Pre‐bond testing through direct probing of large‐array fine‐pitch micro‐bumps

Erik Jan Marinissen, Bart De Wachter, Jörg Kiesewetter, Ken Smith

Research output: Chapter in Book/Report/Conference proceedingChapterAcademicpeer-review

Abstract

In order to obtain acceptable compound stack yields for 2.5D‐ and 3D‐stacked integrated circuits (SICs), there is a need to test the constituting dies before stacking. The non‐bottom dies of these stacks have their functional access exclusively through large arrays of fine‐pitch micro‐bumps, which are too dense for conventional probe technology. A common approach to obtain pre‐bond test access is to equip these dies with dedicated pre‐bond probe pads, which comes with drawbacks such as increased silicon area and test application time and reduced interconnect performance. In order to avoid the many drawbacks of dedicated pre‐bond probe pads, we advocate the usage of advanced probe technology that allows to directly probe on these micro‐bumps. This chapter reports on the technical feasibility of this approach. The economical feasibility is addressed in Chapter 9.
Original languageEnglish
Title of host publicationHandbook of 3D integration
Subtitle of host publicationvolume 4: design, test, and thermal management
EditorsP.D. Franzon, E.J. Marinissen, M.S. Bakir
Place of PublicationWeinheim
PublisherWiley-VCH Verlag
Chapter11
Pages231-252
Number of pages22
ISBN (Print)978-3-527-33855-9
DOIs
Publication statusPublished - 8 Feb 2019

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