- ISBN: 9780470827802 | 0470827807
- Cover: Hardcover
- Copyright: 5/17/2011
Sheng Liu is a ChangJiang Professor of Mechanical Engineering at Huazhong University of Science and Technology. He holds a dual appointment at Wuhan National Laboratory for Optoelectronics, and has served as tenured faculty at Wayne State University. He has over 14 years experience in LED/MEMS/IC packaging and extensive experience in consulting with many leading multi-national and Chinese companies. Liu was awarded the White House/NSF Presidential Faculty Fellowship in 1995, ASME Young Engineer Award in 1996, and China NSFC Overseas Young Scientist in 1999. He is currently one of the 11 National Committee Members in LED under Ministry of Science and Technology. He obtained a Ph.D. from Stanford in 1992, and got MS and BS in flight vehicle design, Nanjing University of Aeronautics and Astronautics, and he had three years industrial experience in China and USA. He has filed more than 70 patents in China and the USA, and has published more than 300 technical articles.
Yong Liu is a global team leader of electrical, thermal-mechanical modeling and analysis at Fairchild Semiconductor Corp in South Portland, Maine. His main interest areas are IC packaging, modeling and simulation, reliability and material characterization. He has previously served as Professor at Zhejiang University of Technology, and has worked as an opto package engineer at Nortel Networks in Boston. Liu has co-authored over 100 papers in journals and conferences, has filed over 40 US patents in the area of IC packaging and power device, and has won numerous awards and fellowships in academia and industry: the Fairchild President Award, Fairchild Key Technologist, Fairchild New Product Innovation Award, the Alexander von Humboldt European Fellowship for study at Braunschweig University of Technology and University of Cambridge. Liu holds a PhD from Nanjing University of Science and Technology.
Foreword | p. xiii |
Foreword | |
Preface | p. xvii |
Acknowledgments | p. xix |
About the Authors xxi | |
Mechanics and Modeling | p. 1 |
Constitutive Models and Finite Element Method | p. 3 |
Constitutive Models for Typical Materials | p. 3 |
Linear Elasticity | p. 3 |
Elastic-Visco-Plasticity | p. 5 |
Finite Element Method | p. 9 |
Basic Finite Element Equations | p. 9 |
Nonlinear Solution Methods | p. 12 |
Advanced Modeling Techniques in Finite Element Analysis | p. 14 |
Finite Element Applications in Semiconductor Packaging Modeling | p. 17 |
Chapter Summary | p. 18 |
References | p. 19 |
Material and Structural Testing for Small Samples | p. 21 |
Material Testing for Solder Joints | p. 21 |
Specimens | p. 21 |
A Thermo-Mechanical Fatigue Tester | p. 23 |
Tensile Test | p. 24 |
Creep Test | p. 26 |
Fatigue Test | p. 31 |
Scale Effect of Packaging Materials | p. 32 |
Specimens | p. 33 |
Experimental Results and Discussions | p. 34 |
Thin Film Scale Dependence for Polymer Thin Films | p. 39 |
Two-Ball Joint Specimen Fatigue Testing | p. 41 |
Chapter Summary | p. 41 |
References | p. 43 |
Constitutive and User-Supplied Subroutines for Solders Considering Damage Evolution | p. 45 |
Constitutive Model for Tin-Lead Solder Joint | p. 45 |
Model Formulation | p. 45 |
Determination of Material Constants | p. 47 |
Model Prediction | p. 49 |
Visco-Elastic-Plastic Properties and Constitutive Modeling of Underfills | p. 50 |
Constitutive Modeling of Underfills | p. 50 |
Identification of Material Constants | p. 55 |
Model Verification and Prediction | p. 55 |
A Damage Coupling Framework of Unified Viscoplasticity for the Fatigue of Solder Alloys | p. 56 |
Damage Coupling Thermodynamic Framework | p. 56 |
Large Deformation Formulation | p. 62 |
Identification of the Material Parameters | p. 63 |
Creep Damage | p. 66 |
User-Supplied Subroutines for Solders Considering Damage Evolution | p. 67 |
