Backlight module and electronic device having the same

An electronic device comprising:

• a housing;
• and
• a backlight module accommodated in the housing and comprising:
• a substrate;
• a light guide plate arranged on the substrate and comprising a bottom surface, a top surface, and a plurality of receiving recesses, wherein the bottom surface and the top surface are facing away from each other, the bottom surface is closer to the substrate than to the top surface, the plurality of receiving recesses are recessed inward from the bottom surface, each of the plurality of receiving recesses comprises a groove bottom surface and at least one light incident surface connected to the groove bottom surface, a normal direction of each of the at least one light incident surface is not parallel to a normal direction of the bottom surface;
• a plurality of light sources electrically connected to the substrate and correspondingly arranged in the plurality of receiving recesses of the light guide plate, wherein each of the plurality of light sources is configured to emit light toward the at least one light incident surface of a corresponding receiving recess of the plurality of receiving recesses;
• and
• each of the plurality of light sources is arranged in one of the plurality of receiving recesses;
• a plurality of first light shielding structures and a plurality of second light shielding structures, wherein the plurality of first light shielding structures are arranged in parallel with each other in the light guide plate, and the plurality of second light shielding structures are arranged in parallel with each other in the light guide plate, an extension direction of each of the plurality of first light shielding structures and an extension direction of each of the plurality of second light shielding structures are not parallel, and each of the plurality of first light shielding structures and each of the plurality of second light shielding structures intersect with each other to separate any two adjacent ones of the plurality of light sources from each other;
• a light transmittance of each of the plurality of first light shielding structures is less than 10%, and a light transmittance of each of the plurality of second light shielding structures is less than 10%.