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    • 1. 发明公开
    • Method and apparatus for processing semiconductor wafers
    • Verfahren und Vorrichtung zur Behandlung von Halbleiterscheiben
    • EP0926708A3
    • 2003-08-20
    • EP98310683.2
    • 1998-12-23
    • SIEMENS AKTIENGESELLSCHAFTInternational Business Machines Corporation
    • Hoinkis, MarkRestaino, Darryl
    • H01L21/00
    • H01L21/6831H02N13/00
    • Method and apparatus are provided for processing semiconductor wafers, and in particular for determining a warpage of a wafer (14) for providing a minimum clamping voltage to an electrostatic chuck (ESC) when the wafer is subsequently processed thereon. The apparatus includes an electrostatic chuck (12, 120) and a control arrangement (16, 18, 20). The electrostatic chuck includes a clamping surface (13, 130) for clamping a wafer thereto by a clamping force that is dependent on a clamping voltage applied to the electrostatic chuck. The control arrangement is used to detect an inherent warpage in the wafer prior to a processing of that wafer, and determine a minimum clamping voltage from the measured warpage that is to be applied to the electrostatic chuck during a subsequent processing of the wafer. The minimum clamping voltage has a value for each wafer that securely clamps the wafer to the clamping surface and avoids excessive warpage and backside abrasion of the wafer. The control arrangement includes a suitable wafer warpage measuring tool (20, 50, 52, 54) such as, for example, a capacitance warpage measuring tool (50, 52, 54) or a optical warpage measuring tool (20) that measures the inherent warpage of a wafer, and an electrostatic chuck software control (18). The electrostatic chuck software control uses the measured warpages to determine and store data of a minimum clamping voltages and an associated wafer identification for each wafer for use in subsequently processing each wafer.
    • 该装置包括具有夹紧表面的单个双极静电卡盘(12),该夹紧表面用于当晶片被处理时通过施加到卡盘上的钳位电压的力来夹紧到晶片(14)。 控制装置(16,18,20)在晶片在卡盘上被处理之前测量晶片的固有翘曲。 翘曲用于确定在晶片处理期间施加到卡盘的最小钳位电压。
    • 2. 发明公开
    • Method and apparatus for processing semiconductor wafers
    • 用于治疗的半导体晶片的方法和设备
    • EP0926708A2
    • 1999-06-30
    • EP98310683.2
    • 1998-12-23
    • SIEMENS AKTIENGESELLSCHAFTInternational Business Machines Corporation
    • Hoinkis, MarkRestaino, Darryl
    • H01L21/00
    • H01L21/6831H02N13/00
    • Method and apparatus are provided for processing semiconductor wafers, and in particular for determining a warpage of a wafer (14) for providing a minimum clamping voltage to an electrostatic chuck (ESC) when the wafer is subsequently processed thereon. The apparatus includes an electrostatic chuck (12, 120) and a control arrangement (16, 18, 20). The electrostatic chuck includes a clamping surface (13, 130) for clamping a wafer thereto by a clamping force that is dependent on a clamping voltage applied to the electrostatic chuck. The control arrangement is used to detect an inherent warpage in the wafer prior to a processing of that wafer, and determine a minimum clamping voltage from the measured warpage that is to be applied to the electrostatic chuck during a subsequent processing of the wafer. The minimum clamping voltage has a value for each wafer that securely clamps the wafer to the clamping surface and avoids excessive warpage and backside abrasion of the wafer. The control arrangement includes a suitable wafer warpage measuring tool (20, 50, 52, 54) such as, for example, a capacitance warpage measuring tool (50, 52, 54) or a optical warpage measuring tool (20) that measures the inherent warpage of a wafer, and an electrostatic chuck software control (18). The electrostatic chuck software control uses the measured warpages to determine and store data of a minimum clamping voltages and an associated wafer identification for each wafer for use in subsequently processing each wafer.