What is the difference between LCD and led LCD?

by:Genyu     2020-01-01
Compared with LCD display, LED display has more advantages in brightness, power consumption, visual angle and refresh rate, etc. Navigation to the web page has been canceled. Using LED technology, a thinner, brighter and clearer display than LCD can be produced. 1. The power consumption ratio of LED to LCD is about 1: 10, and LED is more energy-saving. 2. LED has higher refresh rate and better performance in video. 3. LED provides a viewing angle up to 160 degrees wide, can display various text, numbers, color images and animation information, and can play color video signals such as TV, video, VCD, DVD, etc. 4. The single element reaction speed of the LED display screen is 1000 times that of the LCD screen. It can also be taken care of under strong light and adapt to the low temperature of minus 40 degrees. Simply put, LCD and LED are two different display technologies. LCD is a display screen composed of liquid crystals, while LED is a display screen composed of light emitting diodes. Dear friends, now we should understand the difference between LCD and led! Then everyone will say that LED is so good, then I must buy LED display! However, the focus of this article also comes: The LED display screen currently on the market is not a real LED display screen, accurately speaking, it is an LED backlight liquid crystal display, the liquid crystal panel is still a traditional LCD display screen. In a sense, it is somewhat fraudulent! South Korea's Samsung company was once convicted by the British Advertising Association of violating the country's advertising law because its 'LEDTV' LCD TV was suspected of misleading consumers. For liquid crystal displays, the most important key is their liquid crystal panel and backlight type, while the liquid crystal panel of displays on the market generally adopts TFT panel, which is the same, the only difference between LED and LCD is that their backlight types are different: LED backlight and CCFL backlight (That is, fluorescent lamps), Respectively, diode and cold cathode lamp tube. LCD is a liquid crystal-driven display screen, while LED is a LED-driven display screen. LCD ( Short for Liquid Crystal Display) The liquid crystal display is a liquid crystal box placed in two parallel glass substrates, and TFT (Thin Film Transistor) The color filter is arranged on the upper substrate glass, and the rotation direction of liquid crystal molecules is controlled by changing the signal and voltage on the TFT, so as to control whether the polarized light of each pixel points is emitted or not and achieve the display purpose. LED (LED display) The display screen is a display panel composed of a large number of light emitting diodes, which is equivalent to a small light emitting diode at each pixel point. Compared with LCD, the LED display screen is driven by low voltage scanning and has the following features: low power consumption, long service life, low cost, high brightness, few faults, large viewing angle, long visual distance, etc.
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