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Simulation of Luminance and Uniformity of LGP According to the Laser Scattering Pattern

레이저 가공 산란패턴의 유형에 따른 도광판의 휘도 및 균일도 향상에 관한 전산모사

  • Park, So-Hee (Department of Physics, College of Natural Science, Chosun University) ;
  • Lee, Seung-Suk (Department of Physics, College of Natural Science, Chosun University) ;
  • Ma, Hye-Joon (Department of Physics, College of Natural Science, Chosun University) ;
  • Choi, Eun-Seo (Department of Physics, College of Natural Science, Chosun University) ;
  • Shin, Yong-Jin (Department of Physics, College of Natural Science, Chosun University)
  • 박소희 (조선대학교 자연과학대학 물리학과) ;
  • 이승석 (조선대학교 자연과학대학 물리학과) ;
  • 마혜준 (조선대학교 자연과학대학 물리학과) ;
  • 최은서 (조선대학교 자연과학대학 물리학과) ;
  • 신용진 (조선대학교 자연과학대학 물리학과)
  • Received : 2010.11.08
  • Accepted : 2010.12.01
  • Published : 2010.12.25

Abstract

Laser-induced scatterer patterns in a light guide panel(LGP) have provided partially concentrated light distribution, especially near the light entrance of the LGP. Additional treatments for enhancing performance of the LGP, such as gradually increased processing depth, were also developed, but minor improvement was observed in the fabricated LGP. To solve this problem, we designed a revised scatterer pattern to be inscribed into the LGP using different laser processing depths and different separation distances between patterns. Performance feasibility of the proposed pattern was analyzed with simulation before laser inscription in the LGP. The LGP inscribed with the proposed scatterer patterns contributes improvements in luminance and uniformity of the LGP.

레이저로 가공된 평면산란패턴을 가지는 도광판은 도광판 상부로 방출되는 광이 광원과 가까운 부분에 편중되는 문제로 인해서 전체적인 휘도 분포가 균일하지 않은 문제점을 가지고 있었다. 이를 해결하기 위해 도광판 후면에 레이저를 이용하여 도광판 내부에서 특징적인 기울기를 가지는 산란패턴을 만듬으로써 도광판 상부로 방출되는 광의 균일도를 향상시키고자 하였다. 본 논문에서는 도광판 후면의 산란패턴을 간격과 가공 깊이를 다르게 조절하여 설계하고 이에 따른 도광판의 성능의 차이점을 가공전에 분석하고자 전산모사를 수행하였다. 본 논문에서 제안한 산란패턴을 가지는 도광판은 기존의 도광판의 휘도와 균일도에 비해 높은 향상을 가질 것으로 예상되는 바이다.

Keywords

References

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