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    • 10. 发明公开
    • METHOD FOR REUSING REMOVED WAFER
    • VERFAHREN ZUR WIEDERVERWENDUNG EINES ENTFERNTEN WAFERS
    • EP2048697A1
    • 2009-04-15
    • EP07744943.7
    • 2007-06-08
    • Shin-Etsu Handotai Co., Ltd.
    • TAMURA, AkihikoOKI, Konomu
    • H01L21/02H01L21/26H01L21/304H01L21/322H01L27/12
    • H01L21/76254H01L21/02032H01L21/3223H01L21/3225
    • The present invention provides a method for reusing a delaminated wafer, which is a method for applying reprocessing that is at least polishing to a delaminated wafer 17 byproduced when manufacturing an SOI wafer based on an ion implantation delamination method and thereby again reusing the delaminated wafer 17 as a bond wafer 21 in an SOI wafer manufacturing process, wherein, at least, a CZ wafer 11 used as the bond wafer is a low-defect wafer whose entire surface is formed of an N region, and an RTA treatment is carried out in the reprocessing with respect to the delaminated wafer 17 at a higher temperature than a temperature in formation of a thermal oxide film 12 performed with respect to the bond wafer in the SOI wafer manufacturing process. As a result, there can be provided the method for reusing a delaminated wafer which does not induce a bonding failure or a reduction in quality of an SOI layer even if the delaminated wafer byproduced when the CZ wafer having a large diameter of 200 mm or above is used as the bond wafer to fabricate the SOI wafer based on the ion implantation delamination method is repeatedly reused as the bond wafer.
    • 本发明提供了一种重复使用分层晶片的方法,其是通过在基于离子注入分层方法制造SOI晶片时通过产生的至少抛光到再分散晶片17的再处理方法,从而再次使用分层晶片17 作为SOI晶片制造工序中的接合晶片21,其中,至少用作接合晶片的CZ晶片11为全面由N区形成的低缺陷晶片,并且RTA处理在 在相对于SOI晶片制造工艺中相对于接合晶片执行的热氧化膜12的形成温度高于相对于分层晶片17的再处理。 结果,即使在具有200mm以上的大直径的CZ晶片时,即使分解的晶片被副产生,也可以提供再次使用不会引起接合失败或SOI层的质量下降的分层晶片的方法 用作接合晶片以制造SOI晶片为基础的离子注入分层方法被重复重复使用作为接合晶片。