WAFER EDGE CONDITIONING FOR THINNED WAFERS
    5.
    发明申请
    WAFER EDGE CONDITIONING FOR THINNED WAFERS 有权
    用于薄膜波纹的边缘调节

    公开(公告)号:US20120241916A1

    公开(公告)日:2012-09-27

    申请号:US13053803

    申请日:2011-03-22

    IPC分类号: H01L29/02 H01L21/302

    CPC分类号: H01L21/02021

    摘要: The present invention relates to a method for minimizing breakage of wafers during or after a wafer thinning process. A method of forming a rounded edge to the portion of a wafer remaining after surface grinding process is provided. The method comprises providing a semiconductor wafer having an edge and forming a recess in the edge of the wafer using any suitable mechanical or chemical process. The method further comprises forming a substantially continuous curved shape for at least the edge of the wafer located above the recess. Advantageously, the shape of the wafer is formed prior to the backside grind process to prevent problems caused by the otherwise presence of a sharp edge during the backside grind process.

    摘要翻译: 本发明涉及一种在晶圆薄化过程中或之后使晶片断裂最小化的方法。 提供了在表面研磨处理之后残留的晶片部分形成圆形边缘的方法。 该方法包括提供具有边缘的半导体晶片,并且使用任何合适的机械或化学过程在晶片的边缘中形成凹陷。 该方法还包括形成至少位于凹部上方的晶片的边缘的基本连续的弯曲形状。 有利地,在背面研磨处理之前形成晶片的形状,以防止在背面研磨过程期间另外存在锋利边缘引起的问题。

    Wafer edge conditioning for thinned wafers
    8.
    发明授权
    Wafer edge conditioning for thinned wafers 有权
    用于薄晶片的晶圆边缘调节

    公开(公告)号:US09105465B2

    公开(公告)日:2015-08-11

    申请号:US13053803

    申请日:2011-03-22

    IPC分类号: H01L29/02 H01L21/02

    CPC分类号: H01L21/02021

    摘要: The present invention relates to a method for minimizing breakage of wafers during or after a wafer thinning process. A method of forming a rounded edge to the portion of a wafer remaining after surface grinding process is provided. The method comprises providing a semiconductor wafer having an edge and forming a recess in the edge of the wafer using any suitable mechanical or chemical process. The method further comprises forming a substantially continuous curved shape for at least the edge of the wafer located above the recess. Advantageously, the shape of the wafer is formed prior to the backside grind process to prevent problems caused by the otherwise presence of a sharp edge during the backside grind process.

    摘要翻译: 本发明涉及一种在晶圆薄化过程中或之后使晶片断裂最小化的方法。 提供了在表面研磨处理之后残留的晶片部分形成圆形边缘的方法。 该方法包括提供具有边缘的半导体晶片,并且使用任何合适的机械或化学过程在晶片的边缘中形成凹陷。 该方法还包括形成至少位于凹部上方的晶片的边缘的基本连续的弯曲形状。 有利地,在背面研磨处理之前形成晶片的形状,以防止在背面研磨过程期间另外存在锋利边缘引起的问题。