Patent ID: 7384729

Claim:
A mold manufacturing method, comprising the steps of: (a) disposing a mask layer on two opposite sides of a first substrate, wherein the first substrate is transparent to a predetermined light source and has a front side and a backside, which are the two opposite sides, and the mask layer has a top portion and a bottom portion respectively disposed on the two opposite sides of the first substrate, and the top portion and the bottom portion are arranged alternately; (b) forming a photoresist layer on the front side of the first substrate; (c) providing the predetermined light source to illuminate the backside of the first substrate so as to expose the photoresist layer to form an exposed portion and an unexposed portion; and (d) removing the unexposed portion to form a patterned structure having trenches and micro-holes arranged alternately; (e) forming a metal layer on the patterned structure of the photoresist layer and the first substrate; and (f) removing the photoresist layer and the first substrate to remain the metal layer.