LED backlight driving system for large-scale of LCD panels
作者： T. H. Wang , H. J. Chiu , S. C. Mou
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摘要: This paper presents a LED backlight driving system for large-scale of LCD panels. High efficiency, high power factor, circuit simplicity, and low cost can be achieved by using single-stage charge-pump asymmetrical-half-bridge converter. To regulate the current brightness system, some sharing methods are presented compared. The requirements luminance balance among paralleled arrays satisfied while ripple is eliminated significantly. Because addition bypass diodes, an alternative path offered when single fails. array will not distinguish. A laboratory prototype has been built tested. simulation experimental results shown to verify feasibility proposed method.
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