JPH027241A - Optical disk - Google Patents
Optical diskInfo
- Publication number
- JPH027241A JPH027241A JP63158561A JP15856188A JPH027241A JP H027241 A JPH027241 A JP H027241A JP 63158561 A JP63158561 A JP 63158561A JP 15856188 A JP15856188 A JP 15856188A JP H027241 A JPH027241 A JP H027241A
- Authority
- JP
- Japan
- Prior art keywords
- resin substrate
- thin film
- reflective film
- film
- disk
- 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.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 title claims description 14
- 239000010936 titanium Substances 0.000 claims abstract description 23
- 239000010408 film Substances 0.000 claims abstract description 22
- 239000011347 resin Substances 0.000 claims abstract description 20
- 229920005989 resin Polymers 0.000 claims abstract description 20
- 239000000758 substrate Substances 0.000 claims abstract description 19
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 13
- 239000010409 thin film Substances 0.000 claims abstract description 12
- 238000004544 sputter deposition Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 101100287595 Caenorhabditis elegans kin-2 gene Proteins 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
Landscapes
- Optical Record Carriers And Manufacture Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明はビデオディスク、ディジタルオーディオデイヌ
ク（例えばコンパクトディスク）、静止画、文書ファイ
ルなどのディジタル信号を記録、再生する光ディスクに
関するものである。DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to an optical disc for recording and reproducing digital signals such as video discs, digital audio discs (eg, compact discs), still images, and document files.
従来の技術
一般に、光デイヌクはその情報密度が大きいこと、ノイ
ズが少ないことなどから情報媒体として有望視され、ビ
デオディスク、ディジタルオーディオディスクとして商
品化されている。2. Description of the Related Art In general, optical discs are considered promising as information media because of their high information density and low noise, and have been commercialized as video discs and digital audio discs.
第４図に従来の一般的なディジタルオーディオディスク
であるコンパクトディスクの概要を示す。FIG. 4 shows an overview of a compact disc, which is a conventional general digital audio disc.
これはＰＣ１ｖ！Ｉ変換されたディジタル信号が樹脂基
板にピット列状に記録され、半導体レーザ光により再生
されるものである。第４図において、１はディスク、２
は樹脂基板、３は樹脂基板２に刻まれたピット列状のデ
ィジタル信号部、４はその表面に形成された反射膜、５
は反射膜４に設けられた保護膜、６は保護膜６に設けら
れたレーベル印刷膜、７は再生用の半導体レーザ光であ
る。This is PC1v! The I-converted digital signal is recorded on a resin substrate in the form of a pit row, and is reproduced by a semiconductor laser beam. In Fig. 4, 1 is a disk, 2
1 is a resin substrate, 3 is a digital signal section in the form of a pit row carved on the resin substrate 2, 4 is a reflective film formed on the surface of the same, and 5 is a resin substrate.
is a protective film provided on the reflective film 4, 6 is a label printing film provided on the protective film 6, and 7 is a semiconductor laser beam for reproduction.
反射膜４はディジタル信号を再生するため、保護膜５は
反射膜を保護するため、レーベル印刷膜６はディスクを
識別するために各々必要なものである。The reflective film 4 is necessary for reproducing digital signals, the protective film 5 is necessary for protecting the reflective film, and the label printing film 6 is necessary for identifying the disc.
従来は、反射膜としてアルミニウム薄膜が、反射率を十
分満足すること、反射膜を形成する薄膜形成装置の設備
費用が安くつくことなどによシ、真空蒸着などの方法で
樹脂基板上に形成されていた。Conventionally, aluminum thin films have been formed on resin substrates by methods such as vacuum evaporation because they have sufficient reflectance and the equipment cost for the thin film forming equipment that forms the reflective films is low. was.
発明が解決しようとする課題
しかしながら上記のような構成では、一般にアルミニウ
ムは非常に酸化され易い材料であシ、しかも保護膜とし
て紫外線硬化型樹脂が数μｍ設けられているだけである
ため、空気中の水分を吸収し、容易にアルミニウム反射
膜が酸化されるなどの課題を有していた。Problems to be Solved by the Invention However, with the above configuration, aluminum is generally a material that is very easily oxidized, and furthermore, only a few micrometers of ultraviolet curable resin is provided as a protective film, so it cannot be exposed to air. The problem was that the aluminum reflective film was easily oxidized due to the absorption of moisture.
本発明は上記課題に鑑み、信頼性が高く、経時変化の少
ないディスクを量産性良く提供するものである。In view of the above-mentioned problems, the present invention provides a disk that is highly reliable and exhibits little deterioration over time, which can be easily mass-produced.
