KR960700507A - 광기록매체 및 그 제조법(Optical Recording Medium and Its Making Method) - Google Patents

광기록매체 및 그 제조법(Optical Recording Medium and Its Making Method)

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KR960700507A
KR960700507A KR1019950702145A KR19950702145A KR960700507A KR 960700507 A KR960700507 A KR 960700507A KR 1019950702145 A KR1019950702145 A KR 1019950702145A KR 19950702145 A KR19950702145 A KR 19950702145A KR 960700507 A KR960700507 A KR 960700507A
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recording medium
optical recording
dielectric layer
sio
layer
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KR100364506B1 (ko
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토시히사 노나카
겐타로오 오오바야시
쿠사토 히로타
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마에다 카쯔노수케
토오레 카부시키가이샤
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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
    • G11B7/257—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 having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers
    • G11B7/2578—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 having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of inorganic materials
    • 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
    • G11B7/257—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 having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the 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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/0045—Recording
    • G11B7/00454—Recording involving phase-change effects
    • 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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/0055—Erasing
    • G11B7/00557—Erasing involving phase-change media
    • 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
    • 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
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative 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
    • G11B7/26—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
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
    • G11B2007/24302—Metals or metalloids
    • G11B2007/24312—Metals or metalloids group 14 elements (e.g. Si, Ge, Sn)
    • 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
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
    • G11B2007/24302—Metals or metalloids
    • G11B2007/24314—Metals or metalloids group 15 elements (e.g. Sb, Bi)
    • 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
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
    • G11B2007/24302—Metals or metalloids
    • G11B2007/24316—Metals or metalloids group 16 elements (i.e. chalcogenides, Se, Te)
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
    • Y10S430/146—Laser beam

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)

Abstract

기판상에 형성된 기록층으로 빛을 조사하므로서, 정보의 기록, 소거, 재생이 가능하며 정보의 기록 및 소거가 비정질상과 결정질상 사이의 양상변화에 의하여 실시되는 광기록매체에 있어서, 상기한 광기록매체가 투명기판상으로 적어도 제1유전체층, 기록층, 제2유전체층 및 반사층을 이 순서로 적층된 구조를 보유하며, 그 제2유전체층이 투명하지 않는 광기록매체이다.
낮은 파워에서 기록을 소거할 수 있다. 다수회의 기록소거를 반복하여도 동작이 안정되어 있고, 특성의 열화가 거의 없다. 내습열성, 내산화성에 우수하며 수명이 길다.

Description

광기록매체 및 그 제조법(Optical Recording Medium and Its Making Method)
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (26)

