KR19990034027A - Disk structure - Google Patents
Disk structure Download PDFInfo
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- KR19990034027A KR19990034027A KR1019970055490A KR19970055490A KR19990034027A KR 19990034027 A KR19990034027 A KR 19990034027A KR 1019970055490 A KR1019970055490 A KR 1019970055490A KR 19970055490 A KR19970055490 A KR 19970055490A KR 19990034027 A KR19990034027 A KR 19990034027A
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- plate substrate
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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
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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
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B7/0908—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for focusing only
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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
- G11B7/24018—Laminated discs
- G11B7/24027—Layers; Shape, structure or physical properties thereof
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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
- G11B7/2403—Layers; Shape, structure or physical properties thereof
- G11B7/24047—Substrates
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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
- G11B7/241—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
- G11B7/2585—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 based on aluminium
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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
- G11B7/241—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
- G11B2007/25303—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
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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
- G11B7/241—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
- G11B2007/2581—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 based on aluminium
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- 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
- G11B2220/232—Double-sided discs, i.e. two recording layers accessed from opposite sides
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- 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
Abstract
본 발명은 디스크 구조에 관한 것으로, 하층 단판 기판(220), 중앙 단판 기판(200), 및 상측 단판 기판(210)이 접착되어 적층된 3 층 단판 기판 구조를 갖되, 상기 하층 단판 기판(220), 중앙 단판 기판(200), 및 상측 단판 기판(210) 각각은 양면 기록층 구조의 소정 두께를 갖는 초극 박막 기판으로 형성된 것을 특징으로 한다.The present invention relates to a disk structure, and has a three-layered single-board substrate structure in which the lower single-layer substrate 220, the central single-layer substrate 200, and the upper single-layer substrate 210 are bonded and laminated, and the lower single-layer substrate 220 The central single plate substrate 200 and the upper single plate substrate 210 are each formed of an ultra-thin thin film substrate having a predetermined thickness of a double-side recording layer structure.
Description
본 발명은 디스크 구조에 관한 것으로, 특히 양면 기록층 구조를 갖는 단판 기판 3개를 적층시킨 디스크 구조에 관한 것이다.The present invention relates to a disk structure, and more particularly, to a disk structure in which three single-board substrates having a double-sided recording layer structure are laminated.
일반적으로 DVD(Digital versatile Disc) 디스크는 재생 전용형, 추가 기록형, 개서형의 3 종류로 대별되며, 전체적인 제조 공정 면에서는 프리 마스터링(premastering), 마스터링, 레플리케이션(replication)의 3 단계로 나눌수 있다. 여기에서, 프리 마스터링이란 디스크에 기록될 내용(비디오, 오디오, 데이터)을 DVD 사용의 사양에 따라 신호 처리하여 포맷 변화하는 공정을 말하고, 마스터링이란 디스크를 복제하는데 필요한 금형으로 이른바 스탬퍼(stamper)를 제작하는 공정을 말하며, 레플리케이션이란 스탬퍼를 금형으로하여 디스크를 대량으로 복제하는 공정을 말한다.Generally, DVD (Digital versatile Disc) discs are classified into three types: play-only type, additional recording type, and rewritable type. In terms of the overall manufacturing process, three stages of premastering, mastering, and replication are performed. Can be divided into Here, pre-mastering refers to a process of changing the format by signal-processing contents (video, audio, data) to be recorded on a disc according to the specification of DVD use, and mastering is a mold required to duplicate a disc. ) Refers to the process of making a replica, and the replication refers to the process of duplicating a large amount of disk using a stamper as a mold.
한편, 상술한 바와 같은 제조 공정에 의거하여 제작되는 DVD 디스크는 그 구조에 따라 도 1 (a)에 도시된 1층 단면형, 도 1 (b)에 도시된 2층 단면형, 도 1 (c)에 도시된 1층 양면형, 도 1 (d)에 도시된 2층 양면형으로 나눌수 있다.On the other hand, a DVD disc produced on the basis of the manufacturing process as described above has a single layer cross section type shown in Fig. 1 (a), a two layer cross section type shown in Fig. 1 (b) according to its structure, and Fig. 1 (c). It can be divided into the one-layer double-sided type shown in Figure 1, the two-layer double-sided type shown in Figure 1 (d).
