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Journal of the Optical Society of Korea

Journal of the Optical Society of Korea

| PUBLISHED BY THE OPTICAL SOCIETY OF KOREA

  • Vol. 12, Iss. 1 — Mar. 25, 2008
  • pp: 25–30

Study on the Simulation Model for the Optimization of Optical Structures of Edge-lit Backlight for LCD Applications

Young-Hyun Ju, Ji-Hee Park, Jeong-Ho Lee, Ji-Young Lee, Kie-Bong Nahm, Jae-Hyeon Ko, and Joong-Hyun Kim  »View Author Affiliations


Journal of the Optical Society of Korea, Vol. 12, Issue 1, pp. 25-30 (2008)


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Abstract

The optical performances of 15-inch edge-lit backlight were simulated by using a Monte Carlo ray-tracing technique. The backlight model was built by combining a wedge-type light guide plate, a diffuser sheet, a tubular fluorescent lamp with a lamp reflector, and two crossed prism sheets. Angular distributions of the luminance on each optical component obtained from simulation were consistent with those obtained from experiments on a real 15-inch backlight. The constructed backlight model was used to evaluate the optical performances of a micro-pyramid film. It was found that the on-axis luminance gain on the pyramid film is higher than that on one prism film but much lower than that on the two crossed prism films. These results suggest that a reliable simulation model can be used to develop new hybrid films and to optimize the optical structure of edge-lit backlight in order to reduce the developmental period.

© 2008 Optical Society of Korea

OCIS Codes
(120.2040) Instrumentation, measurement, and metrology : Displays
(150.2950) Machine vision : Illumination
(230.3720) Optical devices : Liquid-crystal devices

History
Original Manuscript: January 18, 2008
Published: March 25, 2008

Citation
Young-Hyun Ju, Ji-Hee Park, Jeong-Ho Lee, Ji-Young Lee, Kie-Bong Nahm, Jae-Hyeon Ko, and Joong-Hyun 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)
http://www.opticsinfobase.org/josk/abstract.cfm?URI=josk-12-1-25


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References

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  2. M. Anandan, “LCD Backlighting,” SID "02 Seminar Lecture Notes, p. 169 (2002). J. H. Kim et al., “Twodimensionally integrated fluorescent lamp for 40 inch LCD-TV application,” IMID "04 Tech. Digest, pp. 795-798, 2004
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