Journal of Information Display

  • 제13권3호
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  • Pages.119-123
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  • 2012
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  • 1598-0316(pISSN)
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  • 2158-1606(eISSN)
한국정보디스플레이학회 (The Korean Infomation Display Society)
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A new method for monitoring an OLED panel for lighting by sensing the wave-guided light

  • Han, Jun-Han (OLED Research Team, Electronics and Telecommunications Research Institute (ETRI)) ;
  • Moon, Jaehyun (OLED Research Team, Electronics and Telecommunications Research Institute (ETRI)) ;
  • Shin, Jin-Wook (OLED Research Team, Electronics and Telecommunications Research Institute (ETRI)) ;
  • Joo, Chul Woong (OLED Research Team, Electronics and Telecommunications Research Institute (ETRI)) ;
  • Cho, Doo-Hee (OLED Research Team, Electronics and Telecommunications Research Institute (ETRI)) ;
  • Hwang, Joohyun (OLED Research Team, Electronics and Telecommunications Research Institute (ETRI)) ;
  • Huh, Jin Woo (OLED Research Team, Electronics and Telecommunications Research Institute (ETRI)) ;
  • Chu, Hye Yong (OLED Research Team, Electronics and Telecommunications Research Institute (ETRI)) ;
  • Lee, Jeong-Ik (OLED Research Team, Electronics and Telecommunications Research Institute (ETRI))
  • 투고 : 2012.04.17
  • 심사 : 2012.07.04
  • 발행 : 2012.09.30
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초록

In this work, we report on a new monitoring method for an organic light-emitting diode (OLED) panel for lighting by optical sensing of the wave-guided light in the substrate. Using microlens array films, the wave-guided light was extracted into the edge or back side of the panel to be monitored by a photodiode. The luminance of the extracted light was measured as linearly proportional to the front light. Thus, by converting the extracted light into photo voltage, monitoring the luminance change occurring in the OLED is possible. Based on the results and concepts, we have proposed a photodiode-equipped driving circuit which can generate compensated driving current for uniform luminance of OLED panels.

키워드

과제정보

연구 과제 주관 기관 : KEIT

참고문헌

  1. J.-H. Han, J. Moon, D.-H. Cho, J.-W. Shin, C.W. Joo, J. Hwang, J.W. Huh, H.Y. Chu and J.-I. Lee, presented at Eurodisplay, France, 2011.
  2. J.S. Park, J.H.Yu,W.S. Jeon,Y.H. Son, C. Kulshreshtha, and J.H. Kwon, J. Inform. Disp. 12, 51 (2011). https://doi.org/10.1080/15980316.2011.563059
  3. H. Lee, H. Ahn, and C. Lee, J. Inform. Disp. 12, 219 (2011). https://doi.org/10.1080/15980316.2011.621323
  4. J. Lee, J.-I. Lee, J.-W. Lee, and H.Y. Chu, ETRI Journal 33, 32 (2011). https://doi.org/10.4218/etrij.11.0110.0172
  5. H.-J. In, O.-K. Kwon, Electron Device Lett. 30, 377 (2009). https://doi.org/10.1109/LED.2009.2014885
  6. J.Yu, J.R.Tischler, C.G. Sodini,V. Bulovic, J. Disp.Technol. 4, 308 (2008). https://doi.org/10.1109/JDT.2008.921771
  7. J.W. Huh, J. Moon, J.W. Lee, D.-H. Cho, J.-W. Shin, J.-H. Han, J. Hwang, C.W. Joo, J.-I. Lee, and H.Y. Chu, IEEE Photonics J. 4, 39 (2012). https://doi.org/10.1109/JPHOT.2011.2176478
  8. J. Hwang, H.K. Choi, J. Moon, T.Y. Kim, J.-W. Shin, C.W. Joo, J.-H. Han, D.-H. Cho, J.W. Huh, S.-Y. Choi, J.-I. Lee, and H.Y. Chu, Appl. Phys. Lett. 100, 133304 (2012). https://doi.org/10.1063/1.3697639
  9. J.-H. Han, J.-I. Lee, J. Lee, D.-H. Cho, J.-W. Shin, Y.S. Kand, S.W. Noh, and H.Y. Chu, presented at IWFPE, Korea, 2010.
  10. S. Möller, S.R. Forrest, J. Appl. Phys. 91, 3324 (2008).
  11. J.-H. Lee, Y.-H. Ho, K.-Y. Chen, H.-Y. Lin, J.-H. Fang, S.-C. Hsu, J.-R. Lin, and Mao-Kuo Wei, OPTICS EXPRESS 16, 21185 (2008).

피인용 문헌

  1. Controlling the optical efficiency of the transparent organic light-emitting diode using capping layers vol.14, pp.2, 2012, https://doi.org/10.1080/15980316.2013.783512
  2. Transparent OLED Lighting Panel Design Using Two-Dimensional OLED Circuit Modeling vol.35, pp.4, 2012, https://doi.org/10.4218/etrij.13.1912.0020
  3. Random nanostructure scattering layer for suppression of microcavity effect and light extraction in OLEDs. vol.39, pp.12, 2012, https://doi.org/10.1364/ol.39.003527
  4. ITO/metal/ITO anode for efficient transparent white organic light-emitting diodes vol.54, pp.2, 2012, https://doi.org/10.7567/jjap.54.02bc04
  5. White Organic Light Emitting Diodes with a Random Scattering Layer for an Internal Light Extraction vol.5, pp.1, 2012, https://doi.org/10.1149/2.0181601jss