Journal of Information Display

The Korean Infomation Display Society (한국정보디스플레이학회)
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Design and Analysis of Diffractive Grating Imprinted Light-guide Plate for LCD Illumination

  • Published : 2004.03.24
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Abstract

A highly simplified backlight unit mainly composed of diffractive grating in sub-micron order imprinted light-guide plate (LGP) is proposed for edge-lit backlight unit. Optical characteristics of the imprinted LGP are examined by RCWA and the performance is verified through Monte Carlo simulation. Results show that the diffraction efficiency, luminous flux and its uniformity over the area are significantly affected by the angle of incident ray. Consequently couples of design considerations are additionally proposed to enhance luminous flux. In terms of peak luminance and out-coupling luminous flux, the experimental results are agreed well with the performance simulation. Finally, compared with optical characteristics of conventional backlight unit, we could conclude that the proposed simplified backlight unit made of diffractive grating imprinted light-guide plate is a good substitute for the conventional backlight unit.

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References

  1. Y. Oki, in SID 98 Digest (1998), p. 157
  2. K. Kalantar, in SID 99 Digest (1999), p. 764
  3. K. Kalantar, S. Matsumoto, T. Onishi, and K. Takizawa, in SID 00 Digest (2000), p. 1029
  4. T. Ide, H. Numata, H. Mizuta, Y. Taira, M. Suzuki, M. Noguchi, and Y. Katsu, in SID 02 Digest (2002), p. 1232
  5. A. Horibe, M. Bada, E. Nihei, and Y. Koike, in SID 98 Digest (1998), p. 153
  6. A. Tagaya, M. Nagai, Y. Koike, and K. Yokoyama, Applied Optics, 40, 6274 (2001) https://doi.org/10.1364/AO.40.006274
  7. A. Tagaya, S. Ishii, K. Yokoyama, E. Higuchi, and Y. Koike, Jpn. J. Appl. Phys. 41, 2241 (2002) https://doi.org/10.1143/JJAP.41.2241
  8. H. Suzuki, M. Horiguchi, T. Okumura, A. Tagaya, and Y. Koike, in Proceeding Asia Display / IDW '03 (2003), p. 673
  9. Y. Ishikawa, Hitachi Chemical Technical Report 42, 39 (2004) in Japanese
  10. H. Y. Choi, M. G. Lee, J. H. Min, and J. S. Choi, in Proceeding Asia Display / IDW '01 (2001), p. 521
  11. M. G. Lee, H. Y. Choi, J. H. Min, J. S. Choi, J. H. Kim, and S. M. Lee, in Proceeding EURO Display (2002), p. 343
  12. S. M. Lee, H. Y. Choi, M. G. Lee, J. H. Min, J. S. Choi, J. H. Kim, S. I. Kim, Y. S. Choi, and K. H. Lee, in SID 03 Digest (2003), p. 1361
  13. J. H. Min, H. Y. Choi, M. G. Lee, J. S. Choi, J. H. Kim, and S. M. Lee, Journal of the SID 11, 653 (2003)
  14. M. G. Moharam, Eric B. Grann, Drew A. Pommet, and T. K. Gaylord, J. Opt. Soc. Am. A 12, 1068 (1995)
  15. P. Lalanne and G. Michael Morris, J. Opt. Soc. Am. A 13, 779 (1996)
  16. S. Peng and G. Michael Morris, J. Opt. Soc. Am. A 12, 1087 (1995)