KR960019151A - Multi-layer optical recording medium and manufacturing method - Google Patents

Multi-layer optical recording medium and manufacturing method Download PDF

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Publication number
KR960019151A
KR960019151A KR1019940029604A KR19940029604A KR960019151A KR 960019151 A KR960019151 A KR 960019151A KR 1019940029604 A KR1019940029604 A KR 1019940029604A KR 19940029604 A KR19940029604 A KR 19940029604A KR 960019151 A KR960019151 A KR 960019151A
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South Korea
Prior art keywords
transparent substrate
recorded
optical information
reflecting
film
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KR1019940029604A
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Korean (ko)
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KR0141181B1 (en
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신세균
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김광호
삼성전자 주식회사
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Publication of KR960019151A publication Critical patent/KR960019151A/en
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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
    • G11B7/24035—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
    • G11B7/24047—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
    • G11B7/24062—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
    • 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

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  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

다층 광 기록 매체 및 제조방법이 개시되어 있다. 다층 광 정보 기록 장치에 있어서, 서로 다른 광학적 반사 특성을 가지며 광학적으로 판독 가능한 정보를 포함하는 다수개의 반사층들 중 기판에 가까운 제1반사층이 고굴절율 및 저흡수율의 유전체로 형성된 것을 특징으로 하는 다층 광 기록 장치를 제공한다.A multilayer optical recording medium and a manufacturing method are disclosed. A multi-layered optical information recording apparatus, wherein a first reflective layer close to a substrate is formed of a dielectric having high refractive index and low absorption rate among a plurality of reflective layers having different optical reflection characteristics and containing optically readable information. A recording device is provided.

본 발명에 의하면, 고굴절율 및 저흡수율의 유전체를 제1반사막으로 사용함으로써, 제1반사막의 반사율이 향상되고 구조가 간단하여 제조가 용이하며, 정보 저장 용량의 증가된 광 디스크를 얻을 수 있다.According to the present invention, by using a dielectric having high refractive index and low absorption factor as the first reflecting film, the reflectance of the first reflecting film is improved, the structure is simple, manufacturing is easy, and an optical disk with increased information storage capacity can be obtained.

Description

다층 광 기록 매체 및 제조방법Multi-layer optical recording medium and manufacturing method

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제4도는 본 발명에 의한 광 디스크 구조의 제1실시예를 도시한 개략도,4 is a schematic diagram showing a first embodiment of an optical disk structure according to the present invention;

제5도는 본 발명의 이해를 돕기 위한 적층 구조를 도시한 단면도,Figure 5 is a cross-sectional view showing a laminated structure to help the understanding of the present invention,

제6도는 본 발명에 의한 광 디스크 구조의 제2실시예를 도시한 개략도.6 is a schematic diagram showing a second embodiment of the optical disk structure according to the present invention.

Claims (11)

