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一、液晶电视基本原理液晶显示(Liquid Crystal Display)简称 LCD。LCD是个大家族,TFT(薄膜晶体管)LCD 类型仅仅是其中的一种,它是在两片玻璃板之间封入液晶,在下玻璃板上配制上扫描线与寻址线(即行、列线)将其组成一个矩阵,在其交点上再制作 TFT 有源器件和像素电极。如果是彩色显示,还要用微细加工方式制作上面与下面矩阵像素对应的 R(红)、G(绿)、B(蓝)三种颜色的滤色膜,最后将其上与下玻璃基板对齐、封盒、灌注、堵孔等一系列工艺制成液晶片。因为液晶本身不发光,必须要靠调制外界光才能达到显示目的,所以在 LCD显示屏模块中就有了发光的装置—冷阴极荧光灯CCF,这是一种依靠冷阴极气体放电,激发荧光粉而发光的光源。掺有少量水银的稀薄气体,在高电压下会产生电离,被电离的气体的二次电子发射轰击水银蒸
First, the basic principle of LCD TV Liquid Crystal Display (LCD). LCD is a big family, TFT (thin film transistor) LCD type is just one of them, it is between the two glass sealed liquid crystal, the preparation of the upper glass scanning line and addressing line (ie, line) They form a matrix, making TFT active devices and pixel electrodes at their intersections. If it is color display, but also microfabrication method above the following matrix pixel corresponding to the R (red), G (green), B (blue) three color filter, and finally the upper and lower glass substrate aligned , Sealed boxes, perfusion, plugging and other series made of liquid crystal film. Because the liquid crystal itself is not luminous, we must rely on the modulation of external light to achieve the purpose of display, so there is a light-emitting device in the LCD display module - cold cathode fluorescent CCF, which is a relying on cold cathode gas discharge to stimulate the phosphor Glowing light source. A thin gas, mixed with a small amount of mercury, produces ionization at high voltage and is bombarded with mercury by the secondary electron emission of the ionized gas