Abstract

The structure of the prism sheet and the reflective polarizer sheet in the direct - illumination liquid crystal display (LCD) backlight is optimized and fabricated. The apex angle of the prism sheet was changed from 90 degree to 96.5 and 101.5 degree and the angular spread of the diffuser films attached on the reflective polarizer sheet was changed from 7 to 1.5 degrees. The measured view angle, the normal luminance, and the contrast ratio from the optimized backlight unit showed improved optical performances.

© 2009 Optical Society of Korea

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  1. M. Stewart, R. S. Howell, L. Pires, and M. K. Hatails, "Polysilicon TFT technology for active matrix OLED displays," IEEE Transactions on electron devices 48, 845-851 (2001)
    [CrossRef]
  2. J. C. Sturm and C. C. Wu, "Integrated organic light emitting diode structures using doped polymer," in Proc. IDRC Annual Meeting (1997), pp. F11-F18
  3. H. Hovagimian and J. Mehlhaff, "Recent advances in rapid thermal processing of polysilicon TFT LCD"s," in Proc. IDRC Annual Meeting (1997), pp. M52
  4. I. K. Kim and K. Y. Chung, "Wide color gamut backlight from three–band white LED," J. Opt. Soc. Korea 11, 67-70 (2007)
    [CrossRef]
  5. A. Tagaya, S. Ishii, K. Yokoyama, Higuchi E, and Koike Y, "The advanced highly scattering optical transmission polymer backlight for liquid crystal," Jpn. J. Appl. Phys. 41, 2241-2248 (2002)
    [CrossRef]
  6. G. H. Kim, "A PMMA composite as an optical diffuser in a liquid crystal display backlight unit (BLU)," European Polymer Journal 41, 1729-1737 (2005)
    [CrossRef]
  7. G. J. Park, T. S. Aum, D. H. Lee, J. H. Kwon, M. H. Lee, B. K. Jung, and H. S. Soh, "Enhancement of luminance and view angle by optimizing the structure of prism sheet and the diffusivity of reflective polarizer film," in Proc. IDW Annual Meeting (Otsu, Japan, Dec. 2006), pp. 953-955
  8. Y. H. Ju, J. H. Park, J. H. Lee, J. Y. Lee, K. B. Nahm, J. H. Ko, and J. H. Kim, "Study on the simulation model for the optimization of optical structures of edge–lit backlight for LCD applications," J. Opt. Soc. Korea 12, 25-30 (2008)
    [CrossRef]
  9. G. J. Park, T. S. Aum, J. H. Kwon, J. H. Park, B. K. Kim, and J. K. Shin, "Characterization and modeling light scattering in diffuser sheets," J. Korean Phys. Soc. 54, 44-48 (2009)
  10. M. Edward, M. B. O"Neill, and D. L. Wortman, US Patent 6091547 (2000)
  11. A. C. Hamilton and J. Courtial, "Optical properties of a dove-prism sheet," J. opt. A: Pure and applied optics 10, 125302-125307 (2008)
    [CrossRef]
  12. A. Abileah and ND Vergith, "Liquid crystal display with holographic diffuser and prism sheet on viewer side," U.S. patent 5629784 (1997)

2009 (1)

G. J. Park, T. S. Aum, J. H. Kwon, J. H. Park, B. K. Kim, and J. K. Shin, "Characterization and modeling light scattering in diffuser sheets," J. Korean Phys. Soc. 54, 44-48 (2009)

2008 (2)

A. C. Hamilton and J. Courtial, "Optical properties of a dove-prism sheet," J. opt. A: Pure and applied optics 10, 125302-125307 (2008)
[CrossRef]

Y. H. Ju, J. H. Park, J. H. Lee, J. Y. Lee, K. B. Nahm, J. H. Ko, and J. H. Kim, "Study on the simulation model for the optimization of optical structures of edge–lit backlight for LCD applications," J. Opt. Soc. Korea 12, 25-30 (2008)
[CrossRef]

2007 (1)

I. K. Kim and K. Y. Chung, "Wide color gamut backlight from three–band white LED," J. Opt. Soc. Korea 11, 67-70 (2007)
[CrossRef]

2006 (1)

G. J. Park, T. S. Aum, D. H. Lee, J. H. Kwon, M. H. Lee, B. K. Jung, and H. S. Soh, "Enhancement of luminance and view angle by optimizing the structure of prism sheet and the diffusivity of reflective polarizer film," in Proc. IDW Annual Meeting (Otsu, Japan, Dec. 2006), pp. 953-955

