Types of computer screens and how to choose the appropriate screen:

LED technology is to add to LCD screens and is not a new type of screens , it is a special technical lighting background of the screen , where the LCD screen (for example, unlike the plasma ) can not each pixel automatically lighting but you need to light comes from behind to give the screen required brightness and the screen itself to allow for lighting pass through the pixels in the light color of the image or isolate the lighting in the black or dark pixels at different rates and degrees.

The  ability of  LCD screen to isolate the backlight is not completed , it suffers from the disadvantage that the black color does not appear , but this disadvantage doesn’t  not strongly appear in some screens to the naked eye . It is depending on the quality of the LCD screen .

The LED display screen has three features than the   LCD... The first is that their useful life greater up to 100 000 operating hours before you start lighting weaken somewhat , compared to 60 thousand hours of screens regular LCD but this feature is not of great regard for it. You can change the lighting source in the regular LCD screen after the deterioration of her condition to return the screen like new.