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	Talbot grating for color separation in color liquid crystal display
	Yan Zhang ; Qiaofeng Tan ; Yingbai Yan ; Guofan Jin
	2010-05-10 ; 2010-05-10
会议名称	Proceedings of the SPIE - The International Society for Optical Engineering ; Holography and Diffractive Optics III ; Beijing, China ; INSPEC
关键词	Practical Theoretical or Mathematical/ colour displays diffraction gratings liquid crystal displays optical filters Talbot effect/ color separation color liquid crystal display backlight unit liquid crystal display panel light throughput color LCD light efficiency color filter three-step Talbot grating fractional Talbot effect uniform plane wave RGB wavelengths/ A4280C Spectral and other filters A4280B Spatial filters, zone plates, and polarizers A4280F Gratings, echelles B7260 Display technology B4150D Liquid crystal devices B4190F Optical coatings and filters
中文摘要	The backlight unit should be used to illuminate the liquid crystal display (LCD) panel, and the typical light throughput is around 5% for the color LCDs. This insufficient light efficiency is predominantly related to the use of the color filter. In this paper, a three-step Talbot grating based on the fractional Talbot effect to realize the color separation in the color LCD is proposed in order to increase the light efficiency. Simulation shows that, when the incident light is a uniform plane wave, the light efficiency of 85% is obtained, which is far higher than that of using color filter's 33% theoretically. This design is insensitive to the displacement along the direction of the movement of color separation plane and the change of RGB wavelengths, and it is also insensitive to the grating's steps height. In addition, the Talbot grating is feasible for fabrication.
会议录出版者	SPIE - The International Society for Optical Engineering ; USA
语种	英语 ; 英语
内容类型	会议论文
源URL	[http://hdl.handle.net/123456789/19390]
专题	清华大学
推荐引用方式 GB/T 7714	Yan Zhang,Qiaofeng Tan,Yingbai Yan,et al. Talbot grating for color separation in color liquid crystal display[C]. 见:Proceedings of the SPIE - The International Society for Optical Engineering, Holography and Diffractive Optics III, Beijing, China, INSPEC.

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