Invention Grant
- Patent Title: Method for manufacturing disc and method for manufacturing stamper
- Patent Title (中): 制造压模的方法和制造压模的方法
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Application No.: US12542237Application Date: 2009-08-17
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Publication No.: US08168094B2Publication Date: 2012-05-01
- Inventor: Shin Masuhara
- Applicant: Shin Masuhara
- Applicant Address: JP Tokyo
- Assignee: Sony Corporation
- Current Assignee: Sony Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2008-245355 20080925
- Main IPC: B29D11/00
- IPC: B29D11/00

Abstract:
A method for manufacturing a disc includes the steps of performing laser exposure of an inorganic resist master on which a photosensitive layer is formed using an inorganic material, which protrudes in an exposed region, and a surface coat layer is formed on the surface of the photosensitive layer in order to control the shape of protrusion, transferring the shape of protrusion formed by the laser exposure on the inorganic resist master to produce a stamper on which a portion corresponding to the shape of protrusion is a depression, forming a resin substrate using the stamper so that a portion corresponding to the shape of protrusion is a protrusion, and forming a predetermined layer structure on the resin substrate to produce an optical disc.
Public/Granted literature
- US20100072639A1 METHOD FOR MANUFACTURING DISC AND METHOD FOR MANUFACTURING STAMPER Public/Granted day:2010-03-25
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