Light guide plate having orthogonal stresses or strains and...

Details Light guide plate having orthogonal stresses or strains and... Light guide plate having orthogonal stresses or strains and...

2006-07-17

2010-10-05

Lee, Jong-Suk (James) (Department: 2885)

Illumination

With polarizer

C362S606000, C362S626000

Reexamination Certificate

active

07806537

ABSTRACT:
A backlight module includes a light guide plate (52), a light source (51), a reflecting sheet (53), a diffusion sheet (54), and a reflective polarizing beam splitter (57). The light guide plate includes a light input surface (521), a light output surface (522) adjacent to the light input surface, a reflecting surface (523) opposite the light output surface, and a number of microstructures (524) located on the reflecting surface. In the light guide plate, stress-induced birefringence is introduced to achieve a polarization state conversion, thereby facilitating efficient use of the light generated by the light source.

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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 (Clean Copy).
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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