1층 단면형의 경우, 기록형 구조를 가지는 기판(12) 한면위에 더미(dummy)기판(10)을 UV(UlitraViolet)에 의해 접착하여 한쪽면에서 광학 렌즈의 픽업이 이루어지도록하여 대략 4.7GB의 용량을 구현한 것이며, 2 층 단면형의 경우, 기록 가능형 기판 구조를 상,하면에 두장을 UV 접착 방식에 의거하여 붙이되 각각의 기록면에 성막되는 형태가 다른 구조를 가지게하여 각각의 반사율차를 이용하여 광학 렌즈가 한측면에서 읽어드리는 것이 가능하도록 구현한 것이다.In the case of the single-layered cross-sectional type, a dummy substrate 10 is bonded by UV (UltraViolet) on one side of the substrate 12 having a recording type structure so that the optical lens can be picked up from one side, so that approximately 4.7GB In the case of the two-layered cross-sectional type, two sheets are attached on the upper and lower surfaces of the recordable substrate structure based on the UV adhesive method, and the film form on each recording surface has a different structure so that each reflectance difference is different. By using the optical lens can be read from one side.
또한, 1층 양면형의 경우, 1층 단면형의 기록형 기판 구조를 갖는 단판 기판두장을 UV접착하여 양측에서 광학 렌즈가 픽업할수 있도록 한 것이며, 2 층 양면형은 우선 하나의 스탬퍼를 이용하여 기록 형상을 가지는 기판을 형성한후 그위에 포토 레지스트(photoresist)를 도포하고, 다른 스탬퍼를 이용하여 또다른 기록 형상을 형성하여, 복층 구조를 갖는 하부의 단판 기판을 형성한다. 또한 상술한 과정에 의거하여 복층 구조를 갖는 상부의 단판 기판을 형성한후 하부의 단판 기판과 상부의 단판 기판을 UV 접착 방식에 의거하여 붙여 제작한다.In addition, in the case of the single-layered double-sided type, two single-sided substrates having a single-sided single-sided recording type substrate structure are UV bonded so that the optical lens can be picked up from both sides. After forming a substrate having a recording shape, a photoresist is applied thereon, and another recording shape is formed using another stamper to form a lower single-plate substrate having a multilayer structure. In addition, the upper end plate substrate having a multilayer structure is formed based on the above-described process, and then the lower end plate substrate and the upper end plate substrate are pasted on the basis of the UV bonding method.
여기에서, 도 1 (b)에 도시된 2층 단면형 디스크와, 도 1 (d)에 도시된 2 층 양면형 디스크의 제조 방법에 대해 보다 상세하게 설명하면 다음과 같다.Here, the manufacturing method of the two-layered single-sided disk shown in FIG. 1 (b) and the two-layered double-sided disk shown in FIG. 1 (d) will be described in more detail.
먼저, 2 층 단면형 디스크의 경우, 프리마스터링과, 마스터링 공정에 의거하여 디스크를 복제하는데 필요한 스탬퍼를 제작한후, 기판 상하면을 형성시켜주는 금형의 고정측과 가동측 경면중 어느 한곳에 해당 스탬퍼를 부착시킨다. 이후, 플라스틱 수지를 용융시켜 사출함으로서, 단면 기록층이 있는 광디스크 기판(21)을 형성하고, 광디스크 기판(21)의 단면 기록층위에 Au와 같은 반투명층(22) 재료를 스퍼터링(sputtering) 기법에 의해 얇게 도포하여 제 1 단판 기판을 제작 한다.First, in the case of a two-layered single-sided disc, a stamper necessary for duplicating the disc based on the premastering and the mastering process is manufactured, and then the stamper is placed on either the fixed side or the movable side of the mold for forming the upper and lower surfaces of the mold. Attach. Thereafter, the plastic resin is melted and injected to form an optical disk substrate 21 having a single-sided recording layer, and a semi-transparent layer 22 material such as Au is sputtered onto the single-sided recording layer of the optical disk substrate 21. It is thinly applied to form a first end plate substrate.
또한, 제 2 단판 기판은 상술한 과정에 의거하여 단면 기록층이 있는 광디스크 기판(23)을 형성한후, 단면 기록층상에 Al과 같은 반사층(24)을 얇게 입혀 제작한다.Further, the second end plate substrate is formed by forming an optical disk substrate 23 having a single-sided recording layer based on the above-described process, and then applying a thin layer of a reflective layer 24 such as Al on the single-sided recording layer.
