is often in the loop playback video status, and this dynamic display in the row switch will give the column or line of parasitic capacitor charge, causing some at the moment should not be bright LED lights appear dark, this is called drag-shadow phenomenon.
The main causes of drag-and-drop phenomena are as follows:
① Graphics driver problem.You can try to update the video card driver or reinstall the video driver, and it is recommended that you adjust the resolution and refresh rate, or it may be related to the response time of the flat panel.
② video card problem.You can try reseating and cleaning the gold fingers while you can see if the video card fan is working properly.
③ the data line problem.Need to replace the data cable to see, or check whether the data line has bends.
④ screen problem. The VGA line, check whether this line is connected to normal, there is no loose problem.Can replace a good quality of the VGA line to try, and the other VGA line to the power cord far away.
⑤ monitor problem.Connect the monitor to another normal computer, and if the problem persists, it may be the monitor problem. LED Display screen
Shadow technology can make the display more delicate, so that the screen display to achieve high-definition quality, low power consumption in the long-term use of LED display system to save energy in the way to achieve low-cost applications and energy-saving environmental protection requirements; The higher the refresh rate, the more stable the display screen, providing technical support for fine and high-quality display, And this kind of display effect also makes the human eye watch without fatigue, and can meet the needs of high-speed shooting.
It is so, promote the effect of all aspects of promotion, but also a strong impetus to the entire LED display technology development.
The current extinction technology effectively eliminates the phenomenon of drag and shadow, when row (n) row with row (n+1) line in the time, the current extinction function automatically to the parasitic capacitor cc charge, when row (n+1) line, will not pass the lamp 2 to the parasitic capacitor cc charge, thereby eliminating the drag-and-drop phenomenon. In order to reduce the power consumption of LED display, Low-power products are introduced. By reducing the constant current inflection point voltage, and thus reduce the LED display power supply voltage. This method also because of reduced power supply voltage, can be a red light must be connected to the voltage drop of 1V resistance.
Through these two aspects improvement, achieves the low power consumption, the high quality application. In short, whether the shadow technology or current extinction technology, driving technology is the most important role is to keep the picture stable and clear, with the computer graphics driver, to ensure smooth quality, and finally achieve the LED display high-definition display