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공태원(Taewon Gong),최규진(Gyu Jin Choi),권진혁(Jin Hyuk Kwon),박인식(In Shik Park),이선묵(Sunmook Lee),우동진(DongJin Woo),곽진석(Jin Seog Gwag) 한국표면공학회 2014 한국표면공학회지 Vol.47 No.5
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 ∧-shaped window color mixing bar.