Full color LED display system design

Author: From: Time: 2019-10-28

 As a new display device, LED display has been widely used in recent years. With the continuous updating of technology, the LED display is developing in the direction of full color. An LED display control system is designed. The system uses the ARMCortex-M3 core chip STM32F103ZET6 as the control center, and the programmable logic device EP1C6 completes the data refresh and communicates via Ethernet. The system can support the image and animation display of 256-level grayscale full-color LED display, and it can be easily controlled remotely.

LED display screen is a modern flat display screen composed of LED dot matrix module or pixel unit. It has the advantages of high luminous efficiency, long service life, large viewing angle range, rich color and strong adaptability to indoor and outdoor environments. In the late 1980s, it developed rapidly around the world and quickly became a representative mainstream product for large-screen flat panel displays. In recent years, with the rapid decline in the price of blue LED products, the price of full-color LED displays has gradually increased. Lower, market demand has increased dramatically, and applications are becoming more common. The current LED display control system mostly uses ARM processor to complete the function of the whole system. This control system has great limitations in data processing speed and affects the continuity of display effect. Based on the analysis of the structure characteristics of STM32 microprocessor bus, the control system scheme of STM32+FPGA is proposed. This scheme fully utilizes the flexible memory control technology of STM32 microprocessor and the flexibility of programmable logic device. Sexuality improves the speed of system data processing, and simplifies the circuit structure and facilitates debugging.

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