Invention Grant
- Patent Title: Hybrid wafer dicing approach using a multiple pass laser scribing process and plasma etch process
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Application No.: US15918673Application Date: 2018-03-12
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Publication No.: US10535561B2Publication Date: 2020-01-14
- Inventor: Jungrae Park , James S. Papanu , Ajay Kumar , Wei-Sheng Lei
- Applicant: APPLIED MATERIALS, INC.
- Applicant Address: US CA Santa Clara
- Assignee: Applied Materials, Inc.
- Current Assignee: Applied Materials, Inc.
- Current Assignee Address: US CA Santa Clara
- Agency: Schwabe, Williamson & Wyatt, P.C.
- Main IPC: H01L21/78
- IPC: H01L21/78 ; H01L21/263 ; H01L21/268 ; H01L21/3065 ; H01L21/308 ; B23K10/00 ; B23K26/53 ; H01L21/67 ; H01L21/311 ; B23K101/40

Abstract:
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.
Public/Granted literature
- US20190279902A1 HYBRID WAFER DICING APPROACH USING A MULTIPLE PASS LASER SCRIBING PROCESS AND PLASMA ETCH PROCESS Public/Granted day:2019-09-12
Information query
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