IMPROVED SUBSTRATE DESIGN FOR BONDED STORAGE DISKS AND METHOD OF MAKING SAME

摘要

An improved substrate and stamper holder and method of forming substrates are disclosed. According to a preferred embodiment of the invention, a substrate for a DVD has a moat (304) with a capillary barrier shape. Under one embodiment, the moat has a region (306) with an abrupt outer diameter transition. One embodiment has the outer diameter transition at approximately at a right angle relative to a registering surface of the substrate. Another embodiment of the invention provides a wider moat. The improvements reduce the likelihood of resin wicking past the moats.