Optical module and an electronic device

An optical module, comprising:

• a substrate;
• a reflective layer disposed on the substrate;
• a first light guide plate disposed on the reflective layer, the first light guide plate having a first surface and a second surface opposite to the first surface, the second surface facing the substrate, the first light guide plate extending in a first direction and defining a first side portion and an opposite second side portion;
• a first pattern layer formed on the first surface or the second surface of the first light guide plate;
• at least one first light-emitting element disposed on the substrate and configured to emit light toward the first side portion of the first light guide plate;
• a supporting frame disposed above the first light guide plate;
• a first light-transmissive layer disposed on the supporting frame and away from the substrate;
• at least one second light-emitting element disposed on the substrate;
• a second light guide plate disposed on the first light-transmissive layer, the second light guide plate having a third surface and a fourth surface opposite to the third surface, the fourth surface facing the substrate, the second light guide plate extending in the first direction and defining a third side portion and an opposite fourth side portion, wherein the fourth side portion is adjacent to a light-emitting surface of the at least one second light-emitting element;
• a second pattern layer formed on the third surface or the fourth surface of the second light guide plate;
• and
• a second light-transmissive layer disposed on the second light guide plate;
• wherein the at least one first light-emitting element and the at least one second light-emitting element are controllable to be selectively turned on or off.