With the continuous integration of optoelectronic technology into people's lives, commercial display artifacts led display screens have undergone continuous creation and development, new products continue to replace old products, led display screen modules are getting smaller and smaller, and the definition and resolution are getting higher and higher. If you pay careful attention, your life may be "occupied" by LEDs. Will you notice the LED display in the conference room? Will you pay attention to the advertising screens in the lobby? There are more and more advertising screens in the stations on the street. Get bigger and bigger. At the same time, special-shaped LED display screens with individual shapes can also attract people's attention and gather the eyes of young people. This article is mainly to analyze the LED display parameters from the shallower to the deeper, so that everyone can be helpful when contacting the LED display.
Van ondiep tot diep, grote analyse van gemeenschappelijke parameters van led-display
1. What is the meaning of surface mount module and three-in-one
Surface mount is to solder the SMT packaged lamp on the surface of the PCB board, and the lamp pin does not need to pass through the PBC board. This module process is called surface mount. Three-in-one refers to encapsulating the three different colors of R, G, G lights in the same gel. This method is simple to produce and has a good display effect.
2. What is a pseudo-color and group talent display? What is a dual primary color?
Pseudo-color is composed of three different colors of red, yellow-green, and blue, and full color is composed of three different colors of red, pure green, and pure blue. Different color LEDs can form different display screens. The dual primary colors are composed of red, green or yellow-green.
3. What is brightness and brightness level? What is high brightness?
The intensity of light emitted by a led display unit becomes cd/m2 in the industry, which is the intensity of light emitted by one square meter. The brightness level is the manual or automatic adjustment level of the entire screen brightness between low and high brightness. High brightness is when the primary color of the LED display screen is in brightness and gray scale under a certain environmental illumination.
4. What does the gray level of the led display screen represent?
The gray scale of a led display is the number of technical processing levels from dark to bright under the same brightness level.
5. What is the white balance of the led display?
The white balance of the led display refers to the balance of the brightness of the three colors of R, G, and B at a ratio of 3:6:1. To adjust the brightness of the white balance is to adjust this ratio to achieve visual viewing effects.
6. What does the contrast of the display mean?
Contrast is the contrast between the brightness of the led display and the background brightness under constant light intensity.
7. Color temperature
The color temperature is the color of the light source at a certain temperature, which is the same as the color radiated by the black body. At this time, the temperature of the black body is the color temperature of the light source. Usually 1500K to 5000K is the transition from yellow light to pure white light.
8. What is the difference between refresh frequency and frame change frequency
Refreshing the screen is the speed at which the screen is refreshed. The lower the refresh frequency, the more severe the jitter that the human eye sees, and the worse the visual effect of viewing, which will damage the eyes to a certain extent. Generally, the refresh frequency of LED display is 120HZ. The frame rate is the number of times the display screen information is updated per unit time.
9. Viewing angle
The perfect viewing angle means that all the content displayed on the LED display can be viewed completely, and each part is not color cast, and the angle formed by the clear direction of the image content and the normal. . The viewing angle is the angle formed by the direction in which the content played on the display screen can just be seen and the normal line of the display screen.
When we set up the LED display project, we need to understand the above LED display parameters, and understand the other too complicated and unnecessary ones. Knowing the above can help us choose the right display for us.
