Backlight module, assembly method of backlight module, and display device

A display device, comprising a display panel and a backlight module, the display panel being disposed on a light-emitting side of the backlight module, the backlight module comprising a backplane, a light bar, a light-guide plate, a reflective sheet fixed on a first side of the backplane, and an adhesive layer, wherein

• the light bar comprises a circuit board and a plurality of light sources, wherein the circuit board has a first region and a second region connected with the first region, and the plurality of light sources are all fixed on the first region, the adhesive layer is fixed on the second region, and the light-guide plate is at least partially fixed on the second region via the adhesive layer;
• the light bar and the light-guide plate are both mounted on the first side of the backplane, and the reflective sheet is between the backplane and the light-guide plate;
• and
• the backlight module further comprises a reflective layer disposed between the circuit board of the light bar and the adhesive layer, wherein the reflective layer is configured to reflect part of light rays emitted from the plurality of light sources to enter the light-guide plate.

An assembly method of a backlight module, comprising:

• fixing a reflective sheet on a first side of a backplane;
• fixing a reflective layer on a circuit board of a light bar;
• forming an adhesive layer on the reflective layer, wherein the reflective layer is disposed between the circuit board of the light bar and the adhesive layer and configured to reflect part of light rays emitted from the plurality of light sources to enter the light-guide plate;
• attaching a light-guide plate to the adhesive layer to fix at least part of the light-guide plate on the light bar;
• and
• mounting the light bar and the light-guide plate on the first side of the backplane, the reflective sheet being between the backplane and the light-guide plate.