KR100694584B1 - Method for fabricating dvd-compatible holographic rom disk and disk structure thereof - Google Patents

Method for fabricating dvd-compatible holographic rom disk and disk structure thereof Download PDF

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KR100694584B1
KR100694584B1 KR1020040106381A KR20040106381A KR100694584B1 KR 100694584 B1 KR100694584 B1 KR 100694584B1 KR 1020040106381 A KR1020040106381 A KR 1020040106381A KR 20040106381 A KR20040106381 A KR 20040106381A KR 100694584 B1 KR100694584 B1 KR 100694584B1
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holographic
layer
disk
dvd
disc
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KR20060067570A (en
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박주연
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주식회사 대우일렉트로닉스
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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
    • 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
    • G11B7/24018—Laminated discs
    • G11B7/24027—Layers; Shape, structure or physical properties thereof
    • 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
    • G11B7/256—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 layers improving adhesion between 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
    • G11B7/258—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 reflective 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
    • G11B2007/0003—Recording, reproducing or erasing systems characterised by the structure or type of the carrier
    • G11B2007/0006—Recording, reproducing or erasing systems characterised by the structure or type of the carrier adapted for scanning different types of carrier, e.g. CD & DVD
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/23—Disc-shaped record carriers characterised in that the disc has a specific layer structure
    • G11B2220/235—Multilayer discs, i.e. multiple recording layers accessed from the same side
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2504—Holographic discs; Holographic digital data storage [HDDS]
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs
    • G11B2220/2562—DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs

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

Abstract

본 발명은 효율적인 DVD 호환 홀로그래픽 롬용 디스크의 제조방법 및 홀로그래픽 디스크 구조에 관한 것이다. 즉 본 발명에서는 DVD 호환 홀로그래픽 롬 디스크 제조 공정에 있어서, DVD 호환 홀로그래픽 디스크에 이색성 반사층을 설치하여 홀로그래픽 디스크상 데이터 복제가 끝남과 동시에 홀로그래픽 롬 디스크의 제조가 완료되도록 함으로써 종래 디스크 본딩 고정을 포함한 2단계 DVD 호환 홀로그래픽 롬 디스크 제조 공정을 1단계 공정으로 줄일 수 있어 디스크 본딩 공정의 불량 발생 시 선행 공정인 데이터 복제 공정의 소모 공정화되는 것을 방지시켜 홀로그래픽 롬 디스크의 제조 수율을 높이고, 디스크 제조 경비를 절감시킬 수 있다.The present invention relates to a method for producing an efficient DVD compatible holographic ROM disc and to a holographic disc structure. That is, in the present invention, in the DVD-compatible holographic ROM disc manufacturing process, a dichroic reflective layer is provided on the DVD-compatible holographic disc to complete the manufacture of the holographic ROM disc at the same time as the data copying on the holographic disc is completed, and thus the conventional disc bonding is performed. The manufacturing process of the two-step DVD compatible holographic ROM disc including the fixing can be reduced to the one-step process, so that the production process of the holographic ROM disc can be improved by preventing the data copying process, which is a preliminary process, from being consumed when the disc bonding process is defective. This can reduce disk manufacturing costs.

Description

ＤＶＤ 호환 홀로그래픽 롬 디스크 제조방법 및 디스크 구조{METHOD FOR FABRICATING DVD-COMPATIBLE HOLOGRAPHIC ROM DISK AND DISK STRUCTURE THEREOF}TECHNICAL FOR FABRICATING DVD-COMPATIBLE HOLOGRAPHIC ROM DISK AND DISK STRUCTURE THEREOF}

도 1은 종래 DVD 호환 홀로그래픽 롬 디스크의 단면 예시도,1 is a cross-sectional view of a conventional DVD compatible holographic ROM disc;

도 2는 종래 DVD 호환 홀로그래픽 롬 디스크의 제조 방법을 예시한 공정 단면도,2 is a process cross-sectional view illustrating a method for manufacturing a conventional DVD compatible holographic ROM disc;

