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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 21 — Oct. 17, 2005
  • pp: 8349–8356

Polarized light-guide plate for liquid crystal display

Xingpeng Yang, Yingbai Yan, and Guofan Jin  »View Author Affiliations


Optics Express, Vol. 13, Issue 21, pp. 8349-8356 (2005)
http://dx.doi.org/10.1364/OPEX.13.008349


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Abstract

A novel polarized light-guide plate (LGP) for the illumination of liquid crystal display is proposed in this paper. For the substrate of the LGP, stress-induced birefringence is introduced to achieve the polarization state conversion. An aluminum sub-wavelength grating (SWG) is designed on the top surface as a polarizing beam-splitter (PBS). The structure of the novel LGP is optimized for three wavelengths of LEDs: 625nm, 533nm and 452nm, and high efficiencies of polarization conversion are obtained. The backlight system with the designed LGP does not require prism sheets and quarter wavelength plate. The backlight with the novel LGP achieved large gain in energy efficiency, and the peak luminous intensity is about 2 times higher than that of a conventional backlight.

© 2005 Optical Society of America

OCIS Codes
(230.1360) Optical devices : Beam splitters
(230.3720) Optical devices : Liquid-crystal devices
(260.5430) Physical optics : Polarization

ToC Category:
Research Papers

History
Original Manuscript: August 30, 2005
Revised Manuscript: September 24, 2005
Published: October 17, 2005

Citation
Xingpeng Yang, Yingbai Yan, and Guofan Jin, "Polarized light-guide plate for liquid crystal display," Opt. Express 13, 8349-8356 (2005)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-13-21-8349


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References

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