Stamper for optical disc, method for manufacturing optical...

Details Stamper for optical disc, method for manufacturing optical... Stamper for optical disc, method for manufacturing optical...

2011-06-28

2011-06-28

Daniels, Matthew J (Department: 1741)

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Light polarizing article or holographic article

C369S272100, C216S002000, C216S024000

Reexamination Certificate

active

07968017

ABSTRACT:
This invention relates to a stamper for optical disc and a method for manufacturing an optical disc by using this stamper. A photoresist is applied to a substrate (2) and this photoresist is exposed, developed and then transferred to form a disc master which has a recess/protrusion pattern formed on its one side. The one side of the disc master (20) is etched to narrow the width of a protruding part constituting the recess/protrusion pattern, and the recess/protrusion pattern of the disc master (20) with the reduced width of the protruding part is transferred to form a stamper (30). The recess/protrusion pattern provided on the stamper (30) is transferred to form a predetermined pattern on a substrate of an optical disc.

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