1. Flatness The surface flatness of the conference room LED display should be within the range of 0≤a≤1mm to ensure that the displayed image will not be distorted, and local protrusions or depressions will cause dead angles in the display viewing angle. The flatness mainly depends on three aspects: production process and materials; on-site engineering construction; construction quality of the installation team. 2. Brightness and viewing angle The brightness of the LED display in the meeting room needs to be higher than 800cd/m2 to ensure the normal display of the LED display, otherwise if the brightness is too low, the displayed image will not be clear.
The brightness level mainly depends on the brightness level. The quality of the LED die. The size of the viewing angle directly determines the size of the viewing angle.
The LEDs show the size of the viewable area, so bigger is better. The size of the viewing angle is mainly determined by the LED chips that make up the viewing angle. 3. White balance effect White balance effect is one of the important display indicators of conference room LED display.
In terms of color, the ratio of the three primary colors of red, green and blue is 1:4.6:0. Pure white will be displayed at 16:00. If the actual ratio is slightly off, the white balance will be off.
Usually, we should pay attention to whether the white is blue or yellow-green. The quality of white balance mainly depends on the LED chip, and the LED chip also has an impact on color reproduction. 4. Color restoration The color restoration refers to the restoration of the color by the LED display, that is, the restoration of the color. The color displayed on the LED display needs to be highly consistent with the color of the playback source to ensure the authenticity of the image.
5. Whether there is mosaic, dead point phenomenon Mosaic means that the LED display in the conference room is always on or black, which is a phenomenon of module necrosis. The main reasons are: ①The quality of the LED connector is unqualified, with protrusions or depressions; ②The LED is not correct; ③The sealing process is unqualified. Dead point means dead point.
There is a black spot on the LED screen. The number of dead spots mainly depends on the number of dead spots. The quality of LED chips.
6. With or without color block Color block means that there is no color in a small area. The main reason is control. IC and provide power, control the quality of circuit wiring.
7. The initial evaluation of product quality by appearance is intuitive and original. The appearance quality of the LED display can reflect the manufacturer's production technology and material quality. .