TWI241580B - On-groove recordation type optical disc - Google Patents
On-groove recordation type optical disc Download PDFInfo
- Publication number
- TWI241580B TWI241580B TW091137058A TW91137058A TWI241580B TW I241580 B TWI241580 B TW I241580B TW 091137058 A TW091137058 A TW 091137058A TW 91137058 A TW91137058 A TW 91137058A TW I241580 B TWI241580 B TW I241580B
- Authority
- TW
- Taiwan
- Prior art keywords
- layer
- optical
- optical property
- disc
- optical disc
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 86
- 239000000758 substrate Substances 0.000 claims abstract description 41
- 239000011347 resin Substances 0.000 claims abstract description 26
- 229920005989 resin Polymers 0.000 claims abstract description 26
- 239000010410 layer Substances 0.000 claims description 208
- 239000011241 protective layer Substances 0.000 claims description 50
- 239000000463 material Substances 0.000 claims description 15
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 230000003711 photoprotective effect Effects 0.000 claims 1
- 239000000975 dye Substances 0.000 description 55
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229920000515 polycarbonate Polymers 0.000 description 3
- 239000004417 polycarbonate Substances 0.000 description 3
- 238000004528 spin coating Methods 0.000 description 3
- 229910001316 Ag alloy Inorganic materials 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 229910017107 AlOx Inorganic materials 0.000 description 1
- 241000208340 Araliaceae Species 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 229910000656 Lu alloy Inorganic materials 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 229910004205 SiNX Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000003848 UV Light-Curing Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 238000001723 curing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000012044 organic layer Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920006289 polycarbonate film Polymers 0.000 description 1
- 150000004291 polyenes Chemical class 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 210000002784 stomach Anatomy 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Classifications
-
