Backlight module, preparation method thereof and display panel

The invention provides a backlight module, a preparation method thereof and a display panel, belongs to the technical field of display, and can at least partially solve the problems that an existing display panel is tedious in preparation process and low in preparation efficiency. The invention discloses a backlight module. The backlight module comprises a light source; the flexible circuit board is connected with the light source and used for providing voltage for the light source, and the flexible circuit board is provided with a first golden finger; the back plate is used for bearing the light source and the flexible circuit board, the back plate is provided with a mounting through hole, and at least part of the first golden finger is arranged in the mounting through hole in a penetrating mode; and the first end of the connecting structure is provided with a second golden finger, and the second golden finger is connected with the first golden finger of the flexible circuit board. 本发明提供一种背光模组及其制备方法、显示面板，属于显