Return-Mapping Algorithm and FEA Implementation | p. 67 |
Advanced Features of the Implementation | p. 69 |
Applications of the Methodology | p. 71 |
Chapter Summary | p. 76 |
References | p. 76 |
Accelerated Fatigue Life Assessment Approaches for Solders in Packages | p. 79 |
Life Prediction Methodology | p. 79 |
Strain-Based Approach | p. 80 |
Energy-Based Approach | p. 82 |
Fracture Mechanics-Based Approach | p. 82 |
Accelerated Testing Methodology | p. 82 |
Failure Modes via Accelerated Testing Bounds | p. 83 |
Isothermal Fatigue via Thermal Fatigue | p. 83 |
Constitutive Modeling Methodology | p. 83 |
Separated Modeling via Unified Modeling | p. 83 |
Viscoplasticity with Damage Evolution | p. 84 |
Solder Joint Reliability via FEA | p. 84 |
Life Prediction of Ford Joint Specimen | p. 84 |
Accelerated Testing: Insights from Life Prediction | p. 87 |
Fatigue Life Prediction of a PQFP Package | p. 91 |
Life Prediction of Flip-Chip Packages | p. 93 |
Fatigue Life Prediction with and without Underfill | p. 93 |
Life Prediction of Flip-Chips without Underfill via Unified and Separated Constitutive Modeling | p. 95 |
Life Prediction of Flip-Chips under Accelerated Testing | p. 96 |
Chapter Summary | p. 99 |
References | p. 99 |
Multi-Physics and Multi-Scale Modeling | p. 103 |
Multi-Physics Modeling | p. 103 |
Direct-Coupled Analysis | p. 103 |
Sequential Coupling | p. 104 |
Multi-Scale Modeling | p. 106 |
Chapter Summary | p. 107 |
References | p. 108 |
Modeling Validation Tools | p. 109 |
Structural Mechanics Analysis | p. 109 |
Requirements of Experimental Methods for Structural Mechanics Analysis | p. 111 |
Whole Field Optical Techniques | p. 112 |
Thermal Strains Measurements Using Moire Interferometry | p. 113 |
Thermal Strains in a Plastic Ball Grid Array (PBGA) Interconnection | p. 113 |
Real-Time Thermal Deformation Measurements Using Moire Interferometry | p. 116 |
In-Situ Measurements on Micro-Machined Sensors | p. 116 |
Micro-Machined Membrane Structure in a Chemical Sensor | p. 116 |
In-Situ Measurement Using Twyman-Green Interferometry | p. 118 |
Membrane Deformations due to Power Cycles | p. 118 |
Real-Time Measurements Using Speckle Interferometry | p. 119 |
Image Processing and Computer Aided Optical Techniques | p. 120 |
Image Processing for Fringe Analysis | p. 120 |
Phase Shifting Technique for Increasing Displacement Resolution | p. 120 |
Real-Time Thermal-Mechanical Loading Tools | p. 123 |
Micro-Mechanical Testing | p. 123 |
Environmental Chamber | p. 124 |
Warpage Measurement Using PM-SM System | p. 124 |
Shadow Moire and Project Moire Setup | p. 125 |
Warpage Measurement of a BGA, Two Crowded PCBs | p. 127 |
Chapter Summary | p. 131 |
References | p. 131 |
Application of Fracture Mechanics | p. 135 |
Fundamental of Fracture Mechanics | p. 135 |
Energy Release Rate | p. 136 |
J Integral | p. 138 |
Interfacial Crack | p. 139 |
Bulk Material Cracks in Electronic Packages | p. 141 |
Background | p. 141 |
Crack Propagation in Ceramic/Adhesive/Glass System | p. 142 |
Results | p. 146 |
Interfacial Fracture Toughness | p. 148 |
Background | p. 148 |
Interfacial Fracture Toughness of Flip-Chip Package between Passivated Silicon Chip and Underfill | p. 150 |
Three-Dimensional Energy Release Rate Calculation | p. 159 |
Fracture Analysis | p. 160 |
Results and Comparison | p. 160 |
Chapter Summary | p. 165 |
References | p. 165 |
Concurrent Engineering for Microelectronics | p. 169 |
Design Optimization | p. 169 |
New Developments and Trends in Integrated Design Tools | p. 179 |
Chapter Summary | p. 183 |
References | p. 183 |
Modeling in Microelectronic Packaging and Assembly | p. 185 |
Typical IC Packaging and Assembly Processes | p. 187 |
Wafer Process and Thinning | p. 188 |
Wafer Process Stress Models | p. 188 |
Thin Film Deposition | p. 189 |
Backside Grind for Thinning | p. 191 |
Die Pick Up | p. 193 |
Die Attach | p. 198 |