- 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
- G11B7/254—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
- G11B7/2542—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 consisting essentially of organic resins
-
- 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
- G11B7/252—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
- G11B2007/25705—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
- G11B2007/25708—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 containing group 13 elements (B, Al, Ga)
-
- 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
- G11B2007/25705—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
- G11B2007/25713—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 containing nitrogen
-
- 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
- G11B7/00455—Recording involving reflectivity, absorption or colour changes
-
- 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
- G11B7/244—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 organic materials only
- G11B7/246—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 organic materials only containing dyes
-
- 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
- G11B7/2533—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
- G11B7/2534—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 polycarbonates [PC]
-
- 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
Landscapes
- Optical Record Carriers And Manufacture Thereof (AREA)
Description
1241580 坎、發明說明 (發明說明應敘明··發明所屬之技術領域、先前技術、内容、實施方式及圖式簡單說明 t發明所屬之技術領域 發明領域 本發明係有關寫一次型光碟。 5 【先前技術】 發明背景 通常習知寫一次光碟如CD_R(可錄式)及DVD-R具有如 下結構。透明樹脂基板於基板之一表面有導槽。於此表面 上’藉旋塗施用有機染料。然後例如金、銀(或銀合金)及 1〇鋁(或鋁合金)製成之有機反射層成形於有機染料層上。最 如紫外光硬化樹脂之保護層(稱作為「蓋層」)施加於 有機反射層上。為了記錄資訊於具有此種結構之光碟,供 貢訊記錄用之雷射束輻射至該基板側。雷射束分解有機染 料,造成折射枝變。雷射束產±的熱也崎變導槽及反射 15層。結果小坑穴成形於光碟上作為被記錄的資訊。 一代可錄式光碟系統(稱作為r
晚近已經發展出下一# 」或「DVR-藍」系統)。 1241580 玖、發明說明 DVD-R光碟),由DVR_R光碟之雷射㈣射方向不同。如 此於DVR-R光碟之樹脂基板上成形各層之積聚方向係與 CD^R及DVD-R之積聚方向相反。如此偶爾稱作為「反向 隹且」、、'。構此外,DVR_j^碟需要介電保護層來保護有 機染料層’於蓋層形成期間有機染料層不接觸未硬化的紫 外光硬化樹脂。紫外光硬化樹脂形成蓋層。如此DVR-R光 碟之結構及製法係、與CD_R光碟及DVD_R光碟不同。
