fundamentals of multichip modules and packaging · pdf filesystem packaging methods (a)...
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Fundamentals of
Multichip Modulesand Packaging Technologies
MCM
• Advanced VLSI Packaging (AVP)• MCM-D• MCM-C• MCM-L
System Packaging Methods
(a) System-on-a Chip or Wafer Scale Integration
(b) Multichip Module
(c) Single Chip Packagingv= velocity of Propagation C = Speed of LightE= Relative Dielectric Constant
Multi-chip Module
4
AT&T Bell Labs.1983-1988.
Schematic Representation of Multi-layered Thin–Film Polymide Substrate (MCM-D)
Number of Layers Versus effective Trace Density for Various Multichip Module Substrate Technologies and Trace Pitches (line plus gap in mils.)
The Penalty Factor is assumed to be less than 10%.]
MCM Fractional Yield as a Function of the KGD Probability
KGD = Known Good Die
Motherboard for iPhone 4
MCM in 1987
A4 in 2010
Xilinx Virtex 7 with 2.5D tiling, 2011.
Deep Reactive Ion Etching (RIE)
Case Western Reserve Univ. MEMS Website;http://mems.cwru.edu/
Advanced Micro Machines Website;http://www.memslink.com/
DARPA Microsystems Technology Office, MEMS Website; http://www.darpa.mil/MTO/MEMS/
© V. M. Bright and K. Ishikawa, 2001
Why 2.5D Packaging?
Xilinx calls this assembly “SSI” (stacked system interconnect) and this approach to large-FPGA assembly provides two big benefits according to Liam Madden, the Xilinx corporate VP of FPGA development and silicon technology. “We can get many more connections within the silicon than you can with a system-in-package. [There are “more than 10,000 routing connections between FPGA slices.] But the biggest advantage of this approach is power savings. Because we are using chip interconnect to connect the dice, it is much more economical in power than connecting dice through big traces, through packages or through circuit boards,” says Madden in the Xcell Journal article.
MCM
• Advanced VLSI Packaging (AVP)• MCM-D• MCM-C• MCM-L
Schematic Representation of Multi-layered Thin–Film Polymide Substrate (MCM-D)
MCM
• Advanced VLSI Packaging (AVP)• MCM-D• MCM-C• MCM-L
Thermal Conduction Module (IBM 3081)
500 WattsWater-cooled
16
Thermal Conduction Module
17
Schematic Representation of Low Temperature, Co-fired Ceramic (LTCC) MCM
The Improvement of Wire Length and Number of Connections For IBM’s Thermal Conduction Module (an) MCM Versus the Same System
Implemented in Single Chip Packages
Line Width Versus Packaging Efficiency For Various Packing Styles
Single chip module
System on packagesystem on chip
Chip area/Substrate area
MCM
• Advanced VLSI Packaging (AVP)• MCM-D• MCM-C• MCM-L
Examples of Multi-Chip Module
Central Processing
Unit
Individuality Packaged
Microprocessor such as those
used in a Personal Computer
The Major Steps in theFabrication of Multi-layer PWB ’s
23
A Typical Printed Wiring Board Configuration
24
Production of PWB Laminates
25
Schematic Representation of a Built–up MCM-L
26
PCB for iPhone 4
27
MCM Relative Cost Versus Module I/O for the Various MCM Technologies
Motherboard for iPhone 4
MCM in 1987
A4 in 2010
Xilinx Virtex 7, 2011
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