All-optical difference engine for in-process defect inspection for roll-to-roll printed electronics

Xiaobing Feng (Corresponding author), Rong Su, Tuomas Happonen, Jian Liu, Richard Leach

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

Abstract

The increasing capabilities of roll-to-roll (R2R) printing processes present challenges for quality control, requiring inprocess inspection of large substrates with high resolution at high speed. In this paper, an all-optical difference engine (AODE) sensor has been developed for in-process defect inspection for R2R printed electronics. The AODE sensor achieves high-speed inspection by utilising the principle of coherent optical subtraction to minimise data processing. The capability of the developed sensor is demonstrated using industrial printed electrical circuity samples and the sensor is capable of inspecting areas of 4 mm width with a resolution of the order of several micrometres.

Original languageEnglish
Title of host publicationTenth International Symposium on Precision Engineering Measurements and Instrumentation
EditorsJiubin Tan, Jie Lin
PublisherInternational Society for Optics and Photonics SPIE
Pages1105308-1-1105308-8
Number of pages8
ISBN (Electronic)9781510627819
DOIs
Publication statusPublished - 7 Mar 2019
MoE publication typeA4 Article in a conference publication
Event10th International Symposium on Precision Engineering Measurements and Instrumentation, ISPEMI 2018 - Kunming, China
Duration: 8 Aug 201810 Aug 2018
Conference number: 10

Publication series

SeriesProceedings of SPIE
Volume11053
ISSN0277-786X

Conference

Conference10th International Symposium on Precision Engineering Measurements and Instrumentation, ISPEMI 2018
Abbreviated titleISPEMI 2018
CountryChina
CityKunming
Period8/08/1810/08/18

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Keywords

  • defect detection
  • fourier optics
  • optical sensor
  • roll-to-roll manufacturing
  • spatial filtering

Cite this

Feng, X., Su, R., Happonen, T., Liu, J., & Leach, R. (2019). All-optical difference engine for in-process defect inspection for roll-to-roll printed electronics. In J. Tan, & J. Lin (Eds.), Tenth International Symposium on Precision Engineering Measurements and Instrumentation (pp. 1105308-1-1105308-8). [1105308] International Society for Optics and Photonics SPIE. Proceedings of SPIE, Vol.. 11053 https://doi.org/10.1117/12.2511140