Manufacturing method of optical disc and optical disc
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United States of America Patent
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Sep 21, 2010
Grant Date -
Feb 14, 2008
app pub date -
Nov 17, 2005
filing date -
Nov 22, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An optical disc of a desired thickness is formed by adhering a stamper substrate 20 to an L0 layer substrate 10. Concave/convex portions to transfer fine concave/convex portions for an L1 layer are formed on one principal plane of the stamper substrate 20. After the fine concave/convex portions for the L1 layer were transferred and formed onto an intermediate layer 32 by the stamper substrate 20, the stamper substrate 20 is adhered to the L0 layer substrate 10.
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