Electrical investigation and reliability of 3D integration platform using Cu TSVs and micro-bumps with Cu/Sn-BCB hybrid bonding

Yao Jen Chang, Cheng Ta Ko, Zhi Cheng Hsiao, Cheng Hao Chiang, Huan Chun Fu, Tsung Han Yu, Cheng Han Fan, Wei Chung Lo, Kuan-Neng Chen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

In this paper, the wafer-level three-dimensional (3-D) integration scheme using copper TSVs and fine-pitch Cu/Sn-BCB hybrid bonding is designed, fabricated, and completely investigated on electrical characteristics and stability. Key technologies in this 3D integration scheme include high aspect-ratio Cu TSV, fine-pitch Cu/Sn micro-bumps, 250 °C low temperature hybrid bonding, wafer thinning and backside RDL formation. The Kelvin and leakage current structures are designed for realization of fundamental electrical properties, and the daisy chain feature is designed for stability evaluation with several reliability tests. All the samples pass the 1000-cycle thermal cycling test, humidity test, and multiple AC current stressing. This scheme shows a significant leakage current improvement after modifying backside process. The stable reliability results and excellent electrical characteristics indicate that the 3D integration scheme has the excellent sealing ability against oxidation and corrosion, and could be potentially applied for future mass production.

Original languageEnglish
Title of host publication2013 IEEE 63rd Electronic Components and Technology Conference, ECTC 2013
Pages64-70
Number of pages7
DOIs
StatePublished - 9 Sep 2013
Event2013 IEEE 63rd Electronic Components and Technology Conference, ECTC 2013 - Las Vegas, NV, United States
Duration: 28 May 201331 May 2013

Publication series

NameProceedings - Electronic Components and Technology Conference
ISSN (Print)0569-5503

Conference

Conference2013 IEEE 63rd Electronic Components and Technology Conference, ECTC 2013
CountryUnited States
CityLas Vegas, NV
Period28/05/1331/05/13

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