Scan mode: In a certain display area, the ratio of the number of lines that are lit at the same time to the number of lines in the entire area.

　　1, static scan:

Static scanning is a "point-to-point" control from the output of the driver IC to the pixel points. Static scanning does not require a control circuit, and the cost is higher than dynamic scanning, but the display effect is good, the stability is good, and the brightness loss is small, etc. advantage.

2. Dynamic scanning: Dynamic scanning implements "point-to-column" control from the output of the driver IC to the pixel points. Dynamic scanning requires a control circuit, and the cost is lower than static scanning, but the display effect is poor, and the brightness of the LED display is lower. Product and solution service providers suffered greater losses.

　　 2. Distinguish by environment:

　　Indoor single and dual color is generally 1/16 scan, indoor full color is generally 1/8 scan, outdoor single and dual color is generally 1/4 scan, outdoor full color is generally static scan.

　　 3. Distinguish by model:

　　1. Scanning method of indoor full-color LED display: P4 and P5 are constant current 1/16, P6 and P7.62 are constant current 1/8.

　　2. Scanning method of outdoor full-color LED display: P10, P12 are constant current 1/2, 1/4, P16, P20, P25 are static.

　　3. The scanning methods of single and double color LED display are mainly constant current 1/4, constant current 1/8 scan, and constant current 1/16 scan.

　　 Four, LED display scanning mode

　　1/4 scan: Under the same other conditions, the 1/4 scan display has only half the brightness of the 1/2 scan display, which is suitable for semi-outdoors and indoors. Its control method is increased from 1/2 of two LEDs to 4 LEDs. The current is scanned among the 4 LEDs.