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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 uniformity of the gray and reduce the flicker, a bit by bit time-to-light principle is adopted to realize a 256-level gray scale display of the LED display, the FPGA is used to convert the data and then the data is sent to the LED driving circuit. Finally, the LED display circuit is lit by the LED driver circuit, and the actual result shows that the 256-level gray scale display of the LED display can be realized well using the bit by bit time-lit principle.