다층 광 정보 기록 매체에 있어서, 서로 다른 광학적 반사 특성을 가지며 광학적으로 판독 가능한 정보를 포함하는 다수개의 반사층들 중 광입사면에 가깝고, 입사광중 일부는 투과하고 나머지 일부는 반사하는 제1반사막이 고굴절율 및 저흡수율의 유전체로 형성된 것을 특징으로 하는 다층 광 기록 매체.In a multi-layer optical information recording medium, a first reflecting film which is close to a light incidence surface among a plurality of reflecting layers having different optical reflecting characteristics and containing optically readable information, and which transmits some of the incident light and reflects the other part, A multilayer optical recording medium characterized by being formed of a dielectric having a refractive index and a low absorption rate. 제1항에 있어서, 상기 제1반사층은 상부층과의 굴절율차가 0.88보다 큰 유전체로 형성된 것을 특징으로 하는 다층 광 기록 매체.The multilayer optical recording medium according to claim 1, wherein the first reflection layer is formed of a dielectric having a refractive index difference greater than 0.88 from that of the upper layer. 제1항에 있어서, 상기 제1반사층은 실리콘질화물(SiN), 이산화티탄(TiO2), 탄화규소(SiC), 황화아연(ZnS), 비정질-실리콘(a-Si), 인화갈륨(GaP), 이산화지르코늄(ZrO2), 오산화탄탄륨(Ta2O5), 셀렌화아연(ZnSe)의 군에서 선택된 어느 하나로 형성하는 것을 특징으로 하는 다층 광 기록 매체.The method of claim 1, wherein the first reflection layer is silicon nitride (SiN), titanium dioxide (TiO 2 ), silicon carbide (SiC), zinc sulfide (ZnS), amorphous silicon (a-Si), gallium phosphide (GaP) And zirconium dioxide (ZrO 2 ), tantalum pentoxide (Ta 2 O 5 ), or zinc selenide (ZnSe). 광 입사면의 반대면에 제1광정보가 기록되는 기록면을 가지는 제1투명기판; 상기 제1투명기판의 기록면에 형성되고, 입사광중 일부는 투과하고 나머지 일부는 반사하는 제1반사막; 상기 제1투명기판과 마주보는 면에 제2광정보가 기록되는 제2투명기판; 상기 제2투명기판의 기록면상에 형성되어 상기 제1반사막을 투과한 광을 반사하는 제2반사막; 및 상기 제1투명기판과 제2투명기판 사이의 간격을 소정간격으로 유지하는 스페이서를 구비하는 것을 특징으로 하는 다층 광 기록 매체.A first transparent substrate having a recording surface on which the first optical information is recorded on the opposite side of the light incident surface; A first reflection film formed on the recording surface of the first transparent substrate and transmitting some of the incident light and reflecting the other of the incident light; A second transparent substrate having second optical information recorded on a surface facing the first transparent substrate; A second reflection film formed on the recording surface of the second transparent substrate and reflecting light transmitted through the first reflection film; And a spacer for maintaining a gap between the first transparent substrate and the second transparent substrate at a predetermined interval. 제4항에 있어서, 상기 제1반사막은 고굴절율 및 제흡수율의 재료로 형성된 것을 특징으로 하는 다층 광 기록 매체.The multilayer optical recording medium according to claim 4, wherein the first reflecting film is formed of a material having a high refractive index and a water absorption rate. 제4항에 있어서, 상기 제1투명기판 및 제2투명기판의 두께가 1.2㎜인 것을 특징으로 하는 다층 광 기록 매체.The multilayer optical recording medium according to claim 4, wherein the thickness of the first transparent substrate and the second transparent substrate is 1.2 mm. 제4항에 있어서, 상기 제1투명기판 및 제2투명기판의 간격이 0.1㎜인 것을 특징으로 하는 다층 광 기록 매체.The multilayer optical recording medium according to claim 4, wherein a distance between the first transparent substrate and the second transparent substrate is 0.1 mm. 광 입사면의 반대면에 제1광정보가 기록되는 기록면을 가지는 투명기판; 상기 투명기판의 기록면에 형성되고, 입사광중 일부는 투과하고 나머지 일부는 반사하며, 고굴절율 및 저흡수율의 재료로 형성된 제1반사막; 상기 제1반사막 상에 형성되고, 상부에 제2광정보가 기록되는 기록면을 가지는 투명접착층; 상기 투명접착층의 기록면 상에 형성되어 상기 제1반사막을 투과한 빛을 반사하는 제2반사막; 및 상기 제2반사막의 상부에 형성되는 보호막을 구비하는 것을 특징으로 하는 다층 광 기록 매체.A transparent substrate having a recording surface on which the first optical information is recorded on an opposite surface to the light incident surface; A first reflecting film formed on the recording surface of the transparent substrate, the first reflecting film being formed of a material having a high refractive index and a low absorptivity for transmitting part of the incident light and reflecting the other part; A transparent adhesive layer formed on the first reflective film and having a recording surface on which second optical information is recorded; A second reflection film formed on the recording surface of the transparent adhesive layer to reflect light transmitted through the first reflection film; And a protective film formed over the second reflecting film. 광 입사면의 반대면에 제1광정보가 기록되는 기록면을 가지는 투명기판; 상기 투명기판의 기록면에 형성되고, 입사광중 일부는 투과하고 나머지 일부는 반사하며, 고굴절율 및 저흡수율의 재료로 형성된 제1반사막; 상기 제1반사막 상에 형성되고, 상부에 제2광정보가 기록되는 기록면을 가지는 제1투명접착층; 상기 제1투명접착층의 기록면에 형성되고, 상기 제1반사막을 투과한 빛의 일부는 투과하고 나머지 일부는 반사하는 제2반사막; 상기 제2반사막 상에 형성되고, 상부에 제3광정보가 기록되는 기록면을 가지는 제2투명접착층; 상기 제2투명접착층의 기록면 상에 형성되어 상기 제2반사막을 투과한 빛을 반사하는 제3반사막; 및 상기 제3반사막의 상부에 형성되는 보호막을 구비하는 것을 특징으로 하는 다층 광 기록 매체.A transparent substrate having a recording surface on which the first optical information is recorded on an opposite surface to the light incident surface; A first reflecting film formed on the recording surface of the transparent substrate, the first reflecting film being formed of a material having a high refractive index and a low absorptivity and transmitting some of the incident light and reflecting the other part; A first transparent adhesive layer formed on the first reflective film and having a recording surface on which second light information is recorded; A second reflection film formed on the recording surface of the first transparent adhesive layer, the second reflection film transmitting part of light passing through the first reflection film and reflecting a part of the remaining light; A second transparent adhesive layer formed on the second reflective film and having a recording surface on which third optical information is recorded; A third reflection film formed on the recording surface of the second transparent adhesive layer to reflect light transmitted through the second reflection film; And a protective film formed over the third reflecting film. 제1광정보가 기록되어 있는 제1스탬퍼를 사용하여 제1투명기판에 제1광정보를 기록하는 단계; 제1광정보가 기록되어 있는 상기 제1투명기판 상에 제1반사막을 형성하는 단계; 제2광정보가 기록되어 있는 제2스탬퍼를 사용하여 제2투명기판에 제2광정보를 기록하는 단계; 제2광정보가 기록되어 있는 상기 제2투명기판 상에 제2반사막을 형성하는 단계; 및 상기 제1투명기판과 제2투명기판을 소정 간격으로 이격시키는 스페이서를 사용하여 상기 제2투명기판과 상기 제2투명기판을 접착시키는 단계를 구비하는 것을 특징으로 하는 다층 광 기록 매체 제조방법.Recording the first optical information on the first transparent substrate by using the first stamper on which the first optical information is recorded; Forming a first reflective film on the first transparent substrate on which first optical information is recorded; Recording the second optical information on the second transparent substrate by using a second stamper on which the second optical information is recorded; Forming a second reflective film on the second transparent substrate on which second light information is recorded; And bonding the second transparent substrate and the second transparent substrate using spacers spaced apart from the first transparent substrate and the second transparent substrate at predetermined intervals. 제1광정보가 기록되어 있는 제1스탬퍼를 사용하여 투명기판에 제1광정보를 기록하는 단계; 제1광정보가 기록되어 있는 상기 투명기판 상에 제1반사막을 형성하는 단계; 상기 제1반사막 상에 투명접착층을 형성하는 단계; 제2광정보가 기록되어 있는 제2스탬퍼를 사용하여 상기 툼여접착층 상에 제2광정보를 기록하는 단계; 제2광정보가 기록되어 있는 상기 투명접착층 상에 제2반사막을 형성하는 단계; 및 상기 제2반사막 상에 보호막을 형성하는 단계를 구비하는 것을 특징으로 하는 다층 광 기록 매체 제조방법.Recording the first optical information on the transparent substrate by using the first stamper on which the first optical information is recorded; Forming a first reflective film on the transparent substrate on which first optical information is recorded; Forming a transparent adhesive layer on the first reflective film; Recording second optical information on the tomb adhesive layer by using a second stamper on which second optical information is recorded; Forming a second reflective film on the transparent adhesive layer on which second light information is recorded; And forming a protective film on the second reflecting film. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940029604A 1994-11-11 1994-11-11 Multilayer optical recording medium and its manufacturing method KR0141181B1 (en)

