Enhancement of Light Extraction Efficiency in Light-Emitting Diodes with Prism-Type Textured Top Surface
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概要
- 論文の詳細を見る
The light extraction efficiency of side-view light-emitting diodes (LEDs) with a textured encapsulant top surface is analyzed theoretically and experimentally. A prism-type textured surface is proposed in order to increase the extraction efficiency, which is calculated by ray-tracing simulations. According to the simulation results, extraction efficiency can be enhanced by up to 35% compared with that of conventional LEDs. By using an imprinting technique to texture the encapsulant top surface, a prism-structure array has been fabricated. The experimental enhancement of light extraction efficiency is 14% for blue LEDs and 10% for white LEDs.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2007-10-15
著者
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Kim Hyunjun
Electronic Materials and Device Lab., Central R&D Institute, Samsung Electro-Mechanics, Suwon 443-743, Korea
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Chang Myung-Whun
Electronic Materials and Device Lab., Central R&D Institute, Samsung Electro-Mechanics, Suwon 443-743, Korea
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Won Hyong
Electronic Materials and Device Lab., Central R&D Institute, Samsung Electro-Mechanics, Suwon 443-743, Korea
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Lee Jong
Electronic Materials and Device Lab., Central R&D Institute, Samsung Electro-Mechanics, Suwon 443-743, Korea
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Won Hyong
Electronic Materials and Device Lab., Central R&D Institute, Samsung Electro-Mechanics, Suwon 443-743, Korea
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Chang Myung-Whun
Electronic Materials and Device Lab., Central R&D Institute, Samsung Electro-Mechanics, Suwon 443-743, Korea
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Lee Jong
Electronic Materials and Device Lab., Central R&D Institute, Samsung Electro-Mechanics, Suwon 443-743, Korea