이와 같이 제 1 단판 기판과 제 2 단판 기판의 제작이 완료되면, 제 1 단판 기판과 제 2 단판 기판을 UV경화시켜 접착층(25)을 형성함으로서, 2 층 단면형 디스크의 제작을 완료한다.When the production of the first single plate substrate and the second single plate substrate is completed in this manner, the first single plate substrate and the second single plate substrate are UV cured to form an adhesive layer 25, thereby completing the production of the two-layered cross-sectional disk.
한편, 2 층 양면형의 경우, 프리마스터링과, 마스터링 공정에 의거하여 디스크를 복제하는데 필요한 제 1 스탬퍼와 제 2 스탬퍼를 제작한후, 기판 상하면을 형성시켜주는 금형의 고정측과 가동측 경면중 어느 한곳에 제 1 스탬퍼를 부착시킨다. 이후, 플라스틱 수지를 용융시켜 사출함으로서, 단면 기록층이 있는 광디스크 기판(41)을 형성하고, 광디스크 기판(41)의 단면 기록층위에 Au와 같은 반투명층(42) 재료를 스퍼터링(sputtering) 기법에 의해 얇게 도포한다. 그런후 반투명층(42) 재료위에 다시 포토 레지스트(43)를 도포하고, 제 2 스탬퍼를 이용하여 포토 레지스트(43)를 소정 형상으로 감광시킨후 그 위에 Al과 같은 반사층(44)을 스퍼터링하여 얇게 입혀 복층 구조의 제 1 단판 기판을 완성하고, 또한 상술한 과정에 의거하여 복층 구조의 제 2 단판 기판을 완성한다.On the other hand, in the case of the two-layer double-sided type, after forming the first stamper and the second stamper required for replicating the disk according to the premastering and mastering process, the fixed side and the movable side mirror surface of the mold forming the upper and lower surfaces of the substrate are formed. The first stamper is attached to any one of them. Thereafter, the plastic resin is melted and injected to form an optical disk substrate 41 having a single-sided recording layer, and a semi-transparent layer 42 material such as Au is sputtered onto the single-sided recording layer of the optical disk substrate 41. Apply thinly. Then, the photoresist 43 is again applied on the semi-transparent layer 42 material, the photoresist 43 is exposed to a predetermined shape by using the second stamper, and then a reflective layer 44 such as Al is sputtered thereon to make it thin. It coats and completes the 1st single board | substrate board | substrate of a multilayer structure, and also completes the 2nd single board | substrate board | substrate of a multilayer structure based on the process mentioned above.
그런후 복층 구조의 제 1 단판 기판과 제 2 단판 기판을 UV경화시켜 UV접착층(45)을 형성함으로서, 2층 양면 구조의 디스크를 제작, 완료한다.Thereafter, the first single plate substrate and the second single plate substrate of the multilayer structure are UV cured to form a UV adhesive layer 45, thereby producing and completing a disk having a two-layer double-sided structure.
여기에서, 특히 도 1 (d)에 도시된 2 층 양면 구조의 디스크의 경우, 비록 용량은 고용량의 형태를 가지나, 제조 공정의 어려움과 복잡성, 또한 생산 수율의 저하 등에 따른 채산성 악화 등의 이유로 인하여 실제 상품화되기는 매우 어려운 문제점이 있다.Here, in particular, in the case of the two-layer double-sided disk shown in Fig. 1 (d), although the capacity is in the form of a high capacity, due to the difficulty of manufacturing process and the deterioration of profitability due to the decrease in production yield, etc. There is a problem that is very difficult to commercialize.
따라서, 본 발명은 양면 기록층 구조를 갖는 단판 기판을 3층으로 적층하여 고밀도의 용량을 가지면서도, 보다 용이하고 쉽게 제조할수 있는 디스크 구조를 제공함에 그 목적이 있다.Accordingly, an object of the present invention is to provide a disk structure that can be easily and easily manufactured while having a high density of capacity by stacking single-layer substrates having a double-sided recording layer structure in three layers.
