Ming Microelectronics applied for a patent for adaptive optimization method and device for abnormal column color cast of LED display light points

The patent abstract shows that the present invention provides an adaptive optimization method for abnormal column color cast of LED display light points, which includes sampling the port voltage of the output port of each light point; sampling the parasitic capacitance value of each light point; and adaptively adjusting the opening dynamic response of the abnormal port based on the port voltage sampling value and the parasitic capacitance sampling value. The invention provides an adaptive optimization method for color cast of abnormal columns of LED display light points. First, the voltage of the light points is detected and whether it is abnormal; then the parasitic capacitance of the light points is detected and the parasitic capacitance sampling value is output through ADC sampling; finally, based on the parasitic capacitance value obtained by sampling, the abnormal column of light points is individually processed to turn on the dynamic response so that the constant current response speed of the abnormal column is consistent with that of the normal column. As a result, the low-gray display consistency can be improved without changing the constant current loop, and display problems such as abnormal column color casts of light points can be solved to achieve higher LED display screen image restoration.