移動(dòng)設(shè)備和電視的LED背光和驅(qū)動(dòng)的發(fā)展趨勢(shì)

　　未來幾年LED的使用量將大幅增長，至少在未來一年里，這種增長可能歸功于背光照明，在智能手機(jī)、平板電腦和筆記本電腦以及電視等移動(dòng)設(shè)備中有著廣泛的應(yīng)用前景。2011，根據(jù)市場(chǎng)研究公司策略無限1，背光LED由移動(dòng)設(shè)備最大的市場(chǎng)在34億美元。在電視和顯示器領(lǐng)域，LED收入估計(jì)為30億美元。在他們中間，背光占了LED市場(chǎng)總額的125億美元。

　　圖2：索愛Xperia Pro mk16a手機(jī)LED背光鍵盤和觸摸屏，加上8像素?cái)z像頭、Wi-Fi和GPS。

　　然而，市場(chǎng)預(yù)計(jì)將在未來幾年內(nèi)改變其組成，因?yàn)橐呀?jīng)出現(xiàn)了一些并行趨勢(shì)。例如，在手機(jī)市場(chǎng)，有機(jī)發(fā)光二極管正開始取代LED背光顯示屏。在對(duì)位方面，預(yù)計(jì)在平板電腦和相關(guān)移動(dòng)設(shè)備中，LED背光將繼續(xù)顯著增長，例如高分辨率的iPad和電子書閱讀器，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.