Transient thermal analysis of white organic light-emitting diode for heat-dissipation application

2012 ◽  
Author(s):  
Henglong Yang
2012 ◽  
Vol 33 (6) ◽  
pp. 624-627
Author(s):  
杨连乔 YANG Lian-qiao ◽  
付美娟 FU Mei-juan ◽  
魏斌 WEI Bin ◽  
张建华 ZHANG Jian-hua ◽  
曹进 CAO Jin

2014 ◽  
Vol 2014 ◽  
pp. 1-6
Author(s):  
Yu-Sheng Tsai ◽  
Lin-Ann Hong ◽  
Jian-Ji Huang ◽  
Kuan-Hung Yeh ◽  
Fuh-Shyang Juang

This study uses a synthetic graphite fiber as the heat dissipation substrate for top-emission organic light emitting diode (TEOLED) to reduce the impact from joule heat. UV glue (YCD91) was spin coated onto the substrate as the insulation layer. The TEOLED structure is (glass; copper; graphite) substrate/YCD91 glue/Al/Au/EHI608/TAPC/Alq3/LiF/Al/Ag. The proposed graphite fiber substrate presents better luminous performance compared with glass and copper substrate devices with luminance of 3055 cd/m2and current efficiency of 6.11 cd/A at 50 mA/cm2. When lighting period of different substrates TEOLED, the substrate case back temperature was observed using different lighting periods. A glass substrate element operating from 5 to 25 seconds at 3000 cd/m2luminance produced a temperature rate of 1.207°C/sec. Under 4000 cd/m2luminance the copper and graphite substrate temperature rates were 0.125°C/sec and 0.088°C/sec. Graphite component lifetime was determined to be 1.875 times higher than the glass components and 1.125 times higher than that of copper.


PIERS Online ◽  
2007 ◽  
Vol 3 (6) ◽  
pp. 821-824 ◽  
Author(s):  
Chien-Chang Tseng ◽  
Liang-Wen Ji ◽  
Yu Sheng Tsai ◽  
Fuh-Shyang Juang

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