Polishing liquid and polishing method

    公开(公告)号:US12098300B2

    公开(公告)日:2024-09-24

    申请号:US17431635

    申请日:2019-02-19

    IPC分类号: C09G1/02 H01L21/3105

    CPC分类号: C09G1/02 H01L21/31053

    摘要: An aspect of the present invention is a polishing liquid containing abrasive grains, a copolymer, and a liquid medium, in which the copolymer has a structure unit derived from at least one styrene compound selected from the group consisting of styrene and a styrene derivative and a structure unit derived from acrylic acid, a content of the copolymer is more than 0.01% by mass and 0.2% by mass or less based on the total amount of the polishing liquid, and a pH of the polishing liquid is more than 4.5.