Invention Grant
- Patent Title: Wafer dicing from wafer backside and front side
- Patent Title (中): 从晶片背面和正面进行晶片切割
-
Application No.: US14103534Application Date: 2013-12-11
-
Publication No.: US09224650B2Publication Date: 2015-12-29
- Inventor: Wei-Sheng Lei , Brad Eaton , Ajay Kumar
- Applicant: Wei-Sheng Lei , Brad Eaton , Ajay Kumar
- Applicant Address: US CA Santa Clara
- Assignee: Applied Materials, Inc.
- Current Assignee: Applied Materials, Inc.
- Current Assignee Address: US CA Santa Clara
- Agency: Blakely Sokoloff Taylor Zafman LLP
- Main IPC: H01L21/00
- IPC: H01L21/00 ; H01L21/46 ; H01L21/30 ; H01L21/78 ; H01L21/308 ; B23K26/32 ; B23K26/36 ; B23K26/40 ; H01L21/311 ; H01L21/3213

Abstract:
Approaches for backside laser scribe plus front side laser scribe and plasma etch dicing of a wafer or substrate are described. For example, a method of dicing a semiconductor wafer having a plurality of integrated circuits on a front side thereof and metallization on a backside thereof involves patterning the metallization on the backside with a first laser scribing process to provide a first plurality of laser scribe lines on the backside. The method also involves forming a mask on the front side. The method also involves patterning, from the front side, the mask with a second laser scribing process to provide a patterned mask with a second plurality of scribe lines exposing regions of the semiconductor wafer between the integrated circuits, wherein the second plurality of scribe lines is aligned with the first plurality of scribe lines. The method also involves plasma etching the semiconductor wafer through the second plurality of scribe lines to singulate the integrated circuits.
Public/Granted literature
- US20150079761A1 Wafer Dicing from Wafer Backside and Front Side Public/Granted day:2015-03-19
Information query
IPC分类: