Patent ID: 8052901

Claim:
A method for manufacturing a light guide plate comprising a plurality of microstructures, the method comprising the following steps: providing a light guide plate mold comprising a light guide plate mold substrate, a plurality of heating members, and a plurality of cooling members, the light guide plate mold substrate defining a plurality of grooves, the heating members respectively received in the grooves, the grooves and the heating members cooperatively defining a plurality of receiving spaces, the cooling members disposed in the light guide plate mold substrate, and each cooling member positioned between two corresponding adjacent grooves of the light guide plate mold substrate; placing a light guide plate substrate on the light guide plate mold; melting the portions of the light guide plate substrate spatially corresponding to the heating members using the heating members such that the receiving spaces are filled with the melted portions of the light guide plate substrate; cooling the light guide plate substrate and the light guide plate mold using the cooling members; and removing the light guide plate mold to obtain the light guide plate having a plurality of microstructures corresponding to the receiving spaces.