移动设备和电视的LED背光和驱动的发展趋势

　　移动设备和电视的LED背光和驱动的发展趋势

　　未来几年LED的使用量将大幅增长，至少在未来一年里，这种增长可能归功于背光照明，在智能手机、平板电脑和笔记本电脑以及电视等移动设备中有着广泛的应用前景。2011，根据市场研究公司策略无限¹，背光LED由移动设备最大的市场在34亿美元。在电视和显示器领域，LED收入估计为30亿美元。在他们中间，背光占了LED市场总额的125亿美元。

　　图2：索爱Xperia Pro mk16a手机LED背光键盘和触摸屏，加上8像素摄像头、Wi-Fi和GPS。

　　然而，市场预计将在未来几年内改变其组成，因为已经出现了一些并行趋势。例如，在手机市场，有机发光二极管正开始取代LED背光显示屏。在对位方面，预计在平板电脑和相关移动设备中，LED背光将继续显著增长，例如高分辨率的iPad和电子书阅读器，其中包括大量的LED。

　　LED backlighting for LCD TVs will continue to grow through 2012 and 2013， as the major manufacturers convert their designs. This has been slower than expected， according to market researchers， although some TV makers， such as Sharp， have already switched completely to LED backlighting. Governmental pressure and legislation in the US （Energy Star） and Europe （EuP） over power consumption of consumer electrical products， such as large TVs， is also influencing the move to LED backlighting. It has been reported that the power consumed by a large LCD screen， backlighting and associated circuitry， accounts for about two thirds of the total power consumed by a TV. Therefore， the power savings gained by shifting to LED backlighting are proving attractive. Fast switching and the ability to dim the lighting， when the picture itself is dark， for example， not only improve picture quality but save energy， too.