冷光片是一种电能转为光能的装置，工作原理就是材料（Phospher Partides）硫化锌的粒子，通过夹在两极的交流电压驱动产生的交流电场，电子在发光层内高速运转，激活发光原子，使其被加速而获得足够能量，被电场激发的电子碰撞发光中心及荧光物质，而引致电子能极的跳跃—变化—复合而导致发射出高效率冷光的一种物理现象，即电激发光现象。一般的工作电压经调整后在AC40V~AC220V之内，而操作频率可由50赫兹到4000赫兹，增加电压或频率将会增加el冷光片亮度，但是冷光源颜色会感觉变蓝
Cold light film is a device that converts electric energy into light energy, and its working principle is material The particles of ZnS are driven by the alternating voltage between the two poles to generate an alternating electric field. The electrons run at high speed in the luminescent layer to activate the luminescent atoms and obtain enough energy. The electrons excited by the electric field collide with the luminous center and the fluorescent material, resulting in the jump change recombination of the electron energy pole, resulting in the emission of high-efficiency cold light Phenomenon, namely the phenomenon of electroluminescence. The general working voltage is adjusted within ac40v ~ AC220V, and the operating frequency can be from 50 Hz to 4000 Hz. Increasing the voltage or frequency will increase the brightness of EL cold light film, but the color of cold light source will turn blue