2017 18th International Conference on Electronic Packaging Technology (ICEPT)最新文献

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Chip-scale scalar atomic magnetometer operating in geomagnetic environment 在地磁环境下工作的芯片级标量原子磁强计
2017 18th International Conference on Electronic Packaging Technology (ICEPT) Pub Date : 2017-08-01 DOI: 10.1109/ICEPT.2017.8046551
Pang Zhihua, Shang Jintang, Lu Lin, J. Yu
{"title":"Chip-scale scalar atomic magnetometer operating in geomagnetic environment","authors":"Pang Zhihua, Shang Jintang, Lu Lin, J. Yu","doi":"10.1109/ICEPT.2017.8046551","DOIUrl":"https://doi.org/10.1109/ICEPT.2017.8046551","url":null,"abstract":"Chip-scale scalar atomic magnetometers (CSAMs) generally measure the magnitude of the magnetic field independent of orientation. In most cases CSAM can achieve high sensitivity (pT/Hz1/2) in the magnetic field ranged from 1000nT–5000nT. In our previous presentation in ECTC 2016, CSAMs were demonstrated with a considerable sensitivity of 40pT/Hz1/2 in the magnetic field of 4000nT. However, some applications including geomagnetic mapping, geomagnetic anomalies require CSAM operating on the condition of geomagnetic environment, 20000nT–100000nT. CSAM working in geomagnetic environment remains a challenge for its low sensitivity. This paper presents a novel design of CSAM working in 20000nT–100000nT as well as its system integration. MEMS and system integration technology have been used to demonstrate the CSAM measuring the magnetic anomalies in geomagnetic environment. The details of the detection theorem and the fabrication methods of CSAM have been explored.","PeriodicalId":386197,"journal":{"name":"2017 18th International Conference on Electronic Packaging Technology (ICEPT)","volume":"2016 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114447403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Advanced interconnect and antenna-in-package design for millimeter-wave 5G communications 用于毫米波5G通信的先进互连和封装天线设计
2017 18th International Conference on Electronic Packaging Technology (ICEPT) Pub Date : 2017-08-01 DOI: 10.1109/ICEPT.2017.8046398
B. Wu
{"title":"Advanced interconnect and antenna-in-package design for millimeter-wave 5G communications","authors":"B. Wu","doi":"10.1109/ICEPT.2017.8046398","DOIUrl":"https://doi.org/10.1109/ICEPT.2017.8046398","url":null,"abstract":"This paper presents a high-gain millimeter-wave array antenna highly integrated on a single organic chip package. The multi-phased beam steering capability is enabled to reduce multipath fading and over-the-air applications around 30GHz. To improve antenna bandwidth, gain and radiation efficiency, a dual-patch antenna is built on a superstrate structure. A number of design attributes, such as patch, dipole, and slot sizes have been studied. Advanced interconnect between die and antennas in multi-layered dielectric is optimized for transceiver integration and packaging with minimal insertion loss and coupling between the antenna feed-lines. Good correlation is reached among measurement and full-wave electromagnetic simulations. System-level characterization of a mechanically assembled transceiver module is presented with antenna radiation patterns.","PeriodicalId":386197,"journal":{"name":"2017 18th International Conference on Electronic Packaging Technology (ICEPT)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121835525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Solidification microstructure of tin-based solder in the rapid cooling condition 快速冷却条件下锡基焊料的凝固组织
2017 18th International Conference on Electronic Packaging Technology (ICEPT) Pub Date : 2017-08-01 DOI: 10.1109/ICEPT.2017.8046604
Anna Zhang, Zheng Zhou, Liping Mo, Fengshun Wu, Hui Liu
{"title":"Solidification microstructure of tin-based solder in the rapid cooling condition","authors":"Anna Zhang, Zheng Zhou, Liping Mo, Fengshun Wu, Hui Liu","doi":"10.1109/ICEPT.2017.8046604","DOIUrl":"https://doi.org/10.1109/ICEPT.2017.8046604","url":null,"abstract":"Self-propagating exothermic reaction has been developed as a heat source to melt solder alloy during interconnection process for its high combustion heat and short duration. The solidification of solder alloy has occurred in a rapid cooling condition, which would be different from the situation of traditional reflow soldering. In this paper, the self-propagating exothermic reaction of Al/Ni