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66.2: Optimization of LED Arrangement for Extending LED Binning Range in Backlight System
Author(s) -
Chou PingYen,
Huang YiPai,
Hung ChienHsiang,
Ito Yasushi
Publication year - 2012
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1002/j.2168-0159.2012.tb05932.x
Subject(s) - backlight , light emitting diode , radiance , spectral power distribution , superposition principle , computer science , range (aeronautics) , optics , luminance , diode , phosphor , standard illuminant , led lamp , liquid crystal display , optoelectronics , mathematics , physics , materials science , computer vision , mathematical analysis , composite material
In this paper, an analysis method was developed to calculate the optical properties of direct‐emitting backlight systems, which expands the usage of bins. The method based on computing the radiance distribution from the measured light spreading function and spectrum of light‐emitting diode (LED). The calculation procedure includes linear spectral superposition and color difference evaluation. The accuracy of this method was verified by a real backlight module, which introduced the remote phosphor backlight system. This structure could have more benefits than the traditional one, including thinner thickness, longer life time, and wider LED bins. The conditions of acceptable color deviation values could be simply obtained, and the different binned LEDs could be efficiently used to reduce cost and achieve the wider binned‐LEDs application purpose.