由別文可知’ DVR-R光碟需使用特別適合用於DVR_R 光碟之材料及結構製造。 10 【明内容】 發明概要 其有較小的記 本發明之一目的係提供一種DVR-R碟 錄記號(印記)俾達成大量記錄。 15 根據本發明之一方面,提供一種光碟 基板’具有溝槽於其一表面上;一反射層 包含:一樹脂 其係形成於該 樹脂基板表面上方,讓反射層具有對應於溝槽之凹凸形狀 ;一特性可改變層,其係成形於反射層上方,該特性可改 變層之光學特性於照射光束時改變;一透光保護層,其係 成形於該特性可改變層上方;以及一透光蓋層,其係成形 於该保護層上方供密封該反射層、特性可改變層及保護層 至樹脂基板,其中至少於光束照射至光學特性可改變層之 凸部時,於光學特性可改變層之光學特性改變後,樹脂基 板硬度係大於蓋層硬度。 當光束照射至特性可改變層時,特性可改變層畸變。 20 1241580 玖、發明說明 因基板比蓋層硬,
碟可配置為, 射至凸部時,特性可改變層之凸部產熱。光 朝向保護層之傳熱數量係大於朝向反射層之 傳熱。 圖式簡單說明 第1A圖顯不根據本發明之第一具體實施例,光碟之示 思透視圖, 第1B圖顯不第丨A圖所示光碟沿光碟半徑所取之剖面 10 圖; 第1C圖顯不第1B圖所示有機染料層及鄰近各層之放 大剖面圖; 第2A圖顯示DVR-R碟之剖面圖,顯示當記錄資訊時 DVR-R碟各層之畸變; 15 第2B圖係類似第2A圖,顯示於不同DVR-R碟之各層 之畸變; 第3 A圖顯示DVR-R碟之剖面圖,顯示當記錄資訊時出 現串寫;以及 第3B圖顯示可防止串寫之不同DVR-R碟之剖面圖。 20 【實施方式】 較佳實施例之詳細說明 參照第1A至1C圖,說明根據本發明之第一具體實施 例之DVR-R碟。 光碟(DVR-R碟)8包括樹脂基板1〇,樹脂基板1〇係由巨 1241580 玖、發明說明 分子材料如聚碳酸酯及聚烯製成。複數個溝槽12成形於基 板10下表面(換言之記錄資訊的表面)上。溝槽記錄資訊軌 介於溝槽間。 本具體實施例中,溝槽12晃動而界定記錄於光碟上之 5貧料位址(或提供位址資訊)。特定言之,溝槽12間之凸部( 換。之陸地16)隨著晃動而成形,且資料係記錄於形成於 陸地16上的記錄層。此種記錄架構稱作為「溝槽上記錄」。 如由第ic圖最明白顯示,反射層13成形於溝槽12上方 。反射層13之材料例如為鋁、鋁合金、銀或銀合金。因此 1〇薄反射層有高反射比。 有機染料層14施用於反射層13上方。有機層14例如係 -由紋塗有機染料製成。因溝槽上記錄架構採用於本具體 實施例,故有機染料層14於溝槽12間之陸地16上方必須: 有足夠厚度。 ^ 通兩如第1C圖所示,當有機染料係藉旋塗法施用於溝 ==有=料厚度對陸地16之有機染料厚度 . 2。右有機染料層必須具有30奈米厚度才 -充分記錄資訊’則於陸地16之有機染料層厚度為鮮米 而溝槽之有機染料層厚度為 20為40奈米—入 不卡右溝槽珠度 麵元王被有機染料填補。此外,因溝 槽之有機染料層由溝槽凸起達5_2〇奈米’故溝 = 料層連續至毗鄰陸地16 胃有“ 有栻木科層達5-20奈米厚度。 …蔓 係成形於有機染料層14上方,甚展1 於保護層丨5上方。保護 盖層⑴系成形 曰15保^卿料層U不接 1241580 玖、發明說明 11之紫外光硬化樹脂。保護層15係由介電材料製成。特定 言之,保護層15係由金屬氧化物(如Si〇x及Al〇x)或金屬氮 化物(如SiNx及A1NX)製成,保護層15必須保護有機染料層 且需為高度透明。 5 蓋層11例如係由巨分子樹脂如聚碳酸酯製成。因供資 訊記錄用之雷射束通過蓋層11,故蓋層11需為透明。 若基板10加反射層13之硬度以Ha表示,而蓋層11加保 護層15之硬度以Hb表示,則於本具體實施例確立如下關係 式: 10 Ha>Hb 前述「硬度」為凹口硬度。例如「硬度」為布里淫 (Brinell)硬度(JIS_Z2243)、維克司(Vkkers)硬度 Z2244)、洛克維(RockweU)硬度(jis_Z2245)或鉛筆硬度 (JIS-K5400)。容後詳述,夾置有機染料層之反射層、基板 15、保護層及蓋層之畸變係由於雷射束照射時,有機染料層 的膨脹所引起,係以各層的凹口表示。 須注意於本具體實施例,光碟各層之「硬度」之條件 方程式非僅限於前述方程式。有機染料層之折射率隨著溫 度改變’當照射雷射束供記錄資訊時,溫度升高。於有機 染料層之折射率改變(換古各 、"之§有機染料層溫度係低於某 種溫度T,該溫度τ造成有機汰 ” 有械木枓層之明顯非線性容積膨脹 ’例如染料之熱解溫度、毕 # 木抖點及染料昇華溫度)前, 於本具體實施例可確立如下方程式·
Ha^Hb 20 1241580 玖、發明說明 但當折射率改變時,換言之當有機染料層溫度超過溫 度T時,需確立如下關係式:
Ha>Hb 、,於凹口硬度4驗,試驗材料表層(至距離表面數十奈 5米)可忽略。因在匕本具體實施例中,&形於基板1〇上之反 射層叫厚約2〇奈米)、以及成形於蓋扣上方之保護層15( 厚約50奈米)可忽略。如此可假設硬度出表示基板本身的 硬度,而硬度Hb表示蓋層本身的硬度。 現在將說明本具體實施例之DVR_R碟8之製造過程。 10須注意本發明非僅囿限於後文所述之特定方法、材料、尺 寸、比值及數值。 首先藉電子束記錄器以及電子阻罩,製備將於基板10 上形成溝槽之料。錢藉電成形而由母碟製成鎳衝壓模。 隨後藉射出成形由鎳衝壓模成形樹脂基板】0。樹脂基 15板10之材料為聚碳酸酿。基板10具有直徑約12〇毫米,厚 :1.1毫米,溝槽深度約40奈米、執線間距32〇奈米及陸地 見度130奈米。陸地寬度係等於晚鄰溝槽12間之間隔距離 。溝槽12之側壁具有約90度傾斜。 反射層13係成形於基板1〇之溝槽12上方。反射層㈣ 20由I呂-鈦合金製成(|呂:鈦υ。反射層13厚約2〇奈米, 係藉滅鑛法製成。反射層13具有對應於溝槽12之凹凸形狀 之凹凸形狀。
Ik後有枝木料藉旋塗法施加於反射層13上方,讓所 得有機染料層Μ於各陸地16之厚度約财米,於各溝槽12 10 124158〇 玖、發明說明 之厚度、'勺60奈米。然後保護層15形成於有機染料層14上方 保4層15厚度為5〇奈米。保護層15係由氮化鋁(ΑΐΝχ)製 成。亂化紹係藉反射賤鍍法製備,紹用作為標乾,而氬· 氮〇〇 : 1)用作為反應性氣體。 5 ^ 最後,蓋層11成形於保護層丨5上方。蓋層丨丨為厚約 0.095笔米之聚碳酸酯薄膜,聚破酸§旨係藉紫外光硬化黏 著劑固定。 藉此方式製成的DVR-R碟8進行鉛筆硬度試驗。試驗 顯不基板硬度為Hb,而蓋層硬度為2Β。 10 將參照第2Α及2Β圖說明此種DVR-R碟8之資訊記錄, 第2A及2B圖顯示兩片不同光碟之放大剖面圖。 如刖文說明,本具體實施例中,當記錄資訊於光碟8 日守,雷射束照射於光碟8之蓋層丨丨。雷射束透射通過蓋層 11及保護層15,雷射束會聚於有機染料層14之溝槽12間( 15或陸地16上),因而形成射束點20於陸地16。於射束點, 雷射束造成有機染料之熱分解,故有機染料之折射率改變 。此種折射率的改變為不可逆。因此於雷射束之照射完成 、且有機染料層溫度降至室溫後,被改變的折射率無法返 回原先折射率。此乃資訊記錄於有機染料層14於陸地部分 2〇 16之原理。 當有機染料被熱分解時,有機染料容積膨脹,且於雷 射束點20内部以及周圍的有機染料層丨4產生應力。因此, 若基板10比蓋層11更軟,則應力造成的畸變分散至反射層 13及基板10,如第2A圖之虛線指示。特別反射層13之畸變 11 1241580 玖、發明說明 於擷取所記錄的資訊時,對記錄於執線上的資訊造成不良 影響。 當資訊由DVR-R碟8擷取時,係利用雷射束由反射層 13的反射。因此若反射層13已經畸變,則擷取所得信號含 5有大失真。特別DVR-R碟比一般DVD-R之執線間距極小, 俾提高記錄密度。當資訊藉雷射束點2〇記錄時,碟片上形 成的記號間隔也極小。因此畸變的反射層可能影響擷取所 得信號,且造成毗鄰軌線間的串音或干擾。 但本具體實施例中,樹脂基板1〇經常性比蓋層11更硬 1〇 ,或當雷射束照射時當有機染料層的折射率改變時,樹脂 基板10比蓋層11更硬。結果,因有機染料層14之容積膨服 產生的應力分散至蓋層丨丨,如第2B圖虛線指示。如此畸變 保護層15及蓋層η,但不會畸變反射層13及基板ι〇。結果 具有前述構造之光碟可避免串音以及反射層13崎變的發生 15。此種結構可防止反射層的形變,否則形變將對擷取所得 資訊品質造成不良影響。 有機染料層14之折射率因材料特性緣故,可設定為極 為接近蓋層11(以及保護層15)之折射率。例如折射率差異 f為〇·Η_0。如此即使蓋層u及保護層15因應力而形變: 20盍層11與保護層15間之界面反射可忽略。此外,蓋層^及 保護層15皆透明,故畸變的蓋層及崎變的保護層不會造成 資訊擷取品質的低劣。 本發明之第二具體實施例將參照第沾圖說明。本具體 實施例之峨韻8之製法及結構係類似第—具體實施例 12 124158〇 玖、發明說明 ’故刪除其說明。當述及光碟8結構時,本具體實施例也 與第lALC圖相關。類似之參考編號及符號用於第1A、 IB、1C、3A及 3B 圖。 第二具體實施例特別係針對光碟,光碟包括對防止串 5寫的發生為最理想材料。串寫是一種現象,其中於資訊記 錄期間由雷射束照射產生的有機染料之熱干擾田比鄰之資訊 記錄軌。 第二具體實施例之光碟8記錄資訊於有機染料層14之 溝槽12間之陸地16。雷射束形成射束點2〇於陸地16供資訊 1〇記錄之用。此乃溝槽上記錄架構。陸地16之有機染料層14 於毗鄰軌方向連續至毗鄰溝槽12之有機染料層14達5_2〇奈 米厚度。光碟8有金屬反射層13。反射層13係由具有高導 …、率之材料製成。有機染料層丨4與反射層丨3間之接觸面積 ^亥接觸面積於陸地16比於溝槽12小。因此當雷射束照射 而汜錄貢訊於光碟8之陸地16時,於有機染料層14於陸地 16(換言之於射束點2〇)產生的有限熱量只被反射層ι3所吸 收,如第3 A圖標示為「Cal」之未加影線之向上箭頭指示 雖然相對大量熱被反射層13吸收,但大部分剩餘熱量傾 向於於有機染料層14内部於鄰近執方向(第3A圖之右及左 20 方向)由射束點20傳熱。 為了克服此項問題,第二具體實施例之光碟8係配置 成由射束點20之傳熱於雷射束照射方向(第3 A圖之上下 方向,稱之為「垂直方向」)比鄰近執線方向(稱之為「水 平方向」)更大。垂直方向之傳熱可分成兩方向,換言之 13 1241580 玖、發明說明 -方向朝向反射層13,而另一方向朝向保護層… 因反射層13係由具有高導熱率之金屬製成,故朝向反 射層13之傳熱量相當大。若朝向保護層^之傳熱係大於朝 5 10 向反射層13之傳熱,則於垂直方向(第3B圖上下方向)之傳 熱加總變成顯著大於水平方向傳熱。此種光碟8顯示於第 則。如所示,大部分於有機染料層14之射束點20產生的 …、係於垂直方向傳熱’而只有小量熱係於水平方向傳熱。 —光碟8各層之導熱率不足以決定傳熱量。因此本具體 貝知例中,於有機染料層14與田比鄰該層(反射層Η或保護 層15)間之界面,由該界面於水平方向延伸的矩形平行六 面體用來决定來自有機染料層14於垂直方向的傳熱量。傳 熱量以下式決定: 矩形平仃六面體容積χ矩形平行六面體導熱率 幵平行/、面體之疋位決定如後。矩形平行六面體中 15線係於第糊之緣圖紙上下方向延伸,且延伸通過射束點 20中心。矩形平行六面體底部為具有尺寸「d」X「d」的 方形,此處「d」表示射束點2〇直徑。於射束點2〇上方及 下方有兩個矩形平行六面體。上矩形平行六面體高度係由 有機染料層-反射層界面以及反射層-基板界面界定。上矩 形平行/、面體呵度係等於反射層丨3厚度。下矩形平行六面 體高度係由有機染料層-保護層界面以及保護層_蓋層界面 界定。下矩形平行六面體高度係等於保護層15厚度。 第二具體實施例中,上及下矩形平行六面體尺寸以及 光碟8各層材料係決定因而確立下式: 14 1241580 玖、發明說明
Sb X Lb X Cb ^ Sa x La x Ca 此處Sa表示上矩形平行六面體之底方形,以表示反射 層13厚度,Ca表示反射層導熱率,讣表示下矩形平行六面 體底方形,Lb表示保護層15厚度以及Cb表示保護層15導熱率。 5 當上式為真時,有機染料層14產生的大部分熱係於垂 直方向傳遞。 通常光碟8各層厚度由溝槽底一點至溝槽侧壁一點各 異。此外各層於陸地不具有完美均勾厚度。因此本具體實 施例中,層厚度(La或Lb)為陸地上方該層厚度值。 1〇 第二具體實施例中,雷射源為波長;1 =405奈米之紫半 導體雷射,物鏡具有數值孔徑ΝΑ=0.85。概略言之,射束 點直徑d係以下式表示: d = 0.52 X (λ/ΝΑ) 如此射束點直徑d於本具體實施例接近為25〇奈米(d与 15 250 奈米)。 在呂合金製成之反射層13之導熱率約為24〇瓦/米 /K(W/m/K)。氮化紹製成之保護層15之導熱率約為12〇_2〇〇 瓦/米/K,但保護層導熱率隨保護層製法及製造條件而異。 於光碟8垂直方向來自射束點2〇(或有機染料層ι4)之傳 20熱i係由别述數值及方程式求出。計算結果顯示如後。 朝向反射層13之傳熱為:
Sa X La X Ca ^ 3.9 x 1〇'19 Wm2/K 朝向保護層15之傳熱為:
Sb X Lb X Cb ^ 4.4 x 1〇'19 Wm2/K 15 1241580 玖、發明說明 由計算結果證實本具體實施例之〇乂尺劣碟8滿足條件 SbxLbxCb - SaxLaxCa。結果於有機染料層14產生 的大部分熱係於第3B圖所示垂直方向擴散,因而可防止峨 鄰軌間的串寫。 5 需注意本發明非僅囿限於前述具體實施例。例如第二 具體實施例要求條件Sb x Lb x Cb ^ Sa χ ^ χ ^,但若 2第3A圖之左右方向(換言之第3八圖之未加引線的右及左 箭頭Cal)之傳熱量減低則可滿足條件,防止串寫至毗鄰陸 地換5之’若幸月向保護層及反射層的傳熱加總足夠防止 10 串寫則可滿足條件。 【圖式簡單說明】 第1A圖顯示根據本發明之第一具體實施例,光碟之示 意透視圖; 第1B圖顯示第1 a圖所示光碟沿光碟半徑所取之剖面 15 圖; 第1C圖顯示第1B圖所示有機染料層及鄰近各層之放 大剖面圖; 第2A圖顯示DVR-R碟之剖面圖,顯示當記錄資訊時 DVR-R碟各層之畸變; 20 第2B圖係類似第2A圖,顯示於不同DVR-R碟之各層 之畸變; 第3 A圖顯不DVR-R碟之剖面圖,顯示當記錄資訊時出 現串寫;以及 第3B圖顯示可防止串寫之不同DVR_R碟之剖面圖。 16 1241580 玖、發明說明 【圖式之主要元件代表符號表】 8...DVR-R 碟 10…樹脂基板 11…蓋層 12…溝槽 13…反射層 14…有機染料層 15…保護層 16…陸地 20···雷射束點 17
Claims (1)
- *'8' 1241580 拾、申請專利範圍 範圍修正本 第091Π7058號發明申請案申請專利 1. 一種光碟 包含: 修正曰期:94年1月 其係供記錄資訊於光碟之溝槽間,該光碟 -樹脂基板’具有溝槽於其一表面上; -反射層,其係形成於該樹脂基板表面上方,讓 反射層具有對應於該等溝槽之凹凸形狀; -光學特性可改變層,其係形成於反射層上方, 讓光學特性可改變層具有對應於反射層之凹凸形狀之 10 15 20 凹凸形狀,光學特性可改變層所具之光學特性於光束 照射該光學特性可改變層時會改變; 透光保濩層,其係形成於該光學特性可改變層 上方;以及 透光蓋層’其係形成於該保護層上方供密封該 反射層、光學特性可改變層及保護層至樹脂基板,其 中至少於光束照射至光學特性可改變層之凸部時使光 學特性可改變層之光學特性改變之後,樹脂基板硬度 係大於蓋層硬度。 2.如申請專利範圍第丨項之光碟,其中該光束係經由蓋層 及保護層輻射至光學特性可改變層之凸部,俾供記錄 資訊於光碟。 3·如申請專利範圍第1項之光碟,其中該光學特性可改變 層為一種有機染料層,其具有以光束照射時可改變的 折射率。 18 1241580 拾、申請專利範圍 4·如申請專利範圍第1項朵 貝之先碟,其中該光碟為DVR-R碟。 5·如申凊專利範圍第1 g 固昂丨貞之先碟’其中該基板厚約hl毫米 ,以及該蓋層厚約01毫米。 