Light source module and electronic device

A light source module comprising:

• a light guiding plate having a light incident surface and a light emitting surface;
• at least one light-emitting element, disposed on the light incident surface to provide a first light, and the at least one light-emitting element including yttrium aluminum garnet (YAG) and a blue light light-emitting diode chip (blue light LED chip), wherein the YAG is encapsulated in the at least one light-emitting element and located between the blue light LED chip and the light guiding plate;
• and
• a quantum dot element, disposed on the light emitting surface of the light guiding plate, and configured to transfer part of the first light into a first monochromatic light, wherein white light can be obtained by a mixing of the first light and the first monochromatic light;
• further comprising:
• an optical element, disposed on a side surface of the light guiding plate, and configured to decrease an intensity of blue light which irradiates the optical element and then is reflected by the optical element, wherein the optical element absorbs blue light or transfers blue light into yellow light.