What are the advantages of LCD screens:
1. Zero radiation, low energy consumption and low heat dissipation.
The display principle of liquid crystal display is to realize the restoration of the picture by twisting the deflection angle of the liquid crystal molecules in the liquid crystal pixel to achieve the background light. There is no internal ultra-high voltage components like CRT, and there will be no X-ray excessive due to high pressure. Moreover, the structure and circuit of the machine are simple, the modularization and the high integration of the chip are sufficient to minimize the electromagnetic radiation generated when the circuit is working. This design directly reduces the power consumption of the circuit, and the heat generation is also very small. Although the liquid crystal display may produce slight electromagnetic radiation during operation, it is easy to solve it by shielding the circuit. Since the CRT monitor takes heat dissipation into consideration, it is not allowed to drill holes in the shielding cover to cause radiation leakage.
LCD
2, slim and lightweight.
It was the appearance of the liquid crystal display that made the invention of the portable computer possible. Similarly, although desktop LCD monitors are larger in size and weight than laptop computers, they are insignificant compared to the bulky and heavy CRT monitors. Compared with 15-inch monitors, the depth of CRT monitors is generally close to 50 cm, while the depth of Jaws's latest LCD monitor NF-1500MA is less than 5 cm! With the changes in consumer opinions and living environment, people are more concerned about household appliances. The volume and weight requirements are getting higher and higher. Liquid crystal displays have become the most likely display device to break the monopoly of CRT displays due to their inherent advantages of slimness and lightness.
3, accurately restore the image.
The liquid crystal display adopts a direct digital addressing display method, which can directly correspond the video signal to the LCD on the screen according to the "address" signal in the signal level after AD conversion of the video signal output by the graphics card Displayed on the pixel. The CRT monitor relies on the electromagnetic field generated by the deflection coil to control the periodic scanning of the electron beam on the screen to achieve the purpose of displaying images. Since the trajectory of the electron beam is easily affected by the environmental magnetic field or geomagnetism, the absolute positioning of the electron beam on the screen cannot be achieved. Therefore, CRT displays are prone to phenomena that cannot be completely eliminated, such as geometric distortion and linear distortion of the picture. But the liquid crystal display does not have this possibility. The LCD can display the picture perfectly on the screen without any geometric distortion or linear distortion.
4. The display characters are sharp, and the surface is stable without flickering.
The unique display principle of liquid crystal display determines that each pixel on the screen emits uniformly, and the red, green and blue pixels are closely arranged. The video signal is directly sent to the back of the pixel to drive the pixel to emit light, so there will be no convergence inherent in traditional CRT displays. And focus on bad ills. Therefore, the text display effect on the LCD monitor is quite different from the traditional CRT monitor. The font of the LCD monitor is very sharp, and there is no such phenomenon as the blur of the font and the font color when the CRT monitor displays the text. Moreover, since the liquid crystal display keeps emitting light after power-on, the backlight works at high frequency, and the display screen is stable without flickering, which is conducive to using the computer for a long time. The CRT monitor relies on the electron beam to repeatedly hit the phosphor to achieve light, which will cause the brightness to periodically flicker. It is easy to cause eye discomfort after prolonged use.
5. Easy to adjust the screen.
The direct addressing display mode of the liquid crystal display makes the screen adjustment of the liquid crystal display do not require too much geometric adjustment, linear adjustment and position adjustment of the display content. The liquid crystal display can easily adjust the screen to the best position automatically after calculation by the chip. You only need to press the "Auto" button to complete this step. Eliminates the cumbersome adjustment of CRT monitors. You only need to manually adjust the brightness and contrast of the screen to make the machine work in the best condition.
