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Analysis of Color Uniformity of White LED Lens Packages for Direct-lit LCD Backlight Applications
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  • Analysis of Color Uniformity of White LED Lens Packages for Direct-lit LCD Backlight Applications
  • Analysis of Color Uniformity of White LED Lens Packages for Direct-lit LCD Backlight Applications
저자명
Joo. Byung-Yun,Ko. Jae-Hyeon
간행물명
Journal of the Optical Society of Korea
권/호정보
2013년|17권 6호|pp.506-512 (7 pages)
발행정보
한국광학회
파일정보
정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
서지반출

기타언어초록

Recently, the color separation issue of wide-spreading white LEDs has attracted attention due to their wide applicability as light sources in direct-lit LCD backlights. These wide-spreading LED packages usually consist of LED chips, a color-conversion phosphor layer, and a light-shaping lens. The technical aspect of this color issue was related to a method for balancing the yellow spectral component emitting from phosphors with respect to the blue one from the LED chip as a function of viewing angle. In this study, we suggested an approach for carrying out quantitative analysis for the color separation problem occurring in wide-spreading LED packages by optical simulation. In addition, the effect of an internal scattering layer on the color uniformity was investigated, which may be considered as a potential solution for this problem.