Review Article

Low Temperature Cu-Cu Bonding Technology in 3D Integration: An Extensive Review

[+] Author and Article Information
Asisa Kumar Panigrahy

Department of Electronics Engineering, National Chiao Tung University, Hsinchu, Taiwan

Kuan-Neng Chen

Professor, Department of Electronics Engineering, National Chiao Tung University, Hsinchu, Taiwan

1Corresponding author.

ASME doi:10.1115/1.4038392 History: Received August 31, 2017; Revised October 28, 2017


Arguably, the IC industry has received robust scientific and technological attention due to the ultra-small and extremely fast transistors since past four decades that consents to Moore's law. The introduction of new interconnect materials as well as innovative architectures has aided for large scale miniaturization of devices, but their contributions were limited. Thus, the focus has shifted towards the development of new integration approaches that reduce the interconnect delays which has been achieved successfully by three-dimensional integrated circuit (3D IC). At this juncture, semiconductor industries utilize Cu-Cu bonding as a key technique for 3D IC integration. This review paper focuses on the key role of low temperature Cu-Cu bonding, renaissance of the low temperature bonding, and current research trends to achieve low temperature Cu-Cu bonding for 3D IC and heterogeneous integration applications.

Copyright (c) 2017 by ASME
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