A new type of LED smart glass display driver was proposed. This driver was based on the principle of pulse width modulation. The special driver chip in the driver converted the input serial video data into multi-channel parallel grayscale control data， and then drove the LED smart glass display through the FPC soft board to realize the full cycle of each frame of data and 4 096 levels of grayscale multi-level display. Multiple drivers could be cascaded， so that multiple LED smart glass displays could be cascaded to increase the display screen. At the same time， the driver also could have the advantages of light weight， moderate volume and price. Each pixel of the screen has bright colors and stable display， and could be widely used in indoor and outdoor LED smart glass display.