High-efficiency integrated polarized backlight systemfor liquid crystal display

We propose a multiwavelength polarized backlight system (BLS) that is based on the stress-induced birefringence and the multilayer subwavelength grating. The polarized BLS requires no prism sheets and no quarter wave plate. Moreover, because of the high extinction ratio, the rear absorbing polarizer...

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Bibliographic Details
Published in:Applied physics letters 2006-06, Vol.88 (22), p.221109-221109-3
Main Authors: Yang, Xingpeng, Yan, Yingbai, Jin, Guofan
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Summary:We propose a multiwavelength polarized backlight system (BLS) that is based on the stress-induced birefringence and the multilayer subwavelength grating. The polarized BLS requires no prism sheets and no quarter wave plate. Moreover, because of the high extinction ratio, the rear absorbing polarizer of the liquid crystal display panel is not required anymore. The proposed backlight can fully utilize the light, and the intensity at near normal angles is 2.3 times higher than that of a conventional unpolarized light emitting backlight.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2207219