Transactions of the Society of Information Storage Systems (정보저장시스템학회논문집)

The Society of Information Storage Systems (정보저장시스템학회)
권호 표지
DOI QR코드

DOI QR Code

Design of Light Guide Plate to Improve Optical Characteristics for Large-Area Edge-lit LED Display

대면적 엣지형 LED 디스플레이의 광특성 향상을 위한 도광판설계

  • Received : 2013.03.19
  • Accepted : 2013.03.25
  • Published : 2013.03.25
Download PDF
⟨ Previous Next ⟩

Abstract

Through the rapid development of LED TV, a large-area edge-lit backlight unit is widely researched in the display industry for enhancing the optical efficiency, luminous uniformity and slim design. In addition, an edge-lit backlight unit includes many optical sheets such as reflection sheet, prism sheet and diffuser sheet. However the function can be replaced by the carefully patterned light guide plate (LGP). Micro patterns which located on the top and bottom surface of light guide plate was designed by ray-tracing optical simulation. The designed patterns improved the light characteristics of LGP, including optical extraction efficiency and intensity distribution uniformity. These results suggest that it is very effective method to design edge-lit LGP with micro-patterns on both sides for large-area display and to reduce the fabrication cost.

Keywords

References

  1. Di Feng, Yingbai Yan, Xingpeng Yang, Guofan Jin, and Shoushan Fan, 2005, "Novel integrated light-guide plates for liquid crystal display backlight", Journal of Optics A: Pure and Applied Optics, Vol.7, pp.111-117 https://doi.org/10.1088/1464-4258/7/3/003
  2. Young Chul Kim, 2008, "LGP Output Characteristics Depending in BLU Pattern Size", Journal of the Optical Society of Korea, Vol.19, No.1, pp.43-47 https://doi.org/10.3807/HKH.2008.19.1.043
  3. Jee-Gong Chang, and Yu-Bin Fang, 2007, "Dot-pattern design of a light guide in an edge-lit backlight using a regional partition approach", Optical Engineering, Vol.46, No.4, 043002 https://doi.org/10.1117/1.2721423
  4. Young Hyun Ju, Ji-Hee Park, Jeong Ho Lee, Ji-Young Lee, Kie-Bong Nahm et al., 2008, "Study on the Simulation Model for the Optimization of Optical Structures of Edge-lit Backlight for LCD Applications", Journal of the Optical Society of Korea, Vol.12, No.1, pp. 25-30 https://doi.org/10.3807/JOSK.2008.12.1.025
  5. Yun-Mi Lee, Jun Ho Lee, and Eun Chae Jeon, 2010, "A Study on an Integrated Light Guide Plate", Journal of the Optical Society of Korea, Vol.21, No.2, pp. 53-60 https://doi.org/10.3807/KJOP.2010.21.2.053
  6. Jung Ho Lee, Kie-Bong Nahm, Jae-Hyeon Ko, and Joong Hyun Kim, 2010, "Optimization of Optical Structure of Lightguide Panel for Uniformity Improvement of Edge-lit Backlight", Journal of the Optical Society of Korea, Vol.21, No.2, pp. 61-68 https://doi.org/10.3807/KJOP.2010.21.2.061