Review of recent patents in AC LED technology

被引：0
|
作者：
Feng W. [1 ]
Shi F.G. [1 ]
He Y. [1 ]
机构：
[1] Optoelectronics Packaging and Materials Lab, Henry Samueli School of Engineering, University of California, Irvine, CA
来源：
Recent Patents on Electrical Engineering | 2010年 / 3卷 / 03期
关键词：
AC LED; LED driver; Light emitting diodes; Lighting; Opto-electronic device;
D O I：
10.2174/1874476111003030186
中图分类号：
学科分类号：
摘要：
LEDs for lighting application are becoming widely adopted due to economic, energy and environmental reasons. LEDs are conventionally powered by DC sources or AC sources with AC-DC converters. More and more recent research works have been focusing on direct AC powering LEDs without AC-DC converters. Enhanced reliability, lower cost and easy to replace existing lighting fixtures due to the elimination of AC-DC converter are advantages of AC LEDs. DC LED drivers architectures including AC-DC converter based LED drivers are reviewed and compared with direct AC powering LEDs. Issues like flicker effects, current limiting and protection, efficiency and LEDs reverse break down in AC LEDs and recent AC LEDs patents are discussed. © 2010 Bentham Science Publishers Ltd.
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页码：186 / 192
页数：6
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