Invention Grant
- Patent Title: Low cost die-to-wafer alignment/bond for 3d IC stacking
- Patent Title (中): 3d IC堆叠的低成本芯片对晶圆对准/焊接
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Application No.: US12236967Application Date: 2008-09-24
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Publication No.: US08796073B2Publication Date: 2014-08-05
- Inventor: Shiqun Gu , Thomas R. Toms
- Applicant: Shiqun Gu , Thomas R. Toms
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agent Sam Talpalatsky; Nicholas J. Pauley; Joseph Agusta
- Main IPC: H01L21/00
- IPC: H01L21/00

Abstract:
The cost associated with alignment in a stacked IC device can be reduced by aligning multiple die instead of a single die during the alignment step. In one embodiment, the alignment structures are placed in the scribe line instead of within the die itself. Aligning four die instead of one eliminates the need for as many alignment indicators and thus more silicon on the wafer can be used for active areas. In addition, this method allows for yield improvement through binning of dies having the same yield configuration.
Public/Granted literature
- US20100075460A1 Low Cost Die-To-Wafer Alignment/Bond For 3d IC Stacking Public/Granted day:2010-03-25
Information query
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