한국정보디스플레이학회:학술대회논문집
- 2008.10a
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- Pages.1026-1029
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- 2008
Influence of Substrate Thermal Conductivity on OLED Lifetime
- Chung, Seung-Jun (Dept. of EECS, Seoul National University) ;
- Lee, Jae-Hyun (Dept. of MSE, Seoul National University) ;
- Jeong, Jae-Wook (Dept. of EECS, Seoul National University) ;
- Kim, Jang-Joo (Dept. of MSE, Seoul National University) ;
- Hong, Yong-Taek (Dept. of EECS, Seoul National University)
- Published : 2008.10.13
Abstract
Temperature increase during OLED operation can significantly degrade the device lifetime. By using top-emission OLEDs fabricated on glass and silicon substrates that have different thermal conductivities, we found that efficient heat dissipation and corresponding lifetime improvement can be obtained by making a direct contact between the OLED anode and the high thermally-conductive silicon substrate. We describe substrate-dependent OLED heat dissipation behavior and OLED lifetime improvement by using infrared camera images and constant current stress test methods.