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.

PDF Article

References

  • View by:
  • |

  1. M. Tjahjadi, G. Hay, D. J. Coyle, and E. G. OlczakAdvances in LCD backlight film and plate technologyInformation Display200610062227
  2. J.-H. Lee, H.-S. Lee, B.-K. Lee, W.-S. Choi, H.-Y. Choi, and J.-B. YoonSimple liquid crystal display backlight unit comprising only a single-sheet micropatterned polydimethylsiloxane (PDMS) light-guide plateOpt. Lett.20073226652667
  3. G.-J. Park, Y.-G. Kim, J.-H. Yi, J.-H. Kwon, J.-H. Park, S.-H. Kim, B.-K. Kim, J.-K. Shin, and H.-S. SohEnhancement of the optical performance by optimization of optical films in direct-illumination LCD backlightJ. Opt. Soc. Korea200913152157
  4. E. S. Choi, Y. H. Choi, and Y. J. ShinLight Manipulation in a Transparent Medium with Laser-Patterned Three-Dimensional and Surface ScatterersJ. Korean Phys. Soc.20095526462649
  5. S.-T. Hur, S.-W. Choi, and M. LeeAn edge-lit backlight unit for small portable liquid crystal displays with a newly designed single pyramid sheetJ. Korean Phys. Soc.201158392395
  6. S. H. Park, S. S. Lee, H. J. Ma, E. S. Choi, and Y. J. ShinSimulation of luminance and uniformity of LGP according to the laser scattering patternKorean J. Opt. Photon.201021225229
  7. S. T. Hur, S.-W. Choi, and M. LeeAn edge-lit backlight unit for small portable liquid crystal displays with a newly designed single pyramid sheetJ. Korean Phys. Soc.201158392395
  8. J. S. Seo, T. E. Yeom, and J.-H. KoExperimental and simulation study of the optical performances of a wide grid polarizer as a luminance enhancement film for LCD back-light applicationsJ. Opt. Soc. Korea201216151156
  9. J. H. Kwon, H. J. Jun, J. S. Gwag, and H. S. LeeEffect of wavelength-dependent scattering on the color chromaticity of the LCD backlightJ. Opt. Soc. Korea201317275278
  10. B.-Y. Joo and J.-H. KoAnalysis of color uniformity of white LED lens packages for direct-lit LCD backlight applicationsJ. Opt. Soc. Korea201317506512
  11. G.-W. Yoon, H.-D. Kim, J. Yeon, and J.-B. YoonNovel buried inverse-trapezoidal micropattern for dual-sided light extracting backlight unitOpt. Express20142232440
  12. B.-Y. Joo and J.-H. KoSimulation study of injection-molded light guide plates for improving luminance uniformity based on the measured replication quality of micro patterns for LED TV backlightJ. Opt. Soc. Korea201519159164
  13. K. TakemuraSurface light source device, liquid crystal display device, and mobile deviceUS2014111743A1;JP2014130832

Other (13)

M. Tjahjadi, G. Hay, D. J. Coyle, and E. G. OlczakAdvances in LCD backlight film and plate technologyInformation Display200610062227

J.-H. Lee, H.-S. Lee, B.-K. Lee, W.-S. Choi, H.-Y. Choi, and J.-B. YoonSimple liquid crystal display backlight unit comprising only a single-sheet micropatterned polydimethylsiloxane (PDMS) light-guide plateOpt. Lett.20073226652667

G.-J. Park, Y.-G. Kim, J.-H. Yi, J.-H. Kwon, J.-H. Park, S.-H. Kim, B.-K. Kim, J.-K. Shin, and H.-S. SohEnhancement of the optical performance by optimization of optical films in direct-illumination LCD backlightJ. Opt. Soc. Korea200913152157

E. S. Choi, Y. H. Choi, and Y. J. ShinLight Manipulation in a Transparent Medium with Laser-Patterned Three-Dimensional and Surface ScatterersJ. Korean Phys. Soc.20095526462649

S.-T. Hur, S.-W. Choi, and M. LeeAn edge-lit backlight unit for small portable liquid crystal displays with a newly designed single pyramid sheetJ. Korean Phys. Soc.201158392395

S. H. Park, S. S. Lee, H. J. Ma, E. S. Choi, and Y. J. ShinSimulation of luminance and uniformity of LGP according to the laser scattering patternKorean J. Opt. Photon.201021225229

S. T. Hur, S.-W. Choi, and M. LeeAn edge-lit backlight unit for small portable liquid crystal displays with a newly designed single pyramid sheetJ. Korean Phys. Soc.201158392395

J. S. Seo, T. E. Yeom, and J.-H. KoExperimental and simulation study of the optical performances of a wide grid polarizer as a luminance enhancement film for LCD back-light applicationsJ. Opt. Soc. Korea201216151156

J. H. Kwon, H. J. Jun, J. S. Gwag, and H. S. LeeEffect of wavelength-dependent scattering on the color chromaticity of the LCD backlightJ. Opt. Soc. Korea201317275278

B.-Y. Joo and J.-H. KoAnalysis of color uniformity of white LED lens packages for direct-lit LCD backlight applicationsJ. Opt. Soc. Korea201317506512

G.-W. Yoon, H.-D. Kim, J. Yeon, and J.-B. YoonNovel buried inverse-trapezoidal micropattern for dual-sided light extracting backlight unitOpt. Express20142232440

B.-Y. Joo and J.-H. KoSimulation study of injection-molded light guide plates for improving luminance uniformity based on the measured replication quality of micro patterns for LED TV backlightJ. Opt. Soc. Korea201519159164

K. TakemuraSurface light source device, liquid crystal display device, and mobile deviceUS2014111743A1;JP2014130832

Cited By

OSA participates in Crossref's Cited-By Linking service. Citing articles from OSA journals and other participating publishers are listed here.