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Phase-variable disk

A phase change type, optical disc technology, applied in optical recording/reproduction, instrumentation, data recording, etc., can solve the problem of not being able to fully improve the repeated storage characteristics of optical discs, and prevent sulfur (S) and oxygen from entering the storage film Diffusion, damage prevention, and improvement of repetitive storage characteristics

Inactive Publication Date: 2006-05-31
LEJIN GUANGDIAN ELECTRONIC CO LTD SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

[0024] Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

[0025] Figure 4 It is a schematic diagram showing the first embodiment according to the present invention. It consists of the following parts: a transparent substrate 20 formed of polycarbonate fibers; a reflective film 21 formed on the above-mentioned display substrate 20; a first dielectric layer 22 formed on the above-mentioned reflective film 21; A first interface layer 23 made of an Al-Y alloy 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 an Al-Y alloy film on the above-mentioned storage film 24 ; and the second dielectric layer 26 formed on the second interface layer 25 .

[0026] 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 thin films, and the memor...

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Abstract

An optical disc of phase change type is prepared as setting optical disc boundary layer between top storage film and bottom storage film and forming said boundary layer normally by AI ¿C Y or Gee ¿C Y alloy film to prevent sculpture and oxygen generated from dielectric layer from diffusion into storage film when repeated shine of laser is carried out in 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, in the process of storing data in phase-change optical discs (CD, DVD, BD), an interface is provided to prevent sulfur (S) and oxygen generated between the storage film and the dielectric layer from diffusing into the storage film. layers of phase-change discs. 【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 ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B7/2534
Inventor 金钟焕
Owner LEJIN GUANGDIAN ELECTRONIC CO LTD SHANGHAI
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