In fact, LCD always on, just put on a new layer vest, it becomes a LED. But with LCD and LED is the difference between, LED has a great advantage over LCD.
LCD = Liquid Crystal Display, LCD displays, LCD is structured on two parallel glass sideways placing the liquid crystal, two pieces of glass center has many straight and level of fine wires, or to manipulate the rod through the energized crystal molecular changes direction of the light reflecting occurred screen.
LED = Light Emitting Diode, light-emitting diode, is a way to convert electrical energy into visible light, solid-state semiconductor devices, which can be converted directly into electricity to light.
These two English names, explanations, and can be seen: LCD, refers to the liquid crystal display; LED, refers to the selection of LED backlit LCD display. Therefore, a direct comparison between the two is not appropriate, however, Xiao Bian also wrote the title why do compare it? This was extended talk about, LCD primary divided into two categories, one category is selected traditional CCFL backlit LCD display, and the other is an optional LED-backlit LCD monitor. Shopping on the masses, many consumers directly to the first class monitors called LCD, second display called LED.
Two kinds of backlight type, CCFL and LED, are cold-cathode fluorescent tubes and light-emitting diodes, during which of course is LED (light emitting diodes) function is very good, energy saving, environmental protection, small size, high brightness, stylish. CCFL (cold cathode fluorescent tube) will not elaborate, that is to say the people called LCD, LCD TV now use the backlight are now available throughout the LED (light emitting diode).
LED TV, strict sense should be called “LED-backlit LCD TV”, the imaging principle and there is no essential difference between CCFL method, except that the backlight varieties make changes, replaced by a cold cathode fluorescent tube light-emitting diodes, and can not technical innovation is the foundation said.
Therefore, simple speaking, LED, and the difference lies only in the LCD backlight, a liquid crystal panel itself does not require any modification. That both panels are the same, the operating principle of the biggest differences is that some of the backlight.
Conventional LCD TVs (optional CCFL backlight TV) screen brightness deficiency, face painting will be dark, today’s technology, LED TV is definitely an advantage: the screen effect is very good, significantly improved brightness, the screen reflects the enhanced shading, highlighting layering, contrast, bright colors can be useful degree of advancement; addition, the screen will not dim yellow, and energy saving and environmental protection, the screen can be made even more slim.
LED life expectancy is very long, the use of the usual life expectancy is also up to 100,000 hours, if the boot 5 hours per day accounting, a selection of LED backlighting LCD TV can use for nearly 55 years.