Backlight module and liquid crystal device using the same

A liquid crystal displaying device, comprising:

• a backlight module, comprising:
• a light guide plate having a main body, the main body having a bottom light incidence surface and a top light emitting surface opposite to the light incidence surface, the main body comprising a plurality of light-separation grooves, the light incidence surface having a plurality of accommodating grooves, the accommodating grooves having a first light incidence part and a second light incidence part being extended from one side of the first light incidence part, the light-separation grooves being perpendicular to the accommodating grooves and optically separating the light emitting surface into a plurality light guide surfaces;
• a light source comprising a circuit board and a plurality of light bars electrically connected thereto, the light source being disposed on the light incidence surface of the main body of the light guide plate and the light bars being disposed in the accommodating grooves, wherein a predetermined distance located between the light bar and the second light incidence part forms a light mixing space;
• wherein the main body has a plurality of through-holes which are corresponding to holes disposed on the circuit board;
• a base having a platform on an inner surface thereof and a plurality of fastening holes being disposed on a surface of the platform;
• a supporting element passing through the through-holes, the holes and the fastening holes for supporting an optical module and for fastening the backlight module on the platform;
• and;
• a liquid crystal displaying layer disposed on the backlight module.