TREATMENT LIQUID, CHEMICAL MECHANICAL POLISHING METHOD, AND METHOD FOR TREATING SEMICONDUCTOR SUBSTRATE

    公开(公告)号:US20230099612A1

    公开(公告)日:2023-03-30

    申请号:US17965554

    申请日:2022-10-13

    Inventor: Tetsuya Kamimura

    Abstract: An object of the present invention is to provide a treatment liquid for a semiconductor substrate, which has excellent corrosion prevention performance for a metal-containing layer. In addition, another object of the present invention is to provide a chemical mechanical polishing method and a method for treating a semiconductor substrate.
    The treatment liquid of an embodiment of the present invention is a treatment liquid for a semiconductor substrate, which includes a component A having two or more onium structures in the molecule and water, and has a pH of 6.0 to 13.5 at 25° C.

    Filtering device, purification device, chemical liquid manufacturing device, filtered substance to be purified, chemical liquid, and actinic ray-sensitive or radiation-sensitive resin composition

    公开(公告)号:US11559758B2

    公开(公告)日:2023-01-24

    申请号:US16745493

    申请日:2020-01-17

    Abstract: An object of the present invention is to provide a filtering device which makes it possible to obtain a chemical liquid having excellent performance and enables filter media to have sufficiently long pot life. Another object of the present invention is to provide a purification device, a chemical liquid manufacturing device, a filtered substance to be purified, a chemical liquid, and an actinic ray-sensitive or radiation-sensitive resin composition. A filtering device according to an embodiment of the present invention has a first filter unit including a first filter, which satisfies at least one condition selected from the group consisting of following conditions 1 to 3, and a housing accommodating the first filter and a second filter unit including a second filter different from the first filter and a housing accommodating the second filter, in which the first filter unit and the second filter unit are independently disposed in a pipe line through which a substance to be purified is supplied. Condition 1: the filter has a filter medium including two or more layers containing materials different from each other. Condition 2: the filter has a filter medium including two or more layers having different pore structures. Condition 3: the filter has a filter medium including one layer in which different materials are mixed together.

    Polishing liquid and chemical mechanical polishing method

    公开(公告)号:US11359113B2

    公开(公告)日:2022-06-14

    申请号:US16939227

    申请日:2020-07-27

    Inventor: Tetsuya Kamimura

    Abstract: A polishing liquid, which is used for chemical mechanical polishing, includes ceria particles having an average aspect ratio of 1.5 or more; and an anionic polymer or a cationic polymer, in which a pH of the polishing liquid is 3 to 8. In a case where the polishing liquid contains the anionic polymer, the polishing liquid further includes an inorganic acid or an organic acid including at least one group selected from the group consisting of a carboxylic acid group, a phosphoric acid group, a phosphonic acid group, and a sulfonic acid group.

    Treatment liquid and treatment liquid housing body

    公开(公告)号:US11175585B2

    公开(公告)日:2021-11-16

    申请号:US16172027

    申请日:2018-10-26

    Abstract: An object of the present invention is to provide a treatment liquid which is capable of suppressing the generation of defects of a semiconductor device and has excellent corrosion resistance and wettability. The treatment liquid of the present invention is a treatment liquid for a semiconductor device, containing at least one organic solvent selected from the group consisting of ethers, ketones, and lactones, water, and a metal component including at least one metal element selected from the group consisting of Na, K, Ca, Fe, Cu, Mg, Mn, Li, Al, Cr, Ni, Ti, and Zn, in which the content of water in the treatment liquid is 100 ppb by mass to 100 ppm by mass and the content of the metal component in the treatment liquid is 10 ppq by mass to 10 ppb by mass.

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