KR0175519B1 - Both-sided disk and its producing method - Google Patents

Both-sided disk and its producing method Download PDF

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Publication number
KR0175519B1
KR0175519B1 KR1019960001377A KR19960001377A KR0175519B1 KR 0175519 B1 KR0175519 B1 KR 0175519B1 KR 1019960001377 A KR1019960001377 A KR 1019960001377A KR 19960001377 A KR19960001377 A KR 19960001377A KR 0175519 B1 KR0175519 B1 KR 0175519B1
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South Korea
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disk
reflective layer
layer
sided
optical disk
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KR1019960001377A
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Korean (ko)
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KR970060081A (en
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류수선
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장용균
주식회사에스.케이.씨
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    • 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
    • G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
    • G11B7/263—Preparing and using a stamper, e.g. pressing or injection molding substrates
    • 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
    • G11B7/2403—Layers; Shape, structure or physical properties thereof
    • G11B7/24035—Recording layers
    • G11B7/24038—Multiple laminated 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
    • G11B7/2403—Layers; Shape, structure or physical properties thereof
    • G11B7/24062—Reflective layers

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Optical Record Carriers (AREA)

Abstract

본 발명은 양면 모두를 활용할 수 있는 디스크와 이렇게 성형되는 디스크의 제조공정을 단순화한 양면용 디스크 제조방법에 관한 것이다.The present invention relates to a disk capable of utilizing both sides and a disk manufacturing method for both sides which simplifies the manufacturing process of the disk thus formed.

본 발명은 단면의 수평을 중심으로 대칭되게 반사층을 형성시키고, 상하 반사층간의 거리는 수지로 채워져 소정의 디스크 두께를 맞추도록 한 것이다.The present invention is to form a reflective layer symmetrically about the horizontal of the cross section, and the distance between the upper and lower reflective layers is filled with a resin so as to meet a predetermined disk thickness.

또한, 양면용 디스크를 제조하기 위한 스탬퍼(120)를 마스터 글라스(114), 니켈 화더(116 ; Ni Father)로 이어지는 공정에서 성형해 내고, 가동측 금형과 고정측 금형에 한 쌍의 스탬퍼를 동시에 장착 한 번의 사출성형으로 양면용 디스크를 제작하여 접착층이 없는 양면용 디스크를 제조하는 것이다.In addition, the stamper 120 for manufacturing the double-sided disk is molded in a process leading to the master glass 114 and the nickel father 116 (Ni Father), and a pair of stampers are simultaneously applied to the movable mold and the fixed mold. Mounting A double-sided disc is produced by a single injection molding without an adhesive layer.

이와 같이 본 발명은 종래에 비해 공정 단계를 대폭 축소 생산성을 높히고 불량율을 낮춰 제조원가를 크게 낮출 수 있다.As described above, the present invention can greatly reduce the production steps compared to the conventional process, thereby increasing productivity and lowering the defective rate.

Description

양면용 디스크와 그 제조방법Double-sided disk and its manufacturing method

제1도는 종래 단면 디스크의 구조도면.1 is a structural diagram of a conventional sectional disk.

제2도는 종래 단면 디스크의 제조 공정 도면.2 is a manufacturing process diagram of a conventional single-sided disk.

제3도는 종래 양면용 디스크의 구조도면.3 is a structural diagram of a conventional double-sided disk.

제4도는 본 발명에 따른 양면용 디스크의 구조도면이다.4 is a structural diagram of a double-sided disk according to the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

10 : 인쇄층 14,14' : 반사층10: printed layer 14,14 ': reflective layer

12,12' : UV 수지층 16,16' : 투명기판12,12 ': UV resin layer 16,16': transparent substrate

18 : 접합면 20,20' : 입사면18: junction surface 20,20 ': incident surface

30 : 대물렌즈 38 : 중심수평면30: objective lens 38: center horizontal plane

40,40' : 입사면 42,42' : 보호층40,40 ': incident surface 42,42': protective layer

44,44' : 반사층 46 : 투명기판44,44 ': reflective layer 46: transparent substrate

본 발명은 광 디스크에 관한 것으로, 특히 양면 모두를 활용할 수 있는 양면용 디스크와 그 제조공정이 단축되는 디스크 제조공정에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disk, and more particularly, to a disk for double-sided disk that can utilize both sides and a disk manufacturing process for shortening the manufacturing process thereof.

