Patent ID: 8596854

Claim:
A light-guide module, comprising: a light-guide sheet, comprising a light-emergent region and a plurality of localized micro-structures, wherein the light-emergent region and the localized micro-structures are located on a first surface of the light-guide sheet, and the localized micro-structures are distributed except the light-emergent region, the localized micro-structures comprise a first region and have a plurality of arc grooves; a light source, comprising a plurality of light-emitting devices disposed on the first surface, wherein lights emitted from the light-emitting devices enter the light-guide sheet through the localized micro-structures, a light-emitting area of each of the light-emitting devices is A, and the localized micro-structures satisfy a following condition: in the localized micro-structures of the first region covered by the light-emitting devices, an area occupied by the arc grooves having aspect ratios greater than 0.5 is greater than or substantially equal to 0.5 A.