发明授权
- 专利标题： Phase change optical recording medium
- 专利标题（中）： 相变光记录介质
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申请号： US09395573申请日： 1999-09-14
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公开(公告)号： US06240060B1公开(公告)日： 2001-05-29
- 发明人: Akira Kikitsu , Sumio Ashida , Keiichiro Yusu , Katsutaro Ichihara
- 申请人： Akira Kikitsu , Sumio Ashida , Keiichiro Yusu , Katsutaro Ichihara
- 优先权： JP10-260575 19980914
- 主分类号： G11B724
- IPC分类号： G11B724
摘要：
A phase change recording medium comprises a substrate, an interference layer formed on the substrate and a recording layer formed on the interference layer. In this, the reflectance of the crystalline region in the recording layer is lower than that of amorphous region therein, and the interference layer comprises at least three layers of which the dielectric constant differs from that of the adjacent layers. With that constitution, the optical characteristics and the thermal characteristics of the medium are all optimized.
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