  1. 기간상에 형성된 기록층으로 빛을 조사하므로서, 정보의 기록, 소거가 비정질상과 결정질상 사이의 양상변화에 의하여 실시되는 광기록매체에 있어서, 상기한 광기록매체가 투명기간상으로 적어도 제1유전체층, 기록층, 제2유전체층 및 반사층을 이 순서로 적층된 구조를 보유하며, 그 제2유전체층이 투명하지 않는 것을 특징으로 하는 광기록매체.
  2. 제1항에 있어서, 제2유전체층의 굴절률의 허수부를 k로 할 때 k가 0을 초과하는 값인 것을 특징으로 하는 광기록매체.
  3. 제2항에 있어서, k가 0.01k1.0인 것을 특징으로 하는 광기록매체.
  4. 제3항에 있어서, k가 0.01k0.3인 것을 특징으로 하는 광기록매체.
  5. 제1항에 있어서, 제1유전체층의 두께 d1이 50nmd1400n, 인 것을 특징으로 하는 광기록매체.
  6. 제1항에 있어서, 제1유전체층의 두께 d1이 기록, 재생에 사용하는 빛의 파장(λ)에 대하여 0.25λ/nd10.70λ/n(여기서, n은 자연수를 표시한다)인 것을 특징으로 하는 광기록매체.
  7. 제1항에 있어서, 제2유전체층의 두께 d2이 30nmd260nm인 것을 특징으로 하는 광기록매체.
  8. 제1항에 있어서, 제1유전체층이 적어도 ZnS와 SiO2를 함유하는 혼합막인 것을 특징으로 하는 광기록매체.
  9. 제1항에 있어서, 제2유전체층이 적어도 ZnS와 SiO2및 C를 구성재료로서 함유하는 혼합막인 것을 특징으로 하는 광기록매체.
  10. 제9항에 있어서, 제2유전체층속의 ZnS와 SiO2의 몰비가 ZnS/SiO2=85/15∼65/35이고, (ZnS+SiO2)와 C의 몰비가 (ZnS+SiO2)/C=95/5∼80/20인 것을 특징으로 하는 광기록매체.
  11. 제1항에 있어서, 기록층이 구성원소로서 적어도 Ge, Sb, Te의 3원소를 적어도 함유하는 합금으로 구성되는 것을 특징으로 하는 광기록매체.
  12. 기판상에 형성된 기록층으로 빛을 조사하므로서, 정보의 기록, 소거, 재생이 가능하며 정보의 기록 및 소거가 비정질상과 결정질상 사이의 양상변화에 의하여 실시되는 광기록매체에 있어서, 상기한 광기록매체가 투명기판상으로, 적어도 제1유전체층, 기록층, 제2유전체층 및 반사층을 이 순서로 적층된 구조를 보유하며,그 제2유전체층이 굴절률의 허수부를 k로 할 때, k가 0.1 이상인 물질을 필수성분으로서 함유하는 것을 특징으로 하는 광기록매체.
  13. 기판상에 형성된 기록층으로 빛을-조사하므로서, 정보의 기록 및 소거가 비정질상과 결정질상 사이의 양상변화에 의하여 실시되는 광기록매체에 있어서, 상기한 광기록매체가 적어도 투명기판, 제1유전체층, 기록층, 제2유전체층 및 반사층을 이 순서로 적층된 구조를 보유하고, 제2유전체층의 두께가 30nm이상 60nm이하인 것을 특징으로 하는 광기록매체.
  14. 제13항에 있어서, 반사층의 두께가 50nm 이상 100nm 이하인 것을 특징으로 하는 광기록매체.
  15. 제13항에 있어서, 기록층의 두께가 10nm 이상 40nm 이하인 것을 특징으로 하는 광기록매체.
  16. 제13항에 있어서, 기록, 재생에 사용하는 빛의 파장을 λ, 제1유전체층의 두께 d1, 굴절률(실부)을 n1,기록층의 두께를 dr, 제2유전체층의 두께를 d2, 굴절률(실부)을 n2, 반사층의 두께를 df로 할 때, 다음식 0.25λ/nd10.70λ/n, 10dr40(단위 ㎚), 10d260(단위 nm), 50df100, 2n12.5, 2n22.5를 만족하도록 층두께가 설정되고, 또한 반사층의 재질의 주성분이 알루미늄합금인 것을 특징으로 하는 광기록매체.
  17. 제13항에 있어서, 제1유전체층의 두께(dl)가 50nmd1400nm인 것을 특징으로 하는 광기록매체.
  18. 제13항에 있어서, 제1유전체층의 두께(d1)가 기록, 재생에 사용하는 광파장(λ)에 대하여 0.25λ/nd10.70λ/n(여기서, n은 자연수를 표시한다)인 것을 특징으로 하는 광기록매체.
  19. 제13항에 있어서, 제1유전체층이 적어도 ZnS와 SiO2를 함유하는 혼합막인 것을 특징으로 하는 광기록매체.
  20. 제13항에 있어서, 제2유전체층이 적어도 ZnS와 SiO2및 C를 구성재료로서 함유하는 혼합막인 것을 특징으로 하는 광기록매체.
  21. 제20항에있어서, 제2유전체층속의 ZnS와 SiO2의 몰비가 ZnS/SiO2=85/15∼65/35이고, (ZnS+SiO2)와 C의 몰비가 (ZnS+SiO2)/C=95/5∼80/20인 것을 특징으로 하는 광기록매체.
  22. 제13항에 있어서, 기록층이 구성원소로서 적어도 Ge, Sb, Te의 3원소를 적어도 함유하는 합금으로 구성되는 것을 특징으로 하는 광기록매체.
  23. 제13항에 있어서. 제2유전체층이 적어도 ZnS와 SiO2의 혼합막 및 SiO2의 혼합막 및 SiO2막의 적층으로 구성되는 것을 특징으로 하는 광기록매체.
  24. 제23항에 있어서, ZnS와 SiO2의 혼합막의 두께가 2nm 이상 10nm 이하이고, SiO2막의 두께가 30nm이상인 것을 특징으로 하는 광기록매체.
  25. 제13항에 있어서, 기록층이 구성원소로서 적어도 Ge, Sb, Te의 3원소를 적어도 함유하는 합금으로 구성되는 것을 특징으로 하는 광기록매체.
  26. 기판상에 형성된 기록층으로 빛을 조사하므로서, 정보의 기록, 소거, 재생이 가능하며 정보의 기록 및 소거가 비정질상과 결정질상 사이의 양상변화에 의하여 실시되는 광기록매체의 제조시에 ZnS와 SiO2및 C로 구성되는 일체의 스퍼터링타아켓을 사용하여, ZnS와 SiO2및 C의 혼합막을 형성하는 것을 특징으로 하는 광기록매체의 제조법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019950702145A 1994-03-25 1995-03-27 광기록매체및그제조법 KR100364506B1 (ko)

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JP6055990A JPH07262613A (ja) 1994-03-25 1994-03-25 光記録媒体
JP94-55990 1994-03-25
JP94-91972 1994-04-28
JP9197294 1994-04-28

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US (1) US5840466A (ko)
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JP3525197B2 (ja) 1996-02-27 2004-05-10 株式会社リコー 相変化型光記録媒体
KR19980064133A (ko) * 1996-12-16 1998-10-07 히라이가즈히꼬 광 기록 매체
DE19715806A1 (de) * 1997-04-16 1998-10-22 Leybold Materials Gmbh Verfahren zur Herstellung eines Sputtertargets auf der Basis von Zinksulfid sowie das Sputtertarget selbst
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WO1995026549A1 (fr) 1995-10-05
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US5840466A (en) 1998-11-24
TW409920U (en) 2000-10-21
EP0706176A4 (en) 1996-09-25

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