JPS61204841A - Optical recording medium - Google Patents
Optical recording mediumInfo
- Publication number
- JPS61204841A JPS61204841A JP60045154A JP4515485A JPS61204841A JP S61204841 A JPS61204841 A JP S61204841A JP 60045154 A JP60045154 A JP 60045154A JP 4515485 A JP4515485 A JP 4515485A JP S61204841 A JPS61204841 A JP S61204841A
- Authority
- JP
- Japan
- Prior art keywords
- film
- recording
- recording medium
- optical recording
- polycrystalline
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Thermal Transfer Or Thermal Recording In General (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
本発明は光学的な記録媒体に係り、特Ｃニレーザ光等の
光及び熱エネルギーを用いて情報を高密度に記録し、且
つ再生可能な光学記録媒体ｇユ関する。DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention relates to an optical recording medium, in which information can be recorded at high density using light such as special C laser light and thermal energy, and can be reproduced. It relates to optical recording media.
（ロ）従来の技術
レーザ光等のエネルギービームを照射して、基板上の金
属等の薄膜を溶融あるいは蒸発させ、ピットな形成する
方式の記録材料としては感度が高く、基板上の記録層の
膜厚が均一であり化学、物理的Ｃ二も安定で長期にわた
って記録再生ができるものでなければならない。(b) Conventional technology A recording material that uses an energy beam such as a laser beam to melt or evaporate a thin film of metal or the like on a substrate to form pits has high sensitivity; It must have a uniform film thickness, be stable in chemical and physical C2, and be capable of recording and reproducing over a long period of time.
例エバ、日経エレクトロニクス１９８２年１月４日号第
８６頁以下、「画像ファイルＣ二使われ出した光ディス
ク・メモリ」なる記事等【−開示され、ている如く、現
在この方式の記録材料としてはテルル（Ｔｅ）が一般的
に用いられている。Ｔｅは熱伝導率が低く、光吸収係数
が大きく、低融点であるので良好な形状のピット（孔）
が形成でき、従って感度の良い記録膜が得られるが、空
気中の水分（−よって容易Ｃ二酸化され、光学的に透明
な二酸化テルル（Ｔｅ０２）ｃ変化するため信号が再生
できなくなり、長期間の情報の記録保存が難しい。すな
わち記録寿命が短いという欠点を有している。For example, Eva, Nikkei Electronics, January 4, 1982 issue, page 86 et seq., article entitled "Image File C2 - Optical Disk Memory in Use", etc. Tellurium (Te) is commonly used. Te has a low thermal conductivity, a large optical absorption coefficient, and a low melting point, so it forms pits with good shapes.
can be formed, and therefore a recording film with good sensitivity can be obtained, but the moisture in the air (- therefore easily oxidizes and changes to optically transparent tellurium dioxide (Te02), making it impossible to reproduce the signal and causing long-term problems. It is difficult to record and store information, which means that it has a short recording life.
そこで、本出願人は特願昭５９−４１１６７号に；おい
て、上述の如く記録−命が短いという欠点を抑制し、長
期間にわたって安定した情報の記録及び再生を可能にす
る改良された光学記録媒体とシテ、記録膜＋ｋ（Ｔｅ１
（１００−Ｘ−ｙ−Ｚ）’Ｔｉｘ−Ａｇｙ−８ｅｚ、た
だしＸ＋ｙ＋Ｚ＜１５ ；ｘｓ Ｖ ｓ ｚはモル％〕
からなる非晶質膜（：て形成することを出願している。Therefore, in Japanese Patent Application No. 59-41167, the present applicant has developed an improved optical system that suppresses the disadvantage of short recording life as described above and enables stable recording and reproduction of information over a long period of time. Recording medium and shite, recording film +k (Te1
(100-X-y-Z)'Tix-Agy-8ez, where X+y+Z<15; xs V s z is mol%]
We have filed an application to form an amorphous film consisting of:
（ハ）発明が解決しようとする問題点
本出願人はその後の追実験により、上記記録膜が非晶質
膜【二限定されないことを見いだした。(c) Problems to be Solved by the Invention Through subsequent additional experiments, the applicant found that the recording film is not limited to an amorphous film.
本発明の目的は、長寿命及び高性能の光学記録媒体を提
供することにある。An object of the present invention is to provide an optical recording medium with long life and high performance.
（ロ）問題点を解決するための手段
本発明は、光学記録媒体の記録膜を（Ｔｅ（１００−ｘ
−ｙ−ｚ）−Ｔｉｘ−Ａｇｙ−８ｅｚ。(b) Means for solving the problems The present invention provides a recording film of an optical recording medium (Te(100-x
-y-z)-Tix-Agy-8ez.
