Koje su prednosti LCD ekrana:
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.
Jedinstveni princip prikaza zaslona s tekućim kristalima određuje da svaki piksel na zaslonu emitira ravnomjerno, a crveni, zeleni i plavi pikseli su blisko raspoređeni. Video signal se izravno šalje na stražnju stranu piksela kako bi potaknuo piksel da emitira svjetlost, tako da neće biti konvergencije svojstvene tradicionalnim CRT zaslonima. I usredotočite se na loše bolesti. Stoga se učinak prikaza teksta na LCD monitoru prilično razlikuje od tradicionalnog CRT monitora. Font LCD monitora je vrlo oštar, a ne postoji takva pojava kao što je zamućenje fonta i boja fonta kada CRT monitor prikazuje tekst. Štoviše, budući da zaslon s tekućim kristalima nastavlja emitirati svjetlo nakon -paljenja, pozadinsko osvjetljenje radi na visokoj frekvenciji, a zaslon je stabilan bez treperenja, što je pogodno za dugotrajno korištenje računala. CRT monitor se oslanja na snop elektrona koji više puta pogađa fosfor kako bi postigao svjetlost, što će uzrokovati povremeno treperenje svjetline. Lako je izazvati nelagodu u očima nakon dulje uporabe.
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.
