What is LED?

LED TV could be a form of liquid crystal display LCD digital display alphanumeric display tv that uses light-emitting diodes (LEDs) to backlight the display rather than the cold cathode fluorescent lights (CCFLs) utilized in customary digital display televisions. semiconductor diode TVs area unit a lot of formally referred to as LED-backlight digital display tv.

An semiconductor diode could be a semiconductor that emits visible radiation once an electrical current passes through it. the sunshine isn't notably bright, however in most LEDs it's monochromatic, occurring at one wavelength. as compared with fluorescent lights, LEDs have considerably lower power necessities and convert power to lightweight a lot of with efficiency so less is lost as heat and focus it a lot of exactly so there's less lightweight run, which may cause opaqueness. Associate in Nursing semiconductor diode additionally lasts for much longer than most different lighting technologies.

There area unit 3 totally different semiconductor diode technologies used. the foremost unremarkably used of the 3 is edge-lit semiconductor diode, during which white LEDs area unit placed round the fringe of the screen and a diffusion panel used to illuminate the show equally. Edge-lit semiconductor diode displays will be terribly skinny. Another sort is dynamic RGB semiconductor diode, that area unit placed behind the panel. RGB LEDs build it potential to focus on areas for dimming a lot of exactly, that successively results in more true replica of blacks and whites. within the third form of show, full-array semiconductor diode, semiconductor diodes area unit positioned behind the panel equally to the means they're with RGB LED displays however there's no capability for localized dimming.

Quantum dot-based semiconductor diode displays, within the analysis stage, area unit expected to modify semiconductor diode TVs that may rival plasma for image quality, and presumably even OLED.

Vendors of semiconductor diode TVs embrace Kogan, LG, Panasonic, Philips, ProScan, Samsung, Toshiba and Vizio.

Pros: Use less power and manufacture less heat than plasma or different digital display TVs. RGB LED: Brighter, slicker show and higher distinction quantitative relation than different digital display TVs. Edge-lit LED: diluent format.