Backlight module and display device

A display device, comprising a backlight module and a display panel, the backlight module comprises a light guide plate, a light source, an optical film set, at least one light shielding layer, a back plate and a plastic frame, wherein

• the light guide plate has a light incident surface and a light emitting surface adjacent to the light incident surface, the light guide plate is disposed on the back plate;
• the light source is disposed beside the light incident surface;
• the optical film set comprises a first surface, a second surface and at least one end surface, the first surface and the second surface are opposite to each other, the at least one end surface is connected to the first surface and the second surface, the optical film set is disposed on the light emitting surface of the light guide plate, and the first surface faces the light emitting surface;
• the at least one light shielding layer is disposed only on the at least one end surface without extending to cover the first surface and the second surface;
• the display panel faces the second surface of the optical film set, wherein the optical film set is located between the display panel and the light guide plate;
• the plastic frame is assembled on the back plate for receiving and fixing the light guide plate and the optical film set;
• and
• the back plate and the plastic frame do not cover the at least one light shielding layer at a side of the optical film set away from the light guide plate.