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Future applications of flexible displays and wearable electronics will need 3-D stacked flexible interconnects. The interconnection of an ultrathin chip-on-flex (UTCOF) that can provide flexibility is one approach that meets this requirement. Therefore, thermally induced warpage of UTCOF interconnects using anisotropic conductive adhesive (ACA) is investigated. In this paper, the effects of the ACA...
Recently, drop test reliability has become a major concern for mobile electronic products. Especially, system-in-package (SIP) like stacked-die-package and package-on-package may lead to increased stress in solder joints during drop impacts due to their complicate structures. In this study, the evaluation of drop test reliability was performed for SIPs using modeling and drop test. 3D-dynamic nonlinear...
The nanoindentation experiment is an established technique for the determination of hardness and Young's modulus of thin films. This standard data set is not sufficient to be used as input to finite element simulations , because elastic-plastic material data is being required for analysis of reliability of metal layers. Therefore stress-strain curves are being determined by fitting the force displacement...
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