도 3은 본 발명의 실시 예가 적용되는 홀로그래픽 롬 시스템의 개략적인 블록 구성도,3 is a schematic block diagram of a holographic ROM system to which an embodiment of the present invention is applied;

도 4는 본 발명의 실시 예에 따라 이색성 반사층이 포함된 DVD 호환 홀로그래픽 롬 디스크의 단면 예시도,4 is an exemplary cross-sectional view of a DVD compatible holographic ROM disc including a dichroic reflective layer according to an embodiment of the present invention;

도 5는 본 발명의 실시 예에 따른 DVD 호환 홀로그래픽 롬 디스크의 제조 방법을 예시한 공정 단면도.5 is a process sectional view illustrating a method of manufacturing a DVD compatible holographic ROM disc according to an embodiment of the present invention.

<도면의 주요 부호에 대한 간략한 설명><Brief description of the major symbols in the drawings>

100 : 상부 서브스트레이트층 400 : 이색성 반사층100: upper substrate layer 400: dichroic reflective layer

104 : 본딩층 106, 110 : 하부 서브스트레이트층104: bonding layer 106, 110: lower substrate layer

108 : 포토폴리머층 108: photopolymer layer

본 발명은 홀로그래픽 롬(holographic ROM)에 관한 것으로, 특히 효율적인 DVD 호환 홀로그래픽 롬용 디스크의 제조방법 및 홀로그래픽 디스크 구조에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to holographic ROM, and more particularly, to a method for producing an efficient DVD compatible holographic ROM disk and a holographic disk structure.

일반적으로 DVD 호환 홀로그래픽 롬 디스크의 제조 공정에서는 홀로그래픽 디스크 내부에 모든 레이저 파장을 반사하는 반사층(reflective layer)을 가지고 있어서 반드시 코니컬 미러(conical mirror)를 이용한 홀로그램 데이터 복제가 완료된 이후에 반사층(reflective layer)을 포함하는 상부 서브스레이트층(substrate layer)를 기록 완료된 디스크에 본드(bond)를 이용하여 접착시켜 도 1에서 보여지는 바와 같이 하부 서브스트레이트층(106, 110), 포토폴리머층(108), 본딩층(bonding layer)(104), 반사층(reflective layer)(102)을 포함하는 하부 서브스트레이트층(substrate layer)(100) 구조의 DVD 호환 홀로그래픽 롬 디스크를 제조하였다. In general, a DVD-compatible holographic ROM disc manufacturing process has a reflective layer that reflects all laser wavelengths inside the holographic disc. Therefore, after the holographic data copy using the conical mirror is completed, the reflective layer ( The upper substrate layer including the reflective layer is bonded to the recorded disk by using a bond to bond the lower substrate layers 106 and 110 and the photopolymer layer 108 as shown in FIG. ), A DVD compatible holographic ROM disc having a lower substrate layer (100) structure including a bonding layer (104) and a reflective layer (102).

도 2는 종래 DVD 호환 홀로그래픽 롬 디스크의 데이터 제조 공정을 도시한 것이다.2 illustrates a data manufacturing process of a conventional DVD compatible holographic ROM disc.

즉, 종래에는 상기 도 2의 (a)에서 보여지는 바와 같이 코니컬 미러(conical mirror)(200)를 이용하여 홀로그램 데이터의 복제를 수행한 후, 도 2의 (b)에서와 같이 반사층(102)을 포함하는 상부 서브스트레이트층(100)을 기록 완료된 디스크에 본딩층(104)을 이용하여 접착하는 디스크 본딩 공정을 통해 도 2의 (c)에서와 같은 DVD 호환 홀로그래픽 롬 디스크를 완성하는 2단계 공정으로 홀로그램 데이터 복제가 수행되어 왔다.That is, in the related art, after replicating the hologram data using the conical mirror 200 as shown in FIG. 2 (a), the reflective layer 102 as shown in FIG. 2 to complete the DVD compatible holographic ROM disk as shown in FIG. 2 (c) through a disk bonding process in which the upper substrate layer 100 including the upper substrate layer 100 is bonded to the recorded disk using the bonding layer 104. Hologram data replication has been performed as a step process.

