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    • 2. 发明公开
    • 웨이퍼 홀딩 장치 상의 플레이팅 검출
    • 在保温装置上检测镀层
    • KR1020140103082A
    • 2014-08-25
    • KR1020140017501
    • 2014-02-14
    • 램 리써치 코포레이션
    • 메이어스티븐티.푸하이잉폰누스와미토마스아난드부캘루브라이언엘.
    • H01L21/288
    • G01N21/9501C25D17/001C25D17/06C25D21/12G01N27/9046
    • According to embodiments of the specification, the present invention relates to a method and apparatus for detecting whether unwanted metallic deposits are present on the bottom of a substrate holder used in an electroplating apparatus. When the unwanted deposits exist, the unwanted deposits are harmful to an electroplating process because the deposits absorb a current that is intended to cause electroplating on a substrate. When the current is absorbed, the quality of the electroplated substrate is poor. For instance, features positioned near the edge of a substrate are plated at an insufficient thickness. Further, a great amount of the current is absorbed, the overall thickness of the material plated on the substrate may be too thin. Accordingly, there is a need to detect whether the unwanted deposits are present or not in order to avoid plating of the substrate when the unwanted deposits are present. This detection will help preserve costly wafers.
    • 根据说明书的实施例,本发明涉及一种用于检测在电镀设备中使用的衬底保持器的底部是否存在不需要的金属沉积物的方法和装置。 当存在不需要的沉积物时,不需要的沉积物对电镀工艺是有害的,因为沉积物吸收旨在在基底上引起电镀的电流。 当电流被吸收时,电镀基板的质量差。 例如,位于基板边缘附近的特征以不足的厚度被镀覆。 此外,大量的电流被吸收,镀在基板上的材料的整体厚度可能太薄。 因此,需要检测是否存在不需要的沉积物,以便在存在不需要的沉积物时避免基板的镀覆。 这种检测将有助于保护昂贵的晶圆。