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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 29, Iss. 18 — Sep. 15, 2011
  • pp: 2684–2689

Organic LEDs Combined With Inorganic LEDs

Jongwoon Park, Taehyun Ban, and Daehyuk Choi

Journal of Lightwave Technology, Vol. 29, Issue 18, pp. 2684-2689 (2011)


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Abstract

An organic light-emitting device (OLED) is coupled with inorganic LEDs to strengthen the OLED's weak point (i.e., low luminous intensity). To this end, side-view LED bars are deployed on the sides of the glass substrate of OLED. To extract not only OLED light but also LED light from the glass substrate, a microlens array (MLA) film is attached to the outer surface of the glass substrate. It is found by experiments that the LED light intensity from the emission area of OLED is relatively low, compared with the OLED light intensity. Moreover, the LED light distribution is shown to be highly non-uniform. To tackle those problems, we introduce a scattering layer at the outer surface of the glass substrate. It is demonstrated by simulations that the luminous intensity and spatial uniformity of the LED light can be significantly enhanced with the aid of the scattering layer configuration where the scattering particle density is stepwisely varied.

© 2011 IEEE

Citation
Jongwoon Park, Taehyun Ban, and Daehyuk Choi, "Organic LEDs Combined With Inorganic LEDs," J. Lightwave Technol. 29, 2684-2689 (2011)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-29-18-2684

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