6·如申請專利範圍第3項之光碟,其中於光學特性可改變 層之折射率改變後,該基板硬度係大於蓋層硬度。 7.種光碟’其係供記錄資訊於光碟之溝槽間,該光碟 包含: 一樹脂基板,具有溝槽於其一表面上; 一反射層,其係形成於該樹脂基板表面上方,讓 反射層具有對應於該等溝槽之凹凸形狀; 一光學特性可改變層,其係成形於反射層上方, 讓光學特性可改變層具有對應於反射層之凹凸形狀之 凹凸形狀’光學特性可改變層所具之光學特性於光束 照射該光學特性可改變層時會改變; 一透光保護層,其係形成於該光學特性可改變層 上方;以及 一透光蓋層,其係形成於該保護層上方供密封該 反射層、光學特性可改變層及保護層至樹脂基板,其 中當光束照射於凸部時,於光學特性可改變層之凸部 產生的熱由該光學特性可改變層朝向保護層傳熱量係 比由光學特性可改變層朝向反射層傳熱量更大。 8·如申請專利範圍第7項之光碟,其中該光束形成具有一 種直徑的射束點於該光學特性可改變層凸部;射束點 直徑、射束點直徑、保護層厚度與保護層導熱率之乘 19 1241580 _圍L 拾、申言k' :大於射束點直徑、射束點直徑、反射層厚度與反 射層導熱率之乘積。 9·如申請專利範圍第7項之光碟,其中該光束係經由蓋層 t保護層輻射至光學特性可改變層之凸部,俾供記錄 資訊於光碟。 之光碟,其中該光學特性可改變 ,其具有以光束照射時可改變的 1〇·如申請專利範圍第7項 層為一種有機染料層 折射率。 申°月專利範圍第7項之光碟,其中該光碟為DVR-R碟。 12.如申請專利範圍第7項之光碟,其中該基板厚社!毫米 ’以及該蓋層厚約O.i亳米。 亡申π專利乾圍第7項之光碟,其中該反射層係由具有 高導熱率材料製成。 女申π專利範圍第7項之光碟,其中該反射層係由銘合 金製成,以及該保護層係由氮化鋁製成。 5 ·種供έ己錄資訊用之光碟,包含: 一基板,具有溝槽於其一表面上; 一反射層,其係形成於該樹脂基板表面上方,讓 反射層具有對應於該等溝槽之凹凸形狀; 一光學特性可改變層,其係形成於反射層上方, 讓特性可改變層具有對應於反射層之凹凸形狀之凹凸 形狀’光學特性可改變層所具之光學特性於光束照射 該光學特性可改變層時會改變; 一保護層,其係形成於該光學特性可改變層上方; 201241580 拾、申請專利範匱 以及 一蓋層,其係形成於保護層上方,其中由光束照 射於一光學特性可改變層之凸部而於該凸部產生的熱 係以一足以防止該光學特性可改變層凸部之串寫產生 5 於該等凸部毗鄰處之量傳向保護層及反射層。 21
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002010987A JP2003217174A (ja) | 2002-01-21 | 2002-01-21 | グルーブ間記録方式による光ディスク |
Publications (2)
Publication Number | Publication Date |
---|---|
TW200302468A TW200302468A (en) | 2003-08-01 |
TWI241580B true TWI241580B (en) | 2005-10-11 |
Family
ID=19191635
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW091137058A TWI241580B (en) | 2002-01-21 | 2002-12-23 | On-groove recordation type optical disc |
Country Status (7)
Country | Link |
---|---|
US (2) | US20030137921A1 (zh) |
EP (1) | EP1477976A4 (zh) |
JP (1) | JP2003217174A (zh) |
CN (1) | CN1623198A (zh) |
MY (1) | MY141498A (zh) |
TW (1) | TWI241580B (zh) |
WO (1) | WO2003063153A1 (zh) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003187498A (ja) * | 2001-10-12 | 2003-07-04 | Fuji Photo Film Co Ltd | 光情報記録媒体 |
JP2003217173A (ja) * | 2002-01-21 | 2003-07-31 | Pioneer Electronic Corp | グルーブ内記録方式による光ディスク |
JP2004079131A (ja) * | 2002-08-22 | 2004-03-11 | Fuji Photo Film Co Ltd | 光情報記録媒体 |
AU2003259412A1 (en) * | 2002-08-29 | 2004-03-19 | Koninklijke Philips Electronics N.V. | Multi-stack optical data storage medium and use of such medium |
