EQUIPMENT AND METHOD FOR PROCESSING SEMICONDUCTOR WAFER AND SIMILAR DEVICE

    公开(公告)号:JPH11251420A

    公开(公告)日:1999-09-17

    申请号:JP36507798

    申请日:1998-12-22

    Applicant: SIEMENS AG IBM

    Abstract: PROBLEM TO BE SOLVED: To substantially prevent abrasions and scratches on the rear side of a wafer from becoming an excessive quantity during wafer processing. SOLUTION: When subsequent wafers 14 are processed subsequently on an electrostatic chuck, warpage of the wafer 14 is decided. The electrostatic chuck 12 clamps the wafer 14 on a clamping face by a clamping force. A controller detects the inherent warpage of the wafer 14 and decides on a minimum clamp voltage to be applied to the electrostatic chuck 12, based on the measured warpage. The voltage is a value decided for each wafer 14, so as to surely clamp the wafer 14 on the clamping face and to eliminate excessive warpage and abrasion on the rear side of the wafer 14. The data of the minimum clamp voltage and the related discriminating part for the wafer 14 for subsequent processing of each wafer 14 are decided and stored, by the use of the measured warpage.

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