Patent ID: 9336809
Filing Date: 2016-05-10
CPC Classification: G11B

Claim Text:
1. A method using a block copolymer (BCP) for making an imprint template containing data regions and non-data regions separated from the data regions, the method comprising: providing a substrate; forming a heat sink layer on the substrate only in the data regions; depositing on the heat sink layer in the data regions and on the substrate in the non-data regions a sublayer for the BCP; patterning the sublayer into a pattern of stripes and spaces in the data regions and a pattern of features in the non-data regions; depositing hard mask material only in the non-data regions between the features in the non-data regions by directing hard mask material at an angle relative to the plane of the substrate while rotating the substrate about an axis orthogonal to the plane of the substrate using the stripes as a shadow mask to prevent deposition of hard mask material in the spaces between the stripes in the data regions; depositing a BCP simultaneously in the data regions and the non-data regions; selectively heating the BCP only in the data regions, the heat being absorbed by the underlying heat sink material in the data regions, to cause phase separation of the BCP into first and second components in the data regions, wherein there is no phase separation of the BCP in the non-data regions; removing one of the BCP components in the data regions, leaving the other BCP component in the data regions and leaving the BCP over the features in the non-data regions; and removing the BCP in the non-data regions leaving the pattern of features in the non-data regions.