multilayer foil was applied to heat the different types of tin-based solder alloys, the corresponding solidification microstructure has been observed with the focus on fusion zone and the interface between solder and Al/Ni multilayer foil. The result indicates that the thickness of fusion zone is within the range of 150.32∼233.10 µm and which is different in Sn, Sn42Bi58, Sn63Pb37 and SAC305 preforms. Moreover, the grains in fusion zone were refined and the unsteady IMCs with small size were generated in fusion zone.","PeriodicalId":386197,"journal":{"name":"2017 18th International Conference on Electronic Packaging Technology (ICEPT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121857909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Quantitative polynomial free energy based phase field model for void motion and evolution in Sn under thermal gradient 热梯度下锡中空穴运动与演化的定量多项式自由能相场模型
2017 18th International Conference on Electronic Packaging Technology (ICEPT) Pub Date : 2017-08-01 DOI: 10.1109/ICEPT.2017.8046720
Anil Kunwar, M. Tonks, Shengyan Shang, Xueguan Song, Yunpeng Wang, Haitao Ma
{"title":"Quantitative polynomial free energy based phase field model for void motion and evolution in Sn under thermal gradient","authors":"Anil Kunwar, M. Tonks, Shengyan Shang, Xueguan Song, Yunpeng Wang, Haitao Ma","doi":"10.1109/ICEPT.2017.8046720","DOIUrl":"https://doi.org/10.1109/ICEPT.2017.8046720","url":null,"abstract":"As the electronic packaging and fabrication industries for solar PV cells assembly or panels are making endeavours in using Pb-free solder joints, the reliability of these joints can be taken as an important research topic. Among several aspects, the control of void formation, growth and evolution in lead-free Sn-based solders can be achieved if the underlying mechanism for such phenomena can be modeled. This study employs a quantitative polynomial free energy based phase field method to model the motion and evolution of void in Sn material under thermal gradient. The effects of imposed temperature gradient to the overall migration rate and profile of the void has been assessed in the finite element model.","PeriodicalId":386197,"journal":{"name":"2017 18th International Conference on Electronic Packaging Technology (ICEPT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116605711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Electromigration simulation of flip chip CSP LED 倒装CSP LED的电迁移模拟
2017 18th International Conference on Electronic Packaging Technology (ICEPT) Pub Date : 2017-08-01 DOI: 10.1109/ICEPT.2017.8046641
Rui Ma, F. Qin, Jiajie Fan, Xuejun Fan, C. Qian
{"title":"Electromigration simulation of flip chip CSP LED","authors":"Rui Ma, F. Qin, Jiajie Fan, Xuejun Fan, C. Qian","doi":"10.1109/ICEPT.2017.8046641","DOIUrl":"https://doi.org/10.1109/ICEPT.2017.8046641","url":null,"abstract":"Chip scale package (CSP) as an advanced technology has been applied to LED lighting devices, besides electromigration (EM) in CSP under high current density has become a critical reliability issue for the future high density microelectronic packaging. In this paper, the thermal-electric-mechanical coupled analysis is performed by the flip-chip CSP LED multi-physical finite element model. Based on the atomic flux divergences (AFD) method, the position of void formation in the solder joints is predicted subsequently. Influences of the ambient temperature and applied current on the EM failure life of LEDs are investigated finally.","PeriodicalId":386197,"journal":{"name":"2017 18th International Conference on Electronic Packaging Technology (ICEPT)","volume":"222 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116834977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Reliability analysis of smartwatch 智能手表可靠性分析
2017 18th International Conference on Electronic Packaging Technology (ICEPT) Pub Date : 2017-08-01 DOI: 10.1109/ICEPT.2017.8046614
Yuk Ngang Zita Yip, Ze‐Lin Zhu, Y. Chan