Material Constitutive Relations | p. 200 |
Modeling and Numerical Strategies | p. 201 |
FEA Simulation Result of Flip-Chip Attach | p. 204 |
Wire Bonding | p. 206 |
Assumption, Material Properties and Method of Analysis | p. 207 |
Wire Bonding Process with Different Parameters | p. 208 |
Impact of Ultrasonic Amplitude | p. 210 |
Impact of Ultrasonic Frequency | p. 212 |
Impact of Friction Coefficients between Bond Pad and FAB | p. 214 |
Impact of Different Bond Pad Thickness | p. 217 |
Impact of Different Bond Pad Structures | p. 217 |
Modeling Results and Discussion for Cooling Substrate Temperature after Wire Bonding | p. 221 |
Molding | p. 223 |
Molding Flow Simulation | p. 223 |
Curing Stress Model | p. 230 |
Molding Ejection and Clamping Simulation | p. 236 |
Leadframe Forming/Singulation | p. 241 |
Euler Forward versus Backward Solution Method | p. 242 |
Punch Process Setup | p. 242 |
Punch Simulation by ANSYS Implicit | p. 244 |
Punch Simulation by LS-DYNA | p. 246 |
Experimental Data | p. 248 |
Chapter Summary | p. 252 |
References | p. 252 |
Opto Packaging and Assembly | p. 255 |
Silicon Substrate Based Opto Package Assembly | p. 255 |
State of the Technology | p. 255 |
Monte Carlo Simulation of Bonding/Soldering Process | p. 256 |
Effect of Matching Fluid | p. 256 |
Effect of the Encapsulation | p. 258 |
Welding of a Pump Laser Module | p. 258 |
Module Description | p. 258 |
Module Packaging Process Flow | p. 258 |
Radiation Heat Transfer Modeling for Hermetic Sealing Process | p. 259 |
Two-Dimensional FEA Modeling for Hermetic Sealing | p. 260 |
Cavity Radiation Analyses Results and Discussions | p. 262 |
Chapter Summary | p. 264 |
References | p. 264 |
MEMS and MEMS Package Assembly | p. 267 |
A Pressure Sensor Packaging (Deformation and Stress) | p. 267 |
Piezoresistance in Silicon | p. 268 |
Finite Element Modeling and Geometry | p. 270 |
Material Properties | p. 270 |
Results and Discussion | p. 271 |
Mounting of Pressure Sensor | p. 273 |
Mounting Process | p. 273 |
Modeling | p. 274 |
Results | p. 276 |
Experiments and Discussions | p. 277 |
Thermo-Fluid Based Accelerometer Packaging | p. 279 |
Device Structure and Operation Principle | p. 279 |
Linearity Analysis | p. 280 |
Design Consideration | p. 284 |
Fabrication | p. 285 |
Experiment | p. 285 |
Plastic Packaging for a Capacitance Based Accelerometer | p. 288 |
Micro-Machined Accelerometer | p. 289 |
Wafer-Level Packaging | p. 290 |
Packaging of Capped Accelerometer | p. 296 |
Tire Pressure Monitoring System (TPMS) Antenna | p. 303 |
Test of TPMS System with Wheel Antenna | p. 304 |
3D Electromagnetic Modeling of Wheel Antenna | p. 306 |
Stress Modeling of Installed TPMS | p. 307 |
Thermo-Fluid Based Gyroscope Packaging | p. 310 |
Operating Principle and Design | p. 312 |
Analysis of Angular Acceleration Coupling | p. 313 |
Numerical Simulation and Analysis | p. 314 |
Microjets for Radar and LED Cooling | p. 316 |
Microjet Array Cooling System | p. 319 |
Preliminary Experiments | p. 320 |
Simulation and Model Verification | p. 322 |
Comparison and Optimization of Three Microjet Devices | p. 324 |
Air Flow Sensor | p. 327 |
Operation Principle | p. 329 |
Simulation of Flow Conditions | p. 331 |
Simulation of Temperature Field on the Sensor Chip Surface | p. 333 |
Direct Numerical Simulation of Particle Separation by Direct Current Dielectrophoresis | p. 335 |
Mathematical Model and Implementation | p. 335 |
Results and Discussion | p. 339 |
Modeling of Micro-Machine for Use in Gastrointestinal Endoscopy | p. 341 |
Methods | p. 343 |
Results and Discussion | p. 348 |
Chapter Summary | p. 353 |
References | p. 354 |
System in Package (SIP) Assembly | p. 361 |
Assembly Process of Side by Side Placed SIP | p. 361 |
Multiple Die Attach Process | p. 361 |
Cooling Stress and Warpage Simulation after Molding | p. 365 |
Stress Simulation in Trim Process | p. 366 |
