A new method for monitoring an OLED panel for lighting by sensing the wave-guided light

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...

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Bibliographic Details
Published inJournal of Information Display Vol. 13; no. 3; pp. 119 - 123
Main Authors Han, Jun-Han, Moon, Jaehyun, Shin, Jin-Wook, Joo, Chul Woong, Cho, Doo-Hee, Hwang, Joohyun, Huh, Jin Woo, Chu, Hye Yong, Lee, Jeong-Ik
Format Journal Article
LanguageEnglish
Published Taylor & Francis 01.09.2012
한국정보디스플레이학회
Subjects
degradation
monitoring system
organic light-emitting device
photo diode
wave-guided light
전기공학
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ISSN1598-0316
2158-1606
DOI10.1080/15980316.2012.711260

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Summary: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.
Bibliography:G704-002168.2012.13.3.002
ISSN:1598-0316
2158-1606
DOI:10.1080/15980316.2012.711260