Invention Application
- Patent Title: WAFER CLAMP FOR CONTROLLING WAFER BOWING AND FILM STRESS
- Patent Title (中): 用于控制波浪和薄膜应力的波形夹
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Application No.: US14183291Application Date: 2014-02-18
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Publication No.: US20150235892A1Publication Date: 2015-08-20
- Inventor: Yunxiao Gao , Cherngye Hwang , Xavier C. Lelong , Stefan Maat , Bruce W. Saxton , Charles G. Seegel, III , Yong Shen
- Applicant: HGST Netherlands B.V.
- Main IPC: H01L21/687
- IPC: H01L21/687

Abstract:
A wafer clamp according to one embodiment includes an outer ring, and at least three members extending inwardly from the outer ring, each of the members having a contact area for engaging a wafer. A system includes a structure having at least one ring, each ring being for receiving a wafer, and a wafer clamp configured to clamp a wafer to each ring, the wafer clamp having an outer ring, and at least three members extending inwardly from the outer ring, each of the members having a contact area for engaging a wafer.
Information query
IPC分类: