KR20020007171A - 정보 기록 매체 및 그 제조방법 및 그것을 이용한 기록재생 방법 - Google Patents
정보 기록 매체 및 그 제조방법 및 그것을 이용한 기록재생 방법 Download PDFInfo
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- KR20020007171A KR20020007171A KR1020010041586A KR20010041586A KR20020007171A KR 20020007171 A KR20020007171 A KR 20020007171A KR 1020010041586 A KR1020010041586 A KR 1020010041586A KR 20010041586 A KR20010041586 A KR 20010041586A KR 20020007171 A KR20020007171 A KR 20020007171A
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- 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
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- 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
- G11B7/2433—Metals or elements of Groups 13, 14, 15 or 16 of the Periodic Table, e.g. B, Si, Ge, As, Sb, Bi, Se or Te
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- G11—INFORMATION STORAGE
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- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
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- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
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- G—PHYSICS
- G11—INFORMATION STORAGE
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- 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
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- 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
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- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
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- 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
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- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
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- 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
- G11B2007/0009—Recording, reproducing or erasing systems characterised by the structure or type of the carrier for carriers having data stored in three dimensions, e.g. volume storage
- G11B2007/0013—Recording, reproducing or erasing systems characterised by the structure or type of the carrier for carriers having data stored in three dimensions, e.g. volume storage for carriers having multiple discrete layers
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- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
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- 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
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- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
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- 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
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- 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
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- G11B7/0045—Recording
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- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/005—Reproducing
- G11B7/0052—Reproducing involving reflectivity, absorption or colour changes
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- G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
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- G—PHYSICS
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- 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
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- G11B7/254—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 protective topcoat layers
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- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
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- 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
- G11B7/259—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 silver
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- Thermal Transfer Or Thermal Recording In General (AREA)
Abstract
Description
Claims (26)
- 제1 기판과, 상기 제1 기판에 대향하도록 배치된 제2 기판과, 상기 제1 기판과 상기 제2 기판의 사이에 배치된 제1 정보층과, 상기 제1 정보층과 상기 제2 기판의 사이에 배치된 제2 정보층과, 상기 제1 정보층과 상기 제2 정보층의 사이에 배치된 중간층을 구비하고,상기 제1 정보층이 상기 제1 기판측에서 조사되는 레이저 빔에 의해서 결정상과 비정질상의 사이에서 가역적으로 상변태를 일으키는 제1 기록층을 포함하고,상기 제2 정보층이 상기 레이저 빔에 의해서 결정상과 비정질상의 사이에서 가역적으로 상변태를 일으키는 제2 기록층을 포함하고,상기 제1 기록층이 Ge와 Sn과 Sb와 Te를 포함하고 또한 두께가 9㎚ 이하인 것을 특징으로 하는 정보 기록 매체.
- 제 1항에 있어서,상기 제1 기록층이 조성식(Ge-Sn)ASbBTe3+A(단, 2≤A≤22, 2≤B≤4)로 나타내는 재료로 이루어지는 것을 특징으로 하는 정보 기록 매체.
- 제 2항에 있어서,상기 제1 기록층 중의 Sn의 함유량이 25원자% 이하인 것을 특징으로 하는 정보 기록 매체.
- 제 1항에 있어서,상기 제1 기록층이 결정상인 경우의 상기 제1 정보층의 투과율 Tc(%)과, 상기 제1 기록층이 비정질상인 경우의 상기 제1 정보층의 투과율 Ta(%)가 파장 390㎚∼430㎚의 범위 내의 레이저 빔에 대해서 40≤(Tc+Ta)/2를 만족하는 것을 특징으로 하는 정보 기록 매체.
- 제 4항에 있어서,상기 투과율 Tc(%)와 상기 투과율 Ta(%)가 파장 390㎚∼430㎚의 범위 내의 레이저 빔에 대해서 0≤|Tc-Ta|/Tc≤0.15를 만족하는 것을 특징으로 하는 정보 기록 매체.
- 제 1항에 있어서,상기 제1 정보층이 제1 및 제2 유전체층과 제1 반사층을 또한 포함하고,상기 제1 반사층, 상기 제2 유전체층, 상기 제1 기록층 및 상기 제1 유전체층이 상기 중간층측에서 상기 제1 기판측을 향하여 이 순서대로 배치되어 있는 것을 특징으로 하는 정보 기록 매체.
- 제 6항에 있어서,상기 제1 정보층이 상기 제1 반사층과 상기 중간층의 사이에 배치된 제3 유전체층을 또한 구비하는 것을 특징으로 하는 정보 기록 매체.
