{"title":"Integration of screen-printed electroluminescent matrix displays in smart textile items — Implementation and evaluation","authors":"A. Ivanov, M. Wurzer","doi":"10.23919/EMPC.2017.8346873","DOIUrl":"https://doi.org/10.23919/EMPC.2017.8346873","url":null,"abstract":"Present work describes integration of electroluminescent matrix displays in textile objects and evaluation of possible practical applications. Aspects restricting the application of electroluminescent elements in clothing, like high driving voltage and low light intensity, are discussed. Possible solutions for these issues are proposed. A low-cost driver for a passive matrix display and the underlying non-conventional method of multiplexing is presented. Measures to bring the driver circuit to the conformity with safety regulations are described. Obtained results show that the integration of electroluminescent pixel displays into textile items can be carried out with low technical effort using available technology; a good visibility is achieved in most indoor situations.","PeriodicalId":329807,"journal":{"name":"2017 21st European Microelectronics and Packaging Conference (EMPC) & Exhibition","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132542990","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}
{"title":"Measurements of transient thermal impedance of ferrite cores","authors":"K. Detka, K. Górecki","doi":"10.23919/EMPC.2017.8346912","DOIUrl":"https://doi.org/10.23919/EMPC.2017.8346912","url":null,"abstract":"The aim of the paper is to characterise thermal proprieties of ferrite cores with the use of the compact thermal model. The method of measurements of transient thermal impedance of such cores is proposed. Some results of measurements of waveforms of transient thermal impedance of the selected ferrite cores of different dimensions are shown and discussed.","PeriodicalId":329807,"journal":{"name":"2017 21st European Microelectronics and Packaging Conference (EMPC) & Exhibition","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126981856","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}
{"title":"Method and laboratory set-up for testing of RFID systems in static and dynamic states","authors":"J. Potencki, M. Skoczylas","doi":"10.23919/EMPC.2017.8346914","DOIUrl":"https://doi.org/10.23919/EMPC.2017.8346914","url":null,"abstract":"Growing popularity and increasing range of the RFID systems implementations make it necessary to conduct multidirectional researches, with a particular focus on theirs operation in the dynamic states, when the reader-programmer antenna (RWD) changes its position relative to the identifier. At present, the most RFID applications are characterized by this form of operation. In the paper the research method and the construction of a laboratory stand for testing the radio-identification systems of the objects have been presented. Their overriding goal is to precise map the desired spatial configuration of the tag's set and the antenna or antenna's set of the programmer-reader (RWD). This method and elaborated set-up allow for the static and dynamic studies, with a full control of the dynamic motion parameters such as a momentary position, speed and acceleration.","PeriodicalId":329807,"journal":{"name":"2017 21st European Microelectronics and Packaging Conference (EMPC) & Exhibition","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121825078","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}
{"title":"Measurements and simulations of silicon carbide current-controlled transistors","authors":"J. Patrzyk, D. Bisewski","doi":"10.23919/EMPC.2017.8346923","DOIUrl":"https://doi.org/10.23919/EMPC.2017.8346923","url":null,"abstract":"This paper presents a results of measurements and simulations of two modern silicon carbide current-controlled transistors: BT1206-AC (TranSiC) and 2N7635-GA (GeneSiC). The accuracy and usefulness of the Gummel-Poon built-in SPICE model in modelling mentioned transistors is presented. A comparison of the properties and parameters of these transistors in a wide range of ambient temperature, are presented as well.","PeriodicalId":329807,"journal":{"name":"2017 21st European Microelectronics and Packaging Conference (EMPC) & Exhibition","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124695267","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}
G. Jasinski, P. Kalinowski, L. Wozniak, P. Kościński, P. Jasiński
{"title":"An electronic nose based on the semiconducting and electrochemical gas sensors","authors":"G. Jasinski, P. Kalinowski, L. Wozniak, P. Kościński, P. Jasiński","doi":"10.23919/EMPC.2017.8346895","DOIUrl":"https://doi.org/10.23919/EMPC.2017.8346895","url":null,"abstract":"The practical application of human nose for fragrance recognition is severely limited by the fact that our sense of smell is subjective and gets tired easily. Consequently, there is a significant need for an instrument that can be a substitution of the human sense of smell. Development of an electronic nose devices is an active area of research starting from pioneering research of Dodd and Persuad in the mid-1980s. Such systems are used in growing number of applications. They comprise an array of several electrochemical gas sensors with partial specificity and a pattern recognition algorithms. Since most of the existing types of sensors are characterized by low selectivity, they can all be used in the construction of electronic noses. Most electronic nose systems are based only on one type of gas sensors. However, different types of sensors have different advantages and disadvantages. In this article, an electronic nose system for the purpose of incorporating different types of sensors has been proposed developed. Such approach allows to benefit from advantages of different type of sensors, and thus improve the operation of the entire system.","PeriodicalId":329807,"journal":{"name":"2017 21st European Microelectronics and Packaging Conference (EMPC) & Exhibition","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124165935","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}
