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Lcd LCD splicing screen and led splicing screen of the essential difference

        First, what is the LED?

        LED is light emitting diode Light EmittingDiode English abbreviation. LED applications can be divided into two categories: First, LED LCD splicing screen; Second, LED single tube applications, including backlight LED, infrared LED and so on. LED LCD splicing screen is now in terms of China's design and production technology and the basic level of international synchronization. LED LCD splicing screen is composed of light-emitting diodes arranged a splicing screen 5000 yuan computer configuration single. It uses low-voltage scanning drive, with: less power consumption, long life, low cost, high brightness, less failure, large viewing angle, visual distance and so on.


Second, what is the LCD?

LCD is the LCD splicing screen Liquid Crystal Display full name, mainly TFT, UFB, TFD, STN and other types of LCD splicing screen can not locate the program input point in the dynamic link library.


Notebook LCD screen commonly used is TFT. TFT refers to the thin film transistor, each of the liquid crystal pixels are integrated in the pixel behind the thin film transistor to drive, which can be high speed, high brightness, contrast LCD splicing screen information, is the best LCD color display device One is now the mainstream display device on laptops and desktops. Compared with STN, TFT has excellent color saturation, reduction ability and higher contrast, the sun is still very clear, but the disadvantage is more power, and the cost is higher.


Third, LCD LCD splicing screen and LED LCD splicing screen difference


LED splicing screen and LCD splicing screen compared to LED in the brightness, power consumption, viewing angle and refresh rate, etc., are more advantages have been canceled to the page navigation. Using LED technology, you can create thinner, brighter, clearer splicing screens than LCDs.

1, LED and LCD power consumption ratio of about 1: 10, LED more energy efficient.


2, LED has a higher refresh rate, the video has a better performance.


3, LED provides a wide viewing angle of 178 °, you can display a variety of text, digital, color images and animation information, you can play TV, video, VCD, DVD and other color video signals.


4, LED LCD splicing screen of the individual elements of the reaction speed is 1000 times the LCD screen, in the light can also take care of the wrong, and adapt to minus 40 degrees low temperature.


Simply put, LCD and LED are two different display technology, LCD is composed of liquid crystal LCD splicing screen, and LED is composed of light-emitting diode LCD splicing screen.


Dear friends, now should understand the difference between lcd and led it! Then we will say that LED is so good, then I must buy LED LCD splicing screen! However, the focus of this article also came: the current market, said LED LCD splicing screen is not the true sense of the LED LCD splicing screen, accurate that is LED backlit LCD splicing screen, LCD panel is still the traditional LCD liquid crystal Splicing screen, in a sense, how much this contains the nature of fraud! South Korea's Samsung has been organized by the British Advertising Association sentenced to violate the country's advertising law, the reason is that its "LEDTV" LCD TV has mislead consumers suspected. For LCD splicing screen, the most important key is its LCD panel and backlight type, and the market splicing screen LCD panel generally use TFT panel, is the same, LED and LCD difference is only their type of backlight is not the same : LED backlight and CCFL backlight (that is, fluorescent), respectively, diodes and cold cathode lamp.


LED backlight: power (relative to CCFL power 30% to 50%), high price, bright and high saturation.


CCFL backlight: relative to the LED backlight power consumption (or CRT power than many), cheap.


Screen difference: LED backlight color is more bright, high saturation (CCFL and LED natural light source is not the same).



General visual observation, LCD screen and LED screen color difference is not great. If you only pay for the name of the LED does not commensurate with the cost of money, it is not necessary.


Finally, led LCD splicing screen and LCD LCD splicing screen difference


LED LCD splicing screen and LCD splicing screen In fact, the splicing screen is the same, are no difference between the LCD. The main difference is that the backlighting of the screen produces a different light source.


1, LED LCD splicing screen is the use of LED light source, that is, light-emitting diodes (like the home appliances on the red blue light). This light-emitting diode is very power, and because it is not a lamp so that one can be evenly distributed in the array behind the LCD screen. Brightness is good, so that the backlight is more uniform. This splicing screen can do thinner and more power, LED life than CCFL longer life, hair color stability is not easy to yellow.


2, ordinary LCD splicing screen using CCFL light source, that is, cold cathode fluorescent tube (looks like a copy of the scanning tube), the screen has a side of each, splicing screen on the back of a backlight, is fluorescent Material composition, you can let the light on both sides of the average distribution of the entire screen back, so that the entire screen evenly shiny. But because of technical constraints, such splicing screen brightness is not completely uniform, but it is difficult to find it, while the lamp is also a certain life, a long time will be yellow.


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