中图分类号:TN406文献标识码:ADOI:10.19339/j.issn.1674-2583.2026.06.002 中文引用格式:连志强,路文墨,李冬梅,等. CT成像在集成电路封装互连失效分析中的应用[J].集成电路应用,2026,43(6):7-13. 英文引用格式:Lian Zhiqiang, Lu Wenmo, Li Dongmei, et al. Application of CT in failure analysis of integrated circuit packaging interconnection[J].Application of IC,2026,43(6):7-13.
Application of CT in failure analysis of integrated circuit packaging interconnection
Lian Zhiqiang1, Lu Wenmo2, Li Dongmei2, Zhu Jianbin2
1. NCS-Micro Beams [Beijing]; 2. Beijing Microelectronics Technology Institute
Abstract: As integrated circuits move toward advanced packaging with high integration and density, conventional failure analysis techniques show significant limitations in three-dimensional non-destructive inspection, precise localization of micro-defects, and observation of deep internal structures. Consequently, they can hardly meet the engineering requirements for interconnect failure analysis of advanced packages. This study systematically investigated the application of X-ray computed tomography (CT) to package interconnect failure analysis. The imaging principle, system configuration, and inspection workflow of CT were first described, followed by an analysis of key techniques such as geometric correction, local reconstruction, and fast computation. Two typical failure cases were examined, namely bonding wire neck fracture in wire-bonded circuits and cracking of stacked vias in flip-chip substrates. The results demonstrate that CT enables 3-D localization and morphological characterization of micrometer-scale internal defects without destroying the samples.
Key words : integrated circuit; CT imaging; non-destructive testing; failure analysis; ion pump