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    • 2. 发明授权
    • Pin lift chuck assembly for warped substrates
    • 用于翘曲基材的销钉提升卡盘组件
    • US07292427B1
    • 2007-11-06
    • US10962737
    • 2004-10-12
    • Steven MurdochTimothy Blomgren
    • Steven MurdochTimothy Blomgren
    • H01L21/67
    • H01L21/68714H01L21/6838
    • A vacuum chuck apparatus may include chuck plate having a substantially flat chucking surface, one or more lift pins, and a lifting mechanism. The lift pins are configured to clamp a substrate at three or more locations. The lifting mechanism lifts the heads of the pins above the level of the chucking surface subsequently lowers the pins to pull the substrate to substantially conform to the chucking surface. A warped substrate may be secured to the chuck surface by raising the lift pins above the surface of chuck, securing a backside of the substrate with the lift pins at three or more locations, and lowering the lift pins to draw the substrate against the surface of the chuck so that the substrate substantially conforms to the surface of the chuck.
    • 真空吸盘装置可以包括具有基本上平坦的夹紧表面的卡盘板,一个或多个提升销和提升机构。 提升销被配置成在三个或更多个位置处夹持基板。 提升机构将销钉的头部提升到夹紧表面的高度之上,随后降低销以拉动基板以基本上符合夹紧表面。 翘曲的基底可以通过将提升销抬高到卡盘的表面上而固定到卡盘表面,将提升销的基板的背面固定在三个或更多个位置,并且降低升降销以将基板拉到 卡盘,使得基底基本上符合卡盘的表面。