그러나 위와 같이 종래 2단계 공정을 거쳐 DVD(digital versatile disk) 호환 홀로그래픽 롬 디스크를 제조하는 방법에서는 홀로그래픽 데이터의 복제를 완료한 후에 반사층이 포함된 상부 서브스트레이트층을 본딩 하여야 하는 추가의 공정이 필요하게 되어 제조 공정수가 늘어나며, 또한 홀로그래픽 디스크 데이터 복제 후 본딩 공정이 수행되도록 되어 있어 디스크 본딩 공정 불량 발생 시 선행공정인 데이터 복제 공정이 소모 공정화 되는 문제점이 있었다.However, in the method of manufacturing a digital versatile disk (DVD) compatible holographic ROM disk through the conventional two-step process as described above, an additional process of bonding the upper substrate layer including the reflective layer after copying the holographic data is completed Since the number of manufacturing processes is required, and the bonding process is performed after holographic disk data copying, there is a problem that the data copying process, which is a preceding process, is consumed when the disk bonding process is defective.

따라서, 본 발명의 목적은 효율적인 DVD 호환 홀로그래픽 롬용 디스크의 제조방법 및 홀로그래픽 디스크 구조를 제공함에 있다.Accordingly, an object of the present invention is to provide an efficient method for manufacturing a DVD compatible holographic ROM disk and a holographic disk structure.

상술한 목적을 달성하기 위한 본 발명은 DVD 호환 홀로그래픽 롬 디스크를 효율적으로 제조하는 방법으로서, (a)홀로그램 데이터가 복제될 홀로그래픽 디스크 상부에 이색성 반사층이 포함된 상부 서브스트레이트층을 접합시키는 단계와, (b)코니컬 미러를 이용한 각도 중첩을 반복하여 상기 이색성 반사층이 포함된 홀로그래픽 디스크상에 홀로그램 데이터를 기록시키는 단계를 포함하는 것을 특징으로 한다.In order to achieve the above object, the present invention provides a method for efficiently manufacturing a DVD-compatible holographic ROM disk, comprising: (a) bonding an upper substrate layer including a dichroic reflective layer on top of a holographic disk to which hologram data is to be copied; And (b) repeating the angular overlap using the conical mirror to record the hologram data on the holographic disk including the dichroic reflective layer.

이하, 첨부된 도면을 참조하여 본 발명에 따른 바람직한 실시 예의 동작을 상세하게 설명한다.Hereinafter, with reference to the accompanying drawings will be described in detail the operation of the preferred embodiment according to the present invention.

도 3은 본 발명의 실시 예가 적용되는 홀로그래픽 롬 시스템을 간략하게 도시한 블록 구성도이다. 상기 도 3을 참조하면, 본 발명이 적용되는 홀로그래픽 롬 시스템은 광원(10), HWP(Half Wave Plate)(12, 22)과, 광 확장기(beam expander)(14), 그리고 편광 분리기(polarizer beam splitter)(16), 편광기(18, 24), 반사 미러(20, 26, 28), 코니컬 미러(conical mirror)(30), 광 기록매체(32), 마스크(34) 등으로 구성된다. 3 is a block diagram schematically illustrating a holographic ROM system to which an embodiment of the present invention is applied. Referring to FIG. 3, the holographic ROM system to which the present invention is applied includes a light source 10, a half wave plate (HWP) 12 and 22, a beam expander 14, and a polarizer. beam splitter 16, polarizers 18, 24, reflective mirrors 20, 26, 28, conical mirror 30, optical record carrier 32, mask 34, and the like. .

이하 위 도 3을 참조하여 홀로그래픽 롬 시스템의 동작을 살펴보면, 먼저 홀로그래픽 롬 시스템은 기록을 위한 두 개의 광 경로를 통해 신호광(signal beam)과 기준광(reference beam)을 광 기록매체(optical media)(32)인 광 디스크에 조사하여 이들 광 사이의 간섭으로 인해 생성되는 간섭 무늬 패턴으로 3차원 홀로그래픽 데이터를 기록한다.Hereinafter, referring to FIG. 3, an operation of the holographic ROM system is performed. First, the holographic ROM system transmits a signal beam and a reference beam through optical paths through two optical paths for recording. The optical disk (32) is irradiated to record three-dimensional holographic data in an interference fringe pattern generated by the interference between these lights.

