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J. Korean Ceram. Soc. > Volume 50(6); 2013 > Article
Journal of the Korean Ceramic Society 2013;50(6): 454.
doi: https://doi.org/10.4191/kcers.2013.50.6.454
백색 LED용 저 연화점 유리를 이용한 색 변환 렌즈의 제조 조건에 따른 광 특성
채유진, 이미재, 황종희, 임태영, 김진호, 정희석1, 이영식2, 김득중3
한국세라믹기술원 광디스플레이소재팀
1조명연구원 연구개발본부 융합디자인팀
2솔레즈 연구소
3성균관대학교 신소재공학과
Optical Properties as Process Condition of Color Conversion Lens Using Low-softening Point Glass for White LED
Yoo-Jin Chae, Mi-Jai Lee, Jong-Hee Hwang, Tae-Young Lim, Jin-Ho Kim, Hee-Suk Jeong1, Young-Sik Lee2, Deug-Joong Kim3
Korea Institute of Ceramic Engineering and Technology, Optic & Display Material Team
1Korea Institute of Lighting Technology, Convergent Design Team
2Solleds Co. Ltd., R&D Center
3Department of Materials science and Engineering, Sungkyunkwan University
ABSTRACT
Recently, remote phosphors have been reported for application to white LEDs to provide enhanced phosphor efficiency compared with conventional phosphor-based white LEDs. In this study, a remote phosphor was produced by coating via screen printing on a glass substrate with different numbers of phosphor coating. The paste consists of phosphor, lowest softening glass frits, and organic binders. The remote phosphor could be well controlled by varying the phosphor content rated paste. After mounting the remote phosphor on top of a blue LED chip, CCT, CRI, and luminance efficiency were measured and values of 5300 K, 62, and 117 lm/W were respectively obtained in the 80 wt% phosphor with 3 coating layers sintered at $800^{circ}C$.
Key words: Color conversion lens, Glass frit, Phosphor, Screen printing, White LED
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