{"title":"Reliability analysis of smartwatch","authors":"Yuk Ngang Zita Yip, Ze‐Lin Zhu, Y. Chan","doi":"10.1109/ICEPT.2017.8046614","DOIUrl":"https://doi.org/10.1109/ICEPT.2017.8046614","url":null,"abstract":"The reliability of electronics products has become a serious problem due to the increasingly harsh environmental conditions when the products are in use. Due to demand on greater performance and higher integration in microelectronic devices, the electronics industry has been seeking suitable components, packaging and cooling techniques to achieve low-cost and high-reliability. This paper presents the experimental verifications to analyze the effect of temperature and humidity on the electronic circuit as well as evaluating the device reliability, using Xiaomi Band 2 as a real case. It is found that 125°C has been a critical temperature for the smart watch, above which the sealed plastic case ruptured easily. However, 150°C has been found to be the temperature to burst the battery. Cold storage test with a temperature of − 70°C shows that low-temperature will only cause the smartwatch to hibernate, even for up to 400 hours, after which the device will be restored to work under a room temperature. Humidity has been found to be a crucial factor in damaging the device, which changes the rubber ring and plastic case into brittle and corrodes the interconnects on printed circuit board. Further investigation into the microstructure evolution of interconnects has found that the highly accelerated stress test has caused serious cracks in solder joints and electronic components, such as, resistors and capacitors. In short, the smartwatch can work under harsher environment than the designated environmental conditions in the product manual.","PeriodicalId":386197,"journal":{"name":"2017 18th International Conference on Electronic Packaging Technology (ICEPT)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128741847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
A novel copper-coated ceramic substrate prepared by nano thermocompression bonding 纳米热压键合制备新型铜涂层陶瓷衬底
2017 18th International Conference on Electronic Packaging Technology (ICEPT) Pub Date : 2017-08-01 DOI: 10.1109/ICEPT.2017.8046507
Yun Mou, Yang Peng, Hao-Chun Cheng, Ziliang Hao, Mingxiang Chen
{"title":"A novel copper-coated ceramic substrate prepared by nano thermocompression bonding","authors":"Yun Mou, Yang Peng, Hao-Chun Cheng, Ziliang Hao, Mingxiang Chen","doi":"10.1109/ICEPT.2017.8046507","DOIUrl":"https://doi.org/10.1109/ICEPT.2017.8046507","url":null,"abstract":"In this paper, we propose a feasible and prospective method to prepare copper-coated ceramic substrate by using nano thermo-compression bonding technology. Nanoporous copper (NPC) can be prepared by dealloying of Cu-Zn alloy system in L-tartaric acid solution. By controlling the concentration of L-tartaric acid solution and dealloying temperature, NPC presents good homogeneity and open bi-continuous interpenetrating ligament-channel microstructures with the average ligament size of 20 nm. In addition, copper-coated ceramic substrates using NPC are successfully prepared under the bonding pressure of 20MPa for 50min at 350°C in the N2 atmosphere resulted in excellent bonding qualities without voids in the bonding layer, the tensile strength reaches 9.2MPa. These testing results confirms that the copper-coated ceramic substrate prepared by nano thermocompression bonding is a feasible and promising technology.","PeriodicalId":386197,"journal":{"name":"2017 18th International Conference on Electronic Packaging Technology (ICEPT)","volume":"2016 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128264396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Design of a hydro-dynamically levitated centrifugal micro-pump for the active liquid cooling system 主动液冷系统中流体动力悬浮离心微泵的设计
2017 18th International Conference on Electronic Packaging Technology (ICEPT) Pub Date : 2017-08-01 DOI: 10.1109/ICEPT.2017.8046481
Ruikang Wu, B. Duan, Falong Liu, Han Wu, Yanhua Cheng, Xiaobing Luo
{"title":"Design of a hydro-dynamically levitated centrifugal micro-pump for the active liquid cooling system","authors":"Ruikang Wu, B. Duan, Falong Liu, Han Wu, Yanhua Cheng, Xiaobing Luo","doi":"10.1109/ICEPT.2017.8046481","DOIUrl":"https://doi.org/10.1109/ICEPT.2017.8046481","url":null,"abstract":"The active liquid cooling system is urgently required for heat dissipation of high-power electronics. However, the key part of the system, micro-pump, is still challenged by the bearing failure problem caused by the mechanical friction. We designed a hydro-dynamically levitated centrifugal micro-pump, providing a 1.0 L/min flow rate and a 45 KPa pressure head at 20000 rpm with the size as small as 23mm×23mm×25mm. By utilizing radial and axial hydro-dynamically levitated bearings, the rotating units can be successfully levitated and realize no contact and no friction. The designed micro-pump has large power density, high rotating speed, long-life and high-reliability and we believe that it may have extensive application in active liquid cooling systems.","PeriodicalId":386197,"journal":{"name":"2017 18th International Conference on Electronic Packaging Technology (ICEPT)","volume":"158 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128626585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Numerical simulation of the wire bonding reliability of IGBT module under power cycling 功率循环下IGBT模块焊线可靠性的数值模拟
