標題: Energy-Recycling (ER) Technique for a Direct-Lit Intelligent Power Management Backlight Unit (BLU)
作者: Huang, Ming-Hsin
Tsai, Yueh-Chang
Chen, Ke-Horng
電控工程研究所
Institute of Electrical and Control Engineering
關鍵字: Direct-lit LED backlight;energy-recycling technique;field-sequential color (FSC);liquid crystal display (LCD) technique
公開日期: 1-Oct-2010
摘要: A field-sequential-color (FSC) liquid crystal display (LCD) technique with a direct-lit red, green, and blue LED backlight driver is proposed to achieve low weight, thin, perfect image quality, and low-power consumption of LCD television. The FSC technique performs a pseudorandom color sequence in the spatial and temporal domains to reduce color-breakup and motion-blur effects. The direct-lit RGB-LED backlight driver increases brightness, contrast, and uniformity due to the removal of a color filter. In this paper, the proposed FCS-LCD controller uses a single LED driver to switch the driving voltage alternatively between 36 V for driving 12-series G- or B-LEDs and 24 V for 12-series R-LEDs. The proposed energy-recycling technique can harvest the extra energy when the driving voltage switches from 36 to 24 V. Experimental results show that energy saving is higher than 17% of the conventional driving method.
URI: http://dx.doi.org/10.1109/TPEL.2010.2050909
http://hdl.handle.net/11536/32143
ISSN: 0885-8993
DOI: 10.1109/TPEL.2010.2050909
期刊: IEEE TRANSACTIONS ON POWER ELECTRONICS
Volume: 25
Issue: 10
起始頁: 2588
結束頁: 2598
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