Paper Title:
Light Guide Plate Based on Sub-Micron Gratings
  Abstract

A novel light guide plate (LGP) with sub-micron gratings (SMGs) on its upper surface is proposed to control the illumination angle and its initial structure of LGP is given. The periods of SMGs are 0.651μm, 0.516μm and 0.433μm for the LED light sources transmit out vertically with the incidence angle 45º under the total internal reflection condition. The transmission efficiencies vary between 2% and 43% when the depth of grooves of SMGs changes between 0.05 μm and 0.9 μm by using rigorous coupled-wave theory (RCWT). The results show that the LGP utilizing the characteristics of the SMGs can control the transmission angle and get homogeneous output.

  Info
Periodical
Key Engineering Materials (Volumes 364-366)
Edited by
Guo Fan JIN, Wing Bun LEE, Chi Fai CHEUNG and Suet TO
Pages
1061-1065
DOI
10.4028/www.scientific.net/KEM.364-366.1061
Citation
Y. Ye, L. S. Chen, "Light Guide Plate Based on Sub-Micron Gratings", Key Engineering Materials, Vols. 364-366, pp. 1061-1065, 2008
Online since
December 2007
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Price
$32.00
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