Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Information recording medium

A technology of information recording and media, applied in information storage, data recording, temperature recording, etc., can solve the problems of inability to ensure the stability of amorphous phase, decrease of signal quality, decrease of crystallization temperature, etc., and achieve high-quality record preservation High performance, good record retention, and high erasing performance

Active Publication Date: 2007-01-31
PANASONIC CORP
View PDF1 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, since GeTe is replaced by SnTe, the concentration of Ge decreases
As a result, the optical change of the recording layer is reduced, which causes the problem of a decrease in signal quality, and the problem that the stability of the amorphous phase cannot be ensured due to a decrease in the crystallization temperature

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Information recording medium
  • Information recording medium
  • Information recording medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0092] As the first embodiment of the present invention, an example of an optical information recording medium that uses laser light to perform recording and reproduction of information will be described. figure 1 Shows a partial cross section of the optical information recording medium.

[0093] Such as figure 1 The information recording medium 100 shown has the following structure: a first dielectric layer 102 is formed on one surface of a substrate 101, a first interface layer 103 is formed on the surface of the first dielectric layer 102, and a first interface layer 103 is formed on the surface of the first interface layer 103. The recording layer 104 is formed on the surface, the second interface layer 105 is formed on the surface of the recording layer 104, the second dielectric layer 106 is formed on the surface of the second interface layer 105, and the light absorption correction is formed on the surface of the second dielectric layer 106 In the layer 107, a reflective ...

Embodiment approach 2

[0148] As the second embodiment of the present invention, an example of an optical information recording medium that uses laser light to record and reproduce information will be described. figure 2 Shows a partial cross section of the optical information recording medium.

[0149] Such as figure 2 The illustrated information recording medium 200 has the following structure: a reflective layer 207 is formed on one surface of a substrate 208, a second dielectric layer 206 is formed on the surface of the reflective layer 207, and a second dielectric layer 206 is formed on the surface of the second dielectric layer 206. In the second interface layer 205, a recording layer 204 is formed on the surface of the second interface layer 205, a first interface layer 203 is formed on the surface of the recording layer 204, and a first dielectric layer 202 is formed on the surface of the first interface layer 203, and further, A cover layer 201 is formed. The information recording medium of t...

Embodiment approach 3

[0174] As the third embodiment of the present invention, an example of an optical information recording medium that uses laser light to record and reproduce information will be described. image 3 Shows a partial cross section of the optical information recording medium.

[0175] Such as image 3 The illustrated information recording medium 300 has a structure in which a substrate 315, a second information layer 316, an intermediate layer 308, a first information layer 317, and a cover layer 301 are arranged in this order. In more detail, the second information layer 316 has a second reflective layer 314, a fifth dielectric layer 313, a third interface layer 312, a second recording layer 311, a second interface layer 310, and a Four dielectric layers 309. The intermediate layer 308 is formed on the surface of the fourth dielectric layer 309. The first information layer 317 is sequentially arranged with a third dielectric layer 307, a first reflective layer 306, a second dielectric...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

In an information recording medium on and from which information is recorded and reproduced by applying light or electric energy, a recording layer which generates reversible phase change is formed so as to include a material containing Ge, Bi, Te and an element "M" which material is expressed with (GeTe) x [(M 2 Te 3 ) y (Bi 2 Te 3 ) 1-y ] 100-x (mol %) wherein "M" represents at least one element selected from A1, Ga and In, and "x" and "y" satisfy 80‰¤x<100 and 0<y‰¤0.9, whereby the medium is obtained which ensures a high erasability and an excellent archival characteristic at a high linear velocity and in a wide range of linear velocities.

Description

Technical field [0001] The present invention relates to an information recording medium for optically or electrically recording, erasing, rewriting, and reproducing information. Background technique [0002] The inventor developed 4.7GB / DVD-RAM (hereinafter referred to as DVD-RAM) as a large-capacity rewrite-type phase change information recording medium that can be used as data files and image files. In addition, the corresponding 2x speed and the corresponding 3x speed DVD-RAM have been commercialized. [0003] An example of the material of the recording layer that is put into practical use in DVD-RAM is Ge-Sn-Sb-Te (for example, refer to Japanese Patent Laid-Open No. 2001-322357). The Ge-Sn-Sb-Te is a material having a higher crystallization rate than conventional high-speed crystallization materials such as Ge-Sb-Te (for example, refer to Japanese Patent No. 2584741). [0004] In order to realize the so-called 4.7GB large-capacity information recording medium, i) the film thi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B41M5/26G11B7/24G11B7/24035G11B7/24038G11B7/243G11B7/2433G11B7/2437
CPCG11B7/266H01L45/1233G11B2007/2431G11B7/00454G11B2007/24312H01L45/144H01L45/04H01L45/06H01L45/1625G11B7/2433G11B9/04G11B2007/24314G11B7/24038G11B2007/24316Y10T428/21H10N70/231H10N70/826H10N70/8828H10N70/026G11B7/241B41M5/26
Inventor 儿岛理惠山田升
Owner PANASONIC CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com