Impact of the Nonlinear Materials Behaviors on the Flip-Chip Packaging Assembly Reliability | p. 369 |
Finite Element Modeling and Effect of Material Models | p. 371 |
Experiment | p. 374 |
Results and Discussions | p. 375 |
Stacked Die Flip-Chip Assembly Layout and the Material Selection | p. 381 |
Finite Element Model for the Stack Die FSBGA | p. 383 |
Assembly Layout Investigation | p. 385 |
Material Selection | p. 389 |
Chapter Summary | p. 393 |
References | p. 393 |
Modeling in Microelectronic Package Reliability and Test | p. 395 |
Wafer Probing Test | p. 397 |
Probe Test Model | p. 397 |
Parameter Probe Test Modeling Results and Discussions | p. 400 |
Impact of Probe Tip Geometry Shapes | p. 401 |
Impact of Contact Friction | p. 403 |
Impact of Probe Tip Scrub | p. 403 |
Comparison Modeling: Probe Test versus Wire Bonding | p. 406 |
Design of Experiment (DOE) Study and Correlation of Probing Experiment and FEA Modeling | p. 409 |
Chapter Summary | p. 411 |
References | p. 412 |
Power and Thermal Cycling, Solder Joint Fatigue Life | p. 413 |
Die Attach Process and Material Relations | p. 413 |
Power Cycling Modeling and Discussion | p. 413 |
Thermal Cycling Modeling and Discussion | p. 420 |
Methodology of Solder Joint Fatigue Life Prediction | p. 426 |
Fatigue Life Prediction of a Stack Die Flip-Chip on Silicon (FSBGA) | p. 427 |
Effect of Cleaned and Non-Cleaned Situations on the Reliability of Flip-Chip Packages | p. 434 |
Finite Element Models for the Clean and Non-Clean Cases | p. 435 |
Model Evaluation | p. 435 |
Reliability Study for the Solder Joints | p. 437 |
Chapter Summary | p. 438 |
References | p. 439 |
Passivation Crack Avoidance | p. 441 |
Ratcheting-Induced Stable Cracking: A Synopsis | p. 441 |
Ratcheting in Metal Films | p. 445 |
Cracking in Passivation Films | p. 447 |
Design Modifications | p. 452 |
Chapter Summary | p. 452 |
References | p. 452 |
Drop Test | p. 453 |
Controlled Pulse Drop Test | p. 453 |
Simulation Methods | p. 454 |
Simulation Results | p. 457 |
Parametric Study | p. 458 |
Free Drop | p. 460 |
Simulated Drop Test Procedure | p. 460 |
Modeling Results and Discussion | p. 461 |
Portable Electronic Devices Drop Test and Simulation | p. 467 |
Test Set-Up | p. 467 |
Modeling and Simulation | p. 468 |
Results | p. 470 |
Chapter Summary | p. 470 |
References | p. 471 |
Electromigration | p. 473 |
Basic Migration Formulation and Algorithm | p. 473 |
Electromigration Examples from IC Device and Package | p. 477 |
A Sweat Structure | p. 477 |
A Flip-Chip CSP with Solder Bumps | p. 480 |
Chapter Summary | p. 496 |
References | p. 497 |
Popcorning in Plastic Packages | p. 499 |
Statement of Problem | p. 499 |
Analysis | p. 501 |
Results and Comparisons | p. 503 |
Behavior of a Delaminated Package due to Pulsed Heating-Verification | p. 503 |
Convergence of the Total Strain Energy Release Rate | p. 504 |
Effect of Delamination Size and Various Processes for a Thick Package | p. 505 |
Effect of Moisture Expansion Coefficient | p. 514 |
Chapter Summary | p. 515 |
References | p. 516 |
Modern Modeling and Simulation Methodologies: Application to Nano Packaging | p. 519 |
Classical Molecular Dynamics | p. 521 |
General Description of Molecular Dynamics Method | p. 521 |
Mechanism of Carbon Nanotube Welding onto the Metal | p. 522 |
Computational Methodology | p. 522 |
Results and Discussion | p. 523 |
Applications of Car-Parrinello Molecular Dynamics | p. 530 |
Car-Parrinello Simulation of Initial Growth Stage of Gallium Nitride on Carbon Nanotube | p. 530 |
Effects of Mechanical Deformation on Outer Surface Reactivity of Carbon Nanotubes | p. 534 |
Adsorption Configuration of Magnesium on Wurtzite Gallium Nitride Surface Using First-Principles Calculations | p. 539 |
Nano-Welding by RF Heating | p. 544 |
Chapter Summary | p. 548 |
References | p. 548 |
Index | p. 553 |
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