課題を解決するだめの手段
上記課題を解決するために本発明は、ディジタル信号が
形成された樹脂基板上に、反射膜として、厚さ５００〜
１０００人のチタニウム（Ｔｉ）薄膜を設けた光ディス
ク及びその製造方法を示すものである。Means for Solving the Problems In order to solve the above problems, the present invention provides a reflective film with a thickness of 500 to
This figure shows an optical disk provided with a 1,000-layer titanium (Ti) thin film and a method for manufacturing the same.
作 用
本発明は上記した構成によって、ディジタル信号が形成
された樹脂基板上に、反射膜として、厚さ６ｏＯ〜１０
０ｏ人のチタニウム（Ｔｉ）薄［−設けることによシ信
頼性が高く、経時変化の少ないディスクを量産性良く提
供するものである。Function The present invention has the above-described configuration, and a reflective film is formed on the resin substrate on which the digital signal is formed, with a thickness of 600 to 1000.
By providing a thin layer of titanium (Ti), it is possible to provide a disk with high reliability and little deterioration over time, which can be easily mass-produced.
実施例
以下本発明の一実施例の光ディスクおよびその製造方法
について図面を参照しながら説明する。EXAMPLE Hereinafter, an optical disc and a method for manufacturing the same according to an embodiment of the present invention will be described with reference to the drawings.
第１図は本発明の光ディスクを示す断面の要部拡大図で
ある。２はピント列状のディジタル信号３が形成された
樹脂基板、８は上記樹脂基板２上に設けられた厚さ５ｏ
○〜１ｏｏＯ人のチタニウム（Ｔｉ ）薄膜であシ、樹
脂基板２にスパッタリング法によシ蒸着されている。FIG. 1 is an enlarged cross-sectional view of essential parts of an optical disc of the present invention. 2 is a resin substrate on which a digital signal 3 in the form of a focus line is formed; 8 is a resin substrate with a thickness of 5o provided on the resin substrate 2;
A titanium (Ti) thin film having a thickness of .about.100 mm is deposited on the resin substrate 2 by sputtering.
第２図は本発明の光ディスクの製造方法を示す製造装置
の断面図である。９はスパッタ装置を示し１０，１１．
１２は真空室であり、各々の真空室には真空排気装置１
３が設けられている。FIG. 2 is a cross-sectional view of a manufacturing apparatus showing the method of manufacturing an optical disc of the present invention. 9 indicates a sputtering device, 10, 11.
12 is a vacuum chamber, and each vacuum chamber is equipped with a vacuum exhaust device 1.
3 is provided.
搬送用トレイ１４に設置された樹Ｕｊ基板２は、上記真
空室を通過する際、１１の真空室に設けられたチタニウ
ム（Ｔｉ）ターゲット１５によりスパッタされ、樹脂基
板２上に厚さ５００〜ｉ ｏｏｏ人のチタニウム（Ｔｉ
）薄膜が形成される。When the resin Uj substrate 2 placed on the transfer tray 14 passes through the vacuum chamber, it is sputtered by a titanium (Ti) target 15 provided in the vacuum chamber 11, and is sputtered onto the resin substrate 2 to a thickness of 500 to 100 μm. ooo titanium (Ti)
) A thin film is formed.
以上のように本発明は、ディジタル信号が形成された樹
脂基板上に、反射膜として、厚さ５００〜１０００人の
チタニウム（Ｔｉ）薄膜を設けた光ディスクは、チタニ
ウム（Ｔｉ）自身がアルミニウム（Ａｌ）に比較してキ
ン２゛率が大き７ため・機械的な強度が強いことが分か
る。As described above, the present invention provides an optical disk in which a titanium (Ti) thin film with a thickness of 500 to 1000 people is provided as a reflective film on a resin substrate on which a digital signal is formed. ) It can be seen that the mechanical strength is strong because the kin 2 ratio is large 7 compared to the previous model.
さらに、第３図にディスクの欠陥を程度を示すエラーフ
ラッグ数の、６０℃、９５％の環境における経時変化を
示す。第３図に示されるように、チタニウム（Ｔｉ ）
反射膜を有するディスクは従来のアルミニウムＣＡＲ）
反射膜を有するディスクに比べて、エラーフラッグ数の
増加が少なく優れた経時変化特性を示すことが分かる。Further, FIG. 3 shows the change over time in the number of error flags, which indicate the degree of disk defects, in an environment of 60° C. and 95%. As shown in Figure 3, titanium (Ti)
The disk with a reflective film is a conventional aluminum CAR)
It can be seen that the increase in the number of error flags is small and the disc exhibits excellent aging characteristics compared to a disc having a reflective film.