D. Manessis, J. Pawlikowski, A. Ostmann, K. Schischke, R. Aschenbrenner, M. Schneider-Ramelow, T. Krivec, G. Podhradsky, K. Lang
{"title":"Embedding technologies for heterogeneous integration of components in PCBs-an innovative modularisation approach with environmental impact","authors":"D. Manessis, J. Pawlikowski, A. Ostmann, K. Schischke, R. Aschenbrenner, M. Schneider-Ramelow, T. Krivec, G. Podhradsky, K. Lang","doi":"10.23919/EMPC.2017.8346879","DOIUrl":"https://doi.org/10.23919/EMPC.2017.8346879","url":null,"abstract":"The paper presents in the frame of an EU Project “Sustainably SMART” the first results on the development of ecofriendly PCB embedding technologies toward advanced electronic modularization and miniaturization. It focuses on the further development of embedding technologies deploying accurate “face-down” assembly techniques, lamination in epoxy prepreg layers and state-of-the-art PCB processes for the breakdown of complex electronic systems in functional modules with discrete functionalities that can be at the end assembled flexibly with non-permanent interconnection techniques on the mainboard. These embedding technologies offer the advantage of the heterogeneous integration of components — with different functionalities, thicknesses and already existing in the market as pre-packaged components with solder terminations (e.g BGA, CSP)- in the inner layer of PCBs as assembled components and then the redistribution of their signals in the outer layers through copper electroplated microvias and drilled through vias. Based on this concept, the digital voice recorder (DVR) of end user Speech has been split in base and functional modules. The new designs of the USB, power, and DSP modules will be presented and the manufacturing processes and results of the digital signal processing (DSP) module will be discussed in detail. This paper demonstrates miniaturized DSP modules, 15mm×15mm×2.8mm comprising 68 components with DSP and quartz crystals to be embedded and flash memory and passives to be assembled as SMT components on top. The creation of such modules with the right adjustment of their termination pads will lead to a reduction of the backbone from 6 to 4 or even 2 layers with a conspicuous positive economic and environmental impact.","PeriodicalId":329807,"journal":{"name":"2017 21st European Microelectronics and Packaging Conference (EMPC) & Exhibition","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127570472","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}
{"title":"The importance of shear thinning, thixotropic and viscoelastic properties of thick film pastes to predict effects on printing performance","authors":"K. Reinhardt, Nancy Hofmann, M. Eberstein","doi":"10.23919/EMPC.2017.8346831","DOIUrl":"https://doi.org/10.23919/EMPC.2017.8346831","url":null,"abstract":"Highly concentrated ceramic polymer suspensions (thick film pastes) are used in many fields of hybrid technology and micro systems packaging. Thereby, in dependence of the used printing technologies like screen printing or micro-dispensing, different requirements are set on the ceramic suspensions. For example, to reach similar structural resolutions for both technologies the suspensions can differ strongly in their solid content, their organic polymer suspension and, above all, in their viscosity. This results in the fact that it is enormously important for paste development to study the requirements and for successful deposition to adjust them by means of targeted variation of the paste components. These components are for a typical ceramic suspension: a solvent, a polymer and inorganic fillers. Such complex fluids exhibit a broad spectrum of rheological features attributable to the various components and making effective controls over their printing properties a formidably challenging task. However, understanding the rheological properties is crucial for setting an optimal high-precision printing. Previous works have tried to correlate rheological properties of commercial thick film pastes [1,2] to screen printing behavior, but these results didn't allow correlations to the particular components and no specific adjustments for the formulation of suspensions are possible. This study will show how rheological parameters can be adjusted by specific paste composition variations in order to adjust the deposition behavior according to the printing technology. Results of the pastes development, in which the particle type, shape, size, but also the polymer-solvent system were systematically varied, are shown in order to deposit high-resolution structural functional layers. Both shear thinning and thixotropic as well as viscoelastic properties of the paste systems are considered and correlated with their effects on printing performance.","PeriodicalId":329807,"journal":{"name":"2017 21st European Microelectronics and Packaging Conference (EMPC) & Exhibition","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127915087","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}
