JPH01159843A - Optical disk - Google Patents
Optical diskInfo
- Publication number
- JPH01159843A JPH01159843A JP62319495A JP31949587A JPH01159843A JP H01159843 A JPH01159843 A JP H01159843A JP 62319495 A JP62319495 A JP 62319495A JP 31949587 A JP31949587 A JP 31949587A JP H01159843 A JPH01159843 A JP H01159843A
- Authority
- JP
- Japan
- Prior art keywords
- film
- optical disc
- recording
- recording film
- resin
- 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 26
- 239000011347 resin Substances 0.000 claims abstract description 18
- 229920005989 resin Polymers 0.000 claims abstract description 18
- 239000000758 substrate Substances 0.000 claims abstract description 15
- 230000001681 protective effect Effects 0.000 claims abstract description 14
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000011521 glass Substances 0.000 claims abstract description 6
- 239000010936 titanium Substances 0.000 claims description 4
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 4
- 238000002834 transmittance Methods 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 229910052809 inorganic oxide Inorganic materials 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical group [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 claims 1
- ANRHNWWPFJCPAZ-UHFFFAOYSA-M thionine Chemical compound [Cl-].C1=CC(N)=CC2=[S+]C3=CC(N)=CC=C3N=C21 ANRHNWWPFJCPAZ-UHFFFAOYSA-M 0.000 abstract description 4
- 239000004417 polycarbonate Substances 0.000 abstract description 3
- 229920000515 polycarbonate Polymers 0.000 abstract description 2
- 238000003848 UV Light-Curing Methods 0.000 abstract 1
- 238000002310 reflectometry Methods 0.000 abstract 1
- 239000010408 film Substances 0.000 description 42
- 239000000975 dye Substances 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 239000012528 membrane Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000000936 intestine Anatomy 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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、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 the Invention 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Δ。BACKGROUND OF THE INVENTION Generally, optical discs are considered promising as information media due to 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ＰＣＭ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。In this method, a PCM-converted digital signal is recorded in the form of a pit row on a resin substrate, and is reproduced by a semiconductor laser beam.
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、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。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, and 4
5 is a reflective film formed on the surface thereof, 5 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、あらかじめ情報がピット列状のディジタル信号
にて形成され、それを半導体レーザ光によシ読み取シ再
生される再生専用の光ディスクが主流であった。Conventionally, the mainstream has been a read-only optical disk in which information is formed in advance as a digital signal in the form of a pit string, which is read and reproduced by a semiconductor laser beam.
また近年、情報を記録し再生する追記型光ディスクの研
究がなされている。その一般的な構造を第２図に示す。Furthermore, in recent years, research has been conducted on write-once optical discs for recording and reproducing information. Its general structure is shown in FIG.
第２図において、樹脂製またはガラス製平板基板８上に
記録膜９を形成し、その上に保護膜１ｏを形成し構成さ
れるものであシ、反射膜は存在しない。In FIG. 2, a recording film 9 is formed on a flat substrate 8 made of resin or glass, and a protective film 1o is formed thereon, and there is no reflective film.
発明が解決しようとする問題点
しかしながら上記のような構成では、一般に、記録膜自
体の光に対する透過率または反射率等の光学的変化が小
さいため、Ｃ／Ｎが小さくて信頼性に欠ける等の問題点
を有していた。Problems to be Solved by the Invention However, in the above configuration, optical changes such as transmittance or reflectance of the recording film itself to light are small, so C/N is small and reliability is low. It had some problems.
本発明は上記問題点に鑑み、安定性、信頼性が高い光デ
ィスクを量産性良く提供するものである。In view of the above problems, the present invention provides an optical disc with high stability and reliability that can be easily mass-produced.
問題点を解決するための手段
上記問題点を解決するために本発明は、樹脂製またはガ
ラス製平板基板上に記録膜を形成し、上記記録膜上に反
射膜を形成し、上記反射膜上に保護膜を形成し構成され
るものである。Means for Solving the Problems In order to solve the above problems, the present invention forms a recording film on a flat substrate made of resin or glass, forms a reflective film on the recording film, and forms a reflective film on the reflective film. It is constructed by forming a protective film on the surface.