- 제 7항에 있어서,상기 제3 유전체층의 굴절율이 파장 390㎚∼430㎚의 광에 대해서 2.3 이상인 것을 특징으로 하는 정보 기록 매체.
- 제 7항에 있어서,상기 중간층에 트랙킹 제어용의 그루브가 형성되어 있는 것을 특징으로 하는 정보 기록 매체.
- 제 7항에 있어서,상기 제1 정보층이 상기 제1 유전체층과 상기 제1 기록층 사이의 계면, 상기 제1 기록층과 상기 제2 유전체층 사이의 계면, 상기 제2 유전체층과 상기 제1 반사층 사이의 계면 및 상기 제1 반사층과 상기 제3 유전체층 사이의 계면으로부터 선택되는 적어도 1개의 계면에 배치된 계면층을 또한 구비하는 것을 특징으로 하는 정보 기록 매체.
- 제 6항에 있어서,상기 제1 반사층의 두께가 5㎚∼15㎚의 범위 내인 것을 특징으로 하는 정보 기록 매체.
- 제 6항에 있어서,상기 제1 기판의 두께가 10㎛∼700㎛의 범위 내인 것을 특징으로 하는 정보 기록 매체.
- 제 12항에 있어서,상기 제1 기판에 트랙킹 제어용의 그루브가 형성되어 있는 것을 특징으로 하는 정보 기록 매체.
- 제 1항에 있어서,상기 제2 기판의 두께가 500㎛∼1300㎛의 범위 내인 것을 특징으로 하는 정보 기록 매체.
- 제 14항에 있어서,상기 제2 기판에 트랙킹 제어용의 그루브가 형성되어 있는 것을 특징으로 하는 정보 기록 매체.
- 제 7항에 있어서,상기 제2 정보층이 제4 및 제5 유전체층과 제2 반사층을 또한 포함하고,상기 제2 반사층, 상기 제5 유전체층, 상기 제2 기록층 및 상기 제4 유전체층이 상기 제2 기판측에서 상기 중간층측을 향하여 이 순서대로 배치되어 있는 것을 특징으로 하는 정보 기록 매체.
- 제 16항에 있어서,상기 제2 정보층이 상기 제4 유전체층과 상기 제2 기록층 사이의 계면, 상기 제2 기록층과 상기 제5 유전체층 사이의 계면 및 상기 제5 유전체층과 상기 제2 반사층 사이의 계면으로부터 선택되는 적어도 1개의 계면에 배치된 계면층을 또한 구비하는 것을 특징으로 하는 정보 기록 매체.
- 제1 및 제2 기판과, 제1 및 제2 정보층과, 중간층을 구비하는 정보 기록 매체의 제조방법에 있어서,(a) 상기 제2 기판 상에 상기 제2 정보층을 형성하는 공정과,(b) 상기 제2 정보층 상에 상기 중간층을 형성하는 공정과,(c) 상기 중간층 상에 상기 제1 정보층을 형성하는 공정과,(d) 상기 제1 정보층 상에 상기 제1 기판을 접착하는 공정을 포함하고,상기 제1 정보층이 상기 제1 기판측에서 조사되는 레이저 빔에 의해서 결정상과 비정질상 사이에서 가역적으로 상변태를 일으키는 제1 기록층을 포함하고,상기 제2 정보층이 상기 레이저 빔에 의해서 결정상과 비정질상의 사이에서 가역적으로 상변태를 일으키는 제2 기록층을 포함하고,상기 (c)의 공정은 상기 제1 기록층을 Ge와 Sn과 Sb와 Te를 포함하는 모재를 이용하여 두께가 9㎚ 이하가 되도록 형성하는 공정을 포함하는 것을 특징으로 하는 정보 기록 매체의 제조방법.
- 제 18항에 있어서,상기 (c)의 공정에 있어서, 상기 제1 기록층을 아르곤 가스 또는 크립톤 가스를 포함하는 스퍼터링 가스를 이용한 스퍼터링법으로 형성하는 것을 특징으로 하는 정보 기록 매체의 제조방법.
- 제 19항에 있어서,상기 스퍼터링 가스가 산소 및 질소로부터 선택되는 적어도 1개의 가스를 또한 포함하는 것을 특징으로 하는 정보 기록 매체의 제조방법.
- 제 19항에 있어서,상기 제1 기록층을 0.1㎚/초∼10㎚/초의 범위 내의 성막 속도로 성막하는 것을 특징으로 하는 정보 기록 매체의 제조방법.
- 제 18항에 있어서,상기 (b)의 공정은 상기 중간층의 표면에 트랙킹 제어용의 그루브를 형성하는 공정을 포함하는 것을 특징으로 하는 정보 기록 매체의 제조방법.
- 제 18항에 있어서,상기 제1 정보층이 상기 제1 기록층보다도 상기 중간층측에 배치된 제1 반사층을 또한 포함하고,상기 (c)의 공정이 상기 제1 반사층을 5㎚∼15㎚의 범위 내가 되도록 형성하는 공정을 포함하는 것을 특징으로 하는 정보 기록 매체의 제조방법.
- 정보 기록 매체에 레이저 빔을 조사함으로써 정보 신호의 기록 및 재생을 행하는 기록 재생 방법에 있어서,상기 정보 기록 매체가 청구항 1에 기재된 정보 기록 매체이고,상기 레이저 빔은 상기 정보 기록 매체의 상기 제1 정보층측에서 입사하며,상기 정보 기록 매체의 상기 제2 정보층에서는 상기 제1 정보층을 투과하여 온 상기 레이저 빔에 의해서 정보가 기록 재생되고,상기 레이저 빔의 파장이 390㎚∼430㎚의 범위 내인 것을 특징으로 하는 정보 기록 매체의 기록 재생 방법.
- 제 24항에 있어서,정보를 기록 재생할 때의 상기 정보 기록 매체의 선속도가 1m/초∼50m/초의범위 내인 것을 특징으로 하는 정보 기록 매체의 기록 재생 방법.
- 제 24항에 있어서,상기 레이저 빔은 개구수(NA)가 0.4∼1.1 범위 내의 대물 렌즈에서 집광된 레이저 빔인 것을 특징으로 하는 정보 기록 매체의 기록 재생 방법.
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| EP (1) | EP1172811B1 (ko) |
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| JP4099953B2 (ja) * | 2001-03-23 | 2008-06-11 | ソニー株式会社 | 書換え型の多層光ディスク |
| US6764736B2 (en) * | 2001-07-12 | 2004-07-20 | Matsushita Electric Industrial Co., Ltd. | Optical information recording medium and recording method using the same |
| US6554975B2 (en) * | 2001-08-22 | 2003-04-29 | Wilbur A. Dammann | Liquid gasification reactor |
| WO2003025922A1 (en) * | 2001-09-12 | 2003-03-27 | Matsushita Electric Industrial Co., Ltd. | Optical information recording medium |
| TWI234157B (en) * | 2001-12-07 | 2005-06-11 | Matsushita Electric Industrial Co Ltd | Information recording medium and method for producing the same |
| US6858278B2 (en) * | 2001-12-18 | 2005-02-22 | Matsushita Electric Industrial Co., Ltd. | Information recording medium and method for producing the same |
| EP1619037B1 (en) * | 2003-04-30 | 2011-07-06 | Mitsubishi Kagaku Media Co., Ltd. | Phase-change recording material and information recording medium |
-
2001
- 2001-07-10 TW TW90116831A patent/TW575873B/zh not_active IP Right Cessation
- 2001-07-11 KR KR10-2001-0041586A patent/KR100427098B1/ko not_active Expired - Fee Related
- 2001-07-11 US US09/903,285 patent/US6751184B2/en not_active Expired - Fee Related
- 2001-07-12 DE DE60125285T patent/DE60125285T2/de not_active Expired - Lifetime
- 2001-07-12 EP EP01306008A patent/EP1172811B1/en not_active Expired - Lifetime
- 2001-07-13 CN CNB011328347A patent/CN1316484C/zh not_active Expired - Fee Related
-
2004
- 2004-04-12 US US10/823,487 patent/US20040196863A1/en not_active Abandoned
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100981689B1 (ko) * | 2002-12-13 | 2010-09-13 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | 이중층 광 데이터 저장매체 |
| KR20250061224A (ko) * | 2023-10-27 | 2025-05-08 | 순천향대학교 산학협력단 | 다층 유전체 박막 구조 최적화 설계 시뮬레이션 방법 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1316484C (zh) | 2007-05-16 |
| EP1172811A2 (en) | 2002-01-16 |
| EP1172811A3 (en) | 2004-12-01 |
| US6751184B2 (en) | 2004-06-15 |
| TW575873B (en) | 2004-02-11 |
| EP1172811B1 (en) | 2006-12-20 |
| KR100427098B1 (ko) | 2004-04-17 |
| DE60125285D1 (de) | 2007-02-01 |
| CN1345053A (zh) | 2002-04-17 |
| US20040196863A1 (en) | 2004-10-07 |
| US20020024913A1 (en) | 2002-02-28 |
| DE60125285T2 (de) | 2007-04-05 |
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