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

    Keywords

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

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