Patent ID: 8398286
Filing Date: 2013-03-19
Classification: G02B

Abstract:
1. A backlight module, comprising: a light guide plate having an upper surface, a lower surface, a first side surface and a second side surface opposite to the first side surface; a light source positioned on the first side surface of the light guide plate, the light source comprising a plurality of point light sources; a first reflection sheet positioned above the light source and the upper surface of the light guide plate, adapted to reflect light beams emitting from the light source to the light guide plate, the first reflection sheet having a plurality of first portions, a plurality of second portions and a plurality of protrusion portions, wherein the first portions are positioned corresponding to the point light sources of the light source and arranged alternately with the second portions, the protrusion portions extend from the second portions toward the second side surface of the light guide plate; and a second reflection sheet positioned under the lower surface of the light guide plate.