| 摘要 |
A backlight module includes a light guide plate, a plurality of light emitting devices, and a composite optical film. The light guide plate has a light incident surface, a light exit surface, and a bottom surface, wherein the light exit surface is opposite to the bottom surface, and the light incident surface is connected with the light exit surface and the bottom surface. The light emitting devices are disposed beside the light incident surface of the light guide plate. Each of the light emitting devices has a light emitting surface facing to the light incident surface, wherein the light emitting surface provides a light beam. The composite optical film is disposed between the light emitting surface and the light incident surface and includes a diffusion layer and a partially transmissive and partially reflective layer. |