본 발명은 상기 목적을 달성하기 위하여, 디스크 구조에 있어서; 하층 단판 기판, 중앙 단판 기판, 및 상측 단판 기판이 접착되어 적층된 3 층 단판 기판 구조를 갖되, 상기 하층 단판 기판, 중앙 단판 기판, 및 상측 단판 기판 각각은 양면 기록층 구조의 소정 두께를 갖는 초극 박막 기판으로 형성된것을 특징으로 한다.The present invention provides a disk structure for achieving the above object; A lower monolayer substrate, a central monolayer substrate, and a three-layer monolayer substrate structure in which an upper monolayer substrate is bonded and laminated, wherein each of the lower monolayer substrate, the central monolayer substrate, and the upper monolayer substrate have a predetermined thickness of a double-side recording layer structure. Characterized in that formed of a thin film substrate.
도 1 은 종래 기술의 디스크 구조를 나타낸 도면,1 is a view showing a disk structure of the prior art,
도 2 는 본 발명의 바람직한 실시예에 따른 디스크 구조를 나타낸 도면.2 illustrates a disk structure according to a preferred embodiment of the present invention.
<도면의 주요부분에 대한 부호의 설명><Description of Symbols for Main Parts of Drawings>
200 ; 중앙 단판 기판 210 ; 상측 단판 기판200; Central single plate substrate 210; Upper single board
220 ; 하측 단판 기판220; Lower single board
이하, 첨부된 도면을 참조하여 본 발명을 상세히 설명한다.Hereinafter, with reference to the accompanying drawings will be described in detail the present invention.
도 2 에는 본 발명의 바람직한 실시예에 따른 디스크의 구조가 도시된다.2 shows the structure of a disc according to a preferred embodiment of the present invention.
도 2 에 도시된바와 같이 본 발명의 바람직한 실시예에 따른 디스크는 3 층 단판 기판 구조를 갖되, 각 단판 기판(200,210,220)이 양면 기록층 구조를 가지며, 또한 각 단판 기판(200,210,220)은 소정 두께의 초극 박막 기판, 바람직하기로는 0.2㎜ 내지 0.5㎜의 두께를 갖는 기판으로 형성된다.As shown in FIG. 2, a disc according to a preferred embodiment of the present invention has a three-layer single-layer substrate structure, wherein each single-plate substrate 200, 210, 220 has a double-sided recording layer structure, and each single-plate substrate 200, 210, 220 has a predetermined thickness. It is formed of an ultra-thin thin film substrate, preferably a substrate having a thickness of 0.2 mm to 0.5 mm.
여기에서, 상측 단판 기판(210)은 디스크의 내주부측에 위치한 소정 크기의 기판과 일체형으로 형성된 돌출환(211)과, 양면 기록층 구조를 갖는 광디스크 기판(212), 광디스크 기판(212)의 양면 기록층상에 각각 도포된 제 1 및 제 2 반투명 반사층(213,214), 및 보호층(215)으로 구성되며, 하측 단판 기판(220)은 디스크의 내주부측에 위치한 소정 크기의 기판과 일체형으로 형성된 돌출환(221)과, 양면 기록층 구조를 갖는 광디스크 기판(222), 광디스크 기판(222)의 양면 기록층상에 각각 도포된 제 1 및 제 2 반투명 반사층(223,224), 및 보호층(225)으로 구성된다.Here, the upper end plate substrate 210 of the optical disk substrate 212 and the optical disk substrate 212 having the projecting ring 211 formed integrally with the substrate having a predetermined size located on the inner peripheral side of the disk, and having a double-sided recording layer structure. The first and second translucent reflective layers 213 and 214 and the protective layer 215 are respectively applied on the double-sided recording layer, and the lower end plate substrate 220 is formed integrally with a substrate having a predetermined size located on the inner circumferential side of the disc. With a protruding ring 221, an optical disk substrate 222 having a double-sided recording layer structure, first and second translucent reflective layers 223, 224 and a protective layer 225 respectively applied on the double-sided recording layer of the optical disk substrate 222. It is composed.
또한 중앙 단판 기판(200)은 양면 기록층 구조를 갖는 광디스크 기판(201), 광디스크 기판(201)의 양면 기록층상에 각각 도포된 제 1 및 제 2 반사층(202,203)으로 구성되며, 각 단판 기판 사이(상측 단판 기판(210)과 중앙 단판 기판(200)의 일측면 사이, 하측 단판 기판(220)과 중앙 단판 기판(200)의 타측면 사이)에는 UV 수지층(230,240)이 각각 형성된다.In addition, the central single-plate substrate 200 is composed of an optical disk substrate 201 having a double-sided recording layer structure, and first and second reflective layers 202 and 203 applied on the double-sided recording layer of the optical disk substrate 201, respectively. UV resin layers 230 and 240 are formed on the upper end plate substrate 210 and one side surface of the central end plate substrate 200, and between the lower end plate substrate 220 and the other side surface of the central end plate substrate 200, respectively.
이때, 상술한 돌출환(211,221)은 광학 렌즈의 픽업 위치 차이에 의해 발생되는 포커싱(focusing) 불안정을 보상하기 위해 구성된 것이다. 즉, 광학 렌즈의 픽업 위치 차이에 의해 포커싱 불안정이 발생하고, 이에 따라 디스크의 내주부에 기판과 일체형으로 형성된 돌출환(211,221)을 형성하여 광학 렌즈의 픽업 위치를 제어할수 있도록 한 것이다. 또한 상측 단판 기판(210)의 제 1 반투명 반사층(213)과 제 2 반투명 반사층(214)는 서로 다른 반사율을 가지며, 하측 단판 기판(220)의 제 1 반투명 반사층(223)과 제 2 반투명 반사층(224)도 서로 다른 반사율을 가진다.In this case, the above-described protruding rings 211 and 221 are configured to compensate for focusing instability caused by the difference in pickup position of the optical lens. That is, the focusing instability occurs due to the difference in pick-up position of the optical lens, and accordingly, protrusion rings 211 and 221 formed integrally with the substrate are formed in the inner circumference of the disc to control the pick-up position of the optical lens. In addition, the first semi-transparent reflective layer 213 and the second semi-transparent reflective layer 214 of the upper single plate substrate 210 have different reflectances, and the first semi-transparent reflective layer 223 and the second semi-transparent reflective layer of the lower single plate substrate 220 ( 224 also has different reflectances.
이와 같은 구조로된 본 발명의 실시예에 따른 디스크는 도 2 에 도시된 바와 같이 상,하 양면에서 정보를 읽을수 있으며, 또한 상, 하 양면 모두에서 각각 반사율의 차이를 이용하여 정보를 읽을수 있다.The disk according to the embodiment of the present invention having such a structure can read information from both the upper and lower sides as shown in FIG. 2, and can also read the information using the difference in reflectance on both the upper and lower sides.
도 2 에 도시된 바와 같은 구조의 디스크를 제조하기 위한 공정 과정은 다음과 같다.The process for producing the disk of the structure as shown in Figure 2 is as follows.
먼저, 프리마스터링과, 마스터링 공정에 의거하여 디스크를 복제하는데 필요한 제 1 스탬퍼와 제 2 스탬퍼를 제작한후, 기판 상하면을 형성시켜주는 금형의 고정측과 가동측 양측에 일대일 대응되게 제 1 스탬퍼 및 제 2 스탬퍼를 부착시킨다. 이후, 플라스틱 수지를 용융시켜 사출함으로서, 양면 기록층을 갖는 광디스크 기판(201)을 형성하고, 광디스크 기판(201)의 양면 기록층에 각각 Al과 같은 제 1 및 제 2 반사층(202,203) 재료를 스퍼터링 기법에 의해 얇게 도포하여, 중앙 단판 기판(200)을 형성한다.First, the first stamper and the second stamper are required for copying the disk based on the premastering and mastering process, and then the first stamper is one-to-one correspondence to both sides of the mold and the movable side of the mold forming the upper and lower surfaces of the substrate. And a second stamper. Thereafter, the plastic resin is melted and injected to form an optical disc substrate 201 having a double-sided recording layer, and sputtering first and second reflective layers 202 and 203 such as Al on the double-sided recording layer of the optical disc substrate 201, respectively. The thin coating is applied by the technique to form the central end plate substrate 200.
한편, 상측 단판 기판(210)의 경우, 기판 상하면을 형성시켜주는 금형의 고정측과 가동측에 각각 제 3 및 제 4 스탬퍼를 부착시킨후, 플라스틱 수지를 용융시켜 사출함으로서, 양면 기록층이 있는 광디스크 기판(212) 및 돌출환(211)을 일체로 형성하고, 광디스크 기판(212)의 양면 기록층위에 반사율이 서로 다른 제 1 및 제 2 반투명 반사층(213,214) 재료를 스퍼터링 기법에 의해 얇게 도포한다. 그런후 제 1 반투명 반사층(213)상에 보호층(215)을 형성한다.On the other hand, in the case of the upper end plate substrate 210, after attaching the third and fourth stampers to the stationary side and the movable side of the mold for forming the upper and lower surfaces of the substrate, respectively, the plastic resin is melted and injected, thereby providing a double-side recording layer. The optical disk substrate 212 and the protruding ring 211 are integrally formed, and the first and second translucent reflective layers 213 and 214 having different reflectances are applied on the double-sided recording layer of the optical disk substrate 212 by a sputtering technique. . A protective layer 215 is then formed on the first translucent reflective layer 213.
