A backlight (or back-lit) is a form of lighting that is used in LCD (liquid crystal display) screens. In other words, an internal backlight source of white light that illuminates the LCD on the back of the display. This is the most modern laptop screens and desktop monitors are installed. Note LED – LCD (or TFT) is not the same one (Organic LED) screen OLED active, notrequire a backlight function.
Just a few years ago, displays with LED technology (Light Emitting Diode) backlight. Today, LCD screens with LED backlight are even more expensive than traditional screens. They are really better than the old ones? Experts say that more than one computer these new types of screens brighter, thinner, less energy is expensive (and less heat) and more reliable. You may remember that this referenceLED backlit screens have a longer duration (old technology monitors began after several years of darkness using light and loses).
It 'also important that the backlight – it's kind of mercury-free LED LCD is the effort to "green" a normal screen, less power, and can help extend battery life in laptops (hence decrease problem disposal). According to research by extending internal Dell, through all its laptops to LEDconserve energy use 43% less electricity than consumers fluorescent lamp 20 million dollars in energy costs and 220 million kilowatt-hours more than in 2010 and 2011.
There is another reason, LED backlit switches. Monitor regular use CCFL (Cold Cathode Fluorescent Lamp) backlight, which produces accurate color. CCFL emits white light, the non-uniform (nude) has spectrum. Actual white light (sunlight or daylight) has a continuous spectrum. And the LED is capable of producing full spectrum light as white. Therefore LED – backlit screens are able to reproduce more natural and vivid colors. The first person who saw this grateful photographers, designers and graphics professionals.
Importantly, we now see only the first generation of monitors with LED backlight. They are not yet adequately developed and worked. In principle, the manufacture of CCFL and LED cheaper than at the end> Monitor with LED backlighting is more convenient. Apparently LED – Backlit screen soon replace the old type CCFL LCD replaced CRT as in the past. But it seems that the real revolution will come with OLEDs.