종래의 일반적인 광 디스크는 단면(일면)만 사용하는 경우, 그 구조는 제1도와 같이 저면으로부터 투명기판(16), 반사층(14), 보호층(12)으로 구성되고, 겉면에 인쇄층(10)이 형성되어져 투명기판(16)은 입사면을 이루면서 광이 입사되는 부분이고, 나머지는 기록면층을 구성하게 된다.When a conventional general optical disk uses only one side (one side), the structure is composed of a transparent substrate 16, a reflective layer 14, a protective layer 12 from the bottom as shown in FIG. 1, and a printed layer 10 on the outside. ) Is formed so that the transparent substrate 16 is a part where light enters while forming an incident surface, and the rest constitutes a recording surface layer.

이에 따라 상기한 광 디스크 구조는 대물렌즈를 통한 레이저 빔이 기판의 입사면측으로 입사하게 되어 정보가 기록되어 있는 기록층에 포커싱(Focusing)하여 정보를 판독하게 된다.Accordingly, in the optical disk structure, the laser beam through the objective lens is incident on the incident surface side of the substrate, and focuses on the recording layer on which the information is recorded to read the information.

또한, 이와 같인 디스크를 제조하는 방법은 제2도와 같아서, 글라스(110) 위에 포토층(112)을 입혀서 레이저 빔으로 요철부를 컷팅시키고, 글라스(110)의 요철부가 형성된 포토층(112)을 현상액으로 세정하며, 이렇게 형성된 글라스 마스터(114)에 은(Ag)을 증착시키고, 은(Ag)이 증착된 글라스 마스터(114)에 니켈(Ni)을 도금한다.In addition, the method of manufacturing such a disk is the same as in FIG. 2, by coating the photo layer 112 on the glass 110 to cut the uneven portion by the laser beam, the photo layer 112 formed with the uneven portion of the glass 110 is a developer After cleaning, silver (Ag) is deposited on the glass master 114 thus formed, and nickel (Ni) is plated on the glass master 114 on which silver (Ag) is deposited.

이렇게 니켈(Ni)이 도금된 상태의 판을 니켈 화더(116, Ni Father)라 칭하고, 이 니켈 화더(116) 위에 니켈 마더(118, Ni Mother)를 성형시켜 스탬퍼(120, STamper)를 만들고, 이 스탬퍼(120)를 이용 사출성형법으로 대량의 단면 디스크를 제조하게 되는 것이다.The plate plated with nickel (Ni) is called a nickel father (116, Ni Father), and a nickel mother (118, Ni Mother) is formed on the nickel holder 116 to make a stamper (120, STamper), The stamper 120 is used to produce a large amount of single-sided disc by injection molding.

이러한 기본적인 원리의 단면만 활용하는 광 디스크는 한면만 사용하기 때문에 정보를 수록할 면적이 제한되어지고, 보다 고밀도로 집적시키기 위해서는 트랙피치를 줄이는 정도로 보다 많은 양의 정보를 수록하도록 되어 있다.Optical disks using only one side of this basic principle use only one side, so the area for storing information is limited, and in order to integrate more densely, the optical disc contains a larger amount of information to reduce the track pitch.

한편, 이러한 일면만 활용하는 광 디스크의 단점을 보완하고자 개발된 것이 양면용 광 디스크로, 2개의 단면 디스크를 단순히 접착함으로써 상기한 일면만 활용하는 것에 비해 두배의 정보를 수록할 수 있는 면을 가지게 되며, 그 구성은 제3도와 같다.On the other hand, the two-sided optical disk was developed to compensate for the shortcomings of the optical disk using only one side, by simply bonding two single-sided disk to have a side that can contain twice as much information than using only one side described above. The configuration is shown in FIG.

즉, 종래의 양면용 광디스크는 UV 수지층(12), 반사층(14), 투명기판(16) 및 입사면(20)으로 구성되는 단면형의 광 디스크를 2매를 접착제로 붙여서 대칭되게 똑같은 UV 수지층(12'), 반사층(14'), 투명기판(16') 및 입사면(20')을 갖추게 한 것이며, 접합면(18)은 접착제를 이용하여 떨어지지 않게 일체화시킨 것이다.That is, in the conventional double-sided optical disk, two sectional optical disks composed of the UV resin layer 12, the reflective layer 14, the transparent substrate 16, and the incident surface 20 are glued together with two sheets of adhesive and have the same UV symmetrically. The resin layer 12 ', the reflective layer 14', the transparent substrate 16 ', and the incident surface 20' are provided, and the bonding surface 18 is integrated so that it will not fall off using an adhesive agent.

그러나, 상기한 종래의 양면용 광 디스크를 사용하는 경우 제2도의 제조공정을 거쳐 만들어진 스탬퍼(Stamper)를 이용해 사출성형법으로 성형된 2매의 단면 디스크를 글라스 마스터, Ni Father, Ni Mother 그리고 스탬퍼로 이어지는 공정과 각기 다른 내용을 기록한 스탬퍼를 2번의 사출성형 공정을 거쳐 단면 디스크를 마무리 단계에서 접착 공정을 거쳐 양면용 디스크가 완성되는 것이다.However, in the case of using the conventional double-sided optical disk described above, two single-sided disks formed by injection molding using a stamper made through the manufacturing process of FIG. 2 are used as a glass master, Ni Father, Ni Mother, and stamper. The two-sided disc is completed through the injection process at the finishing stage through the injection molding process of the stamper which records the following process and different contents twice.

이에 본 발명에서는 종래 공정을 단순화시켜 생산하는 양면용 디스크 및 제조방법을 제공하고자 한다.Accordingly, the present invention is to provide a double-sided disk and a manufacturing method for simplifying the conventional process.

이를 위한 본 발명은 단면의 수평을 중심으로 대칭되게 반사층을 형성시켜 대물렌즈를 통과한 레이저빔이 반사층에 수록된 정보를 판독하게 한 것으로, 상하 반사층간의 거리는 투명기판으로 채워져 디스크 두께를 맞추도록 한 것이다.The present invention for this purpose is to form a reflective layer symmetrically about the horizontal of the cross-section so that the laser beam passing through the objective lens to read the information contained in the reflective layer, the distance between the upper and lower reflective layers is filled with a transparent substrate to match the disk thickness .

이하 첨부도면을 참고하여 본 발명을 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

본 발명은 광 디스크의 두께를 상·하로 대칭되게 중심 수평면(38)을 기준으로 상부에 반사층(44)을 형성시키고, 하부에도 대칭되게 반사층(44')을 형성시켜서 단일의 광 디스크내에 양면이 반사층을 갖도록 하고, 반사층(44,44')과 입사면(40,40') 사이에는 보호층(42,42')이 형성되고, 수평면이 되는 중심부 즉, 상부 반사층(44)과 하부반사층(44') 사이의 중심 수평면(38)은 투명기판(46)으로 대물렌즈(22)의 광이 타 반사층에 영향을 미치지 않는 거리로 제작된 양면용 광 디스크이다.According to the present invention, the reflective layer 44 is formed on the upper side with respect to the center horizontal plane 38 so that the thickness of the optical disc is symmetrically up and down, and the reflective layer 44 'is formed symmetrically on the lower side so that both sides of the optical disc are formed in a single optical disc. A protective layer 42, 42 'is formed between the reflective layers 44, 44' and the incident surfaces 40, 40 ', and has a central surface, that is, the upper reflective layer 44 and the lower reflective layer ( The center horizontal plane 38 between the 44 ') is a transparent substrate 46, which is a double-sided optical disk manufactured at a distance such that the light of the objective lens 22 does not affect the other reflective layer.

