1.The concept of LED display and LCD display

The LED display is composed of many small LED module panels. Each LED module panel, also called LED display module, is composed of many LED dot pixels arranged in a matrix, and the distance between each LED dot pixel is called dot pitch.Generally, the dot spacing below P5 (including P5) is used indoors, and the dot spacing below P2 is called a small-pitch LED display, such as P2, P1.875, P1.667, P1.583, which is used in places with relatively close indoor viewing distance;However, the pixel pitch above P5 is often used outdoors, and P8, P10, P16 and other pixel pitches are the specifications of LED display screens that are often used outdoors.

LCD is the abbreviation of Liquid Crystal Display. It consists of a certain number of colored or black-and-white pixels, which are placed in front of the light source or reflector.Liquid crystal is a special substance between solid and liquid. It is an organic compound, which is usually liquid, but its molecular arrangement is as regular as that of solid crystal, so it is named liquid crystal.The main working principle of LCD screen is to stimulate liquid crystal molecules with current to produce dots, lines and surfaces, which are matched with the back lamp to form a picture.

2.The main differences between LCD and LED are as follows

1. The contrast LED LCD screen can change the light intensity very quickly, so the backlight brightness can be adjusted locally according to the brightness requirements of local images. Therefore, dark images can be darker, and the dynamic contrast ratio is much higher than that of LCD screen.Especially for direct LED backlight, the improvement of dynamic contrast is more obvious. 

2. Size Using LED LCD backlight can reduce the thickness, volume and weight of the TV set, and the edge LED LCD screen can reach less than 1cm. 

3. Energy consumption. The LED LCD backlight saves power in low and medium luminosity, and the LED LCD backlight can save up to 20%-50% of power consumption by dynamically dimming the LED LCD screen according to the scribing image. 

4. Color gamut The direct LED backlight with independent three-color LCD screen has a wider color gamut than LCD screen.

5. Lifetime The life of LED LCD backlight is much longer than that of LCD.

3. Which is better, LED display or LCD display?

1. In terms of clarity and brightness, the refresh rate of LED display screen is much higher than that of LCD display screen, which has advantages over LCD display screen in clarity and brightness.Moreover, the LED display screen can still display clearly under the strong light of direct sunlight, and its screen display brightness can be automatically adjusted according to the outdoor environment brightness, so as to achieve excellent video display effect.

2. Energy consumption. As far as its LED light source is concerned, LED display is an energy-saving and environment-friendly product. Semiconductor light-emitting diode LED is an extremely energy-saving light source with a wide range of applications at the current technical level. The energy-saving effect of LED display is 10 times that of LCD display, that is to say, under the same configuration, LCD consumes 10 times more power than LED. 

3. Viewing angle, the LED display can reach a relatively large viewing angle, and the video display is still clear at a viewing angle of 165.However, the viewing angle of LCD is very limited. If the viewing angle is slightly larger, it will not be clear, and the video will become blurred. 

4. Contrast, the contrast of high-quality LED display screen can reach 3000:1, while the contrast of high-quality LCD display screen under the same configuration condition is only about 350:1, that is, LED display screen is nearly 10 times stronger than LCD display screen.This is also the advantage of LED display over LCD display.We recommend CL-S790AHD LCD produced by Carleader.