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Organic compound for recording layer and optical recording medium including the same

An organic compound, optical recording technology, applied in nickel organic compounds, cobalt organic compounds, organic chemistry, etc., can solve the problems of high heat distribution, reduce the quality of writing signals, etc., achieve high absorption coefficient, retain compatibility, high heat The effect of stability

Inactive Publication Date: 2009-03-11
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In detail, when recording is carried out at high speed (high linear velocity) with a high writing power laser, the heat distribution of the recording layer in the irradiated area will rapidly become higher, resulting in more obvious thermal interference. or worse, thereby degrading the quality of the written signal

Method used

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  • Organic compound for recording layer and optical recording medium including the same
  • Organic compound for recording layer and optical recording medium including the same
  • Organic compound for recording layer and optical recording medium including the same

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Embodiment Construction

[0024] The general description above and the embodiments below are exemplary only to further explain the present invention.

[0025] The present invention provides an organic compound for use in a recording layer suitable for a high-speed recording operation of information using short-wavelength laser light and whose recorded information is reproducible. Organic compounds have the general formula:

[0026]

[0027] where A 1 、A 2 Each independently represents a substituted or unsubstituted cycloalkyl group, B represents a single bond, an oxygen atom, SO 2 or CQ 1 Q 2 , where Q 1 , Q 2 Each independently represents a hydrogen atom, C 1 ~C 18 Straight chain or branched alkyl, C 3 ~C 10 Cycloalkyl or phenyl; X 1 、X 2 Each independently represents an oxygen atom or C(CN) 2 ;X 3 、X 4 Each independently represents an oxygen atom, OH group or C(CN) with a negative charge 2 ;Y 1 , Y 2 Each independently represents an oxygen atom, a methylene group (CH 2 ), an alk...

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Abstract

A recording layer including a novel organic compound for a high density optical recording medium is provided. The information may be recorded on the recording layer at a 2x speed or higher speed with a relatively lower writing power so that heat distribution of the recording layer in the irradiated area is not likely to become steep both in time and space. The organic compound incorporated in the recording layer has the following general chemical structural formula (I).

Description

【Technical field】 [0001] The present invention relates to an optical recording medium, and more particularly to an organic compound for a recording layer for high-speed recording, and an optical recording medium comprising the organic compound. 【Background technique】 [0002] In recent years, the development of optical recording media using laser light has been fruitful. An example of an optical recording medium such as an optical disc generally has a thin recording layer formed on a disk-shaped substrate, which is irradiated with a focused laser light about 1 micron wide for information recording. After the laser energy is absorbed by the recording layer, the part of the recording layer material irradiated by the laser produces thermal changes such as decomposition or melting, and information is recorded in this way. When reading, the difference in reflectivity between the recording point (mark or pit) formed by the part that is irradiated by the laser and the part that ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D319/08C07D265/14C07D405/14C07D498/22C07D417/14C07F15/04C07F15/06G11B7/242G11B7/252
CPCC07D417/14C07D413/14C07D405/14C07D265/14C07D319/08Y10S428/913Y10S430/146
Inventor 李明家李安泽黄建喨郑宗达邱国基郑尊仁
Owner IND TECH RES INST
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