ただしｘ＋ｙ＋ｚ＜１５ ； ｘ％ｙ、Ｚはモル％〕か
らなる多結晶膜にて形成したものである。However, it is formed from a polycrystalline film consisting of x+y+z<15; x%y, Z is mol%].
（ホ）作 用
Ｔｅ（１００−ｘ−ｙ−ｚ）ｏＴｉｘ−Ａｇｙ−８ｅｚ
（ただし、 ｘ ＋ ｙ ＋ ｚ ＜ １５ ； ｘ、
１ｙ 。(E) Effect Te(100-x-y-z)oTix-Agy-8ez
(However, x + y + z <15; x,
1y.
２はモル％〕からなる膜Ｃ二おいて、非晶質状態と多結
晶状態とを比較すると、前者に比して後者の万が少ない
エネルギーで情報の記録を行なうことができ、高Ｓ／Ｎ
比を得ることができる。Comparing the amorphous state and the polycrystalline state of the film C2, which consists of mol%], information can be recorded with less energy in the latter than in the former, and information can be recorded with a high S/ N
You can get the ratio.
（へ）実 施 例
第１図は本発明の一実施例を示す断面斜視図である。記
録膜（１）？内面ｇ二形成した透明基板（２）と保護板
（３）とが、２つのリング状スペーサ（４１（５）！二
より一定の間隔を空けて固定されている。なお、保護板
（３）を記録膜を形成した透明基板に変えること【：よ
って両面記録が可能となる。(F) Embodiment FIG. 1 is a cross-sectional perspective view showing an embodiment of the present invention. Recording film (1)? The transparent substrate (2) and the protection plate (3) formed on the inner surface g2 are fixed at a constant distance from two ring-shaped spacers (41(5)!2.The protection plate (3) By changing the substrate to a transparent substrate on which a recording film is formed, double-sided recording becomes possible.
透明基板（２）は、アクリル樹脂、ポリカーボネイト樹
脂、ポリメチルメタクリレート樹脂もしくはガラス等か
らなる。The transparent substrate (2) is made of acrylic resin, polycarbonate resin, polymethyl methacrylate resin, glass, or the like.
記録膜（１）は、本発明の特徴であり、Ｔｅ（１００−
ｘ−ｙ−ｚ）−Ｔｉｘ＠Ａｇｙ−３ｅｚ（ただし、ｘ十
ｙ＋ｚ＜１５ ； ｘ、ｙ、ｚはモル％）からなる多結
晶膜にて形成されでいる。The recording film (1) is a feature of the present invention and is made of Te(100-
x-y-z)-Tix@Agy-3ez (where xy+z<15; x, y, and z are mol%).
以下、本発明の一実施例「二ついて説明する。Hereinafter, two embodiments of the present invention will be explained.
記録膜（１）はＰＭＭＡ（ポリメチルメタクリレート〕
樹脂からなる基板上１：１． ＲＦスパッタリング法を
用いて非晶質薄膜を形成し、これを６０”Ｃの雰囲気で
１０時間アニールすることにより多結晶薄膜として形成
される。なお、上記ＲＦスパッタリング法Ｃ二用いられ
るターゲットは、Ｔｅのターゲット上（二Ｔｉ、Ａｇ及
びＳｅのタブレットを設置した複合ターゲットである。Recording film (1) is PMMA (polymethyl methacrylate)
On a substrate made of resin 1:1. A polycrystalline thin film is formed by forming an amorphous thin film using the RF sputtering method and annealing it in an atmosphere of 60"C for 10 hours.The target used in the above RF sputtering method C2 is Te. It is a composite target with two Ti, Ag and Se tablets installed on the target.
記録膜（１）の模写は３００〜５００Ａの範囲内【−設
定される。The reproduction of the recording film (1) is set within the range of 300 to 500A.
第２図乃至第４図は、Ｔｅ ５ｅＴｉ ｚＡｇｚｓｅ７
の組成からなる非晶質膜及び多結晶膜の寿命、所望品位
の録再特性を満たすために半導体レーザＬＤに要求され
るパワー及び再生信号のＣ／Ｈの各特性を示している。Figures 2 to 4 show Te 5eTi zAgzse7
It shows the life span of an amorphous film and a polycrystalline film having the composition, the power required of a semiconductor laser LD to satisfy recording/reproducing characteristics of desired quality, and the C/H characteristics of a reproduction signal.
第２図Ｃユ示前記録膜の寿命は、温度６０℃湿度９０％
の雰囲気中での加速試験の結果であり、上記雰囲気中に
おける放置時間〔日〕対透過率（相対値）の特性を示し
ている。Figure 2: The life of the recording film before displaying C is at a temperature of 60°C and a humidity of 90%.