US7702673B2 (en) * | 2004-10-01 | 2010-04-20 | Ricoh Co., Ltd. | System and methods for creation and use of a mixed media environment |
US7385911B2 (en) * | 2004-11-10 | 2008-06-10 | Tdk Corporation | Optical recording medium having multiple layers of different thermal conductivities |
WO2006109722A1 (ja) * | 2005-04-07 | 2006-10-19 | Mitsubishi Kagaku Media Co., Ltd. | 光記録媒体 |
JP2008059702A (ja) * | 2006-08-31 | 2008-03-13 | Toshiba Corp | 光ディスク及びこの光ディスクを用いた光ディスク装置 |
CN112382735B (zh) * | 2020-11-17 | 2021-11-12 | 东莞赣锋电子有限公司 | 一种激光清洗制备锂离子电池极片的方法 |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4990388A (en) * | 1988-07-30 | 1991-02-05 | Taiyo Yuden Co., Ltd. | Optical information recording medium |
JPH0827974B2 (ja) * | 1988-08-26 | 1996-03-21 | 太陽誘電株式会社 | 光情報記録媒体およびその光情報記録方法 |
US5194363A (en) * | 1990-04-27 | 1993-03-16 | Matsushita Electric Industrial Co., Ltd. | Optical recording medium and production process for the medium |
JPH05101442A (ja) * | 1991-03-25 | 1993-04-23 | Fuji Xerox Co Ltd | 光記録媒体 |
JPH0558046A (ja) * | 1991-08-28 | 1993-03-09 | Nippondenso Co Ltd | 書き換え可能な光情報記録媒体 |
US5729533A (en) * | 1995-09-12 | 1998-03-17 | Wae Manufacturing Inc. | Two-sided, light-readable information recording disc stacks and methods of making same |
JPH10302310A (ja) * | 1997-04-25 | 1998-11-13 | Sony Corp | 光学記録媒体及び光学ディスク装置 |
JP2001023245A (ja) * | 1999-07-09 | 2001-01-26 | Sony Corp | 光記録媒体および光記録装置 |
DE60133895D1 (de) * | 2000-06-16 | 2008-06-19 | Mitsubishi Kagaku Media Co Ltd | Optisches informationsaufzeichnungsmedium |
JP2002008269A (ja) * | 2000-06-22 | 2002-01-11 | Sony Corp | 光学記録媒体およびその製造方法 |
JP2002260280A (ja) * | 2000-06-28 | 2002-09-13 | Tdk Corp | 光情報媒体およびその評価方法 |
JP2002092956A (ja) * | 2000-09-13 | 2002-03-29 | Nec Corp | 光学情報記録媒体およびその製造方法 |
JP4111666B2 (ja) * | 2000-09-21 | 2008-07-02 | 富士フイルム株式会社 | 光情報記録媒体の製造方法 |
JP2003162844A (ja) * | 2001-11-26 | 2003-06-06 | Toshiba Corp | 光学情報記録媒体 |
JP2003203338A (ja) * | 2001-12-28 | 2003-07-18 | Tdk Corp | 光記録媒体の記録方法及び光記録媒体 |
JP2003217173A (ja) * | 2002-01-21 | 2003-07-31 | Pioneer Electronic Corp | グルーブ内記録方式による光ディスク |
JP2004030843A (ja) * | 2002-06-28 | 2004-01-29 | Pioneer Electronic Corp | 情報記録再生媒体 |
-
2002
