PROCESS FOR FABRICATING A MOLD OF LIGHT-GUIDE PLATE, WHICH HAVING NON-ISOSCELES TRIANGLED SECTIONAL SHAPE ON ITS SURFACE, AND THE MOLD THEREOF

摘要

Disclosed are a mold for a light-guide plate and a fabricating method thereof. The mold has unevenness, which has a non-isosceles triangular sectional shape. The method comprises the steps of: preparing a substrate having a surface which is parallel to neither of two crystal planes which can be anisotropically etched; forming an etching mask on the surface of the substrate; subjecting the substrate to an anisotropic etching to form the grooves on the surface of the substrate, each of the grooves having a non-isosceles triangular sectional shape; forming the mold for the light-guide plate after filling a material for the mold in the grooves and attaching the material onto the surface of the substrate; and separating the mold from the substrate.