OSA's Digital Library

Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 9 — May. 5, 2014
  • pp: 11175–11181

Reflective composite sheet design for LCD backlight recycling

Taehyung Kim, Kibeom Kim, Eun Soo Lee, Won Young Jeong, Dae Young Lim, and Suk-Won Choi  »View Author Affiliations

Optics Express, Vol. 22, Issue 9, pp. 11175-11181 (2014)

View Full Text Article

Enhanced HTML    Acrobat PDF (1689 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



We have designed a reflective composite sheet consisting of a birefringent polymer matrix and isolated isotropic or minimally birefringent fibers. The optical properties of the sheet have been investigated in terms of the width, spacing, and thickness of the individual fibers. Commercial software (FDTD Solution) was used to simulate the reflectance of the proposed sheet, and conventional processes such as cast-film extrusion in combination with solid-state drawing were used to manufacture the multilayer composite sheet. The measured and simulated reflectance spectra confirm the feasibility of employing the sheet as a reflective polarizer.

© 2014 Optical Society of America

OCIS Codes
(120.2040) Instrumentation, measurement, and metrology : Displays
(230.0230) Optical devices : Optical devices
(230.3720) Optical devices : Liquid-crystal devices

ToC Category:
Optical Devices

Original Manuscript: March 18, 2014
Revised Manuscript: April 21, 2014
Manuscript Accepted: April 21, 2014
Published: May 1, 2014

Taehyung Kim, Kibeom Kim, Eun Soo Lee, Won Young Jeong, Dae Young Lim, and Suk-Won Choi, "Reflective composite sheet design for LCD backlight recycling," Opt. Express 22, 11175-11181 (2014)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. G. H. Kim, W. J. Kim, S. M. Kim, J. G. Son, “Analysis of thermo-physical and optical properties of a diffuser using PET/PC/PBT copolymer in LCD backlight units,” Displays 26(1), 37–43 (2005). [CrossRef]
  2. G. H. Kim, “A PMMA composite as an optical diffuser in a liquid crystal display backlighting unit (BLU),” Eur. Polym. J. 41(8), 1729–1737 (2005). [CrossRef]
  3. H. P. Kuo, M. Y. Chuang, C. C. Lin, “Design correlations for the optical performance of the particle-diffusing bottom diffusers in the LCD backlight unit,” Powder Technol. 192(1), 116–121 (2009). [CrossRef]
  4. T. Kim, S. Kim, D. Y. Lim, S.-W. Choi, “A novel diffuser sheet comprising nanosized birefringent fibers embedded within an isotropic polymer matrix,” Opt. Commun. 295, 125–128 (2013). [CrossRef]
  5. B.-Y. Joo, D.-H. Shin, “Design guidance of backlight optic for improvement of the brightness in the conventional edge-lit LCD backlight,” Displays 31(2), 87–92 (2010). [CrossRef]
  6. G. R. Bird, M. Parrish., “The wire grid as a near-infrared polarizer,” J. Opt. Soc. Am. 50(9), 886–891 (1960). [CrossRef]
  7. M. Xu, H. P. Urbach, D. de Boer, H. Cornelissen, “Wire-grid diffraction gratings used as polarizing beam splitter for visible light and applied in liquid crystal on silicon,” Opt. Express 13(7), 2303–2320 (2005). [CrossRef] [PubMed]
  8. J.-S. Seo, T.-E. Yeom, J.-H. Ko, “Experimental and simulation study of the optical performances of a wide grid polarizer as a luminance enhancement film for LCD backlight applications,” J. Opt. Soc. Kor. 16(2), 151–156 (2012). [CrossRef]
  9. B. Fan, S. Vartak, J. N. Eakin, S. M. Faris, “Broadband polarizing films by photopolymerization-induced phase separation and in situ swelling,” Appl. Phys. Lett. 92(6), 061101 (2008). [CrossRef]
  10. H. Jagt, Y. Dirix, R. Hikmet, C. Bastiaansen, “Linear polarizers based on polymer blends: Oriented blends of poly(ethylene-2,6-naphthalenedicarboxylate) and a poly(styrene/methylmethacrylate) copolymer,” Jpn. J. Appl. Phys. 37(8), 4389–4392 (1998). [CrossRef]
  11. K. Totani, H. Hayashi, T. Watanabe, “Scattering-type polarizers consisting of fiber/matrix and methods to enhance polarization property,” Jpn. J. Appl. Phys. 48(8), 082403 (2009). [CrossRef]
  12. M. F. Weber, C. A. Stover, L. R. Gilbert, T. J. Nevitt, A. J. Ouderkirk, “Giant birefringent optics in multilayer polymer mirrors,” Science 287(5462), 2451–2456 (2000). [CrossRef] [PubMed]
  13. J. M. Jonza, M. F. Weber, A. J. Ouderkirk, and C. A. Stover, “Polarizing beam-splitting optical component,” U.S. Patent, 5962114, October 5 (1999).
  14. Y. Li, T. X. Wu, S.-T. Wu, “Design optimization of reflective polarizers for LCD backlight recycling,” J. Disp. Tech. 5(8), 335–340 (2009). [CrossRef]
  15. M. E. Denker, A. T. Ruff, K. Derks, J. N. Jackson, W. W. Merrill, “Advanced polarizer film for improved performance of liquid crystal displays,” SID Int. Symp. Dig. Tech. Pap.37, 1528–1530 (2006).
  16. M.-Y. Yu, B.-W. Lee, J. H. Lee, J.-H. Ko, “Correlation between the optical performance of the reflective polarizer and the structure of LCD backlight,” J. Opt. Soc. Kor. 13(2), 256–260 (2009). [CrossRef]
  17. B.-W. Lee, M.-Y. Yu, J.-H. Ko, “Dependence of the gain factor of the reflective polarizer on the configuration of optical sheets,” J. Inf. Disp. 10(1), 28–32 (2009). [CrossRef]
  18. F. L. Pedrotti, L. S. Pedrotti, and L. M. Pedrotti, Introduction to Optics (Prentice Hall, 2006), Chap. 22.

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited