KR20010038619A - Method for making an optical disk - Google Patents

Method for making an optical disk Download PDF

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Publication number
KR20010038619A
KR20010038619A KR1019990046670A KR19990046670A KR20010038619A KR 20010038619 A KR20010038619 A KR 20010038619A KR 1019990046670 A KR1019990046670 A KR 1019990046670A KR 19990046670 A KR19990046670 A KR 19990046670A KR 20010038619 A KR20010038619 A KR 20010038619A
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KR
South Korea
Prior art keywords
layer
optical disk
protective layer
polycarbonate substrate
circular
Prior art date
Application number
KR1019990046670A
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Korean (ko)
Inventor
김덕수
김정민
Original Assignee
장용균
에스케이씨 주식회사
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Priority to KR1019990046670A priority Critical patent/KR20010038619A/en
Publication of KR20010038619A publication Critical patent/KR20010038619A/en

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
    • G11B7/2533—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins
    • G11B7/2534—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins polycarbonates [PC]
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
    • G11B7/24085—Pits
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/254—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of protective topcoat layers

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  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

PURPOSE: A method for manufacturing a noncircular optical disk is provided to prevent a dye layer from being damaged by reinforcing an adhesive strength of a dye layer. CONSTITUTION: An upper face of the first protective layer(14) in a polycarbonate substrate(11) is cut in a credit card shape. The second protective layer(15) is formed with surrounding cutting sides of the polycarbonate substrate(11), a dye layer(12), a reflecting layer(13), and the first protective layer(14). The second protective layer(15) reinforces an adhesive strength of a dye layer.

Description

비원형 광 디스크 제조방법{METHOD FOR MAKING AN OPTICAL DISK}Non-circular optical disc manufacturing method {METHOD FOR MAKING AN OPTICAL DISK}

본 발명은 비원형 광 디스크 제조방법에 관한 것으로서, 더욱 상세하게는 폴리카보네이트층과 다이층 및 반사층간의 분리 현상을 방지할 수 있도록 한 비원형 광 디스크 제조방법에 관한 것이다.The present invention relates to a non-circular optical disk manufacturing method, and more particularly to a non-circular optical disk manufacturing method that can prevent the separation phenomenon between the polycarbonate layer, the die layer and the reflective layer.

일반적으로 컴팩트 디스크(Compact Disk) 등과 같은 광 디스크는 직경 120mm와 80mm의 원형 디스크로 이루어지고, 주로 음악이나 영상 등을 수록하며, 소형 경량으로 취급이 용이하고 정보를 디지털로 저장해 원음 또는 원본 영상의 화질에 가깝게 재생할 수 있는 장점 때문에 오늘날 그 사용이 비약적으로 증대되고 있다.In general, an optical disk such as a compact disk is composed of a circular disk having a diameter of 120 mm and 80 mm, and mainly contains music or images, and is compact and lightweight, easy to handle, and digitally stores information to store original or original images. Today, its use is rapidly increasing because of its near-quality reproduction.

한편, 날로 다양해지는 소비자의 기호를 충족시키기 위해 최근에는 기존의 획일적인 원형 컴팩트 디스크와는 다른, 즉 그 외형이 비원형인 형태, 예를 들면 하트형, 자동차형, 신용카드형 등과 같은 비원형의 컴팩트 디스크가 선을 보이고 있다.On the other hand, in order to meet the ever-changing tastes of consumers, it is different from the existing uniform circular compact discs, that is, the non-circular shape, for example, the non-circular shape, for example, heart-shaped, car-type, credit card type Compact discs are showing the line.

이러한 비원형 광 디스크의 종래 제조방법을 첨부된 도면 도 1을 참조하여 설명하면, 먼저, 원형 폴리카보네이트 기판(1)에 스템퍼(도시없음)를 이용하여 기초 정보에 해당하는 피트(1a)를 형성하고(도 1a), 피트(1a)가 형성된 원형 폴리카보네이트 기판(1)의 피트(1a) 위에 다이(dye)층(2)을 스핀 코팅시킨(도 1b) 후, 이를 건조 시킨다.A conventional manufacturing method of such a non-circular optical disk will be described with reference to FIG. 1. First, a pit 1a corresponding to basic information is applied to a circular polycarbonate substrate 1 using a stamper (not shown). After forming (FIG. 1A) and spin-coating the die layer 2 (FIG. 1B) on the pit 1a of the circular polycarbonate substrate 1 in which the pit 1a is formed, it is dried.