2017 18th International Conference on Electronic Packaging Technology (ICEPT) Pub Date : 2017-08-01 DOI: 10.1109/ICEPT.2017.8046696
Xiaorui Bie, F. Qin, Tong An, Jingyi Zhao, Chao Fang
{"title":"Numerical simulation of the wire bonding reliability of IGBT module under power cycling","authors":"Xiaorui Bie, F. Qin, Tong An, Jingyi Zhao, Chao Fang","doi":"10.1109/ICEPT.2017.8046696","DOIUrl":"https://doi.org/10.1109/ICEPT.2017.8046696","url":null,"abstract":"As the demand of power converter for higher power density is increasing, bonding wire failure of IGBT module becomes more severe. Accordingly, it is of great significance to investigate the reliability of bonding wire under operating condition for improving the reliability of IGBT module. In this paper, the finite element model of IGBT module was established, and a two-step indirect coupling electro-thermal-mechanical analysis was conducted to evaluate the wire bonding reliability of IGBT module under the power cylcing. The thermal-mechanical analysis results indicate that the maximum equivalent plastic strain occurs at the corner of the bonded interface between the outermost bonding wire and the chip, where the cracks may initiate and then propagate along the interface, which is consistent with the observations of experimental results. It suggests that the outermost bonding wire is more likely to fail.","PeriodicalId":386197,"journal":{"name":"2017 18th International Conference on Electronic Packaging Technology (ICEPT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128655064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 16
Quasi in situ study about growth kinetics of Ag3Sn at the interface of eutectic SnPb/electroplated Ag soder joint in the long-term satellite 长期卫星观测中共晶SnPb/电镀Ag焊点界面Ag3Sn生长动力学的准原位研究
2017 18th International Conference on Electronic Packaging Technology (ICEPT) Pub Date : 2017-08-01 DOI: 10.1109/ICEPT.2017.8046442
Xiaoliang Ji, R. An, Chunqing Wang
{"title":"Quasi in situ study about growth kinetics of Ag3Sn at the interface of eutectic SnPb/electroplated Ag soder joint in the long-term satellite","authors":"Xiaoliang Ji, R. An, Chunqing Wang","doi":"10.1109/ICEPT.2017.8046442","DOIUrl":"https://doi.org/10.1109/ICEPT.2017.8046442","url":null,"abstract":"The interfacial reaction and the growth kinetics of intermetallic compounds between 63Sn37Pb (wt.%) solder and the electroplated silver layer during the solid-state aging were studied in this paper. To measure the growth kinetics of Ag3Sn, the product of the interfacial reaction, more accurately, we used the quasi in situ method. And three same joints between solar cells and solder were annealed at 100°C, 120°C and 150°C for various aging durations. The results showed that the electroplated Ag layer gradually transformed into scalloped Ag3Sn, and the growth kinetics of Ag3Sn was a diffusion-controlled process during isothermal aging. Through measuring the thickness of Ag3Sn during the isothermal storage, the activation energy for IMC at eutectic SnPb solder/electroplated Ag layer interface was calculated and the result was 106 kJ/mole. On the basis of the growth kinetics, a correspondence between long-term thermal recycle and isothermal aging was presented. And the relation could be used to replace the long-term thermal recycle with accelerated annealing experiment, which would have a significant meaning for testing the reliability of low earth orbit satellites' solar cells.","PeriodicalId":386197,"journal":{"name":"2017 18th International Conference on Electronic Packaging Technology (ICEPT)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124612300","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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