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KR0141181B1 KR0141181B1 (en) 1998-07-15

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6379767B1 (en) 1998-04-28 2002-04-30 Lg Electronics Inc. Optical recording medium with multiple recording layers and fabricating method thereof
KR100334569B1 (en) * 1998-04-28 2002-06-20 구자홍 Optical Recording Media With Multiple Layer And Fabricating Method thereof
KR100332054B1 (en) * 1998-05-30 2002-10-19 엘지전자주식회사 Optical Recording Media With Multiple Layers And Fabricating Method thereof
KR100708104B1 (en) * 2000-10-28 2007-04-16 삼성전자주식회사 High density optical disk

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100554070B1 (en) * 1999-02-10 2006-02-22 삼성전자주식회사 High-density optical storage medium
JP2002056574A (en) * 2000-08-04 2002-02-22 Pioneer Electronic Corp Optical recording medium

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6379767B1 (en) 1998-04-28 2002-04-30 Lg Electronics Inc. Optical recording medium with multiple recording layers and fabricating method thereof
KR100334569B1 (en) * 1998-04-28 2002-06-20 구자홍 Optical Recording Media With Multiple Layer And Fabricating Method thereof
KR100332054B1 (en) * 1998-05-30 2002-10-19 엘지전자주식회사 Optical Recording Media With Multiple Layers And Fabricating Method thereof
KR100708104B1 (en) * 2000-10-28 2007-04-16 삼성전자주식회사 High density optical disk

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