Backlight module and liquid crystal display formed therefrom
View Patent ↗A backlight module for providing a light with more uniform light distribution and greater brightness is provided. The backlight module includes at least a luminary for providing a light, a light guide assembly disposed adjacent to the luminary for guiding a first portion of the light, a translucent membrane with a plurality of openings thereon, and a reflector disposed below the light guide assembly. In which, a second portion of the light passes upwardly through the openings and a third portion of the light is directed upwardly by the light guide assembly after being reflected by the translucent membrane and the reflector. Further, the light guide assembly includes a plurality of light guide plates, in which the bottom of at least one light guide plate can be a triangular concave or an arc concave, and the light guide plates can have some doping particles therein.
1. A backlight module, comprising:
at least a luminary for providing a light;
a light guide assembly disposed adjacent to said luminary for directing a first portion of said light; and
a translucent membrane disposed above said luminary comprising a plurality of openings thereon.
2. The backlight module as claimed in claim 1 , wherein said light guide assembly comprises a plurality of light guide plates, and the luminary disposed within.
3. The backlight module as claimed in claim 2 further comprising a doping particle in at least one of said plurality of light guide plates.
4. The backlight module as claimed in claim 2 , wherein at least one of said plurality of light guide plates has a triangular concave or an arc concave at a bottom.
5. The backlight module as claimed in claim 1 wherein a second portion of said light passes upwardly through said openings and a third portion of said light is directed upwardly by said light guide assembly after being reflected by said translucent membrane.
6. The backlight module as claimed in claim 1 further comprising:
a reflector disposed below said light guide assembly for reflecting said light;
a diffuser disposed above said light guide assembly and said translucent membrane for distributing said light; and
a lens sheet disposed above said diffuser for modifying a direction of said light.
7. The backlight module as claimed in claim 1 , wherein said luminary is a cold cathode fluorescent lamp.
8. The backlight module as claimed in claim 1 , wherein said translucent membrane is one of an arc membrane and a planar membrane.