그리고 원형 폴리카보네이트 기판(1)을 회전시키면서 다이층(2)의 가장자리에 솔벤트 노즐(도시없음)로 솔벤트를 분사시켜 다이층(2)의 가장자리를 제거하고(도 1c), 가장자리 부위가 제거된 다이층(2) 위에 반사층(3)을 스퍼터링법으로 증착시킨다.(도 1d)Then, while rotating the circular polycarbonate substrate 1, solvent is sprayed on the edge of the die layer 2 with a solvent nozzle (not shown) to remove the edge of the die layer 2 (FIG. 1C), and the edge portion is removed. The reflective layer 3 is deposited on the die layer 2 by sputtering (FIG. 1D).

그리고 도 1e와 같이 반사층(3) 위에 다이층(2)과 반사층(3)의 측면을 애워싸는 상태로 보호층(4)을 코팅 형성한 다음, 도 1f와 도 1g같이 신용카드형으로 커팅하고, 그 위에 도 1h와 같이 인쇄층(5)을 형성함으로써 도 1g와 같은 신용카드형상의 비원형 광 디스크를 제조하게 된다.Then, as shown in FIG. 1E, the protective layer 4 is coated on the reflective layer 3 with the die layer 2 and the side surfaces of the reflective layer 3 enclosed, and then cut into a credit card type as shown in FIGS. 1F and 1G. By forming the printed layer 5 thereon as shown in FIG. 1H, a non-circular optical disk of a credit card shape as shown in FIG. 1G is manufactured.

그러나 이와 같은 종래 비원형 광 디스크 제조방법은, 원형으로 제조된 광 디스크를 신용카드형으로 커팅하는 과정에서, 보호층(4)의 가장자리가 커팅되어 폴리카보네이트 기판(1)위에 순차적으로 적층 형성되는 다이층(2)과 반사층(3)의 측면이 도 2에 확대 도시된 바와같이 외부로 노출된 상태가 된다.However, such a conventional non-circular optical disk manufacturing method, in the process of cutting the optical disk manufactured in the form of a credit card, the edge of the protective layer (4) is cut to be sequentially laminated on the polycarbonate substrate (1) Side surfaces of the die layer 2 and the reflective layer 3 are exposed to the outside as shown in an enlarged view in FIG.

따라서 광 디스크의 사용중에 접착력이 약한 특성을 가지는 다이층(2)과 폴리카보네이트 기판(1)이 도 3a와 같이 분리되거나, 접착력이 약한 특성을 가지는 다이층(2)과 반사층(3)이 도 3b와 같이 분리되거나, 또는 접착력이 약한 특성을 가지는 다이층(2) 자체가 도 3c와 같이 파손되어 광 디스크가 2개로 분리되는 형태로 파손되는 문제점이 있었다.Therefore, the die layer 2 and the polycarbonate substrate 1 having the weak adhesive force during the use of the optical disk are separated as shown in FIG. 3A, or the die layer 2 and the reflective layer 3 having the weak adhesive force are shown in FIG. As shown in FIG. 3C, the die layer 2 having the characteristics of being separated from each other, or having a weak adhesive strength, is broken as shown in FIG. 3C, and the optical disk is separated into two.

본 발명은 상술한 바와 같은 종래의 문제점을 해결하기 위한 것으로서, 접착력이 약한 특성을 가지는 다이층 및 그 주변의 파손을 방지할 수 있는 비원형 광 디스크의 제조방법을 제공하는데 그 목적이 있다.SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an object thereof is to provide a die layer having a weak adhesive property and a method of manufacturing a non-circular optical disk capable of preventing breakage of the die layer.

상기의 목적을 달성하기 위하여 본 발명은, 폴리카보네이트 기판위에 다이층과 반사층 및 제1보호층을 순차적으로 적층하는 단계와, 상기 다이층과 반사층 및 제1보호층이 적층된 폴리카보네이트 기판을 비원형으로 커팅하는 단계와, 상기 비원형으로 커팅된 폴리카보네이트 기판의 제1보호층 상면과 커팅된 측면을 애워싸는 형태로 제2보호층을 코팅하는 단계와, 상기 제2보호층의 상면에 인쇄층을 형성하는 단계를 포함하는 것을 특징으로 하는 비원형 광 디스크 제조방법을 제공한다.In order to achieve the above object, the present invention, the step of sequentially stacking the die layer, the reflective layer and the first protective layer on the polycarbonate substrate, non-polycarbonate substrate laminated the die layer, the reflective layer and the first protective layer Cutting a circular shape, coating a second protective layer in a shape surrounding the upper surface and the cut side of the first protective layer of the non-circularly cut polycarbonate substrate, and printing on the upper surface of the second protective layer. It provides a non-circular optical disk manufacturing method comprising the step of forming a layer.

도 1a-1h는 종래 비원형 광 디스크의 제조 공정을 도시한 공정도.1A-1H are process drawings showing the manufacturing process of a conventional non-circular optical disk.

도 2는 종래 비원형 광 디스크의 제조방법에 의해 제조된 비원형 광 디스크를 도시한 일부확대 단면도.2 is a partially enlarged cross-sectional view showing a non-circular optical disk manufactured by a conventional method for manufacturing a non-circular optical disk.

도 3a-3c는 종래 비원형 광 디스크 제조방법에 의해 제조된 비원형 광디스크의 파손 형태를 도시한 단면도.3A-3C are cross-sectional views illustrating a breakage form of a non-circular optical disk manufactured by a conventional non-circular optical disk manufacturing method.

도 4a-4h는 본 발명에 따른 비원형 광 디스크 제조 공정을 도시한 공정도.4A-4H are process diagrams illustrating a non-circular optical disk manufacturing process according to the present invention.

도 5는 본 발명에 따른 비원형 광 디스크 제조방법에 의해 제조된 비원형 광 디스크를 도시한 일부 확대 단면도.5 is a partially enlarged cross-sectional view showing a non-circular optical disk manufactured by the method for manufacturing a non-circular optical disk according to the present invention.

＜도면의 주요부분에 대한 부호의 설명＞<Description of the code | symbol about the principal part of drawing>

11 : 폴리카보네이트 기판 12 : 다이층11 polycarbonate substrate 12 die layer

13 : 반사층 14 : 제1보호층13: reflective layer 14: first protective layer

15 : 제2보호층 16 : 인쇄층15: second protective layer 16: printed layer

이하 첨부된 도면을 참조하여 본 발명에 따른 바람직한 실시예를 상세하게 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 4는 본 발명에 따른 비원형 광 디스크의 제조과정을 도시한 공정도이고, 도 5는 본 발명에 따른 비원형 광 디스크 제조방법에 의해 제조된 비원형 광 디스크의 일예로서 신용카드형 광 디스크를 도시한 단면도.Figure 4 is a process chart showing a manufacturing process of the non-circular optical disk according to the present invention, Figure 5 is a credit card type optical disk as an example of the non-circular optical disk manufactured by the non-circular optical disk manufacturing method according to the present invention Shown cross section.

도 4를 참조하여 본 발명에 따른 비원형 광디스크 제조방법을 설명하면, 먼저, 도 4a와 같이 원형 폴리카보네이트 기판(11)에 스템퍼(도시없음)를 이용하여 기초 정보에 해당하는 피트(11a)를 형성하고, 피트(11a)가 형성된 원형 폴리카보네이트 기판(11)의 피트(11a) 위에 도 4b와 같이 다이(dye)층(12)을 스핀 코팅 시킨 후, 이를 건조 시킨다.Referring to FIG. 4, a non-circular optical disc manufacturing method according to the present invention will be described. First, as shown in FIG. 4A, a pit 11a corresponding to basic information is used by using a stamper (not shown) on a circular polycarbonate substrate 11. And spin-dye the die layer 12 as shown in FIG. 4B on the pit 11a of the circular polycarbonate substrate 11 on which the pit 11a is formed, and then dry it.

그리고 건조된 다이층(12)의 상면에 도 4c와 같이 반사층(13)을 스퍼터링법으로 증착시키고, 반사층(13) 상면에 도 4d와 같이 제1보호층(14)을 코팅 형성한 다음, 도 4e와 도 4f와 같이 신용카드형으로 커팅한다.Then, the reflective layer 13 is deposited by sputtering on the upper surface of the dried die layer 12 as shown in FIG. 4C, and the first protective layer 14 is coated on the upper surface of the reflective layer 13 as shown in FIG. 4D. 4e and 4f are cut into credit card types.

그리고 신용카드형으로 커팅된 폴리카보네이트 기판(11)의 제1보호층(14) 상면과 커팅된 측면 즉, 폴리카보네이트 기판(11), 다이층(12), 반사층(13), 제1보호층(14)의 커팅된 측면을 애워싸는 형태로 제2보호층(15)을 도 4g와 같이 코팅하고, 제2보호층(15)의 상면에 도 4h와 같이 인쇄층(16)을 형성함으로써, 도 4f와 같은 신용카드형상의 비원형 광 디스크를 제조하게 된다.The upper surface of the first protective layer 14 and the cut side of the polycarbonate substrate 11 cut into a credit card type, that is, the polycarbonate substrate 11, the die layer 12, the reflective layer 13, and the first protective layer By coating the second protective layer 15 in the form of enclosing the cut side of the (14) as shown in Figure 4g, and forming the print layer 16 as shown in Figure 4h on the upper surface of the second protective layer 15, A non-circular optical disk of credit card shape as shown in FIG. 4F is manufactured.

