JPH0254437A - Optical disk - Google Patents
Optical diskInfo
- Publication number
- JPH0254437A JPH0254437A JP63205167A JP20516788A JPH0254437A JP H0254437 A JPH0254437 A JP H0254437A JP 63205167 A JP63205167 A JP 63205167A JP 20516788 A JP20516788 A JP 20516788A JP H0254437 A JPH0254437 A JP H0254437A
- Authority
- JP
- Japan
- Prior art keywords
- film
- aluminum
- titanium
- reflecting film
- resin substrate
- 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 abstract description 15
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 22
- 239000010936 titanium Substances 0.000 claims abstract description 18
- 239000011347 resin Substances 0.000 claims abstract description 15
- 229920005989 resin Polymers 0.000 claims abstract description 15
- 239000000758 substrate Substances 0.000 claims abstract description 14
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910001069 Ti alloy Inorganic materials 0.000 claims abstract description 11
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 11
- 239000010408 film Substances 0.000 claims description 29
- 239000010409 thin film Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 abstract description 2
- 238000004544 sputter deposition Methods 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000006866 deterioration Effects 0.000 abstract 1
- 230000008020 evaporation Effects 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910052796 boron Inorganic materials 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
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 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ィス
ク（例えばコンパクトディスク）、静止画９文書ファイ
ルなどのディジタル信号を記録。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention records digital signals such as video discs, digital audio discs (such as compact discs), still image 9 document files, etc.
再生する光ディスクに関するものである。This invention relates to an optical disc to be played back.
従来の技術
一般に、光ディス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３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. 3 shows an overview of a compact disc, which is a conventional general digital audio disc.
これはＰＯＭ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３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、６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。In this method, a POM-converted digital signal is recorded in the form of a pit row on a resin substrate, and is reproduced by a semiconductor laser beam. In FIG. 3, 1 is a disk, 2 is a resin substrate, 3 is a digital signal part in the form of a pit row carved on the resin substrate 2, 4 is a reflective film formed on the surface of the digital signal part, 6 is a reflective 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６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 6 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り、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 satisfy sufficient reflectance and the equipment costs for thin film forming equipment to form reflective films are low. .
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やすい材料であシ、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 structure, aluminum is generally a material that is easily oxidized, and since only a few μm of ultraviolet curable resin is provided as a protective film, it is difficult to oxidize in the 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
ないディスクを提供するものである。In view of the above problems, the present invention provides a disk that is highly reliable and shows little change over time.
課題を解決するための手段
上記課題を解決するだめに本発明は、ディジタル信号が
形成された樹脂基板上に反射膜であるア＃ ミ＝ ラム
（ｊｊ？）上に、厚さ６ｏＯ〜１ｏ００Ａのチタニウム
（Ｔｉ）またはチタニウム合金薄膜を、上記アルミニウ
ム（Ａｌ）反射膜を覆って形成したものである。Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a reflective film having a thickness of 600 to 1000 A on a resin substrate on which digital signals are formed. A titanium (Ti) or titanium alloy thin film is formed to cover the aluminum (Al) reflective film.
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であるアルミニウム（Ａｌ）
上に、厚さ５００〜１ｏｏｏ人のチタニウム（Ｔｉ）ま
たはチタニウム合金薄膜を上記アルミニウム（Ａｌ）反
射膜を覆って形成した光ディスクを提供するものである
。Function The present invention has the above-described structure, and a reflective film made of aluminum (Al) is formed on a resin substrate on which a digital signal is formed.
The present invention provides an optical disk in which a titanium (Ti) or titanium alloy thin film having a thickness of 500 to 100 mm is formed to cover the aluminum (Al) reflective film.
実施例
以下本発明の一実施例の光ディスクについて図面を参照
しながら説明する。EXAMPLE Hereinafter, an optical disc according to an example 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し、第１図ａは断面図
、第１図すは要部拡大図である。２はピット列状のディ
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上に設けられた反射膜であるアルミニウム（Ａｌ）で
あシ、９は厚さ５００〜１０００へのチタニウム（Ｔｉ
）またはチタニウム合金薄膜をスパッタリング法によシ
蒸着したものであり、上記アルミニウム（１）反射膜８
を覆って形成されている。FIG. 1 shows an optical disc of the present invention, FIG. 1a is a sectional view, and FIG. 1 is an enlarged view of the main part. Reference numeral 2 is a resin substrate on which a digital signal 3 in the form of a pit row is formed, 8 is an aluminum (Al) reflective film provided on the resin substrate 2, and 9 is a titanium (Al) film having a thickness of 500 to 1000. Ti
) or a titanium alloy thin film deposited by a sputtering method, and the aluminum (1) reflective film 8
It is formed by covering the
チタニウム合金薄膜としては、アルミニウム（Ａｌ）。Aluminum (Al) is used as the titanium alloy thin film.