광원(light source)(10)으로부터 입사되는 광은 예들 들어 532nm 파장의 레이저광이 될 수 있으며, 위 광원(10)으로부터의 입사광은 HWP(12)와, 광 확장기(14) 등을 거쳐 편광 분리기(16)로 제공된다. The light incident from the light source 10 may be, for example, a laser light having a wavelength of 532 nm, and the incident light from the light source 10 passes through the HWP 12, the optical expander 14, and the like, to form a polarization splitter. Provided at 16.

그러면 편광 분리기(16)는 레이저광(laser beam)을 신호광(signal beam)과 기준광(reference beam)으로 분리하는 역할을 하는데, 신호광은 그대로 투과시키고 기준광은 반사시켜 두 개의 광 경로로 나눈다. 편광 분리기(16)에서 분리된 신호광은 편광기(18)를 거쳐 반사 미러(20)에 의해 반사되고 반사된 신호광은 마스터링 프로세스(mastering process)용 마스크(34)를 투과하여 소정 패턴으로 변조되어 광 기록매체(32)인 광 디스크에 조사된다.Then, the polarization separator 16 separates a laser beam into a signal beam and a reference beam, and transmits the signal beam as it is and reflects the reference beam into two optical paths. The signal light separated by the polarization separator 16 is reflected by the reflection mirror 20 via the polarizer 18 and the reflected signal light is modulated into a predetermined pattern by passing through the mask 34 for the mastering process. The optical disk serving as the recording medium 32 is irradiated.

그리고 편광 분리기(16)에서 분리된 기준광은 HWP(22), 편광기(24)를 거쳐 반사 미러들(26, 28)에 의해 반사되어 코니컬 미러(30)로 조사된다. 이때 광 기록매체(32)의 상부에는 반사 미러(20)에 의해 반사된 신호광이 입사되며, 광 기록매체(32)의 하부에는 코니컬 미러(30)를 통해 광 기록매체(32) 표면에 모두 동일한 각도로 평행으로 퍼져나온 기준광이 입사된다. 따라서 이들 광 사이의 간섭으로 인해 광 기록매체(32)에는 3차원 홀로그래픽 데이터인 간섭 무늬 패턴이 기록된다. 이후 홀로그래픽 롬 시스템은 장착된 코니컬 미러(30)를 반사각이 다른 코니컬 미러로 교체한 후에 이와 같은 경로로 기준광과 신호광을 제공하여 각도 중첩 방식으로 데이터를 광 기록매체(32)인 광 디스크에 기록한다. The reference light separated by the polarization separator 16 is reflected by the reflection mirrors 26 and 28 via the HWP 22 and the polarizer 24 and irradiated to the conical mirror 30. At this time, the signal light reflected by the reflecting mirror 20 is incident on the upper portion of the optical recording medium 32, and all of the lower surface of the optical recording medium 32 on the surface of the optical recording medium 32 through the conical mirror 30. The reference light spread out in parallel at the same angle is incident. Therefore, the interference fringe pattern, which is three-dimensional holographic data, is recorded on the optical recording medium 32 due to the interference between these lights. Then, the holographic ROM system replaces the mounted conical mirror 30 with conical mirrors having different reflection angles, and then provides the reference light and the signal light through such a path, and transmits data in an angular overlapping manner to the optical disk as the optical recording medium 32. To record.

도 4는 본 발명의 실시 예에 따라 이색성 반사 층(dichroic reflective layer)을 채용한 DVD 호환 홀로그래픽 롬 디스크의 단면을 도시한 것이다.4 illustrates a cross-section of a DVD compatible holographic ROM disc employing a dichroic reflective layer in accordance with an embodiment of the present invention.

