以实物《图示法》浅谈LCD液晶背光管的类型与内部结构及其驱动联接方式
在日常维修工作中，很多朋友向我问到：液晶LCD电视机的背光管类型及其内部的联接型式、驱动方式如何，等连串有关问题，如果一个从事维修的工作者，从理论上读懂弄通这些问题，也许对电视机的背光及背光源所引起的故障，就有很快速以至很精准的判断能力了。然而，对于一个有素质的维修工来说也许都有这些具备吧。液晶LCD电视机的背光管不外乎有两种：其一，是EEFL管，其二，是CCFL管（即冷阴极管），前者只需一个变压器就能驱动点亮全部并联的灯管，后者需要多个变压器驱动点亮多个灯管（也叫多个变压器的大板）。下面笔者以实物（图示法）介绍两类（EEFL及CCFL）背光灯管在液晶电视机中的多种结构与驱动联接方式，需要指出的是：本帖未对使用12V驱动背光管的论述是因为它的工作原理与24V供电驱动基本类似，故予于省略。郑重敬告：笔者发出的图片为示意图，本帖有关之论述纯属个人见解，并不代表任何之观点与立场。谢谢！见图：
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