Patent ID: 8696188
Filing Date: 2014-04-15
Classification: G02B

Abstract:
1. A method for manufacturing a light guide plate, the method comprising: defining at least one dot area and at least one non-dot area on a mask; performing a lithography and etching process using the mask a mold to form at least one recess having a rough surface on the mold and leave at least one non-etched microstructure on the mold, wherein the recess corresponds to the non-dot area, and the non-etched microstructure corresponds to the dot area; and performing an injection molding process using the mold to form the light guide plate, wherein the light guide plate has at least one protrusion having a rough surface on the light guide plate and at least one indented microstructure in the light guide plate, wherein the protrusion corresponds to the recess, and the indented microstructure corresponds to the non-etched microstructure.