또한, 하측 단판 기판(220)의 경우에도 상측 단판 기판(210)과 마찬가지로, 기판 상하면을 형성시켜주는 금형의 고정측과 가동측에 각각 제 5 및 제 6 스탬퍼를 부착시킨후, 플라스틱 수지를 용융시켜 사출함으로서, 양면 기록층이 있는 광디스크 기판(222) 및 돌출환(221)을 일체로 형성하고, 광디스크 기판(222)의 양면 기록층위에 반사율이 서로 다른 제 1 및 제 2 반투명 반사층(223,224) 재료를 스퍼터링 기법에 의해 얇게 도포한다. 그런후 제 1 반투명 반사층(223)상에 보호층(225)을 형성한다.Also, in the case of the lower end plate substrate 220, similarly to the upper end plate substrate 210, the fifth and sixth stampers are attached to the stationary side and the movable side of the mold for forming the upper and lower substrates, respectively, and then the plastic resin is melted. The optical disk substrate 222 and the protruding ring 221 having the double-sided recording layer are integrally formed, and the first and second translucent reflective layers 223 and 224 having different reflectances are formed on the double-sided recording layer of the optical disk substrate 222. The material is applied thinly by the sputtering technique. A protective layer 225 is then formed on the first translucent reflective layer 223.
이와 같은 과정에 의거하여, 중앙 단판 기판(200), 상측 단판 기판(210) 및, 하측 단판 기판(220)을 완성한후, 상측 단판 기판(210)의 제 2 반투명 반사층(214)과, 중앙 단판 기판(200)의 제 1 반사층(202)간을 UV경화시켜 접착함으로서, UV 수지층(230)을 형성하고, 하측 단판 기판(220)의 제 2 반투명 반사층(224)층과 중앙 단판 기판(200)의 제 2 반사층(203)간을 UV경화시켜 접착함으로서, UV 수지층(240)을 형성하여 도 2 와 같은 디스크를 완성한다.Based on this process, after completing the central end plate substrate 200, the upper end plate substrate 210, and the lower end plate substrate 220, the second semi-transparent reflective layer 214 and the center end plate of the upper end plate substrate 210 are completed. By UV-curing and bonding between the 1st reflective layers 202 of the board | substrate 200, the UV resin layer 230 is formed, and the 2nd semi-transparent reflecting layer 224 layer of the lower single board | substrate 220 and the center single board | substrate 200 UV-curing the second reflective layer 203 between the) to form a UV resin layer 240 to complete the disk as shown in FIG.
이와 같은 본원 발명은 양면 기록층 구조를 갖는 단판 기판을 3층으로 적층하여 고밀도의 용량을 가지면서도, 보다 용이하고 쉽게 제조할수 있는 효과가 있다.The present invention as described above has a high density capacity by stacking single-layer substrates having a double-sided recording layer structure in three layers, and has an effect that can be easily and easily manufactured.
Claims (15)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019970055490A KR100311146B1 (en) | 1997-10-28 | 1997-10-28 | Disk structure |
| US09/176,921 US6063469A (en) | 1997-10-28 | 1998-10-22 | Triple substrate optical disk and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019970055490A KR100311146B1 (en) | 1997-10-28 | 1997-10-28 | Disk structure |
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| Publication Number | Publication Date |
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| KR19990034027A true KR19990034027A (en) | 1999-05-15 |
| KR100311146B1 KR100311146B1 (en) | 2001-12-17 |
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| KR1019970055490A KR100311146B1 (en) | 1997-10-28 | 1997-10-28 | Disk structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100509621B1 (en) * | 2001-05-14 | 2005-08-22 | 샤프 가부시키가이샤 | Optical information recording medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| NL7803069A (en) * | 1978-03-22 | 1979-09-25 | Philips Nv | MULTI-LAYER INFORMATION DISK. |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100509621B1 (en) * | 2001-05-14 | 2005-08-22 | 샤프 가부시키가이샤 | Optical information recording medium |
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