Features: 1) Combining several global leading display board control technologies, such as grey level code technology, brightness control technology, and nonlinearly rectifying technology 2) Modularization, high resolution and high contrast design, vivid dynamic display 3) Arbitrarily exchanging the display or displaying synchronized video 4) Long using life, can reach more than 100,000 hours, while the power consumption is lower than one tenth of lamp or neon 5) Economical maintenance and cost saving