Invention Grant
- Patent Title: Method for producing a semiconductor wafer
- Patent Title (中): 半导体晶片的制造方法
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Application No.: US12902558Application Date: 2010-10-12
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Publication No.: US08685270B2Publication Date: 2014-04-01
- Inventor: Juergen Schwandner , Thomas Buschhardt , Diego Feijoo , Michael Kerstan , Georg Pietsch , Guenter Schwab
- Applicant: Juergen Schwandner , Thomas Buschhardt , Diego Feijoo , Michael Kerstan , Georg Pietsch , Guenter Schwab
- Applicant Address: DE Munich
- Assignee: Siltronic AG
- Current Assignee: Siltronic AG
- Current Assignee Address: DE Munich
- Agency: Leydig, Voit & Mayer, Ltd.
- Priority: DE102009051008 20091028
- Main IPC: C03C15/00
- IPC: C03C15/00 ; C03C25/68 ; B44C1/22 ; H01L21/302 ; H01L21/461

Abstract:
A method for producing a semiconductor wafer sliced from a single crystal includes rounding an edge using a grinding disk containing abrasives with an average grain size of 20.0-60.0 μm. A first simultaneous double-side material-removing process is performed wherein the semiconductor wafers are processed between two rotating ring-shaped working disks, each working disk having a working layer containing abrasives having an average grain size of 5.0-20.0 μm, wherein the semiconductor wafer is placed in a cutout in one of a plurality of carriers rotatable by a rolling apparatus such that the semiconductor wafer lies in a freely movable manner in the carrier and the wafer is movable on a cycloidal trajectory. A second simultaneous double-side material-removing process is performed including processing the semiconductor wafers between two rotating ring-shaped working disks, each working disk having a working layer containing abrasives having an average grain size of 0.5-15.0 μm.
Public/Granted literature
- US20110097975A1 METHOD FOR PRODUCING A SEMICONDUCTOR WAFER Public/Granted day:2011-04-28
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