제4도는 본 발명의 구조단면도로, 상면의 보호층(42), 반사층(44)이 형성되어 대물렌즈(30)를 통한 조사광은 반사층(44)에 포커싱이 맞추어지게 되고, 이에 대응하여 즉, 투명기판(46)을 중심으로 대칭되게 반사층(44')과 보호층(42')이 형성되어 있으므로, 이면위치의 광 디스크를 판독하려면 광 디스크를 뒤집어 놓고 플레이 시켜서 대물렌즈(30)가 이면의 반사층(44')에 수록된 정보를 읽게 되는 구조이다.4 is a structural cross-sectional view of the present invention, in which an upper protective layer 42 and a reflective layer 44 are formed so that the irradiation light through the objective lens 30 is focused on the reflective layer 44, that is, Since the reflective layer 44 'and the protective layer 42' are formed symmetrically about the transparent substrate 46, in order to read the optical disk at the backside position, the optical disk is turned upside down and played so that the objective lens 30 The information contained in the reflective layer 44 'is read.

한편, 상기한 양면용 디스크를 제조하기 위한 방법은 다음과 같다.On the other hand, the method for manufacturing the double-sided disk is as follows.

즉, 글라스(110)양면에 포토층(112)을 입혀서 레이저 빔으로 요철부를 컷팅시키고, 요철부가 형성된 포토층(112)을 현상액으로 세정하여 글라스 마스터(114)를 만들고, 이 글라스 마스터(114)의 요철부에 은(Ag)을 증착시키고, 은(Ag)이 증착된 글라스 마스터(114)에 니켈(Ni)을 도금하여 니켈 화더(116 ; Ni Father)를 만들며, 상기 니켈 화더(116)로부터 스탬퍼(120 ; Stamper)를 만드는 공정을 두번 반복하여 양면 디스크를 사출성형 할 수 있는 한 쌍의 스탬퍼를 제조하게 되는 것이다.That is, the photo layer 112 is coated on both sides of the glass 110 to cut the uneven portion with a laser beam, and the photo layer 112 having the uneven portion formed therein is cleaned with a developer to form the glass master 114. Depositing silver (Ag) on the uneven portion of the plate, and plating nickel (Ni) on the glass master 114 on which silver (Ag) is deposited to form a nickel father (116; Ni Father), and from the nickel folder 116 By repeating the process of making a stamper (120; Stamper) twice, a pair of stampers capable of injection molding a double-sided disk is manufactured.

이와 같이 본 발명은 종래에 비해 중간의 니켈 마더 성형공정이 생략되는 것이며, 한 쌍의 스탬퍼 제조에 있어 2단계의 공정을 줄임으로써 제조 원가 측면에서 큰 개선을 하였다.As described above, the present invention eliminates the intermediate nickel mother molding process as compared with the related art, and in the manufacture of a pair of stampers, a large improvement in manufacturing cost is achieved by reducing the two-step process.

또한, 스탬퍼 금형을 한쌍으로 마련하여 가동측 금형과 고정측 금형에 동시에 장착하여 한번의 사출성형으로 양면 디스크를 제작하게 되므로 종래에 2매의 단면 디스크를 만들기 위해 두번의 사출성형하는 공정을 개선한 것이어서 두배의 생산성 향상을 얻게 된다.In addition, since a pair of stamper molds are provided and mounted on the movable mold and the fixed mold at the same time, the double-sided disc is manufactured by one injection molding. Thus, the conventional injection molding process for improving two single-sided discs has been improved. This results in a double productivity increase.

또한, 본 발명은 접착공정이 필요없게 되므로 종래에 접착공정에서 발생되는 불량율을 완전히 제거하게 되므로 엄청난 수율 향상을 얻을 수 있다.In addition, since the present invention eliminates the need for the adhesion process, it is possible to completely eliminate the defect rate generated in the conventional adhesion process, thereby obtaining a huge yield improvement.

