in the first direction; forming a first pattern in the first opening; forming a second pattern in the second opening, the second pattern being made of a material different from a material for the first pattern and a material for the insulating layer; forming a self-assembled material film contacting the insulating layer, the first pattern and the second pattern; forming a third pattern with guidance of the second pattern by causing phase separation of the self-assembled material film; and forming a fourth pattern contacting the first pattern based on the third pattern.