Direct backlight module

A direct backlight module, comprising:

• a diffuser;
• a reflecting plate disposed under the diffuser and having a curved surface, a planar surface and a triangular protrusion, wherein the curved surface is adjacent to the planar surface and the planar surface is adjacent to the triangular protrusion;
• and
• an illumination tube disposed between the diffuser and the reflecting plate and located above the curved surface, wherein the light beams from the illumination tube enter the diffuser directly and via reflections among the curved surface, the planar surface and the triangular protrusion.

A direct backlight module, comprising:

• a diffuser;
• a reflecting plate disposed under the diffuser and having a first triangular protrusion, a planar surface and a second triangular protrusion, wherein the first triangular protrusion is adjacent to the planar surface and the planar surface is adjacent to the second triangular protrusion;
• and
• an illumination tube disposed between the diffuser and the reflecting plate and located above the first triangular protrusion, wherein the light beams from the illumination tube enter the diffuser directly and via reflections among the first triangular protrusion, the planar surface and the second triangular protrusion.