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Conferences > CLEO_SI > 2012 > CW1L > CW1L.4

Improvement of Angular-dependent CCT Uniformity by ZrO2 Nano-particles in Remote Phosphor White LEDs

H. C. Chen, K. J. Chen, C. H. Wang, H. H. Tsai, C. C. Lin, M. H. Shih, and H. C. Kuo

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Abstract

The superior uniformity of angular-dependent CCT white LEDs have been investigated by ZrO2-type remote phosphor structure. This novel structure reduces angular-dependent CCT deviations from 1000K to 420K in range of −70 to 70 degrees.

© 2012 Optical Society of America

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