Hybrid additive manufacturing of 3D electronic systems

Journal article


Li, J, Wasley, T, Nguyen, TT, Ta, VD, Shephard, JD, Stringer, J, Smith, P, Esenturk, E, Connaughton, C and Kay, R (2016). Hybrid additive manufacturing of 3D electronic systems. Journal of Micromechanics and Microengineering. 26 (10), pp. 105005-105005. https://doi.org/10.1088/0960-1317/26/10/105005
AuthorsLi, J, Wasley, T, Nguyen, TT, Ta, VD, Shephard, JD, Stringer, J, Smith, P, Esenturk, E, Connaughton, C and Kay, R
Abstract

This is an author-created, un-copyedited version of an article accepted for publication/published
in Journal of Micromechanics and Microengineering. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or
any version derived from it. The Version of Record is available online at 10.1088/0960-1317/26/10/105005

A novel hybrid additive manufacturing (AM) technology combining digital light projection (DLP) stereolithography (SL) with 3D micro-dispensing alongside conventional surface mount packaging is presented in this work. This technology overcomes the inherent limitations of individual AM processes and integrates seamlessly with conventional packaging processes to enable the deposition of multiple materials. This facilitates the creation of bespoke end-use products with complex 3D geometry and multi-layer embedded electronic systems. Through a combination of four-point probe measurement and non-contact focus variation microscopy, it was identified that there was no obvious adverse effect of DLP SL embedding process on the electrical conductivity of printed conductors. The resistivity maintained to be less than 4  ×  10−4 Ω centerdot cm before and after DLP SL embedding when cured at 100 °C for 1 h. The mechanical strength of SL specimens with thick polymerized layers was also identified through tensile testing. It was found that the polymerization thickness should be minimised (less than 2 mm) to maximise the bonding strength. As a demonstrator a polymer pyramid with embedded triple-layer 555 LED blinking circuitry was successfully fabricated to prove the technical viability.

Year2016
JournalJournal of Micromechanics and Microengineering
Journal citation26 (10), pp. 105005-105005
PublisherIOP Publishing
ISSN0960-1317
Digital Object Identifier (DOI)https://doi.org/10.1088/0960-1317/26/10/105005
Publication dates
Print23 Aug 2016
Publication process dates
Deposited12 Dec 2017
Accepted28 Jun 2016
Accepted author manuscript
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Open
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