| 主权项 |
1. A backlight module, comprising:
a light guiding plate; at least one light guiding point which is formed on a bottom surface of said light guiding plate; an upper light-permeable thin film disposed on atop surface of said light guiding plate; a lower light-permeable thin film disposed on said bottom surface of said light guiding plate and opposite to said upper light-permeable thin film; and a luminous element from which light beams are incident to said light guiding plate; wherein said upper and lower light-permeable thin films respectively have refractive indices lower than that of said light guiding plate so that a total internal reflection of the light beams occurs between said upper and lower light-permeable thin films, and wherein said light guiding point scatters and directs the light beams to pass through said upper light-permeable thin film. |
