- 专利标题: Hybrid wafer dicing approach using a multiple pass laser scribing process and plasma etch process
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申请号: US15918673申请日: 2018-03-12
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公开(公告)号: US10535561B2公开(公告)日: 2020-01-14
- 发明人: Jungrae Park , James S. Papanu , Ajay Kumar , Wei-Sheng Lei
- 申请人: APPLIED MATERIALS, INC.
- 申请人地址: US CA Santa Clara
- 专利权人: Applied Materials, Inc.
- 当前专利权人: Applied Materials, Inc.
- 当前专利权人地址: US CA Santa Clara
- 代理机构: Schwabe, Williamson & Wyatt, P.C.
- 主分类号: H01L21/78
- IPC分类号: H01L21/78 ; H01L21/263 ; H01L21/268 ; H01L21/3065 ; H01L21/308 ; B23K10/00 ; B23K26/53 ; H01L21/67 ; H01L21/311 ; B23K101/40
摘要:
Methods of dicing semiconductor wafers are described. In an example, a method of dicing a semiconductor wafer having integrated circuits thereon involves forming a mask above the semiconductor wafer, the mask composed of a layer covering and protecting the integrated circuits. The mask is then patterned with a multiple pass laser scribing process to provide a patterned mask with gaps exposing regions of the semiconductor wafer between the integrated circuits, the multiple pass laser scribing process including a first pass along a first edge scribing path, a second pass along a center scribing path, a third pass along a second edge scribing path, a fourth pass along the second edge scribing path, a fifth pass along the center scribing path, and a sixth pass along the first edge scribing path. The semiconductor wafer is then plasma etched through the gaps in the patterned mask to singulate the integrated circuits.
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