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Professional development, design, strict production management, companies from the selection of components, materials, from the advanced automated operation of machinery to the production process of strict quality control (including the aging of the middle parts), each link affects the LED display The quality of the screen. So how to identify the LED screen is good or bad? The following points hope to bring you some inspiration.
1. Flatness The surface flatness of the LED display should be within ±1mm to ensure that the display image does not distort, and local raised or recessed leads to a blind angle in the viewing angle of the display screen. The flatness is mainly determined by the production process.
2, brightness and viewing angle Indoor full-color screen brightness to 800cd/m2 or more, outdoor full-color screen brightness to 1500cd/m2 or more, in order to ensure the normal operation of the display, otherwise it will be too low to see the brightness The displayed image. The brightness is mainly determined by the quality of the LED die. The size of the viewing angle directly determines the number of display audiences, so the bigger the better. The size of the viewing angle is mainly determined by the packaging method of the die.
3, white balance effect White balance effect is one of the most important indicators of the display. In color science, when the ratio of the three primary colors of red, green, and blue is 1:4.6:0.16, pure white color will be displayed. If the actual proportion is slightly different, there will be a white balance deviation. Generally, it should be noted whether the white color is bluish or yellowish. Green phenomenon. The quality of white balance is mainly determined by the display's control system, and the die also has an impact on the reproducibility of color.
4. Reducibility of the color Reducing color refers to the reproducibility of the display screen to the color, and the color of the display screen must be highly consistent with the color of the playback source, so as to ensure the realism of the image.
5, there is no mosaic, dead point phenomenon Mosaic refers to the display on the regular or often black small four-square, both module necrosis phenomenon, the main reason for the display connector quality used but off. The dead point refers to the single point of the light or darkness appearing on the LED display. The number of dead spots is mainly determined by the quality of the die.
6, there is no color block color block is that there is a more obvious color difference between adjacent modules, the color of the transition to the module as a unit, causing the color block phenomenon is mainly due to poor control system, gray level is not high, scanning The frequency is lower.
1. Flatness The surface flatness of the LED display should be within ±1mm to ensure that the display image does not distort, and local raised or recessed leads to a blind angle in the viewing angle of the display screen. The flatness is mainly determined by the production process.
2, brightness and viewing angle Indoor full-color screen brightness to 800cd/m2 or more, outdoor full-color screen brightness to 1500cd/m2 or more, in order to ensure the normal operation of the display, otherwise it will be too low to see the brightness The displayed image. The brightness is mainly determined by the quality of the LED die. The size of the viewing angle directly determines the number of display audiences, so the bigger the better. The size of the viewing angle is mainly determined by the packaging method of the die.
3, white balance effect White balance effect is one of the most important indicators of the display. In color science, when the ratio of the three primary colors of red, green, and blue is 1:4.6:0.16, pure white color will be displayed. If the actual proportion is slightly different, there will be a white balance deviation. Generally, it should be noted whether the white color is bluish or yellowish. Green phenomenon. The quality of white balance is mainly determined by the display's control system, and the die also has an impact on the reproducibility of color.
4. Reducibility of the color Reducing color refers to the reproducibility of the display screen to the color, and the color of the display screen must be highly consistent with the color of the playback source, so as to ensure the realism of the image.
5, there is no mosaic, dead point phenomenon Mosaic refers to the display on the regular or often black small four-square, both module necrosis phenomenon, the main reason for the display connector quality used but off. The dead point refers to the single point of the light or darkness appearing on the LED display. The number of dead spots is mainly determined by the quality of the die.
6, there is no color block color block is that there is a more obvious color difference between adjacent modules, the color of the transition to the module as a unit, causing the color block phenomenon is mainly due to poor control system, gray level is not high, scanning The frequency is lower.
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