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Teach you how to identify LED display

by:Toponetech     2021-05-07
Outdoor LED display manufacturers teach you how to identify an touch display?   1: Flatness: The surface flatness of the display should be within -1mm to ensure that the displayed image is not distorted, and local protrusions or recesses will cause the display to be distorted. There is a blind spot in the viewing angle. The quality of flatness is mainly determined by the production process. 2: Brightness and viewing angle: The brightness of the indoor full-color LED screen should be 800-2000cd/m2, and the brightness of the outdoor full-color LED screen should be 5000-7500cd/m2 to ensure the normal operation of the display, otherwise it will be too low brightness Second, the displayed image cannot be seen clearly. The brightness is mainly determined by the crystal size of the LED die. The size of the viewing angle directly determines the audience of the display screen, so the larger the angle, the better. The size is mainly determined by the packaging method of the die. Indoor LED display 3: White balance effect: White balance effect is one of the most important indicators of the display. It is well known that when the ratio of the three primary colors of red, green and blue is 1:4.6:0.16, it will be pure white, but if it is actually A slight deviation of the ratio will result in a deviation of the white balance. Generally, pay attention to whether the white is bluish or yellowish green. The quality of the white balance is mainly determined by the control system of the display, and the die also has an impact on the color reproduction.  4: Color reproducibility: Color reproducibility refers to the color reducibility of the display screen, which means that the color displayed on the display screen must be exactly the same as the color of the playback source, so as to ensure the realism of the image. 5: Whether there is mosaic or dead spots: Mosaic refers to the uneven color effect of the unit module on the display. The small four squares that are always bright or normally black are the phenomenon of module necrosis. The main reason is that the display The quality of the connectors used is not good enough. The dead point is a single point that is always bright or black that appears on the display. The number of dead points is mainly determined by the quality of the die. 6: Whether there is color block Color difference: Color block refers to the obvious color difference between adjacent modules. The color transition is based on the module. The color block phenomenon is mainly due to the poor control system of the core technology of the LED display. The gray level is not high and the scanning frequency is low.   LED display technology is also becoming more and more mature. The quality of previous LED displays was poor, but now it is getting better and better, and it can be comparable to LCD screens in terms of color reproducibility. Therefore, when customers choose a good LED display, they can identify the quality of the LED display according to the quality of the LCD screen. How to identify the quality of an LED display?   1: Flatness: The flatness of the surface of the display should be within ±1mm to ensure that the displayed image is not distorted. Local protrusions or recesses will cause the viewing angle of the display to appear. Dead ends. The quality of flatness is mainly determined by the production process. 2: Brightness and viewing angle: The brightness of the indoor full-color screen must be 800-2000cd/m2, and the brightness of the outdoor full-color screen must be 5000-7500cd/m2 to ensure the normal operation of the display, otherwise it will be too low for the brightness. The displayed image is unclear. The brightness is mainly determined by the crystal size of the LED die. The viewing angle directly determines the audience of the display screen, so the larger the angle, the better. The size is mainly determined by the packaging method of the die. 3: White balance effect: The white balance effect is one of the most important indicators of the display. It is well known that when the ratio of the three primary colors of red, green and blue is 1:4.6:0.16, it will be pure white, but if the actual ratio is a little bit deviated There will be a deviation in the white balance. Generally, pay attention to whether the white is bluish or yellow-green. The quality of the white balance is mainly determined by the control system of the display screen, and the die also has an impact on the color reproduction.  4: Color reproducibility: Color reproducibility refers to the color reducibility of the display screen, which means that the color displayed on the display screen must be exactly the same as the color of the playback source, so as to ensure the authenticity of the image. LED display technology is becoming more and more mature, the previous touch display quality is poor, and now it is getting better and better, the color reproduction has been comparable to LCD screens. Therefore, when customers choose a good LED display, they can judge the quality of the touch display according to the quality of the LCD screen.
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