Liquid Crystal

In order to improve the image quality of LCD TV, TV manufacturers began to use LED as the backlight of LCD TV. Compared with the traditional LCD TV using fluorescent tubes as backlight, LED LCD TV can display more realistic colors. In addition to the increase in color saturation, the dynamic adjustment of the picture can make the brightness and contrast can be dynamically corrected when displaying different pictures, so as to achieve better image quality.

The LCD panel is like that layer of film, but the picture will change. Traditional liquid crystal display devices use CCFLs (cold cathode fluorescent lamps) as the light source. Although the name is very professional, we understand it as a fluorescent lamp used at home, but the lamp tube is very thin. The color of many objects under fluorescent lamps is very strange, because the light it emits is not real sunlight. The sunlight we have long adapted to is composed of red, orange, yellow, green, blue, purple and other colors in a certain proportion. But the light of fluorescent lamp in some colors (expansion) is overemphasized, and some colors are badly lacking. So the problem arises. The color of the light source of the back light box is not accurate enough, and the image generated after passing through the liquid crystal panel naturally cannot overcome the congenital shortcomings, resulting in the deviation of color restoration. This is also one of the reasons why LCD has been difficult to satisfy professional users in image display.