Grafting design for pattern post-treatment in semiconductor manufacturing

    公开(公告)号:US11387104B2

    公开(公告)日:2022-07-12

    申请号:US16889506

    申请日:2020-06-01

    Abstract: A method for lithography patterning includes forming an opening in a first layer over a substrate and coating a grafting solution over the first layer and filling in the opening. The grafting solution comprises a grafting compound and a solvent. The grafting compound comprises a grafting unit chemically bonded to a linking unit chemically bonded to a polymer backbone. The grafting unit is attachable to the first layer. The method further includes curing the grafting solution so that a first portion of the grafting compound is attached to a surface of the first layer, thereby forming a second layer over the surface of the first layer. The method further includes transferring a pattern including the first layer and the second layer to the substrate.

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