作用
本発明は上記した構成によって、樹脂製またはガラス製
平板基板上に記録膜を形成し、上記記録膜上に反射膜を
形成し、上記反射膜上に保護膜を形成し設けることによ
シ、コントラストの小さな記録膜の光学的変化を反射率
の高い反射膜でカバーすることにより安定性、信頼性の
高い光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 structure, in which a recording film is formed on a flat substrate made of resin or glass, a reflective film is formed on the recording film, and a protective film is formed on the reflective film. By covering optical changes in a recording film with a low contrast with a reflective film with a high reflectance, it is possible to provide a highly stable and reliable optical disc that can be easily mass-produced.
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す断面の要部拡大図で
ある。１１はポリカーボネー）（ＰＣ）製の平板樹脂基
板、１２は上記平板樹脂基板１１上に設けられた、約１
ｏｏＯ人のシアニン色素の記録膜であり、樹脂基板１１
上にスピナー法によシ塗布されている。１３は上記記録
膜１２上に設けられた、約１０００人のアルミニウム（
ム／）反射膜である。１４はアルミニウム（Ａｌ）反射
膜１３上に設けられた約１０μｍの紫外線硬化型樹脂の
保護膜である。FIG. 1 is an enlarged cross-sectional view of essential parts of an optical disc of the present invention. 11 is a flat resin substrate made of polycarbonate (PC); 12 is about 1 provided on the flat resin substrate 11;
ooO Recording film of human cyanine dye, resin substrate 11
It is applied on top using a spinner method. 13 is about 1000 aluminum (
It is a reflective film. Reference numeral 14 denotes a protective film made of an ultraviolet curable resin with a thickness of about 10 μm provided on the aluminum (Al) reflective film 13 .
記録膜としては、シアニン色素の他、書きこみ用のレー
ザー光を照射することにより透過率など光学的変化する
ことを特徴とする、相変態型のテ＃Ａ／（Ｔ６）、テＡ
／、Ｉｔ／低級酸化物（τｅＯｘ ； Ｘ＜２ ）など
も有効である。In addition to cyanine dyes, the recording film uses phase-transformation type Te#A/(T6) and TeA, which are characterized by optical changes such as transmittance when irradiated with laser light for writing.
/, It/lower oxides (τeOx; X<2) are also effective.
反射膜としては、アルミニウム（Ａｌ）の他、チタン（
Ｔｉ）などの８０チ以上の反射率を有する金属薄膜も有
効である。In addition to aluminum (Al), titanium (
A metal thin film having a reflectance of 80 cm or more, such as Ti), is also effective.
保護膜としては、紫外線硬化型樹脂の他、酸化ケイ素（
８ｉ０ ）、酸化チタン（ＴｉＯ）などの無機酸化物に
て構成されることも有効である。As a protective film, in addition to ultraviolet curable resin, silicon oxide (
It is also effective to use an inorganic oxide such as titanium oxide (TiO) or titanium oxide (TiO).
発明の効果
以上のように本発明は、樹脂製またはガラス製平板基板
上に記録膜を形成し、上記記録膜上に反射膜を形成し、
上記反射膜上に保護膜を形成し構成されることによシア
ニン色素の記録膜自体の光に対する特性はよくないが、
アルミニウム（Ａｌ）反射膜を設けることによシ、光学
的なコントラストが向上するためにＣ／Ｎが大きくなシ
、信頼性。Effects of the Invention As described above, the present invention forms a recording film on a resin or glass flat substrate, forms a reflective film on the recording film,
By forming a protective film on the above-mentioned reflective film, the cyanine dye recording film itself has poor light characteristics.
Providing an aluminum (Al) reflective film improves optical contrast, increases C/N, and improves reliability.
安定性の高い光ディスクを提供することができる。A highly stable optical disc can be provided.
