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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 12 — Jun. 8, 2009
  • pp: 10177–10188

Study of optimization of an LCD light guide plate with neural network and genetic algorithm

Chen-Jung Li, Yi-Chin Fang, and Ming-Chia Cheng  »View Author Affiliations

Optics Express, Vol. 17, Issue 12, pp. 10177-10188 (2009)

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This paper proposes an optimization method for designing a prism-pattern LCD light guide plate (LGP) using a neural-network optical model and a real-valued genetic algorithm to achieve excellent luminance uniformity in the exiting light. This newly developed method is proposed as a way of solving the complicated optimization work for non-image optics due to the numbers of ray tracing. First, a neural-network optical model is based on a back-propagation neural network. Then the neural-network optical model is incorporated into a real-valued genetic algorithm to optimize the distribution density of the prism pattern. The results show that the 13-point luminance uniformity reaches an outstanding 92.09%.

© 2009 OSA

OCIS Codes
(220.0220) Optical design and fabrication : Optical design and fabrication
(220.2945) Optical design and fabrication : Illumination design

ToC Category:
Optical Design and Fabrication

Original Manuscript: March 24, 2009
Revised Manuscript: May 10, 2009
Manuscript Accepted: May 22, 2009
Published: June 3, 2009

Chen-Jung Li, Yi-Chin Fang, and Ming-Chia Cheng, "Study of optimization of an LCD light guide plate with neural network and genetic algorithm," Opt. Express 17, 10177-10188 (2009)

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  1. H.-S. Ha, “Backlight Unit for Liquid Crystal Display,” US Patent Application Publication, Pub. No.: US 2005/0073828 A1 (2005).
  2. T. Ishikawa, “Surface Light Source Device of Side Light Type Having Diffusing Element with Improved Distribution Pattern of Light,” US Patent 5921651 (1999).
  3. E. Yagani, T. Fukunishi, O. Shoji, and N. Yoshida, “Back Lighting Device for a Liquid Crystal Panel,” US Patent 4937709 (1990).
  4. T.-C. Yu, C. Leu, and G.-L. Chen, “Light Guide Plate,” US Patent 6979112 (2005).
  5. J.-G. Chang, C.-Y. Lin, C.-C. Huang, and R.-J. Yang, “Optical Design and Analysis of LCD Backlight Units Using ASAP,” Opt. Eng. Mag. 82, 75–89 (2003).
  6. C.-J. Li, Y.-C. Fang, W.-T. Chu, and M.-C. Cheng, “Design of a Prism Light-guide Plate for an LCD Backlight Module,” J. Soc. Inf. Disp. 16(4), 545–550 (2008). [CrossRef]
  7. R. L. Haupt, and S. E. Haupt, Practical Genetic Algorithms (Wiley John & Sons, 2004).
  8. L. Davis, Handbook of Genetic Algorithms (Van Nostrand Reinhold, 1991).
  9. S. Haykin, Neural Networks: A Comprehensive Foundation (Prentice Hall, 1999).
  10. A. A. Adewuya, New Methods in Genetic Search with Real-valued Chromosomes, Master’s Thesis (MIT, 1996).
  11. C.-J. Li, Y.-C. Fang, W.-T. Chu, and M.-C. Cheng, “Optimization of Light Guide Plate with Microstructures for Extra Light Modern Backlight Module,” Jpn. J. Appl. Phys. 47(8), 6683–6687 (2008). [CrossRef]
  12. D. E. Rumelhart, and J. L. McClelland, Parallel Distributed Processing: Explorations in the Microstructure of Cognition: Foundations (MIT Press, 1986).

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