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    • 4. 发明授权
    • Electrostatic clamp with lip seal for clamping substrates
    • 用于夹持基板的带唇形密封的静电夹
    • US5805408A
    • 1998-09-08
    • US577265
    • 1995-12-22
    • Robert MaraschinPaul Kevin ShufflebothamMichael Scott Barnes
    • Robert MaraschinPaul Kevin ShufflebothamMichael Scott Barnes
    • B25J15/06H01L21/683H02N13/00
    • H01L21/6833H01L21/6831
    • An electrostatic clamping apparatus with lip seal for holding substrates in a vacuum processing chamber. The apparatus includes an electrostatic clamp, a sealing member surrounding the electrostatic clamp, and an edge ring surrounding the sealing member and holding the sealing member in place against the electrostatic clamp. The sealing member provides a seal between the electrostatic clamp and the substrate. This seal prevents the leakage of temperature control gas into the processing chamber and prevents process gas from reaching the electrostatic clamp and/or causing arcing in the chamber. In addition, by leaving a small gap between the sealing surface of the resilient sealing member and the edge of the electrostatic clamp, a helium distribution channel is created outside the electrostatic clamp top surface thus maximizing available contact area between the substrate and the clamp.
    • 具有用于将基板保持在真空处理室中的唇形密封件的静电夹紧装置。 该装置包括静电夹持器,围绕静电夹具的密封构件以及围绕密封构件的边缘环,并将密封构件保持在静电夹具的适当位置上。 密封构件在静电夹和衬底之间提供密封。 该密封件防止温度控制气体泄漏到处理室中,并防止工艺气体到达静电夹持器和/或引起腔室中的电弧。 此外,通过在弹性密封构件的密封表面和静电夹具的边缘之间留下小的间隙,在静电夹具顶表面的外部形成氦分配通道,从而最大化衬底和夹具之间的可用接触面积。
    • 6. 发明授权
    • Electrostatic clamping method and apparatus for dielectric workpieces in
vacuum processors
    • 真空处理器中介电工件的静电夹紧方法和装置
    • US5847918A
    • 1998-12-08
    • US542959
    • 1995-10-13
    • Paul Kevin ShufflebothamMichael S. Barnes
    • Paul Kevin ShufflebothamMichael S. Barnes
    • B65G49/06B25J15/06H01L21/683H02N13/00
    • H01L21/6833Y10T279/23
    • A dielectric workpiece is clamped to a holder in a vacuum plasma processor chamber by applying the plasma to a surface of the workpiece exposed to the plasma simultaneously with applying a relatively high voltage to an electrode on the holder. The electrode is in close proximity to a portion of the workpiece not exposed to the plasma so (1) the electrode is at a voltage substantially different from the plasma, (2) electrostatic charge is applied to the exposed surface by the plasma, and (3) an electrical conducting path is provided via the plasma from the electrostatic charge to a terminal at a potential substantially different from the voltage applied to the electrode. Sufficient electrostatic clamping force is applied through the thickness of the workpiece by a voltage difference between the DC voltage applied to a single electrode and charge applied by the plasma to the exposed face to hold the substrate on the holder.
    • 通过将等离子体施加到暴露于等离子体的工件的表面,同时向保持器上的电极施加相对高的电压,将电介质工件夹持在真空等离子体处理器室中的保持器上。 电极非常接近未暴露于等离子体的工件的一部分,所以(1)电极处于与等离子体基本不同的电压,(2)静电电荷通过等离子体施加到暴露的表面,和( 3)通过等离子体从静电电荷向终端提供与施加到电极的电压基本不同的电位的导电路径。 通过施加到单个电极的DC电压和由等离子体施加的电荷与暴露面之间的电压差,通过工件的厚度施加足够的静电夹持力,以将衬底保持在保持器上。
    • 10. 发明授权
    • Two-element plasma resistant lightpipe assembly
    • 双元素等离子体光管组件
    • US6086246A
    • 2000-07-11
    • US85149
    • 1998-05-26
    • Paul Kevin ShufflebothamHeinrich Von Bunau
    • Paul Kevin ShufflebothamHeinrich Von Bunau
    • G01J5/04G01J5/06G01J5/10G01J5/30G01M15/00
    • G01J5/041
    • A plasma resistant lightpipe is used in a pyrometric temperature measurement system to measure the temperature of a substrate in a reaction chamber. The plasma resistant lightpipe includes two lightpipe elements. The first lightpipe element, which may be a sapphire rod or aluminum nitride rod, is positioned within a backside gas delivery path to the chamber. The first lightpipe element is resistant to etching caused by reactive plasmas or gases used within the chamber, such as fluorine. The second lightpipe, which is a quartz rod, is positioned beneath the first lightpipe element such that the two lightpipe elements are optically coupled. The first lightpipe element may be directly mounted in the base plate or electrostatic chuck of the pedestal assembly or directly mounted in a plug, which is then positioned within the base plate or electrostatic chuck. The first lightpipe element is securely mounted into the base plate, electrostatic chuck, or the plug by shrink and/or interference fitting, by spring pins or set screws. In one embodiment, the interface between the first lightpipe element and the second lightpipe element is set in a plane defined by the top surface of the seal plate. Thus, there is little danger of damaging the lightpipe elements during the removal of the electrostatic chuck and base plate.
    • 在高温测量系统中使用耐等离子体光管来测量反应室中的基底的温度。 耐等离子体光管包括两个光管元件。 可以是蓝宝石棒或氮化铝棒的第一光管元件位于到腔室的后侧气体输送路径内。 第一光管元件抵抗由室内使用的反应性等离子体或气体引起的蚀刻,例如氟。 作为石英棒的第二光管位于第一光管元件的下方,使得两个光管元件光学耦合。 第一光管元件可以直接安装在基座组件的基板或静电卡盘中,或者直接安装在插头中,然后定位在基板或静电卡盘内。 第一个光管元件通过弹簧销或固定螺钉通过收缩和/或干涉配合牢固地安装到基板,静电卡盘或插头中。 在一个实施例中,将第一光管元件和第二光管元件之间的界面设置在由密封板的顶表面限定的平面中。 因此,在去除静电卡盘和基板期间几乎没有损坏光管元件的危险。