0　前言因液晶不发光 ,因此常用背光源把液晶照亮 ,以提高液晶的可读性。通常用冷阴极荧灯照明。这类荧光灯利用 Hg的 185 nm和 2 5 4nm谱线激发荧光粉发光。Hg发光必须要有一定蒸汽压强 ,并且需要一定的温度。本文介绍一种冷阴极荧光灯 ( CCF) ,功率在 1W以下 ,且有较高的效率 0 Preface Due to the liquid crystal is not luminous, so commonly used backlight to illuminate the liquid crystal in order to improve the readability of the liquid crystal. Cold cathode fluorescent lamps are usually used for lighting. Fluorescent lamps use Hg’s 185 nm and 254 nm lines to excite the phosphor. Hg light must have a certain vapor pressure, and the need for a certain temperature. This article describes a cold cathode fluorescent lamp (CCF), the power of 1W below, and has a higher efficiency