Invention Grant
- Patent Title: Method for wafer separation
- Patent Title (中): 晶圆分离方法
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Application No.: US13868554Application Date: 2013-04-23
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Publication No.: US08987058B2Publication Date: 2015-03-24
- Inventor: Yu-Peng Tsai , Wen-Hsiung Lu , Cheng-Ting Chen , Hsien-Wei Chen , Ming-Da Cheng , Chung-Shi Liu
- Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.
- Applicant Address: TW Hsin-Chu
- Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
- Current Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
- Current Assignee Address: TW Hsin-Chu
- Agency: Slater & Matsil, L.L.P.
- Main IPC: H01L21/00
- IPC: H01L21/00 ; H01L23/544 ; H01L21/78 ; H01L23/28

Abstract:
A plurality of macro and micro alignment marks may be formed on a wafer. The macro alignment marks may be formed in pairs at opposite edges of the wafer. The micro alignment marks may be formed to align to streets on the wafer along a first and second direction. A molding compound may be formed on the wafer. The macro alignment marks may be exposed from the molding compound. A pair of the micro alignment marks may be exposed from the molding compound at opposite ends of the streets along the first and the second direction. The wafer may be aligned to a dicing tool using pairs of the macro alignment marks. The dicing tool may be aligned to the streets using pairs of the micro alignment marks. The wafer may be diced using successive pairs of micro alignment marks along the first and second direction.
Public/Granted literature
- US20140264885A1 Apparatus and Method for Wafer Separation Public/Granted day:2014-09-18
Information query
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