发明名称 |
Optical recording medium and production process for the medium |
摘要 |
An optical information recording medium is provided in which the active layer is a phase change material capable of absorbing energy and being converted between a substantially amorphous state and a substantially crystalline state. The active layer contains nitrogen, which may be in the form of a nitride or nitrides of the constituent elements of the active layer, or may be a nitrided surface thereof. The inclusion of nitrogen inhibits localized shifting of the active material, which leads to degradation of the recording/erase properties of the medium. The optical recording medium includes a substrate, onto which is deposited in sequence a first dielectric layer, a nitrogen-containing active layer, a second dielectric layer, and a metallic reflecting layer. The second dielectric layer is made thin, so that the cooling rate of the active layer is increased to form a more uniform amorphous state.
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申请公布号 |
US5194363(A) |
申请公布日期 |
1993.03.16 |
申请号 |
US19900559166 |
申请日期 |
1990.07.30 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
YOSHIOKA, KAZUMI;OHTA, TAKEO;UCHIDA, MASAMI;KAWAHARA, KATSUMI;FURUKAWA, SHIGEAKI |
分类号 |
G11B7/243 |
主分类号 |
G11B7/243 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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