2005 (1)

G. H. Kim, "A PMMA composite as an optical diffuser in a liquid crystal display backlight unit (BLU)," European Polymer Journal 41, 1729-1737 (2005)
[CrossRef]

2002 (1)

A. Tagaya, S. Ishii, K. Yokoyama, Higuchi E, and Koike Y, "The advanced highly scattering optical transmission polymer backlight for liquid crystal," Jpn. J. Appl. Phys. 41, 2241-2248 (2002)
[CrossRef]

2001 (1)

M. Stewart, R. S. Howell, L. Pires, and M. K. Hatails, "Polysilicon TFT technology for active matrix OLED displays," IEEE Transactions on electron devices 48, 845-851 (2001)
[CrossRef]

2000 (1)

M. Edward, M. B. O"Neill, and D. L. Wortman, US Patent 6091547 (2000)

1997 (3)

J. C. Sturm and C. C. Wu, "Integrated organic light emitting diode structures using doped polymer," in Proc. IDRC Annual Meeting (1997), pp. F11-F18

H. Hovagimian and J. Mehlhaff, "Recent advances in rapid thermal processing of polysilicon TFT LCD"s," in Proc. IDRC Annual Meeting (1997), pp. M52

A. Abileah and ND Vergith, "Liquid crystal display with holographic diffuser and prism sheet on viewer side," U.S. patent 5629784 (1997)

Electron Devices, IEEE Transactions on (1)

M. Stewart, R. S. Howell, L. Pires, and M. K. Hatails, "Polysilicon TFT technology for active matrix OLED displays," IEEE Transactions on electron devices 48, 845-851 (2001)
[CrossRef]

European Polymer Journal (1)

G. H. Kim, "A PMMA composite as an optical diffuser in a liquid crystal display backlight unit (BLU)," European Polymer Journal 41, 1729-1737 (2005)
[CrossRef]

in Proc. IDRC Annual Meeting (2)

J. C. Sturm and C. C. Wu, "Integrated organic light emitting diode structures using doped polymer," in Proc. IDRC Annual Meeting (1997), pp. F11-F18

H. Hovagimian and J. Mehlhaff, "Recent advances in rapid thermal processing of polysilicon TFT LCD"s," in Proc. IDRC Annual Meeting (1997), pp. M52

in Proc. IDW Annual Meeting (1)

G. J. Park, T. S. Aum, D. H. Lee, J. H. Kwon, M. H. Lee, B. K. Jung, and H. S. Soh, "Enhancement of luminance and view angle by optimizing the structure of prism sheet and the diffusivity of reflective polarizer film," in Proc. IDW Annual Meeting (Otsu, Japan, Dec. 2006), pp. 953-955

J. Opt. A: Pure Appl. Opt. (1)

A. C. Hamilton and J. Courtial, "Optical properties of a dove-prism sheet," J. opt. A: Pure and applied optics 10, 125302-125307 (2008)
[CrossRef]

Japanese Journal of Applied Physics (1)

A. Tagaya, S. Ishii, K. Yokoyama, Higuchi E, and Koike Y, "The advanced highly scattering optical transmission polymer backlight for liquid crystal," Jpn. J. Appl. Phys. 41, 2241-2248 (2002)
[CrossRef]

Journal of the Korean Physical Society (1)

G. J. Park, T. S. Aum, J. H. Kwon, J. H. Park, B. K. Kim, and J. K. Shin, "Characterization and modeling light scattering in diffuser sheets," J. Korean Phys. Soc. 54, 44-48 (2009)

Journal of the Optical Society of Korea (2)

Y. H. Ju, J. H. Park, J. H. Lee, J. Y. Lee, K. B. Nahm, J. H. Ko, and J. H. Kim, "Study on the simulation model for the optimization of optical structures of edge–lit backlight for LCD applications," J. Opt. Soc. Korea 12, 25-30 (2008)
[CrossRef]

I. K. Kim and K. Y. Chung, "Wide color gamut backlight from three–band white LED," J. Opt. Soc. Korea 11, 67-70 (2007)
[CrossRef]

Other (2)

M. Edward, M. B. O"Neill, and D. L. Wortman, US Patent 6091547 (2000)

A. Abileah and ND Vergith, "Liquid crystal display with holographic diffuser and prism sheet on viewer side," U.S. patent 5629784 (1997)

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