Substrate transfer apparatus
    11.
    发明授权

    公开(公告)号:US12112970B2

    公开(公告)日:2024-10-08

    申请号:US17460424

    申请日:2021-08-30

    CPC classification number: H01L21/6838 B25J15/0683 B65G47/91 B65G2249/045

    Abstract: A substrate transfer apparatus includes a body portion having a holding region on a surface thereof corresponding to a substrate. The body portion moves so that the surface thereof approaches the substrate up to at least a first distance. A plurality of vacuum holes are distributed in the holding region and form negative pressure to provide suction force to the substrate disposed at the first distance. At least some of the plurality of vacuum holes are disposed at equal intervals at an edge of the holding region and have the same width. A plurality of air holes are distributed in the holding region and form positive pressure to provide a buoyancy force to the substrate close to the holding region at a second distance smaller than the first distance.

    NON-CONTACT TYPE GRIPPER
    12.
    发明公开

    公开(公告)号:US20240139972A1

    公开(公告)日:2024-05-02

    申请号:US18206635

    申请日:2023-06-07

    CPC classification number: B25J15/0658 B25J11/0095

    Abstract: A non-contact type gripper may include a gripping plate, a plurality of blowing holes, a plurality of suction holes and a cavity. The blowing holes may be formed at the gripping plate to inject a gas to an object. The suction holes may be formed at the gripping plate to suck the gas. The cavity may be extended from at least one of the blowing holes to suppress a pressure drop of the gas. The gas flowing through the cavities extended from the corner suction hole and the blowing holes between the adjacent suction holes may receive a low flow resistance. Thus, a pressure drop of the gas injected from the blowing holes may be suppressed by the cavities to maintain a pressure of the gas, thereby preventing a deflection of the corner portion of the object such as the semiconductor chip by a strong suction force. As a result, the non-contact type gripper may grip the object in the non-contact manner to prevent a contamination of the object.

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