따라서 이와 같은 본 발명에 따른 비원형 광 디스크 제조방법을 통해 제조된 비원형 광 디스크는 도 5에 확대 도시된 바와같이, 신용카드형으로 커팅된 폴리카보네이트 기판(11)의 제1보호층(14) 상면과 커팅된 측면 즉, 폴리카보네이트 기판(11), 다이층(12), 반사층(13), 제1보호층(14)의 커팅된 측면을 애워싸는 형태로 제2보호층(15)이 형성되어 있으므로, 접착력이 약한 특성을 가지는 다이층의 접착력이 상기 제2보호층(15)에 의해서 보강되게 된다.Therefore, the non-circular optical disk manufactured by the non-circular optical disk manufacturing method according to the present invention is the first protective layer 14 of the polycarbonate substrate 11, cut into a credit card type, as shown in enlarged in FIG. The second protective layer 15 is formed to surround the upper surface and the cut side, that is, the cut side of the polycarbonate substrate 11, the die layer 12, the reflective layer 13, and the first protective layer 14. Since it is formed, the adhesive force of the die layer having the weak adhesive force is reinforced by the second protective layer 15.

그러므로 본 발명에서는 종래 접착력이 약한 특성을 가지는 다이층의 측면이 외부로 노출되어 있는 방식에서 발생되던 다이층 및 그 주변의 파손을 방지할 수 있게 된다.Therefore, in the present invention, it is possible to prevent breakage of the die layer and its surroundings, which were generated in a manner in which the side surface of the die layer having a weak adhesive force is exposed to the outside.

이상에서 설명한 바와 같이 본 발명 비원형 광 디스크 제조방법에 의하면, 제2보호층이 접착력이 약한 특성을 가지는 다이층의 접착력을 보강시키게 되므로, 종래 방식에서 발생되던 다이층 및 그 주변의 파손을 방지할 수 있게 된다. 따라서 품질 및 수명이 향상된 비원형 광 디스크를 얻을 수 있게 된다.As described above, according to the non-circular optical disk manufacturing method of the present invention, since the second protective layer reinforces the adhesive force of the die layer having the weak adhesive property, the die layer and its surroundings, which are generated in the conventional method, are prevented. You can do it. Thus, it is possible to obtain a non-circular optical disk with improved quality and lifespan.

Claims (1)

폴리카보네이트 기판위에 다이층과 반사층 및 제1보호층을 순차적으로 적층하는 단계와,Sequentially laminating a die layer, a reflective layer and a first protective layer on the polycarbonate substrate, 상기 다이층과 반사층 및 제1보호층이 적층된 폴리카보네이트 기판을 비원형으로 커팅하는 단계와,Non-circularly cutting the polycarbonate substrate on which the die layer, the reflective layer, and the first protective layer are stacked; 상기 비원형으로 커팅된 폴리카보네이트 기판의 제1보호층 상면과 커팅된 측면을 애워싸는 형태로 제2보호층을 코팅하는 단계와,Coating a second protective layer in a form surrounding the upper surface and the cut side of the first protective layer of the non-circularly cut polycarbonate substrate; 상기 제2보호층의 상면에 인쇄층을 형성하는 단계를 포함하는 것을 특징으로 하는 비원형 광 디스크 제조방법.Non-circular optical disk manufacturing method comprising the step of forming a printed layer on the upper surface of the second protective layer.
KR1019990046670A 1999-10-26 1999-10-26 Method for making an optical disk KR20010038619A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60136928A (en) * 1983-12-26 1985-07-20 Fujitsu Ltd Manufacture of optical disc
JPS63237993A (en) * 1987-03-27 1988-10-04 Dainippon Printing Co Ltd Optical recording material
JPH08295383A (en) * 1995-04-24 1996-11-12 Kao Corp Optical disk media
US5579296A (en) * 1995-01-18 1996-11-26 Cyberwerks Interactive, L.L.C. Optically readable thin film digital data storage medium
US5616450A (en) * 1993-04-10 1997-04-01 Taiyo Yuden Co., Ltd. Method for fabricating an optical information medium

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60136928A (en) * 1983-12-26 1985-07-20 Fujitsu Ltd Manufacture of optical disc
JPS63237993A (en) * 1987-03-27 1988-10-04 Dainippon Printing Co Ltd Optical recording material
US5616450A (en) * 1993-04-10 1997-04-01 Taiyo Yuden Co., Ltd. Method for fabricating an optical information medium
US5579296A (en) * 1995-01-18 1996-11-26 Cyberwerks Interactive, L.L.C. Optically readable thin film digital data storage medium
JPH08295383A (en) * 1995-04-24 1996-11-12 Kao Corp Optical disk media

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