Talbot grating for color separation in color liquid crystal display

Yan Zhang; Qiaofeng Tan; Yingbai Yan; Guofan Jin

doi:10.1117/12.756747

4 January 2008 Talbot grating for color separation in color liquid crystal display

Yan Zhang, Qiaofeng Tan, Yingbai Yan, Guofan Jin

Proceedings Volume 6832, Holography and Diffractive Optics III; 68320P (2008) https://doi.org/10.1117/12.756747
Event: Photonics Asia 2007, 2007, Beijing, China

Abstract

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.

Citation Download Citation

Yan Zhang, Qiaofeng Tan, Yingbai Yan, and Guofan Jin "Talbot grating for color separation in color liquid crystal display", Proc. SPIE 6832, Holography and Diffractive Optics III, 68320P (4 January 2008); https://doi.org/10.1117/12.756747

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available