{"title":"Finite element study of chip package induced mechanical and corrosive failure modes complementing microstructural root cause analyses","authors":"G. Lorenz, M. Simon-Najasek, A. Lindner","doi":"10.23919/EMPC.2017.8346891","DOIUrl":"https://doi.org/10.23919/EMPC.2017.8346891","url":null,"abstract":"In automotive applications microelectronic components have to meet very strict reliability requirements. Additionally mechanical or thermomechanical stresses resulting from manufacturing processes or application conditions, as well as chemical influences have to be considered due to the exposure to harsh environmental conditions. In complex mounting situations or the use in harsh environments, e.g. humidity and corrosive compounds, even relatively simple devices (e.g. Hall sensors) can face complex failure modes. In these cases Finite-Element-Analyses (FEA) can support microstructural failure diagnostic methods and help to understand potential failure risks resulting from chip-package interaction effects (e.g. mechanical stresses resulting from the packaging process or different mounting situations). Such mechanical stresses do not only determine the risk of deformation-induced failure and cracking but can also affect the diffusion kinetics of chemical substances. This paper addresses chip-package interaction effects that determine the risk of chip damage by several failure modes. Results from microstructural failure analyses like scanning acoustic microscopy SAM, scanning electron microscopy (SEM) combined with energy dispersive X-ray spectroscopy (EDX) where combined with FEA in order to understand the influence of different process parameters, mounting steps or material inhomogeneity's regarding the components reliability.","PeriodicalId":329807,"journal":{"name":"2017 21st European Microelectronics and Packaging Conference (EMPC) & Exhibition","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121067638","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}
{"title":"Small form-factor, liquid-cooled SiPM module for PET/MRI applications","authors":"R. Dohle, T. Rittweg, I. Sacco","doi":"10.23919/EMPC.2017.8346828","DOIUrl":"https://doi.org/10.23919/EMPC.2017.8346828","url":null,"abstract":"We present recent advances in the technology for small form factor hybrid circuits with one water cooled LTCC substrate, Silicon Photomultipliers (SiPMs) and highest-performance ASICs for application in scintillator detectors for time-of-flight (TOF) Positron Emission Tomography / Magnetic Resonance Imaging applications. One of the biggest challenges is the development of miniaturized sensor modules that are highly functional and MRI compatible. The SiPM modules with an area of 32.8 by 32.0 mm2 contain 12 × 12 SiPMs in a pitch of 2.5 mm2. The readout of the 144 channels is performed by four PETA6 ASICs. The LTCC substrate with 2.1 mm thickness has been manufactured using the most advanced technologies developed at MSE. The liquid cooling channels inside the LTCC substrate provide excellent cooling for the ASICs, the SiPMs, and thermal insulation between ASICs and SiPMs and allow a very compact design of the detector modules, reducing their height by 50% compared with other technical solutions. The 12 SiPM arrays with 2×6 geometry are wire bonded only at the edges of the SiPMs to the LTCC, enabling the use of nearly the whole detector area for photon detection. At the opposite side of the substrate, four ASICs for the readout electronic with 272 μm bump pitch are flip-chip solder assembled to the LTCC substrate and underfilled and a few SMD components are mounted. LTCC substrates and all components are fully MRI compatible, which allows integration of PET with magnetic resonance imaging without mutual interference. A scintillator crystal array on top of the SiPMs converts gamma-rays produced by the decay of positrons into light. With measurements on prototypes the best coincidence resolving times (CRTs) for pairs of identical detectors in combination with high spatial resolution have been obtained.","PeriodicalId":329807,"journal":{"name":"2017 21st European Microelectronics and Packaging Conference (EMPC) & Exhibition","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122388247","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}
{"title":"Mechanical properties and life time of high Pb-containing solder joints","authors":"G. Khatibi, A. Betzwar Kotas","doi":"10.23919/EMPC.2017.8346898","DOIUrl":"https://doi.org/10.23919/EMPC.2017.8346898","url":null,"abstract":"High lead-containing soft solders with melting points of above 300°C are still widely used in power semiconductors for high temperature applications due to lack of reliable and cost effective lead-free alternative solutions. In this study the influence of aging on stress-strain response and fatigue life of solder joints prepared with two types of high-Pb solder alloys with different Sn content was investigated. Tensile experiments were carried out by using model solder joints prepared with Cu or Ni strips as substrates. Multi-layered samples consisting of Ni-coated Si chips soldered on metallized ceramic substrates were used for isothermal bending fatigue studies. The growth rate of the Cu-Sn interfacial intermetallic compound (IMC) was found to be considerably higher than that of Ni-Sn IMC. Independent from the substrate material a higher IMC growth rate was always observed in the solder joints prepared with a higher Sn content. On the other hand, these joints showed a clear improvement of tensile and fatigue properties. The moderate fatigue response of the PbSnAg solder joints with a lower Sn content could be related to the occurrence of interfacial delamination. Furthermore, it was found that not only the Sn concentration of the solder but also the thickness of the wettable substrate affects the spalling and delamination of the interfacial IMC layer. Finally, it is demonstrated that accelerated isothermal bending fatigue testing can be used for rapid evaluation of large area solder joints in electronics.","PeriodicalId":329807,"journal":{"name":"2017 21st European Microelectronics and Packaging Conference (EMPC) & Exhibition","volume":"109 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122835075","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}