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http://dx.doi.org/10.1080/15980316.2011.621307

Indirect estimation of the reflection distribution function of the scattering dot patterns on a light guide plate for edge-lit LED backlight applications  

Jeong, Su-Seong (Department of Physics, Hallym University)
Jeong, Yong-Woong (Department of Physics, Hallym University)
Park, Min-Woo (Department of Physics, Hallym University)
Kim, Su-Jin (Department of Physics, Hallym University)
Kim, Jae-Hyun (Department of Physics, Hallym University)
Ko, Jae-Hyeon (Department of Physics, Hallym University)
Publication Information
Journal of Information Display / v.12, no.4, 2011 , pp. 167-171 More about this Journal
Abstract
The angular distribution of the luminance on each optical component of 40-inch light-emitting diode backlight was measured and studied, using the optical-simulation method. Several scattering functions were investigated as the reflection distribution function of the scattering dots printed on the bottom surface of the light guide plate (LGP). It was found that both the diffuse Lambertian and near-specular Gaussian scattering functions were necessary for the successful reproduction of the experimental angular distribution of the luminance. The optimization of the scattering parameters included in these scattering functions led to almost the same luminance distribution as that obtained from the experiment. This approach may be an effective way of indirectly estimating the reflection distribution function of the scattering dots of the LGP, which cannot be made accessible through any other experimental method.
Keywords
backlight unit; light guide plate; reflection distribution function; scattering dot; LED TV (categories: (1) display materials and components; (2) liquid crystal and other non-emissive displays);
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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