Title
3D chip-stacking technology with through-silicon vias and low-volume lead-free interconnections
Abstract
Three-dimensional (3D) integration using through-silicon vias (TSVs) and low-volume lead-free solder interconnects allows the formation of high signal bandwidth, fine pitch, and short-distance interconnections in stacked dies. There are several approaches for 3D chip stacking including chip to chip, chip to wafer, and wafer to wafer. Chip-to-chip integration and chip-to-wafer integration offer the ability to stack known good dies, which can lead to higher yields without integrated redundancy. In the future, with structure and process optimization, wafer-to-wafer integration may provide an ultimate solution for the highest manufacturing throughput assuming a high yield and minimal loss of good dies and wafers. In the near term, chip-to-chip and chip-to-wafer integration may offer high yield, high flexibility, and high performance with added time-to-market advantages. In this work, results are reported for 3D integration after using a chip-to-wafer assembly process using 3D chip-stacking technology and fine-pitch interconnects with lead-free solder. Stacks of up to six dies were assembled and characterized using lead-free solder interconnections that were less than 6 µm in height. The average resistance of the TSV including the lead-free solder interconnect was as low as 21 mΩ.
Year
DOI
Venue
2008
10.1147/JRD.2008.5388567
IBM Journal of Research and Development
Keywords
Field
DocType
chip-to-chip integration,chip-to-wafer integration offer,through-silicon vias,low-volume lead-free interconnection,wafer-to-wafer integration,lead-free solder interconnection,high signal bandwidth,chip-stacking technology,chip-to-wafer integration,high yield,high flexibility,high performance,lead-free solder,through silicon via,chip
Wafer,Flip chip,System on a chip,Computer science,Electronic engineering,Chip,Soldering,Die (manufacturing),Three-dimensional integrated circuit,Interconnection
Journal
Volume
Issue
ISSN
52
6
0018-8646
Citations 
PageRank 
References 
18
2.53
5
Authors
13
Name
Order
Citations
PageRank
K. Sakuma111325.43
P. S. Andry210622.38
C. K. Tsang310622.38
S. L. Wright4182.53
Dang, B.511022.83
C. S. Patel618822.62
B. C. Webb710622.38
J. Maria8182.53
E. J. Sprogis912824.81
S. K. Kang10182.87
R. J. Polastre119718.50
R. R. Horton129918.83
J. U. Knickerbocker1312431.11