How does LCD TV work
Author:Zhao nianqun Time:2021-08-06 16:51 Browse(451)
The principle of image reproduction is different between color monitor using CRT and color monitor using LCD. The former uses magnetic deflection drive to realize line field scanning (also known as analog drive), while the latter uses dot matrix drive (also known as digital drive). Therefore, the former often uses TV lines to define its definition, while the latter defines its resolution by the number of pixels. The definition of CRT monitor is mainly determined by the channel bandwidth of the monitor and the dot distance and convergence error of the picture tube, while the latter is determined by the number of pixels of the LCD screen used. CRT monitor has low price/
The principle of image reproduction is different between color monitor using CRT and color monitor using LCD. The former uses magnetic deflection drive to realize line field scanning (also known as analog drive), while the latter uses dot matrix drive (also known as digital drive). Therefore, the former often uses TV lines to define its definition, while the latter defines its resolution by the number of pixels. The definition of CRT monitor is mainly determined by the channel bandwidth of the monitor and the dot distance and convergence error of the picture tube, while the latter is determined by the number of pixels of the LCD screen used. CRT monitor has the advantages of low price, high brightness, wide viewing angle and long service life, while LCD monitor has the advantages of small volume (flat plate shape), light weight, no flicker and no radiation of image. However, the main disadvantages of LCD monitor are high cost, narrow viewing angle (image darkening, color drift or even color reversal when viewing from the side) Short service life (usually the brightness of LCD screen drops below 60% of the normal brightness after 5000 hours, but the average life of CRT can reach more than 30000 hours). It should be affirmed that price, viewing angle and service life are the three bottlenecks that affect the popularity of LCD monitors. Of course, as one of the most mature frontier products of flat panel display devices, LCD has been paid more and more attention by domestic and foreign manufacturers, and its technology is constantly improving. At present, the horizontal viewing angle of the new TFT LCD screen with in-plane switching technology can reach 160 °、 The vertical angle of view has reached 140 °; At the same time, the price of LCD screen will gradually decrease with the gradual popularization of products and the gradual increase of output; The service life of LCD will also be improved with the continuous progress of LCD backlight and liquid crystal material technology.. It works by electricity.

How does LCD TV work

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