Current Optics and Photonics

Optical Society of Korea (한국광학회)
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Optimization of Ultrathin Backlight Unit by Using a Tapered Light Guide Film Studied by Optical Simulation

  • Joo, Byung-Yun (Department of Mechanical Engineering, Korea University of Technology and Education) ;
  • Ko, Jae-Hyeon (Department of Physics, Hallym University)
  • Received : 2017.01.10
  • Accepted : 2017.02.20
  • Published : 2017.04.25
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Abstract

Optical structures of a tapered ultra-thin light guide film (LGF) were optimized by optical simulation for increasing coupling efficiency between light sources and the LGF. A serration pattern on the entrance side surface could provide a comparable coupling efficiency to that of the conventional LGF where a linear, asymmetric prism array was formed on the taper surface. Several micro-patterns were applied to the top and/or bottom surface of the LGF for achieving better luminance property, and it was found that an optimized micro-pyramid pattern exhibited the highest average luminance together with satisfactory luminance uniformity.

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References

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