Light guide device and backlight module therewith

Details Light guide device and backlight module therewith Light guide device and backlight module therewith

2006-07-17

2010-02-16

Ton, Anabel M (Department: 2885)

Illumination

With polarizer

C362S606000, C362S626000

Reexamination Certificate

active

07661833

ABSTRACT:
A light guide device (52) includes a light guide substrate (520) and a sub-wavelength grating (527). The light guide substrate has a light input surface (521), a light output surface (522) adjacent to the light input surface (521), a bottom surface (523) opposite to the light output surface (522). In the light guide plate, stress-induced birefringence is introduced to achieve the polarization state conversion. The SWG527located on the light output surface includes a top layer (525) and a bottom layer (526). The SWG527is configured to work as a reflective polarizing beam splitter, consistent with the principle of rigorous coupled-wave theory.

REFERENCES:
patent: 7237940 (2007-07-01), Yu et al.
patent: 2005/0195487 (2005-09-01), Yu et al.
patent: 2006/0007700 (2006-01-01), Hsu et al.
patent: 2006/0285359 (2006-12-01), Yang et al.
patent: 2007/0076432 (2007-04-01), Yang et al.
patent: 9-258221 (1997-10-01), None
patent: 2004-318038 (2004-11-01), None
Ko-Wei Chien and Han-Ping D. Shieh; Design and Fabrication of an Integrated Polarized Light Guide for Liquid-Crystal-Display Illumination; pp. 1830-1834, vol. 43, No. 9, Applied Optics 2004.
Xingpeng Yang, Yingbai Yan and Guofan Jin; Polarized Light-Guide Plate for Liquid Crystal Display; pp. 8349-8356, vol. 13, No. 21, Optics Express 2005.

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