A robust and rapid development procedure for a novel three-dimensional stacking wafer level chip-scaled packaging (3DS-WLCSP), emphasizing the finite-element parametric analysis and experimental validation, is disclosed herein. This design procedure is comprised of the fundamental validation of conventional wafer-level chip-scaled packaging (WLCSP), design methodology development of the test vehicles and then the fabrication of the proposed 3DS-WLCSP structure. Based on the validation of the conventional WLCSP measurement and experiment, a reliable finite-element model can be achieved. However, in order to reduce the product design period, a simplified Glass-WLCSP is chosen as the test vehicle in the parametric design/validation procedure. Through the parametric analysis, one can obtain robust design parameters. Therefore, the proposed 3DS-WLCSP can be fabricated within the validated design parameters.Index Terms-Factorial analysis, finite-element method, threedimensional (3-D) stacking, wafer-level packaging.
The elasticity and extensibility behaviors of sequence-dependent single stranded and double stranded DNA ͑ssDNA/dsDNA͒ under various external loading conditions are studied by the clustered atomistic-continuum mechanics ͑CACM͒. The proposed numerical CACM is based on the finite element method, and it comprises both the atomistic-continuum and clustered atomistic-continuum ͑the clustered atoms are treated as a single super atom͒ mechanics. Through the CACM simulation, the transient mechanical response of the DNA could be revealed, including the stretching and rotating of the DNA backbone. Moreover, good agreement was achieved between the numerical simulation and single molecule experimental results.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.