Light guiding system, edge-lighting backlight module and LCD device

An edge-lighting backlight module comprising:

• a light guide plate, comprising a light-in side, a bottom side and a light-out side being opposite to each other and coupled to the light-in side;
• a back bezel, disposed under the bottom side;
• an optical film, disposed over the light-out side;
• and
• a light guiding system comprising:
• an ambient light gathering system, facing to ambient light, for absorbing the ambient light to generate absorbed light;
• a plurality of light guiding devices, each light guiding device having a light input end and a light output end near to the ambient light gathering system, and the absorbed light from the light input end being guided to the light output end;
• and
• a wedge light guiding bar having a light-out surface, a light-in surface, an inclined surface, and a first surface, wherein the light-out surface is connected to the light-in surface, the inclined surface is a single surface remaining a specific angle, is adjacent to and directly connected between the first surface and light-in surface, and is opposite to the light-out surface, and is directly connected between the first surface and light-in surface and is opposite to the light-out surface, and the light-in surface is wider than the first surface and is near the light out end of the plurality of light guiding devices,
• wherein a plurality of cylindrical nodes are set up on the inclined surface and protrude from the inclined surface;
• wherein the plurality of cylindrical nodes are arranged to scatter light from the light-in surface so as to make the light from the light-out surface more even.

A liquid crystal display device comprising:

• a light guide plate, comprising a light-in side, a bottom side and a light-out side being opposite to each other and coupled to the light-in side;
• a back bezel, disposed under the bottom side;
• an optical film, disposed over the light-out side;
• a display panel, disposed over the optical film;
• and
• an edge-lighting backlight module comprising:
• an ambient light gathering system, facing to ambient light, for absorbing the ambient light to generate absorbed light;
• a plurality of light guiding devices, each light guiding device having a light input end and a light output end near to the ambient light gathering system, and the absorbed light from the light input end being guided to the light output end;
• and
• a wedge light guiding bar having a light-out surface, a light-in surface, an inclined surface, and a first surface, wherein the light-out surface is connected to the light-in surface, the inclined surface is a single surface remaining a specific angle, is adjacent to and directly connected to the first surface and light-in surface, and is opposite to the light-out surface, and the light-in surface is wider than the first surface and is near the light out end of the plurality of light guiding devices,
• wherein a plurality of cylindrical nodes are set up on the inclined surface and protrude from the inclined surface;
• wherein the plurality of cylindrical nodes are arranged to scatter light from the light-in surface so as to make the light from the light-out surface more even.