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Molecular Crystals and Liquid Crystals Volume 531, 2010 - Issue 1: Proceedings of the 13th International Symposium on Advanced Display Materials and Devices (ADMD2009)
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Original Articles

Destructive Optical Interference of Ambient Light for High Contrast Organic Light-Emitting Diode Using Inorganic Metal Multi-Layer

You-Hyun Kim School of Display Engineering, Hoseo Univeristy, Beabang-Eup Asan-City, Chungnam, South Korea
,
Sang Youn Lee Semiconductor Display Engineering, Hoseo University, Beabang-Eup Asan-City, Chungnam, South Korea
,
Wook Song School of Display Engineering, Hoseo Univeristy, Beabang-Eup Asan-City, Chungnam, South Korea
,
Mei Meng School of Display Engineering, Hoseo Univeristy, Beabang-Eup Asan-City, Chungnam, South Korea
,
Seungjun Yi Semiconductor Display Engineering, Hoseo University, Beabang-Eup Asan-City, Chungnam, South Korea
,
Chul Gyu Jhun School of Display Engineering, Hoseo Univeristy, Beabang-Eup Asan-City, Chungnam, South Korea
&
Woo Young Kim School of Display Engineering, Hoseo Univeristy, Beabang-Eup Asan-City, Chungnam, South Korea; Semiconductor Display Engineering, Hoseo University, Beabang-Eup Asan-City, Chungnam, South Korea; Display Technology Incubation Center, Hoseo University, Beabang-Eup Asan-City, Chungnam, South KoreaCorrespondence[email protected]
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Pages 7/[307]-13/[313] | Published online: 14 Nov 2010
 
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Abstract

We fabricated high contrast red, green, blue organic light-emitting diodes using inorganic metal multi layer (IMML) composed of thin Al, KBr, and thick Al. High contrast OLEDs using IMML were observed to compare with conventional OLEDs with circular polarizer and bare metal-electrode normal OLEDs. Average ambient reflectance of OLEDs using inorganic multi layer, polarizer OLEDs, and normal OLEDs were 18.2, 31.1, and 82.5% respectively. Contrast ratio of inorganic metal multi-layer OLED with red emission and polarizer attached OLED were same as 186:1 especially.

Acknowledgments

This research was supported by a grant (F0004141-2009-31) from Information Display R&D Center, one of the 21st Century Frontier R&D Programs funded by the Ministry of Knowledge & Economics of Korean government.

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