Several wonderful things to distinguish the quality of LED display

For a "foreman" how to identify the quality of the LED display, he is not fully understanding the LED display. Under normal circumstances, it is difficult to make user convinced, and the following days are all kinds of authenticity. The display is good and the quality is good, I hope to help when you purchase a full-color display.

For a "foreman" how to identify the quality of the LED display, he is not fully understanding the LED display. Under normal circumstances, it is difficult to make user convinced, and the following days are all kinds of authenticity. The display is good and the quality is good, I hope to help when you purchase a full-color display.

1.The quality of a LED display is mainly signed from the following aspects: Flatness The surface flatness of the display is within ± 1 mm to ensure that the display image does not distort the image, the local projection or recesses cause a dead angle in the visual angle of the display. Between the box and the cabinet, the gap between the module and the module is within 1 mm. The gap is too large, causing the display border to be obvious, visual is not coordinated. The quality of flatness is mainly determined by the production process.

2. Brightness and visual angle The brightness of the indoor full color screen is above 800 cd / m2, and the brightness of the outdoor full color screen is above 5000 cd / m2 to ensure the normal operation of the display, otherwise the displayed image is not clear because the brightness is too low. The brightness of the display is not bright, the better, should match the brightness of the LED package. One flavor increases the current increases brightness, which will cause LED handsome to be too fast, and the display life is rapidly decline. Vendors can be required to provide parameter reports to confirm. The size of the screen is mainly determined by the good and bad decisions of the LED die. Visual angle refers to the maximum angle of which you can see the entire screen content from the screen. The visual angle is directly determined by the display audience, so the greater the better. The visual angle is over 150 degrees. The size of the visual angle is mainly determined by the method of packaging of the die. How many wonderful recruitment "foreigners" identify the quality of the LED display

3. White balance effect The white balance is one of the most important indicators of the display. The proportion of color is 1: 4.6: 0.16, it will show a pure white, if there is a little deviation, there will be a bias of white balance, generally pay attention to whether white is blue, yellowish Green phenomenon. When monochrome, the brightness difference between the LEDs and the wavelength difference is, the better, standing on the side of the screen, no color difference or bias, the consistency is good. The quality of white balance is mainly determined by the control system of the LED dolumin brightness wavelength ratio and the display screen, and the die is also affected by the reducing property of the color.

4. Color reducing The reducing property of color refers to the reducibility of the display of the color, and the color of the display display is consistent with the color of the play source, so that the real feeling of the image can be guaranteed.

5. Have mosaic, dead point Mosaic refers to a common or normally black small quad square block appearing on the display. The main reason why the main reason is that the IC or connector quality used in the display is not. The dead point refers to a single point that appears on the display, and the dead point is mainly determined by the quality of the quality of the downs and whether the manufacturer's anti-static measures are perfect.

6. There is a colorless block The color block refers to a more obvious color difference between adjacent mode groups. The transition of color is in units of modules. The phenomenon caused by the color block is mainly poor, the gradation level is not high, and the scanning frequency is low.

7. Display stability Stability means that the LED display is reliable in the quality of the aging stage after making the finished product. Can be agreed to the manufacturer to aging to obtain the situation of the situation during the aging of the screen.

8. Security The LED display is made up of multiple boxes. Each case must be a ground protection, and the ground resistance should be less than 0.1 Euro. And can withstand high pressure, 1500V 1min does not hit. WARNING and slogans must be warned at the high voltage input and power supply high voltage terminals.

9. Packaging and transportation The LED display belongs to valuables, the weight is very large, and the packaging method used by the manufacturer is important. Generally, according to a single case, the cabins must have a buffer role in the box, and the box is not large during transportation. The outer packing must have a clear identification.