第１図は本発明の光ディスクを示す要部断面拡大図、第
２図は従来の光ディスクを示す要部断面拡大図、第３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。
１１・・・・・・平板樹脂基板、１２・・・・・・記録
膜、１３・・・・反射膜、１４・・・・・保護膜。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名１１
−−一平板衝腸基板
１２−−一吉己ｇ膜
１３−反村膜
第２図
第３図Fig. 1 is an enlarged cross-sectional view of the main part showing the optical disc of the present invention, Fig. 2 is an enlarged cross-sectional view of the main part showing the conventional optical disc, and Fig. 3 (a), (b), and (C) are a type of optical disc. They are a plan view, a sectional view, and an enlarged view of essential parts of a certain compact disc. 11... Flat resin substrate, 12... Recording film, 13... Reflective film, 14... Protective film. Name of agent: Patent attorney Toshio Nakao and 1 other person11
--One flat plate intestine substrate 12--Kichiyoshi G membrane 13-Somura membrane Fig. 2 Fig. 3
Claims (4)
し、上記記録膜上に反射膜を形成し、上記反射膜上に保
護膜を形成し構成されることを特徴とする光ディスク。(1) An optical disc characterized in that a recording film is formed on a resin or glass flat substrate, a reflective film is formed on the recording film, and a protective film is formed on the reflective film.
により透過率が変化することを特徴とする特許請求の範
囲第１項記載の光ディスク。(2) The optical disc according to claim 1, wherein the recording film has a transmittance that changes by being irradiated with a laser beam for writing.
）などの金属薄膜であり、８０％以上の反射率を有する
ことを特徴とする特許請求の範囲第１項記載の光ディス
ク。(3) The reflective film is made of aluminum (Al), titanium (Ti).
2. The optical disc according to claim 1, wherein the optical disc is a thin metal film such as ) and has a reflectance of 80% or more.
ＴｉＯ）などの無機酸化物、または紫外線硬化型樹脂な
どの有機物膜で構成されることを特徴とする特許請求の
範囲第１項記載の光ディスク。(4) The protective film is silicon oxide (SiO), titanium oxide (
2. The optical disc according to claim 1, wherein the optical disc is composed of an inorganic oxide film such as TiO) or an organic film such as an ultraviolet curable resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62319495A JPH01159843A (en) | 1987-12-17 | 1987-12-17 | Optical disk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62319495A JPH01159843A (en) | 1987-12-17 | 1987-12-17 | Optical disk |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01159843A true JPH01159843A (en) | 1989-06-22 |
Family
ID=18110856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62319495A Pending JPH01159843A (en) | 1987-12-17 | 1987-12-17 | Optical disk |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01159843A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0518213A2 (en) * | 1991-06-14 | 1992-12-16 | MITSUI TOATSU CHEMICALS, Inc. | Optical recording medium |
| JP2006281751A (en) * | 2004-04-28 | 2006-10-19 | Sony Corp | Write-once optical recording medium |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58183296A (en) * | 1982-04-22 | 1983-10-26 | Tdk Corp | Optical recording medium |
| JPS62226445A (en) * | 1986-03-28 | 1987-10-05 | Toshiba Corp | Optical recording medium |
-
1987
- 1987-12-17 JP JP62319495A patent/JPH01159843A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58183296A (en) * | 1982-04-22 | 1983-10-26 | Tdk Corp | Optical recording medium |
| JPS62226445A (en) * | 1986-03-28 | 1987-10-05 | Toshiba Corp | Optical recording medium |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0518213A2 (en) * | 1991-06-14 | 1992-12-16 | MITSUI TOATSU CHEMICALS, Inc. | Optical recording medium |
| EP0518213A3 (en) * | 1991-06-14 | 1993-05-05 | Mitsui Toatsu Chemicals, Inc. | Optical recording medium |
| US5344682A (en) * | 1991-06-14 | 1994-09-06 | Mitsui Toatsu Chemicals, Inc. | Optical recording medium |
| JP2006281751A (en) * | 2004-04-28 | 2006-10-19 | Sony Corp | Write-once optical recording medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RD04 | Notification of resignation of power of attorney |
Effective date: 20040310 Free format text: JAPANESE INTERMEDIATE CODE: A7424 |