LED DISPLAY MODULE AND DISPLAY SCREEN

An LED display module and display screen. The LED display module comprises LED lamp beads (1, 2), a PCB light board, and a bottom housing (7); one end of the PCB light board is disposed on the bottom housing (7), the LED lamp beads (1, 2) are arranged at the other end of the PCB light board, and the PCB light board comprises a light-limiting layer (3) and a light-isolation layer (4), the light-isolation layer (4) being disposed on the light-limiting layer (3); the light-limiting layer (3) comprises a light-limiting groove (5), the light-isolation layer (4) comprises a light-isolation groove (6), and the light-limiting groove (5) is disposed in the light-isolation groove (6). The LED illuminating lamp bead (2) is disposed in the light-limiting groove (5), the LED display lamp bead (1) is disposed on the light-isolation layer (4), and the two types of lamp bead have an optical path difference between same, and have the light-limiting groove (5) and the light-isolation groove (6) arranged between same. While ill