Light source assembly

A light source assembly, comprising:

• a substrate;
• a light-emitting element disposed on the substrate;
• a reflective layer disposed vertically between the light-emitting element and the substrate;
• an optical film at least partially overlapped with the substrate, wherein the optical film comprises a wavelength transformation layer;
• and
• a diffuser film at least partially overlapped with the optical film, wherein the light-emitting element is disposed vertically between the diffuser film and the reflective layer, wherein the diffuser film is directly adjacent to the light-emitting element in a vertical direction, wherein a haze of the diffuser film is greater than 85%, and a thickness of the diffuser film ranges from 0.04 mm to 0.35 mm,
• wherein the optical film and the diffuser film are capable of transmitting at least a part of light emitted from the light-emitting element.