상기 도 4에서 보여지는 바와 같이, 본 발명에서는 레이저의 파장에 따라 선택적으로 레이저를 반사시키거나 투과시키는 이색성 반사층(dichroic reflective layer)(400)을 DVD 호환 홀로그래픽 롬 디스크에 구비시켜 홀로그래픽 디스크에 반사층을 포함한 상부 서브스트레이트층(100)을 접착시킨 이후에 홀로그램 데이터 기록을 수행할 수 있도록 함으로써, 디스크 본딩 공정 불량 발생에 따른 선행 공정인 데이터 복제공정의 소모 공정화를 방지하여 홀로그래픽 롬 디스크의 제조 수율을 높일 수 있게 된다.As shown in FIG. 4, in the present invention, a holographic disc is provided with a dichroic reflective layer 400 that selectively reflects or transmits the laser according to the wavelength of the laser. After attaching the upper substrate layer 100 including the reflective layer to the hologram data recording, the holographic ROM disk can be prevented from being consumed by the data copying process, which is a preliminary process due to a bad disc bonding process. It is possible to increase the production yield.

즉, 본 발명에서는 도 5의 (a)에서 보여지는 바와 같이 하부 서브스트레이트층(106, 110)으로 둘러싸인 포토 폴리머층(108) 구조의 홀로그래픽 디스크상에 이색성 반사층(dichroic reflective layer)(400)을 포함하는 상부 서브스트레이트층(100)을 본딩시켜 일체형으로 만든 후, 이색성 반사층(400)을 포함하는 일체형 홀로그래픽 디스크의 데이터 복제를 위해서 532nm의 녹색 레이저(green laser)를 코니컬 미러(200)를 경유하여 각도 중첩기록을 위한 소정의 각도로 디스크에 기준광으로 입사시킨다. That is, in the present invention, as shown in FIG. 5A, a dichroic reflective layer 400 is formed on a holographic disk having a photopolymer layer 108 surrounded by lower substrate layers 106 and 110. After bonding the upper substrate layer (100) including the one-piece to form an integral, a 532nm green laser (condensed green laser) for the data replication of the integrated holographic disk including the dichroic reflective layer (400). Via 200) is incident on the disc as a reference light at a predetermined angle for angular superposition recording.

이때 이색성 반사층(400)은 532nm의 녹색 레이저 파장은 투과시키고 650nm의 적색 레이저(red laser)는 반사시키도록 파장 선택적인 투과와 반사 기능을 갖도록 설계되어 있으므로 532nm 기준광은 이색성 반사층을 투과하여 데이터 기록층인 포토폴리머층(108)으로 입사하게 되고, 이와 동시에 데이터 마스크를 통과하여 신호광을 형성하는 532nm의 녹색 레이저도 데이터 기록층인 포토폴리머층(108)에 입사되어 기준광과 신호광이 동시에 기록층에서 만나 홀로그래피(holography) 원리에 의해서 홀로그램 데이터가 기록되어 도 5의 (b)에서와 같이 DVD 호환 홀로그래픽 롬 디스크를 완성시킬 수 있게 된다.In this case, since the dichroic reflective layer 400 is designed to have a wavelength selective transmission and reflection function to transmit a green laser wavelength of 532 nm and to reflect a red laser of 650 nm, the 532 nm reference light is transmitted through the dichroic reflective layer. A 532 nm green laser which is incident on the photopolymer layer 108 which is a recording layer and simultaneously forms a signal light through the data mask is also incident on the photopolymer layer 108 which is a data recording layer, so that the reference light and the signal light are simultaneously recorded. When the hologram data is recorded by the holography principle, the DVD compatible holographic ROM disc can be completed as shown in FIG.

따라서 위와 같은 각도 중첩을 반복하여 데이터 복제가 끝남과 동시에 홀로그래픽 롬 디스크의 제조가 완료되므로써 종래 디스크 본딩 고정을 포함한 2단계 DVD 호환 홀로그래픽 롬 디스크 제조 공정을 1단계 공정으로 줄일 수 있게 된다.Therefore, by repeating the above-described angular overlap, the data replication is completed and the manufacture of the holographic ROM disk is completed, thereby reducing the process of manufacturing a two-step DVD compatible holographic ROM disk including fixing a conventional disk to a one-step process.

