TV screen is one of the key hardware.led TV and LCD TV with the merits of the distinction is not most people understand.This article specifically about the difference.
LED TV and LCD TV LED TV
Light-emitting diode LED is the acronym for Light Emitting Diode, called LED.It is a semiconductor light-emitting diode by controlling the display, which is probably a look that is usually by a number of red light-emitting diodes, rely on bright lights to show off the character. Used to display text, graphics, images, animations, quotes , video, video signals and other information display screen.
LED strict definition TV should be “by the LED (light emitting diode) as light-emitting dot matrix screen TV.” But this TV is not the appliance industry in Mainland China now commonly referred to “LED as the backlight of LCD TVs.” This television show is the use of LED (light emitting diode) may issue a red, green and blue color light of the characteristics of the base, the light-emitting display array as a point under the control of the computer technology to three colors with 256 levels of gray and any mix, you can generate 256 × 256 × 256 = 16777216 colors, form different combinations of light and color changes, to achieve a variety of dynamic effects and a variety of images.The imaging device, generally used for low-precision display or outdoor big screen. Plasma TV is to adopt this principle, the bottleneck of the process technology, plasma TV technology phased out.
Distinction of LED TV and LCD TV
The so-called liquid crystal is a polymer material, because of their special physical, chemical, optical properties, is widely used in thin display technology.We all know that material has a gas, liquid, solid three states (also known as “phase”), but it is rather strange that there are two phase material, namely, plasma and LCD.Liquid crystal phase is the combination of some special shape of the molecules produced, molecules can flow, while the polymer molecules and possess a crystal optical properties.Liquid crystal molecular shape is a long slender tail bar, under normal circumstances, the orderly arrangement of molecules and crystal clear, but when combined with an electric field, its molecular arrangement is disrupted, resulting in interference, scattering, diffraction, rotation, absorption and other optical phenomena, part of the liquid becomes turbid, the color deepened, which can display digital and images. This sensitivity is the electromagnetic field of liquid crystal electro-optic effect. The photoelectric effect using liquid crystal, liquid crystal materials originally used for electronic watches and calculators of the display board, was later used for the further development of the computer monitor and TV display panel.
Difference between LED TV and LCD TV — Comparison
Compared with the LCD TV LED TV, LED TV in brightness, power consumption, viewing angle and the refresh rate, etc., have more advantages. LED TV and LCD TV power consumption ratio is about 10:1, and higher refresh rate makes the LED in the video have better performance, to provide wide angle of 160 °, you can display a variety of text, numbers, color images and animation information, can also play TV, video, VCD, DVD and other color video signal, multiple displays can be networked broadcast. LED display and speed of response is a single element of LCD liquid crystal screen 1000 times in the bright light can not stop watching, and adapt to the low temperature of minus 40 degrees. Using LED technology, can produce thinner than the LCD, brighter, clearer displays with a wide range of applications.
Simply put, LCD and LED are two different display technologies, LCD is composed of liquid crystal display, the LED is formed by the light-emitting diode display. Compared with LCD displays LED displays, LED brightness, power consumption, viewing angle and the refresh rate, etc., have more advantages.
Difference between LED TV and LCD TV — The Wrong Zone
However, now used by some TV LED display, LED display is not really accurate to say that LED-backlit display, in fact, replace the old lamp with a LED lamp.Increase does exist but it is not great, but the actual cost is not high, still need a complete revolution: one stage, to do with the entire LED array backlight; the second stage, LED light and show the color directly.
According to the experts, the Ministry of Industry, currently on the market the so-called LED TV, LED TV not really, just a “premature child” – LED backlight TV. The reason is, LED backlight TV is replaced with LED (cold cathode fluorescent tubes), but not really using the LED panel. LCD TV panels and traditional, these two concepts are different. Therefore, generally referred to as “LED TV” just playing word games
LCD TVs on the market today Ye Hao, LED TV Ye Hao, in the final analysis “LCD panel” TV. LCD panel itself does not light, requires exposure to light from the back to “light up”, and then have a light and color. LCD TV’s backlight is fluorescent tubes, so the power consumption, easy to heat, and light a large room, television is relatively stupid thick; LED TV LED backlighting is (LED, Light Emitting Diode). Light-emitting diode is a micro-electro-optical power conversion semiconductor devices, with small, low power consumption, long life, high brightness, low-calorie, environmental protection, durable and so on, be used instead of fluorescent tubes LCD TV backlight.Therefore, LED TV can produce thinner more smart more environmentally friendly, and low power consumption, minimal heat, better quality, longer life expectancy theory, to achieve a real sense of definition and wall.Therefore, the Chinese mainland market LED television should be called the “LED backlight LCD TV”, the use of LED lighting as a lighting device.In addition, the use of LED illumination there are many examples, such as the LED light flashlight, LED light fixtures, LED light source lamps and lights automotive lighting and so on.
It is understood, LED backlight TV is the first major fatal flaw leaked serious. All of the “ultra-thin LED” TV hides a fatal flaw in all that is in the “black” state light leakage occurs. Technical experts said that the current so-called ultra-thin LED technology, in fact, is the “edge of the type” backlight technology, which will inevitably lead to the screen backlight is uneven, light leakage occurs. Which in the past, strictly speaking, not simply through product quality is substandard products. LED backlight second fatal flaw is the TV from the side you will find a little white side. 32-inch models such as a certain brand of LED backlight technology, from the side is a gray screen, LCD TV, compared with the general definition but became even worse.