バナジウＡ（Ｖ］、モリブデン（Ｍｏ） 、窒素（Ｎ）
、硼素（Ｂｌなどの元素からなるものが有効であった。Vanadium A (V), Molybdenum (Mo), Nitrogen (N)
, boron (Bl) and other elements were effective.
第２図にアルミニウム（Ａｌ）反射膜上に厚さＳＯＯ人
のチタニウム（Ｔｉ）薄膜の設けられた本発明の光ディ
スクの欠陥を程度を示すエラーフラッグ数の。FIG. 2 shows the number of error flags indicating the degree of defects in the optical disc of the present invention, which has a titanium (Ti) thin film with a thickness of SOO on an aluminum (Al) reflective film.
６０℃、９５％の環境における経時変化を示す。It shows changes over time in an environment of 60°C and 95%.
第２図に示されるように、本発明の光ディスクは従来の
アルミニウム（ムｅ）反射膜からなるものとくらべて、
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。As shown in FIG. 2, the optical disc of the present invention has the following characteristics compared to the conventional one made of an aluminum reflective film:
It can be seen that the number of error flags increases little and exhibits excellent aging characteristics.
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、反射膜であるアルミニウム（１）上に、厚
さ５００〜１ｏｏｏ人のチタニウム（Ｔ１）またはチタ
ニウム合金薄膜を形成したものである。Effects of the Invention As described above, the present invention forms a titanium (T1) or titanium alloy thin film with a thickness of 500 to 100 mm on a resin substrate on which a digital signal is formed and on aluminum (1), which is a reflective film. This is what I did.
以上の実施例から明らかなように、ディジタル信号が形
成された樹脂基板上に、反射膜であるアルミニウム（人
ｌ）上に、厚さ６ｏｏ〜１０００人のチタニウム（Ｔｉ
）またはチタニウム合金薄膜を、上記アルミニウム（Ａ
ｎ）反射膜を覆って形成したことを特徴とする光ディス
クは信頼性が高い光ディスクを提供することができる。As is clear from the above embodiments, a titanium (Ti) layer with a thickness of 600 to 1000 mm is coated on a resin substrate on which digital signals are formed, and on an aluminum film that is a reflective film.
) or titanium alloy thin film, the above aluminum (A
n) An optical disc characterized in that it is formed by covering a reflective film can provide a highly reliable optical disc.
第１図ａ、ｂは本発明の光ディスクを示す断面図および
要部拡大図、第２図はエラーフラッグ数の８０’Ｃ，９
５％の環境における経時変化特性図、第３図り、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・・・・・・アルミニウム（Ａｌり反射膜、９・
・・・・・チタニウム（Ｔｉ）またはチタニウム合金薄
膜。
代理人の氏名 弁理士 粟野 重 孝ほか１名第
図
ど−樹脂基藪
チクニクム春４４裏
第
図
鉾
閉
（ム）Figures 1a and b are a sectional view and an enlarged view of the main parts of the optical disc of the present invention, and Figure 2 shows the number of error flags of 80'C and 9.
Temporal change characteristic diagram in a 5% environment, third diagram, b, c
1 is a plan view, a 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...Aluminum (Al reflective film, 9...
...Titanium (Ti) or titanium alloy thin film. Name of agent: Patent attorney Shige Takashi Awano and one other person
Claims (1)
あるアルミニウム（Ａｌ）上に、厚さ５００〜１０００
Åのチタニウム（Ｔｉ）またはチタニウム合金薄膜を、
上記アルミニウム（Ａｌ）反射膜を覆って形成したこと
を特徴とする光ディスク。On the resin substrate on which the digital signal is formed, on the reflective film of aluminum (Al), a film with a thickness of 500 to 1000
Titanium (Ti) or titanium alloy thin film of Å,
An optical disc characterized in that it is formed to cover the aluminum (Al) reflective film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63205167A JPH0254437A (en) | 1988-08-18 | 1988-08-18 | Optical disk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63205167A JPH0254437A (en) | 1988-08-18 | 1988-08-18 | Optical disk |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0254437A true JPH0254437A (en) | 1990-02-23 |
Family
ID=16502532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63205167A Pending JPH0254437A (en) | 1988-08-18 | 1988-08-18 | Optical disk |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0254437A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5170526A (en) * | 1992-02-18 | 1992-12-15 | Milliken Research Corporation | Dust control mat with improved cleat |
| US5227214A (en) * | 1992-03-27 | 1993-07-13 | Milliken Research Corporation | Anti-creep mat |
-
1988
- 1988-08-18 JP JP63205167A patent/JPH0254437A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5170526A (en) * | 1992-02-18 | 1992-12-15 | Milliken Research Corporation | Dust control mat with improved cleat |
| US5227214A (en) * | 1992-03-27 | 1993-07-13 | Milliken Research Corporation | Anti-creep mat |
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