発明の効果
以上のように本発明はディジタル信号が形成された樹脂
基板上に、反射膜として厚さ５００〜１ＯｏＯ人のチタ
ニウム（Ｔｉ ）薄膜を設けた光ディスクは信頼性が高
く、また、その製造装置が安くつくため安価に、大量に
信頼性の高い光ディスクを提供することができる。Effects of the Invention As described above, the present invention provides an optical disk in which a titanium (Ti) thin film with a thickness of 500 to 1 OoO as a reflective film is provided on a resin substrate on which digital signals are formed, and is highly reliable. Since the device is inexpensive, highly reliable optical discs can be provided in large quantities at low cost.
第１図は本発明の実施例の光ディスクを示す要部断面拡
大図、第２図は本発明の実施例の光ディスクの製造方法
を示す断面図、第３図はエラーフラッグ数の６０℃、９
５％の環境における経時変化特性、第４図（ａ） 、
（ｂ） 、 （Ｃ）は光ディスクの一種であるコンパク
トディスクの平面図、断面図、および要部拡大図である
。
２・・・・・・樹脂基板、３・・・・・・ディジタル信
号、８・・・・・・チタニウム（Ｔｉ ）薄膜、５・・
・・・・保護膜。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名第
篤
図
図
す
２−、ｆ１局Ｘ版
第
図
富
図
〆
／７７
に二き
鱒
閣FIG. 1 is an enlarged cross-sectional view of a main part showing an optical disk according to an embodiment of the present invention, FIG. 2 is a cross-sectional view showing a method for manufacturing an optical disk according to an embodiment of the present invention, and FIG.
Change characteristics over time in a 5% environment, Figure 4 (a),
(b) and (C) are a plan view, a cross-sectional view, and an enlarged view of essential parts of a compact disc, which is a type of optical disc. 2...Resin substrate, 3...Digital signal, 8...Titanium (Ti) thin film, 5...
····Protective film. Name of agent: Patent attorney Toshio Nakao and 1 other person Atsushi Zusu 2-, f1 station
Claims (1)
て、厚さ５００〜１０００Åのチタニウム（Ｔｉ）薄膜
を設けたことを特徴とする光ディスク。An optical disc characterized in that a titanium (Ti) thin film with a thickness of 500 to 1000 Å is provided as a reflective film on a resin substrate on which digital signals are formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63158561A JPH027241A (en) | 1988-06-27 | 1988-06-27 | Optical disk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63158561A JPH027241A (en) | 1988-06-27 | 1988-06-27 | Optical disk |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH027241A true JPH027241A (en) | 1990-01-11 |
Family
ID=15674393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63158561A Pending JPH027241A (en) | 1988-06-27 | 1988-06-27 | Optical disk |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH027241A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7043500B2 (en) | 2001-04-25 | 2006-05-09 | Board Of Regents, The University Of Texas Syxtem | Subtractive clustering for use in analysis of data |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60107746A (en) * | 1983-11-15 | 1985-06-13 | Sanyo Electric Co Ltd | Optical recording disk |
| JPS62139149A (en) * | 1985-12-11 | 1987-06-22 | Matsushita Electric Ind Co Ltd | Optical information recording and reproducing disk |
-
1988
- 1988-06-27 JP JP63158561A patent/JPH027241A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60107746A (en) * | 1983-11-15 | 1985-06-13 | Sanyo Electric Co Ltd | Optical recording disk |
| JPS62139149A (en) * | 1985-12-11 | 1987-06-22 | Matsushita Electric Ind Co Ltd | Optical information recording and reproducing disk |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7043500B2 (en) | 2001-04-25 | 2006-05-09 | Board Of Regents, The University Of Texas Syxtem | Subtractive clustering for use in analysis of data |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0644608A (en) | Optical information recording medium | |
| JPH027241A (en) | Optical disk | |
| JPH0254437A (en) | Optical disk | |
| JPH027249A (en) | Production of optical disk | |
| JP3577782B2 (en) | optical disk | |
| JPH0762249B2 (en) | Optical disk manufacturing equipment | |
| JPH02128333A (en) | Optical disk and production of optical disk | |
| JP2865775B2 (en) | Information recording materials | |
| JPS6262445A (en) | Optical information recording carriage | |
| JPH0461417B2 (en) | ||
| JPS6120237A (en) | Optical information recording medium | |
| JPH01159842A (en) | Optical disk | |
| JPH02165442A (en) | Optical disk and production thereof | |
| JPH07296449A (en) | Information storage medium | |
| JPH06223412A (en) | Information recording medium | |
| JPS62129955A (en) | Optical disk | |
| JPS61943A (en) | Light memory disk | |
| JPS58146043A (en) | Photomagnetic recording medium | |
| JPH01286135A (en) | Optical disk | |
| JPH02164585A (en) | Optical data recording medium | |
| JPH04105226A (en) | Optical information recording medium | |
| JPH03240589A (en) | Optical data recording medium | |
| JPS6129439A (en) | Photomagnetic recording medium | |
| JPH01159843A (en) | Optical disk | |
| JPH0471259B2 (en) |