Development of phosphor coating and patterning process on light emitting diodes using optofluidic maskless lithography

Su Eun Chung, Jisung Jang, Seung Ah Lee, Hosuk Lee, Sunghoon Kwon

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We demonstrate conformal phosphor coating and patterning methods on light emitting diodes (LEDs) using image processing based optofluidic maskless lithography (IP-OFML) system in microfluidic channels. IP-OFML allows a real-time detection and dynamic mask generation for packaging of randomly dispersed microchips. Our system detects each chip by considering rotation of the chip through image processing regardless of their arrangement error. Therefore, it precisely packages the chip making conformal polymer layer. With the system, we present multilayer coating, selective layer packaging of silicon microchips, and conformal yellow phosphor coating on blue LED for uniform white light illumination considering top contacts opening.

Original languageEnglish
Title of host publicationProceedings of Conference, MicroTAS 2009 - The 13th International Conference on Miniaturized Systems for Chemistry and Life Sciences
PublisherChemical and Biological Microsystems Society
Pages1692-1694
Number of pages3
ISBN (Print)9780979806421
Publication statusPublished - 2009 Jan 1
Event13th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2009 - Jeju, Korea, Republic of
Duration: 2009 Nov 12009 Nov 5

Publication series

NameProceedings of Conference, MicroTAS 2009 - The 13th International Conference on Miniaturized Systems for Chemistry and Life Sciences

Other

Other13th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2009
CountryKorea, Republic of
CityJeju
Period09/11/109/11/5

All Science Journal Classification (ASJC) codes

  • Chemical Engineering (miscellaneous)
  • Bioengineering

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  • Cite this

    Chung, S. E., Jang, J., Lee, S. A., Lee, H., & Kwon, S. (2009). Development of phosphor coating and patterning process on light emitting diodes using optofluidic maskless lithography. In Proceedings of Conference, MicroTAS 2009 - The 13th International Conference on Miniaturized Systems for Chemistry and Life Sciences (pp. 1692-1694). (Proceedings of Conference, MicroTAS 2009 - The 13th International Conference on Miniaturized Systems for Chemistry and Life Sciences). Chemical and Biological Microsystems Society.