Skip to main content

Research Repository

Advanced Search

Fast and cost-effective in-process defect inspection for printed electronics based on coherent optical processing

Feng, Xiaobing; Su, Rong; Happonen, Tuomas; Liu, Jian; Leach, Richard

Authors

Xiaobing Feng xiaobing.feng@nottingham.ac.uk

Rong Su

Tuomas Happonen

Jian Liu



Abstract

This paper presents an all-optical difference engine (AODE) sensor for detecting the defects in printed electronics produced with roll-to-roll processes. The sensor is based on the principle of coherent optical subtraction and is able to achieve high-speed inspection by minimising data post-processing. A self-comparison inspection strategy is introduced to allow defect detection by comparing the printed features and patterns that have the same nominal dimensions. In addition, potential applications of the AODE sensor in an on-the-fly pass-orreject production control scenario are presented. A prototype AODE sensor using a digital camera is developed and demonstrated by detecting defects on several industrial printed electrical circuitry samples. The camera can be easily replaced by a low-cost photodiode to realise high-speed all-optical information processing and inspection. The developed sensor is capable of inspecting areas of 4 mm width with a resolution of the order of several micrometres, and can be duplicated in parallel to inspect larger areas without significant cost.

Citation

Feng, X., Su, R., Happonen, T., Liu, J., & Leach, R. (2018). Fast and cost-effective in-process defect inspection for printed electronics based on coherent optical processing. Optics Express, 26(11), https://doi.org/10.1364/OE.26.013927

Journal Article Type Article
Acceptance Date Apr 30, 2018
Online Publication Date May 16, 2018
Publication Date May 28, 2018
Deposit Date May 1, 2018
Publicly Available Date May 16, 2018
Journal Optics Express
Electronic ISSN 1094-4087
Publisher Optical Society of America
Peer Reviewed Peer Reviewed
Volume 26
Issue 11
DOI https://doi.org/10.1364/OE.26.013927
Public URL http://eprints.nottingham.ac.uk/id/eprint/51513
Publisher URL https://www.osapublishing.org/oe/abstract.cfm?uri=oe-26-11-13927
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0

Files






You might also like



Downloadable Citations