한편, 위와 같이 단일 공정을 통해 제조되는 이색성 반사층을 포함하는 DVD 호환 홀로그래픽 디스크는 DVD 호환 홀로그래픽 롬 재생기에서 재생 될 시에는 532nm의 녹색 레이저를 기준광으로 디스크에 입사시키게 되는데, 이때 녹색 레이저 는 포토폴리머층의 데이터를 재생하고 여분의 기준광은 이색성 반사층을 투과하나, 포커싱 서보(focusing servo)용으로 동시에 입사되는 650nm의 적색 레이저는 이색성 반사층에서 선택적으로 반사되어 포커싱 서보 신호(focusing servo signal)를 발생시킴으로써 원활한 데이터 재생이 가능하게 되는 것이다.Meanwhile, a DVD compatible holographic disc including a dichroic reflective layer manufactured through a single process as described above enters the disc as a reference light with a green laser of 532 nm when played in a DVD compatible holographic ROM player. Reproduce the data of the photopolymer layer and the extra reference light passes through the dichroic reflective layer, but the 650nm red laser, which is incident simultaneously for the focusing servo, is selectively reflected by the dichroic reflective layer to focus the servo signal. ), Smooth data reproduction becomes possible.

상기한 바와 같이 본 발명에서는 DVD 호환 홀로그래픽 롬 디스크 제조 공정에 있어서, DVD 호환 홀로그래픽 디스크에 이색성 반사층을 설치하여 홀로그래픽 디스크상 데이터 복제가 끝남과 동시에 홀로그래픽 롬 디스크의 제조가 완료되도록 함으로써 종래 디스크 본딩 고정을 포함한 2단계 DVD 호환 홀로그래픽 롬 디스크 제조 공정을 1단계 공정으로 줄일 수 있어 디스크 본딩 공정의 불량 발생 시 선행 공정인 데이터 복제 공정의 소모 공정화 되는 것을 방지시켜 홀로그래픽 롬 디스크의 제조 수율을 높일 수 있게 된다.As described above, in the present invention, in the process of manufacturing a DVD-compatible holographic ROM disc, a dichroic reflective layer is provided on the DVD-compatible holographic disc to complete the manufacture of the holographic ROM disc at the same time as the data copying on the holographic disc is completed. The manufacturing process of holographic ROM discs can be reduced by preventing the process of data duplication process, which is a preliminary process, in case of failure of the disc bonding process. Yield can be increased.

한편 상술한 본 발명의 설명에서는 구체적인 실시 예에 관해 설명하였으나, 여러 가지 변형이 본 발명의 범위에서 벗어나지 않고 실시될 수 있다. 따라서 발명의 범위는 설명된 실시 예에 의하여 정할 것이 아니고 특허청구범위에 의해 정하여져야 한다.Meanwhile, in the above description of the present invention, specific embodiments have been described, but various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the invention should be determined by the claims rather than by the described embodiments.

이상에서 설명한 바와 같이, 본 발명에서는 DVD 호환 홀로그래픽 롬 디스크 제조 공정에 있어서, DVD 호환 홀로그래픽 디스크에 이색성 반사층을 설치하여 홀로그래픽 디스크상 데이터 복제가 끝남과 동시에 홀로그래픽 롬 디스크의 제조가 완료되도록 함으로써 종래 디스크 본딩 고정을 포함한 2단계 DVD 호환 홀로그래픽 롬 디스크 제조 공정을 1단계 공정으로 줄일 수 있어 디스크 본딩 공정의 불량 발생 시 선행 공정인 데이터 복제 공정의 소모 공정화 되는 것을 방지시켜 홀로그래픽 롬 디스크의 제조 수율을 높이고, 디스크 제조 경비를 절감시킬 수 있는 이점이 있다.As described above, in the present invention, in the process of manufacturing a DVD-compatible holographic ROM disc, a dichroic reflective layer is provided on the DVD-compatible holographic disc to finish data replication on the holographic disc and to manufacture the holographic ROM disc. By reducing the two-step DVD compatible holographic ROM disk manufacturing process including fixing the conventional disk bonding to one step process, the holographic ROM disk can be prevented from being consumed by the data copying process, which is a preliminary process in the event of a failure of the disk bonding process. There is an advantage that can increase the manufacturing yield of, and reduce the disk manufacturing cost.

