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논문 기본 정보

자료유형
학술대회자료
저자정보
김덕기 (광기술원) 강소라 (광기술원) 이광철 (광기술원)
저널정보
한국소성·가공학회 금형가공 심포지엄 2014년도 제11회 금형가공 심포지엄
발행연도
2014.8
수록면
80 - 84 (5page)

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The emission-adaptive phosphor layer was fabricated by self-exposure method to realize the pc-white LED. The effect of phosphor layer forming parameters such as phosphor content and exposure time on the phosphor layer shape and LED characteristics was investigated. Through the fabrication process of phosphor layer, two types of phosphor layer shape were fabricated by phosphor layer forming parameters. In the case of low exposure intensity and/or short exposure time with high phosphor content, the conformal coating shape phosphor layer which is imitative of the irradiance pattern of an LED chip was formed, whereas in the long exposure time with low phosphor content, the light distribution proportional shape phosphor layer which reflects the near-filed pattern of an LED chip was formed. As a result of analysis of LED characteristics, as phosphor content and exposure time respectively decreased CCT increased. In the case of luminous efficacy as exposure time decreased luminous efficacy increased irrespective of phosphor content due to the photon scattering loss of phosphor particles in the thick phosphor layer. Also as exposure time increased the thickness of phosphor layer increased. It was concluded that the optimum condition for high luminous efficacy white LED is shorter exposure time for thin phosphor coating layer under adequate phosphor content.

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Abstract
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2. 실험 내용
3. 실험 결과
4. 결론
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UCI(KEPA) : I410-ECN-0101-2017-551-000838174