Browsing by Author "Chen, Cho-Chih"

Now showing 1 - 2 of 2

LED light lit for field-sequential-color backlight system
(2007)
Chien, Ming-Chin
;
Chen, Cho-Chih
;
Yang, Su-Chin
;
Lu, Yen-Hsing
;
Kuo, Hao-Chung
A 7-inch backlight module consisting of ten isolated micro-structured linear light pipes and two side-collimating bars was developed with serial full-color Light Emitting Diodes (LEDs) as light source for a field-sequential-color liquid-crystal display (FSC-LCD) system. The collimating lighting system not only yields a narrow angular light distribution, but also effectively diminishes the occurrence of color dependence in the scanning backlight for FSC applications. For each linear light pipes, only 3. 6 % of optical power leaked out to the neighboring divisions, meanwhile, the divergent angles of extraction light were controlled to +/- 17 degrees and +/- 31 degrees at two orthogonal directions respectively.
Region-partitioned LED backlight design for field sequential color LCD
(2007)
Chien, Ming-Chin
;
Tien, Chung-Hao
;
Chen, Cho-Chih
;
Lu, Yen-Hsing
;
光電工程學系
In this paper, a 7-inch backlight module consisting of ten isolated micro-structured linear light pipes and two side-collimating bars was developed with serial full-color LEDs as light sources for a field-sequential-color liquid-crystal display (FSC-LCD) system. The collimating lighting system not only yields a narrow angular light distribution, but also effectively diminishes color dependence in the scanning backlight for FSC applications. The crosstalk of the light from each linear light pipe leaking out to the neighboring divisions was measured; meanwhile, the divergent angles of extraction light were well controlled to about +/- 17 degrees and +/- 30 degrees at two orthogonal directions respectively.