source:Industry Trends release time:2023-05-10 Hits: Popular:led screen wholesaler
EN enable signal: The entire screen brightness control signal is also used for the display of the display. As long as it adjusts its duty ratio, it can control the change of brightness. When the enable signal is abnormal, the entire screen will occur, dark, or tail -tailed.
ABCD line signal: Only when the dynamic scan display is displayed. ABCD is actually a binary number. A is the lowest level. If the maximum range of the ABCD signal control is used in binary It is because the AB signal is expressed in 4 lines (11). When the line control signal is abnormal, the phenomenon such as dislocation, highlighting or image overlap will occur.
CLK clock signal: The displacement pulse provided to the displacement register, each pulse will cause data to move in or out of one digit. The data on the data mouth must be coordinated with the clock signal to transmit the data normally. The frequency of the data signal must be 1/2 times of the frequency of the clock signal. In any case, when the clock signal is abnormal, the whole plate will show a mess.
Data signal: Provide data required for display images. It must be coordinated with the clock signal to transmit the data to any display point. Generally, the red and green data signal in the display is separated. If a data signal is short to the positive or negative electrode, the corresponding color will appear full or not bright. When the data signal is suspended, the corresponding color display display The situation is uncertain.
STB lock signal: Send the data in the displacement register to the lock memory, and display the content of its data through the drive circuit. However, because the drive circuit is controlled by the EN enable signal, the prerequisite for lighting must be to enable the state. The lock signal also needs to be coordinated with the clock signal to display a complete image. In any case, when the lock signal is abnormal, it will make the whole plate display a mess
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