期刊
IEEE TRANSACTIONS ON COMPONENTS PACKAGING AND MANUFACTURING TECHNOLOGY
卷 13, 期 1, 页码 120-126出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TCPMT.2022.3232339
关键词
Advanced packaging; packaging miniaturiza-tion; spray coating; wafer-level bonding
In this article, a glass-based hermetic structure with a thickness thinner than 200 $\mu \text{m}$ and a size smaller than 1 mm2 is introduced, showing the potential for realizing the miniaturization of microelectromechanical systems (MEMS) with high throughput. The material selection of metal wire for the development of this new wafer-level packaging platform is studied. The technique of metal patterning on the cavity structure is demonstrated for the fabrication of seal ring and electrical connection simultaneously. Finally, the ultrathin hermetic structure is sealed by metal-to-metal bonding at wafer level. These technologies can be widely used in advanced miniaturized packaging applications for next-generation electronic components.
In this article, a glass-based hermetic structure has been packaged at wafer level with a thickness thinner than 200 $\mu \text{m}$ and a size smaller than 1 mm2, showing the prospective way to realize the miniaturization of microelectromechanical systems (MEMS) with high throughput. For the development of this novel wafer-level packaging platform, material selection of metal wire was studied. Next, the technique of metal patterning on the cavity structure was demonstrated for the fabrication of seal ring and electrical connection simultaneously. At last, the ultrathin hermetic structure was sealed by metal-to-metal bonding at wafer level. These technologies can be widely used in advanced miniaturized packaging applications for next-generation electronic components.
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