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Phase changing type light disk

A phase-change optical disc technology, which is applied in optical recording/reproduction, instrumentation, data recording, etc., can solve the problems of not being able to fully improve the repeated storage characteristics of optical discs, so as to prevent damage, improve repeated storage characteristics, and enhance Adhesive effect

Inactive Publication Date: 2006-06-14
LEJIN GUANGDIAN ELECTRONIC CO LTD SHANGHAI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method also cannot sufficiently improve the repeated storage characteristics of the disc.

Method used

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Embodiment Construction

[0019] In the following, the embodiments according to the present invention will be described in detail based on the accompanying drawings.

[0020] Figure 5 is a schematic diagram showing an idealized embodiment in accordance with the present invention. It consists of the following parts: a transparent substrate 20 made of polycarbonate fibers; a reflective film 21 formed on the above-mentioned transparent substrate 20; a first dielectric layer 22 formed on the above-mentioned reflective film 21; A first interface layer 23 made of a TiGe-N alloy thin film on the layer 22; a storage film 24 formed on the above-mentioned first interface layer 23; a second interface layer 25 made of a TiGe-N alloy thin film on the above-mentioned storage film 24 ; and the second dielectric layer 26 formed on the second interface layer 25 .

[0021] The reflective film 21 is usually made of an AgPdCu alloy layer, the first and second dielectric layers 22 and 26 are usually made of ZnS-SiO2 thi...

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Abstract

The invention relates to a variable phase CD, concretely relating to an interface layer in a variable phase CD, situated between memory film and upper and lower parts of the memory film, and usually composed of TiGe-N alloy film layer, so as to be able to prevent the flow direction memory film diffusion happening from the dielectric layer as repeatedly making laser irradiation in the data storing course.

Description

【Technical field】 [0001] The present invention relates to a phase-change optical disc used as a storage medium for storing information. Specifically, it relates to a phase-change type optical disk provided with an interface layer to prevent sulfur (S) from diffusing into the storage film between the storage film and the dielectric layer. 【Background technique】 [0002] In general, a phase-change optical disk used as a storage medium for storing information uses a concentrated laser beam to irradiate a local area of ​​​​the storage layer to heat up / melt it, and uses a disk structure with a faster thermal diffusion rate to rapidly cool it ( quenching) to transfer the amorphous film to the crystalline matrix. In this way, information can be stored. At the same time, when reading data, the data can be read out by using the difference in reflectivity between the stored amorphous film and the crystalline matrix. When the stored information is deleted, it is irradiated and heate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B7/2433G11B7/258
Inventor 金钟焕
Owner LEJIN GUANGDIAN ELECTRONIC CO LTD SHANGHAI
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