彩色LED显示屏的设计与实现

The Design and Implementation of Color LED Screen

为了增强灰度均匀性,降低闪烁感,采用逐位分时点亮原理实现LED显示屏256级灰度显示.利用FPGA可编程逻辑器件实现对数据的转换,然后把数据发送给LED驱动电路.最终通过LED驱动电路点亮LED显示屏.实际结果表明采用逐位分时点亮原理能很好地实现LED显示屏256级灰度的显示.

In order to enhance the gray-scale uniformity and reduce light flashing,this paper uses light-by-bit time-sharing principle to realize 256-level grayscale display LED screen.Programmable logic device FPGA is used to implement data conversion and subsequent transmission to the LED driver circuits which eventually light up the LED display.Experimental results prove that the light-by-bit time-sharing theory can be used to achieve good LED screen of 256-level grayscale.