이와 같이 본 발명의 방법을 양면용 디스크 생산에 적용하게 되면 공정단계를 대폭 축소하였을 뿐만 아니라, 생산성을 두배로 올릴 수 있고 불량율도 낮출 수 있어 엄청난 제조원가 절감 효과를 볼 수 있게 되는 것이다.In this way, if the method of the present invention is applied to the production of double-sided disk, not only can greatly reduce the process step, but also can double the productivity and lower the defective rate, which will be able to see enormous manufacturing cost savings.

Claims (3)

광 디스크의 두께를 상·하로 구분하여 중심 수평면을 기준으로 상부에 상부 반사층을 형성시키고, 하부에도 상부의 반사층과 대칭되게 하부반사층을 형성 양면에 반사층을 갖는 광 디스크에 있어서, 접착층을 형성하고 있지 않는 양면용 광 디스크.The upper reflective layer is formed on the upper side based on the center horizontal plane by dividing the thickness of the optical disk, and the lower reflective layer is formed on the lower side symmetrically with the upper reflective layer. The optical disk having the reflective layer on both sides does not form an adhesive layer. Do not use two-sided optical disk. 제1항에 있어서, 반사층과 외면사이에는 보호층이 형성되고, 상부 반사층과 하부 반사층 사이의 가로면은 수지층으로 채워지고 플레이어의 대물렌즈를 통과한 빔이 입사면 반대측의 영향을 미치지 않는 거리로 제작된 양면용 광 디스크.2. The distance of claim 1, wherein a protective layer is formed between the reflective layer and the outer surface, the horizontal surface between the upper reflective layer and the lower reflective layer is filled with a resin layer, and the distance that the beam passing through the objective lens of the player does not affect the opposite side of the incident surface. Optical disc for use on both sides. 양면용 광 디스크를 제조하기 위하여, 글라스 포토층을 입혀서 레이저 빔으로 요철부를 컷팅시키고, 요철부가 형성된 포토층을 현상액으로 세정하여 글라스 마스터를 만들고, 이 글라스 마스터의 요철부에 은(Ag)을 증착시키고, 은(Ag)이 증착된 글라스 마스터에 니켈(Ni)을 도금하여 니켈 화더(Ni Father)를 만들며, 상기 니켈 화더로부터 스탬퍼(Stamper)를 만들어 디스크를 사출성형하는데 있어서, 가동측 금형과 고정측 금형에 한 쌍의 스탬퍼를 동시에 장착하여 한번의 공정으로 양면용 광 디스크를 제조하는 방법.In order to manufacture a double-sided optical disk, a glass photo layer is coated to cut an uneven portion with a laser beam, the photo layer on which the uneven portion is formed is washed with a developer to form a glass master, and silver (Ag) is deposited on the uneven portion of the glass master. In order to form a nickel father (Ni Father) by plating nickel (Ni) on a glass master deposited with silver (Ag), and a stamper (stamper) is made from the nickel header to fix the disk with the movable mold. A method of manufacturing a double-sided optical disk in one step by mounting a pair of stampers on the side mold at the same time.
KR1019960001377A 1996-01-23 1996-01-23 Both-sided disk and its producing method KR0175519B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100455381B1 (en) * 2002-02-28 2004-11-06 삼성전자주식회사 Disc for developing performance of an optical disc driver and manufacturing method thereof
WO2013073923A1 (en) * 2011-11-18 2013-05-23 주식회사 플렉스인포메이션 Optical disc made of single disc plate

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100455381B1 (en) * 2002-02-28 2004-11-06 삼성전자주식회사 Disc for developing performance of an optical disc driver and manufacturing method thereof
WO2013073923A1 (en) * 2011-11-18 2013-05-23 주식회사 플렉스인포메이션 Optical disc made of single disc plate

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