Techniques for void-free material depositions

    公开(公告)号:US12131948B2

    公开(公告)日:2024-10-29

    申请号:US18224904

    申请日:2023-07-21

    CPC classification number: H01L21/76879 H01L21/486

    Abstract: Embodiments herein include void-free material depositions on a substrate (e.g., in a void-free trench-filled (VFTF) component) obtained using directional etching to remove predetermined portions of a seed layer covering the substrate. In several embodiments, directional etching followed by selective deposition can enable fill material (e.g., metal) patterning in tight spaces without any voids or seams. Void-free material depositions may be used in a variety of semiconductor devices, such as transistors, dual work function stacks, dynamic random-access memory (DRAM), non-volatile memory, and the like.

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