Backlight module

A backlight module comprising a back plate, a first light source module, and an optical component, the optical component comprising a side surface and a bottom surface perpendicularly connected to the side surface, the first light source module comprising a plurality of first light emitting diodes (LEDs) disposed on the back plate and at the side surface of the optical component for emitting light at a first wavelength toward the side surface of the optical component, characterized in that:

• the backlight module further comprises a second light source module and a reflector sheet, the second light source module comprises a plurality of second LEDs disposed near the bottom surface of the optical component for emitting light at a second wavelength toward the bottom surface of the optical component, light produced after the light at the first wavelength being mixed with the light at the second wavelength becomes white light after passing through the optical component, the optical component comprises an inclined surface connected to the side surface and to an emitting surface, and the reflector sheet is attached onto the inclined surface for reflecting a portion of the light at the second wavelength refracted at the inclined surface.