Application of high frequency scanning acoustic microscopy for the failure analysis and reliability assessment of MEMS sensors

被引:4
作者
Oberhoff, S. [1 ]
Goetz, K. [1 ]
Trojan, K. [1 ]
Zoeller, M. [1 ]
Glueck, J. [1 ]
机构
[1] Robert Bosch GmbH, Automot Elect, Dieselstr 6, D-72770 Reutlingen, Germany
关键词
Scanning acoustic microscopy; High frequency SAM; Infrared microscopy; MEMS inertial sensors; Wafer bonding;
D O I
10.1016/j.microrel.2016.07.108
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
We successfully applied high frequency scanning acoustic microscopy (SAM) as a tool for the analysis of MEMS sensors. Using state of the art transducers with frequencies up to 300 MHz, we evaluated the achievable resolution and performed case studies: we localized a contamination-induced delamination on the ASIC surface and studied failure modes after mechanical stability tests, showing that a combination of SAM and infrared microscopical evaluation provides information about the course of cracks on a micrometer length scale. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码:656 / 659
页数:4
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