Backlight module and display device

A backlight module comprising a plurality of first light sources and a planar diffusion plate, wherein

• in a 3D display mode, the plurality of first light sources is distributed in different scanning areas;
• each of the scanning areas corresponds to a display area;
• the backlight module further comprises:
• a barrier structure, the barrier structure being a light blocking surface having a reflective coating, provided between adjacent scanning areas and configured to prevent, by reflection, light emitted by the first light sources in the scanning areas other than a current scanning area from entering into the display area corresponding to the current scanning area;
• wherein a recess is defined by one of light blocking surfaces corresponding to the current scanning area and one of light blocking surfaces corresponding to an adjacent scanning area;
• wherein the backlight module further comprises:
• a quantum material filling the recess;
• and
• a second light source corresponding to the recess and configured to generate excitation light to excite the quantum material to emit light.