The invention relates to an LED electronic display screen circuit board waterproof method and a display module. The display module comprises a bottom case, a
face shield and an
LED circuit board, the
LED circuit board is installed on the front surface of the bottom case, and waterproof glue is poured into the front surface of the
LED circuit board. In order to prevent rainwater from entering the back side of the bottom case, the inner side of a framework of the bottom case is provided with a base plate, positions, of the base plate, corresponding to the a
signal port and a power supply port of the LED circuit board are provided with a
first pass-through opening and a second pass-through opening, when the LED circuit board is installed on the bottom case, the
signal port and the power supply port pass through the pass-through openings, and waterproof glue is poured into the periphery of the
signal port and the power supply port, thus, the back side of the display module is waterproof, in order to ensure that a driving
integrated circuit on the LED circuit board maintains a good heat dissipation effect, the position, of the base plate, corresponding to the driving
integrated circuit on the LED circuit board is provided with a heat dissipation block, and the driving
integrated circuit on the LED circuit board clings to the inner surface of the heat dissipation block. Compared with the existing products, the display module is advantaged in that a waterproof aim is reached, and the heat dissipation problem is solved.