Optical design of LED edge-lit backlight based on molecular dynamics method using a random/regular composite distribution

Chang, Jee-Gong; Ju, Shin‐Pon; Hsieh, Jin‐Yuan

doi:10.1088/1464-4258/11/12/125502

Cited by 4 publications

(1 citation statement)

References 16 publications

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“…Liquid crystal displays (LCDs) are applied in many devices such as TV, cell phones, industry equipment, media players, and global positioning systems. [1][2][3][4][5] Since liquid crystals do not emit light themselves, they need a separate illumination system, the so-called backlight unit (BLU). For power saving, light-emitted diodes (LEDs) are used as light sources of backlight units.…”

Section: Introductionmentioning

confidence: 99%

Proposal and design of hybrid light guide plate based on aspheric concave surface and micropatterns to improve illuminance and color uniformity for LED display

Shin

Lee

Moon

et al. 2014

Jpn. J. Appl. Phys.

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A novel hybrid light guide plate (LGP) for large area light emitting diode (LED) display was proposed by combining the advantages of both direct- and edge-type backlight units (BLUs). The newly proposed hybrid LGP consists of a thin plate with specially designed aspheric concave structure on the top surface and semispherical micropatterns on both the top and bottom surfaces to enhance light uniformity and decrease color variation. The optical characteristics were investigated to realize the optimized geometry for improving the optical efficiency and uniformity. Ray-tracing simulation results for the 55 in. display show that the illuminance uniformity, optical efficiency, and color coordinate deviation are more than 96%, 81.5%, and less than ±0.004, respectively. In addition, this hybrid LGP has an advantage of thinner thickness and less number of LEDs over the commercial direct-type LGP as well as a much lower color variation over the edge-type LGP.

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