- 2002-01-21 JP JP2002010987A patent/JP2003217174A/ja active Pending
- 2002-12-13 CN CN02828609.XA patent/CN1623198A/zh active Pending
- 2002-12-13 EP EP02788818A patent/EP1477976A4/en not_active Withdrawn
- 2002-12-13 WO PCT/JP2002/013061 patent/WO2003063153A1/ja active Application Filing
- 2002-12-18 US US10/321,543 patent/US20030137921A1/en not_active Abandoned
- 2002-12-23 TW TW091137058A patent/TWI241580B/zh not_active IP Right Cessation
-
2003
- 2003-01-10 MY MYPI20030080A patent/MY141498A/en unknown
-
2005
- 2005-09-22 US US11/233,422 patent/US7263057B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US7263057B2 (en) | 2007-08-28 |
EP1477976A4 (en) | 2008-02-20 |
WO2003063153A1 (fr) | 2003-07-31 |
US20030137921A1 (en) | 2003-07-24 |
EP1477976A8 (en) | 2005-01-19 |
EP1477976A1 (en) | 2004-11-17 |
US20060015887A1 (en) | 2006-01-19 |
CN1623198A (zh) | 2005-06-01 |
TW200302468A (en) | 2003-08-01 |
MY141498A (en) | 2010-04-30 |
JP2003217174A (ja) | 2003-07-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7263057B2 (en) | On-groove recordation type optical disc | |
US7534480B2 (en) | Multi-layer super resolution optical disc | |
JPWO2003101750A1 (ja) | 情報記録媒体及びその製造方法 | |
CN100470647C (zh) | 超解析光盘 | |
US6844043B2 (en) | Optical disk using groove recording system | |
US6835432B2 (en) | Optical disc and method for manufacturing the optical disc | |
JPWO2002101735A1 (ja) | 光記録媒体 | |
JP2006511014A (ja) | 光記憶用新材料としての2層光転写レジストの利用 | |
JP2003303442A (ja) | 光学記録媒体 | |
JP3986332B2 (ja) | 光記録媒体 | |
US7651752B2 (en) | Super resolution optical disc | |
JP3889028B2 (ja) | 情報記録媒体 | |
JP2006182030A (ja) | 情報記録媒体 | |
JP4024567B2 (ja) | 光記録媒体 | |
KR100747528B1 (ko) | 광기록매체 | |
TWI269295B (en) | Optical recording medium | |
JP2007012233A (ja) | 光情報記録媒体 | |
KR20070116788A (ko) | 저 상승 영역들을 갖는 트랙을 포함하는 비가역 광학 기록매체 및 이를 이용하는 방법 | |
JP2002312977A (ja) | 光学記録媒体およびその記録再生方法 | |
JPH0323529A (ja) | 光情報記録媒体 | |
JP2004342196A (ja) | 追記型光記録媒体とその記録方法 | |
JP2003045073A (ja) | 光記録媒体 | |
JP2007095246A (ja) | 高密度光記録媒体および記録再生方法 | |
JP2001351269A (ja) | 光情報記録媒体、その情報記録方法およびその基板の製造方法 | |
JP2008004190A (ja) | 光記録媒体 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4A | Annulment or lapse of patent due to non-payment of fees |