title: Liquid-crystal-modulated correlated color temperature tunable light-emitting diode with highly accurate regulation.
abstract: A precise correlated color temperature (CCT) tuning method for light-emitting diodes (LEDs) has been developed and is demonstrated in this article. By combining LEDs and a liquid crystal (LC) cell, a light source with continuous CCT variation along a straight track on the chromaticity diagram is achieved. Moreover, the manner of CCT variation can be modulated by choosing appropriate LEDs and phosphors to yield a variation going from 3800 K to 6100 K with the track near the black-body locus. By adapting various developed LC technologies for diverse demands, the performance and applications of LEDs can be greatly improved.
authors.forename: Chiu-Chang
authors.initials: CC
authors.lastname: Huang
authors.forename: Yu-Yi
authors.initials: YY
authors.lastname: Kuo
authors.forename: Szu-Hua
authors.initials: SH
authors.lastname: Chen
authors.forename: Wei-Ting
authors.initials: WT
authors.lastname: Chen
authors.forename: Chih-Yu
authors.initials: CY
authors.lastname: Chao