These are the results of an accelerated test in the above atmosphere, and show the characteristics of the transmittance (relative value) versus the standing time [days] in the above atmosphere.
同図から明らかなようＣユ、本発明の多結晶膜は、非晶
質膜とほとんど同一の長寿命を１する。As is clear from the figure, the polycrystalline film of the present invention has almost the same long life as an amorphous film.
第３図は、光学記録媒体（ディスク）の回転数６００ｒ
ｌ）ｍ、記録周波数ＩＭＨ２（７）条件で、所望品位の
録再特性を満たすために半導体１／−ザＬＤに要求され
るパワー（ディスク面上）とダイスフ半径との関係を示
す。Figure 3 shows the rotational speed of the optical recording medium (disc) at 600 r.
1) The relationship between the power (on the disk surface) required for the semiconductor 1/-the LD and the die radius in order to satisfy the recording/reproducing characteristics of the desired quality under the conditions of m and recording frequency IMH2 (7) is shown.
また、第４図は、ディスクの回転数６ｏｏｒｐｍ、ディ
スク半径６０１１Ｍの位置ｆ；おけるＣ／Ｎｉ測定した
結果を示す。Further, FIG. 4 shows the results of C/Ni measurement at a position f; with a disk rotation speed of 6 oorpm and a disk radius of 6011M.
なお、両図において、実線Ａは多結晶膜、また実線Ｂは
非晶質膜の特性を示している。In both figures, solid line A shows the characteristics of the polycrystalline film, and solid line B shows the characteristics of the amorphous film.
両図から明らかなよう１：、本発明１ユよる多結晶膜は
、非晶質膜【−比して少ないパワーで記録を行なうこと
ができると共に高Ｃ／Ｎを得ることができる。As is clear from both figures, the polycrystalline film according to the present invention can perform recording with less power than an amorphous film and can obtain a high C/N.
（ト）発明の効果
本発明■二よれば、長寿命の特性を維持したままで、よ
り高性能な光学記録媒体を提供することができる。(G) Effects of the Invention According to the present invention (1)-2, it is possible to provide an optical recording medium with higher performance while maintaining long-life characteristics.
図は本発明の実施例に係り、第１図は光学記録媒体の断
面斜視図、第２図は相対的透過率の加速試験結果を示す
特性図、第３図はディスク半径対しＤパワーの関係を示
す特性図、第４図は再生信号のＣ／Ｎの特性を示す特性
図である。
（１）・・・記録膜、（２）・・・透明基板。The figures relate to embodiments of the present invention, in which Figure 1 is a cross-sectional perspective view of an optical recording medium, Figure 2 is a characteristic diagram showing the results of an accelerated test of relative transmittance, and Figure 3 is the relationship between D power and disk radius. FIG. 4 is a characteristic diagram showing the C/N characteristics of the reproduced signal. (1) Recording film, (2) Transparent substrate.
Claims (1)
形式の光学記録媒体において、基板に〔Ｔｅ（１００−
ｘ−ｙ−ｚ）・Ｔｉｘ・Ａｇｙ、Ｓｅｚ、ただしｘ＋ｙ
＋ｚ＜１５；ｘ、ｙ、ｚはモル％を示す〕からなる多結
晶膜を形成したことを特徴とする光学記録媒体。(1) In an optical recording medium in which information is recorded by irradiation with an energy beam, a substrate is coated with [Te(100-
x-y-z)・Tix・Agy, Sez, however x+y
+z<15; x, y, z represent mol%] An optical recording medium characterized by forming a polycrystalline film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60045154A JPS61204841A (en) | 1985-03-07 | 1985-03-07 | Optical recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60045154A JPS61204841A (en) | 1985-03-07 | 1985-03-07 | Optical recording medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61204841A true JPS61204841A (en) | 1986-09-10 |
| JPH0361257B2 JPH0361257B2 (en) | 1991-09-19 |
Family
ID=12711347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60045154A Granted JPS61204841A (en) | 1985-03-07 | 1985-03-07 | Optical recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61204841A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63109087A (en) * | 1986-10-27 | 1988-05-13 | Daicel Chem Ind Ltd | Optical recording medium for direct-read-after-write type optical memory |
| EP0285112A2 (en) * | 1987-03-31 | 1988-10-05 | E.I. Du Pont De Nemours And Company | Optical recording element |
-
1985
- 1985-03-07 JP JP60045154A patent/JPS61204841A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63109087A (en) * | 1986-10-27 | 1988-05-13 | Daicel Chem Ind Ltd | Optical recording medium for direct-read-after-write type optical memory |
| EP0285112A2 (en) * | 1987-03-31 | 1988-10-05 | E.I. Du Pont De Nemours And Company | Optical recording element |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0361257B2 (en) | 1991-09-19 |
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