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http://dx.doi.org/10.3807/KJOP.2019.30.3.101

Optimized Optical Design of LCD Color-matching BLU Using an RGB Light Source  

Jeon, Hwa Jun (Department of Physics, Yeungnam University)
Gwag, Jin Seok (Department of Physics, Yeungnam University)
Kwon, Jin Hyuk (Department of Physics, Yeungnam University)
Publication Information
Korean Journal of Optics and Photonics / v.30, no.3, 2019 , pp. 101-105 More about this Journal
Abstract
An LCD backlight unit (BLU) using RGB light sources is designed and simulated, in order to improve its optical energy efficiency. A color-matching BLU is designed with a lenticular lens array (LLA) with elements that image the linear RGB light sources onto the RGB subpixels of the color filter. Type-A and Type-B simulations are performed, according to the location of the light sources. As a result, the luminance increases to 210% in Type-A and 270% in Type-B respectively. The optimum values for the height and the gap of the LLA for maximum efficiency are found to be $25{\mu}m$ and $3{\mu}m$ respectively.
Keywords
Backlight unit; High efficiency; Color-matching;
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