期刊
IEEE ELECTRON DEVICE LETTERS
卷 37, 期 5, 页码 615-617出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LED.2016.2547877
关键词
Flexible display; light-emitting diodes (LEDs); thermal management; yttria-stabilized zirconia; polyimide
资金
- Basic Science Research Program through National Research Foundation of Korea (NRF) - Ministry of Education [2015R1A6A1A03031833, NRF-2015R1D1A3A01019050, NRF-2014R1A6A1030419]
We demonstrate flip-chip light-emitting diodes (FC-LEDs) on a flexible yttria-stabilized zirconia (YSZ) substrate and compare them with FC-LEDs on a polymeric substrate. Degradation of luminescence intensity and red-shift of peak wavelength are not observed for the LED on the flexible YSZ, unlike one on the polyimide substrate, due to improved capability to remove the generated heat from the chip to the substrate. Thermal distribution measurements and finite-element simulations show improved thermal management by the flexible ceramic as compared with previously developed flexible LEDs on polymeric substrates. The results present an improved solution to high power operation of flexible LEDs.
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