Backlight module, preparation method thereof and display device

The invention relates to the technical field of display, and discloses a backlight module, a preparation method thereof and a display device. The backlight module is provided with a light-emitting area and a first non-light-emitting area, the first non-light-emitting area comprises a first binding area, a first bending area and a second binding area which are connected in sequence, and the first binding area is closer to the light-emitting area relative to the second binding area; the backlight module comprises a substrate, a first conductive layer, an insulating layer group and a second conductive layer which are sequentially stacked, the first conductive layer comprises a first binding pin and a connecting wire, and the first binding pin is connected with the first part connecting wire; the second conductive layer comprises a second binding pin, and the second binding pin is connected with the second part connecting wire; the first binding pin is located in the second binding area, and the second binding pin is located in the first binding area; or, the first binding pin is located in the first binding area, and the second binding pin is located in the second binding area. The partition density of the light-emitting area of the backlight module is high.