Abstract
Recently, the electronics industry is developing toward artificial intelligence, the Internet of things, fifth-generation technology, and high-performance computing. High-density electronics packaging, high speed, high performance, and miniaturized size are required to satisfy these trends. Three-dimensional Si-chip stacking using through-Si via (TSV) has attracted the attention of industries related to these requirements. In this study, TSV fabrication using the deep reactive ion-etching process and the coating of functional layers on the TSV wall, such as insulating, adhesion, and seed layers, were investigated. In addition, Cu electroplating in the TSV was analyzed in detail. The solutions to other accompanied technical barriers for packaging high-density electronics can improve smartness and con- venience. Key words: Three dimensional packaging, Through-Si-Via, Functional layers, Electroplating
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