LED full color splicing screen terminology interpretation
1: What is a surface mount module? What are the advantages and disadvantages?
The surface mount is also called SMT. The SMT packaged lamp is soldered to the surface of the PCB board by soldering process. The lamp pins do not need to pass through the PCB board. The module made by this process is called the surface mount module. The advantage is: large viewing angle, display The image is soft and the pixel density is large, which is suitable for indoor viewing. The disadvantage is that the brightness is not high enough, and the heat dissipation of the lamp itself is not good enough.
2: What is 3 in 1? What are its advantages and disadvantages?
It means that three different color LED chips of R, G and B are packaged in the same glue body; the advantages are: simple production and good display effect; the disadvantage is that the color separation and color separation are difficult and the cost is high.
3: What is the double primary color, pseudo color, full color display?
Different color LEDs can be used to form different display screens. The two primary colors are composed of red, green or yellow and green. The pseudo color is composed of three different colors: red, yellow green and blue. The full color is red. , pure green, pure blue three different colors.
4: What is the brightness of the light?
The intensity of light emitted by the LED display unit per unit area is cd/m2, which is simply the light intensity emitted by a display of one square meter.
5: What is the brightness level?
The number of levels of manual or auto-adjustment of the entire screen brightness from the lowest to the highest brightness.
6: What is gray level?
At the same brightness level, the display processes the number of technical processing stages from the darkest to the brightest.
7: What is the maximum brightness?
Under certain ambient illumination, the primary color of the LED display is at the maximum brightness and maximum gray level.
8: What is a PCB?
PCB is a printed circuit board (short for Printed Circuit Board).
10: What is white balance? What is white balance adjustment?
The white balance we are talking about refers to the balance of white, that is, the balance of the brightness of the three colors of R, G, and B: 3:6:1. The adjustment of the brightness ratio and white coordinates of the three colors of R, G, and B is called white balance adjustment.
11: What is contrast?
The ratio of the maximum brightness of the LED display to the background brightness under a certain ambient illumination.
12: What is the color temperature?
When the color of the light emitted by the light source is the same as the color of the black body at a certain temperature, the temperature of the black body is called the color temperature of the light source. Usually, the color is from 2000k to 5000K, that is, the color is white and yellow to gradually white.
13: What is the frame change frequency?
The number of times the display screen information is updated in a unit time.
14: What is the refresh rate?
The refresh rate is the speed at which the screen refreshes. The lower the refresh rate, the more the image flickers and shakes, the faster the eyes are fatigued, sometimes causing sore eyes. The greater the refresh rate, the less damage to the eyes, the general LEDx display refresh rate of 120HZ.
15: What is the perspective? What is the angle of view? What is the best perspective?
The viewing angle is the angle between the two viewing directions of the same plane and the normal direction when the brightness of the viewing direction drops to 1/2 of the brightness of the normal direction of the LED display screen. Divided into horizontal and vertical viewing angles; the viewing angle is just the direction of the image content on the display, and the angle formed by the normal of the display; the best viewing angle is just enough to completely see the content on the display, and No color cast, the sharpest direction of the image content and the angle formed by the normal.
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