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http://dx.doi.org/10.5695/JKISE.2014.47.5.233

Optical Design of Light Guide Plate Material for Slim Liquid Crystal Display  

Gong, Taewon (Department of Physics, Yeungnam University)
Choi, Gyu Jin (Department of Physics, Yeungnam University)
Kwon, Jin Hyuk (Department of Physics, Yeungnam University)
Park, In Shik (Hanwool Information Tech.)
Lee, Sunmook (Korea Conformity Laboratories)
Woo, DongJin (Korea Conformity Laboratories)
Gwag, Jin Seog (Department of Physics, Yeungnam University)
Publication Information
Journal of the Korean institute of surface engineering / v.47, no.5, 2014 , pp. 233-238 More about this Journal
Abstract
In this paper, in order to achieve slim and light liquid crystal display, we examine the optical conditions that can obtain uniform light with higher optical efficiency over whole light guide plate (LGP) through simulation. Furthermore, to overcome the issues of hot spot in front of red, green, and blue light emitting diodes (RGB LEDs) source and non-uniform color mixing, we propose four shaped color mixing bars tied up with the LGP and check the optical characteristics of the LGP with them by simulation. Consequently, we could know the optical conditions of improving optical efficiency and optical uniformity in the LGP through the optical design. Also we confirmed that the issues of the hot spot and non-uniform color mixing in edge type LED could be solved by using the ${\bigwedge}$-shaped window color mixing bar.
Keywords
Backlight; Light guide plate; Liquid crystal display; Color mixing;
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