Claims (4)

DVD 호환 홀로그래픽 롬 디스크를 효율적으로 제조하는 방법으로서,Efficiently make DVD compatible holographic ROM discs. (a)홀로그램 데이터가 복제될 홀로그래픽 디스크 상부에 이색성 반사층이 포함된 상부 서브스트레이트층을 접합시키는 단계와,(a) bonding an upper substrate layer including a dichroic reflective layer on top of the holographic disk on which the hologram data is to be replicated; (b)코니컬 미러를 이용한 각도 중첩을 반복하여 상기 이색성 반사층이 포함된 홀로그래픽 디스크상에 홀로그램 데이터를 기록시키는 단계(b) repeating angular superposition using a conical mirror to record the hologram data on the holographic disc including the dichroic reflective layer. 를 포함하는 DVD 호환 홀로그래픽 롬 디스크 제조방법.DVD-compatible holographic ROM disk manufacturing method comprising a. 제1항에 있어서,The method of claim 1, 상기 (b)단계에서, 상기 이색성 반사층은, 532nm 파장의 녹색 레이저는 투과시키고, 650nm 파장의 적색 레이저는 반사시키는 것을 특징으로 하는 DVD 호환 홀로그래픽 롬 디스크 제조방법.In the step (b), the dichroic reflective layer, a green laser having a wavelength of 532nm transmits, and a red laser having a wavelength of 650nm reflects a DVD compatible holographic ROM disk manufacturing method. DVD 호환 홀로그래픽 롬 디스크의 효율적 제조가 가능한 디스크 구조로서,Disc structure capable of efficiently producing DVD compatible holographic ROM discs, 하부 서브스트레이트층이 위아래로 도포된 포토폴리머층으로 형성되는 홀로그래픽 디스크층과,A holographic disk layer formed of a photopolymer layer having a lower substrate layer applied up and down, 상기 홀로그래픽 디스크층 상부에 결합을 위해 증착되는 본딩층과,A bonding layer deposited on the holographic disk layer for bonding; 상기 본딩층을 통해 상기 홀로그래픽 디스크층 상부에 접합되는 이색성 반사층을 포함하는 상부 서브스트레이트층An upper substrate layer comprising a dichroic reflective layer bonded over the holographic disk layer through the bonding layer 을 포함하는 DVD 호환 홀로그래픽 디스크 구조.DVD compatible holographic disc structure comprising a. 제3항에 있어서,The method of claim 3, 상기 이색성 반사층은, 532nm 파장의 녹색 레이저는 투과시키고, 650nm 파장의 적색 레이저는 반사시키는 것을 특징으로 하는 DVD 호환 홀로그래픽 디스크 구조.The dichroic reflecting layer transmits a green laser having a wavelength of 532 nm and reflects a red laser having a wavelength of 650 nm.
KR1020040106381A 2004-12-15 2004-12-15 Method for fabricating dvd-compatible holographic rom disk and disk structure thereof KR100694584B1 (en)

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Citations (3)

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Publication number Priority date Publication date Assignee Title
JP2004151698A (en) 2002-10-07 2004-05-27 Tdk Corp Hologram recording medium
JP2004265472A (en) 2003-02-06 2004-09-24 Optware:Kk Optical information recording medium
JP2004279942A (en) 2003-03-18 2004-10-07 Toshiba Corp Optical recording medium

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004151698A (en) 2002-10-07 2004-05-27 Tdk Corp Hologram recording medium
JP2004265472A (en) 2003-02-06 2004-09-24 Optware:Kk Optical information recording medium
JP2004279942A (en) 2003-03-18 2004-10-07 Toshiba Corp Optical recording medium

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