If you're going to buy LED displays, you'd better check the following information for reference. 1. Flatness. LED display's surface flatness should be within ±1mm so as that the displayed image is not distorted. A partially-raised section or other types of unflatness would cause a viewing angle problem. Flatness is mainly determined by the quality of production process. 2. Brightness and View Angle. Proper brightness is a key factor to LED displays' performance. The brightness of indoor full-color LED display is about 800~2000cd/m2, and outdoor full-color displays' brightness is 5000~7500cd/m2. A higher or lower brightness over an actual need would lead to invisibility. Screen brightness is determined by the size of LED chips. View angle directly affects how many audience the display is good for; thus, in a certain circumstance, the larger the view angle, the better the LED display. Outdoor full-color LED Display 3. White Balance Effect. Whit
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