Patent ID: 8920018

Claim:
A front light module, comprising: a light source; a light guide plate, having a first refractive index and having a side face neighboring said light source; a medium layer, placed over said light guide plate and having a second refractive index, said medium layer prevents incident light beams of large angles of incidence from passing through a top face of said light guide plate, wherein said second refractive index is smaller than said first refractive index; a transparent material layer, placed over said medium layer; and a transparent glue layer, placed under said light guide plate and having a third refractive index, said transparent glue layer has a plurality of pillar structures, wherein said third refractive index is larger than the refractive index of air and smaller than or equal to said first refractive index; wherein said medium layer is located above said light guide plate and said transparent glue is located below said light guide plate.