显像管学称阴极射线管当显象管内部电子枪的阴极部分被加热时发出电子束,电子束受到不同电压极的聚焦和加速后变成细小的电子流,再经过偏转线圈的引导向正确目标偏离,穿越荫罩的小孔,当电子束轰击到荧光屏上的荧光粉时,荧光粉被激活,就可以发出光来。R、G、B 三色荧光点被按不同比例强度的电子流点亮,就会产生各种色彩。显像管规则大体可以以两种形式划 CRT called the cathode ray tube When the cathode tube of the tube electron gun is heated when the issue of electron beam, the electron beam by different voltage pole focusing and acceleration into a small stream of electrons, and then through the deflection yoke to the correct target deviation , Through the mask aperture, when the electron beam bombardment phosphor screen, the phosphor is activated, you can send light. R, G, B three-color fluorescence point is pressed according to the intensity of the flow of different proportions, it will produce a variety of colors. The picture tube rule can be roughly divided into two forms