질화갈륨계 발광소자 봉지재의 굴절률 및 곡률 변화에 따른 광 출력 특성 연구

다국어 초록 (Multilingual Abstract)

In this paper, we improved the light extraction efficiency by structural change of LEDs on conventional LEDs. We simulated the LEDs light emission as functions of LED side wall angle, various refractive indices the geometrical structures and analyzed the condition improved the light efficiency. We present the results of experimerns and simulations for light output power from LEDs for various refractive indices and the geometrical structures of the LED encapsulants. When the side wall angle range was from 40[°] to 30[°], the LED emission increased. LED side wall angle onto LED using the simulation system with a fine tuning of the structure of the LEDs side wall angle is fabricated. Additionally, we changed the side wall angle of LED package with spherical structure and flat structure. The result of spherical structure ray tracting is higher compared with flat structure about 14[%].

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. LED 패키지 시뮬레이션 설계 및 고찰
• 3. LED 패키지 제작 및 고찰
• 4. 결론
• 감사의 글
• References
• 저자소개

참고문헌 (Reference)

1 홍대운, "율적인 라인램프를 위한 발광다이오드-광섬유 결합기의 설계 및 해석" 한국광학회 21 (21): 26-32, 2010

2 한정아, "고출력 LED 모델링 및 광학적 특성 분석" 한국광학회 18 (18): 111-116, 2007

3 "“Light Emitting Diodes (LEDs) for Generating Illumination,” OIDA Technology Road Map Update 2002"

4 S. H. Jang, "LED industry trends and direction of policy initiatives" 31 : 9-14, 2009

5 M. W. Lee, "LED Optical Design for Asymmetrical Light Distribution Realization" 9 (9): 67-, 2009

6 N. Ohta, "Colorimetry: Fundamentals and Applications, Chapter 3" John Wiley & Sons 2005

7 Manning Fan, "Color Filter-less Technology of LED Back Light for LCD-TV" 6841 : 68410G1-68410G6, 2007