JP2009529779A - 有機発光素子の製造方法及びこれによって製造された有機発光素子 - Google Patents
有機発光素子の製造方法及びこれによって製造された有機発光素子 Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 239000010410 layer Substances 0.000 claims abstract description 96
- 229910052751 metal Inorganic materials 0.000 claims abstract description 73
- 239000002184 metal Substances 0.000 claims abstract description 73
- 239000010409 thin film Substances 0.000 claims abstract description 48
- 239000000758 substrate Substances 0.000 claims abstract description 24
- 239000012044 organic layer Substances 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims description 37
- 238000002347 injection Methods 0.000 claims description 35
- 239000007924 injection Substances 0.000 claims description 35
- 239000011368 organic material Substances 0.000 claims description 26
- 229910052782 aluminium Inorganic materials 0.000 claims description 20
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 13
- 229910052709 silver Inorganic materials 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 239000011575 calcium Substances 0.000 claims description 8
- 229910052791 calcium Inorganic materials 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 239000011777 magnesium Substances 0.000 claims description 7
- 229910052749 magnesium Inorganic materials 0.000 claims description 7
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 6
- 238000011065 in-situ storage Methods 0.000 claims description 6
- 229910052744 lithium Inorganic materials 0.000 claims description 6
- 229910052700 potassium Inorganic materials 0.000 claims description 4
- 229910052708 sodium Inorganic materials 0.000 claims description 4
- 239000011734 sodium Substances 0.000 claims description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052688 Gadolinium Inorganic materials 0.000 claims description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 229910052792 caesium Inorganic materials 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- UIWYJDYFSGRHKR-UHFFFAOYSA-N gadolinium atom Chemical compound [Gd] UIWYJDYFSGRHKR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052738 indium Inorganic materials 0.000 claims description 3
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 3
- 239000011133 lead Substances 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims description 3
- 239000011733 molybdenum Substances 0.000 claims description 3
- 239000011591 potassium Substances 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- 239000011135 tin Substances 0.000 claims description 3
- 229910052718 tin Inorganic materials 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 239000010936 titanium Substances 0.000 claims description 3
- 229910052727 yttrium Inorganic materials 0.000 claims description 3
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 3
- 230000008569 process Effects 0.000 description 16
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 7
- 230000005525 hole transport Effects 0.000 description 4
- 238000004544 sputter deposition Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005530 etching Methods 0.000 description 3
- 239000010408 film Substances 0.000 description 3
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 3
- 238000000059 patterning Methods 0.000 description 3
- 238000007740 vapor deposition Methods 0.000 description 3
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- -1 MgAg Inorganic materials 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 238000000206 photolithography Methods 0.000 description 2
- 238000002310 reflectometry Methods 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000002207 thermal evaporation Methods 0.000 description 2
- CUJJMASUEJMSPB-UHFFFAOYSA-N 3-oxa-13-azatetracyclo[7.7.1.02,7.013,17]heptadeca-1,5,7,9(17),10,15-hexaen-4-one Chemical compound C1C=CC2=C(OC(=O)C=C3)C3=CC3=C2N1CC=C3 CUJJMASUEJMSPB-UHFFFAOYSA-N 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229910052693 Europium Inorganic materials 0.000 description 1
- ZCQWOFVYLHDMMC-UHFFFAOYSA-N Oxazole Chemical compound C1=COC=N1 ZCQWOFVYLHDMMC-UHFFFAOYSA-N 0.000 description 1
- FZWLAAWBMGSTSO-UHFFFAOYSA-N Thiazole Chemical compound C1=CSC=N1 FZWLAAWBMGSTSO-UHFFFAOYSA-N 0.000 description 1
- 229910001515 alkali metal fluoride Inorganic materials 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- 239000002019 doping agent Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005566 electron beam evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000005283 ground state Effects 0.000 description 1
- 238000007641 inkjet printing Methods 0.000 description 1
- 238000010884 ion-beam technique Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- IBHBKWKFFTZAHE-UHFFFAOYSA-N n-[4-[4-(n-naphthalen-1-ylanilino)phenyl]phenyl]-n-phenylnaphthalen-1-amine Chemical group C1=CC=CC=C1N(C=1C2=CC=CC=C2C=CC=1)C1=CC=C(C=2C=CC(=CC=2)N(C=2C=CC=CC=2)C=2C3=CC=CC=C3C=CC=2)C=C1 IBHBKWKFFTZAHE-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 238000010345 tape casting Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- TVIVIEFSHFOWTE-UHFFFAOYSA-K tri(quinolin-8-yloxy)alumane Chemical compound [Al+3].C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1 TVIVIEFSHFOWTE-UHFFFAOYSA-K 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/805—Electrodes
- H10K50/82—Cathodes
- H10K50/828—Transparent cathodes, e.g. comprising thin metal layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/17—Carrier injection layers
- H10K50/171—Electron injection layers
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B33/00—Electroluminescent light sources
- H05B33/12—Light sources with substantially two-dimensional radiating surfaces
- H05B33/26—Light sources with substantially two-dimensional radiating surfaces characterised by the composition or arrangement of the conductive material used as an electrode
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K2102/00—Constructional details relating to the organic devices covered by this subclass
- H10K2102/301—Details of OLEDs
- H10K2102/302—Details of OLEDs of OLED structures
- H10K2102/3023—Direction of light emission
- H10K2102/3026—Top emission
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K2102/00—Constructional details relating to the organic devices covered by this subclass
- H10K2102/301—Details of OLEDs
- H10K2102/351—Thickness
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
Description
ガラス(glass)基板の上に電子注入電極でスパッタ工程を使用してアルミニウムを蒸着した後、フォトリソグラフィ及びエッチングで基板を製作し、製作された基板は約16時間大気中に放置して、自然酸化物層としてアルミニウム酸化膜が形成された。続けて、前記基板を10−7torrの真空状態で保管し、前記層上にアルミニウム薄膜を1nmの厚さで熱蒸着し、その上にフッ化リチウム1.5nm、電子輸送層(ETL)、発光層(EML)、正孔輸送層(HTL)及び正孔注入層(HIL)を順次積層した。前記電子輸送層(ETL)は下記の電子輸送物質を利用して20nmの厚さで形成し、前記発光層(EML)はホストとしてAlq3(tri−8−hydroxyquinolinato aluminum)及びドーパントとしてC545T(10−(2−Benzothiazolyl)−2,3,6,7−tetrahydro−1,1,7,7,−tetramethyl l−1H、5H、11H−[1]benzopyrano [6,7,8−ij]quinolizin−11−one)を利用して30nmの厚さで形成し、前記正孔輸送層(HTL)及び正孔注入層(HIL)は各々NPB(4,4’−bis[N−(1−naphtyl)−N−phenylamino]biphenyl)、及びヘキサニトリルヘキサアザトリフェニレン(HAT)を利用して40nm及び70nmの厚さで形成した。その次に、前記有機物層上に正孔注入電極のIZO(Indium Zinc Oxide)をスパッタ工程で蒸着して有機発光素子を製作した。
電子注入電極上に形成したアルミニウム薄膜を1nmの厚さの代りに3nmの厚さで形成したのを除いては、実施例1と同じ方法で実施して有機発光素子を製造した。
電子注入電極上に形成したアルミニウム薄膜を1nmの厚さの代りに5nmの厚さで形成したのを除いては、実施例1と同じ方法で実施して有機発光素子を製造した。
アルミニウム電極上にアルミニウム薄膜を形成しないのを除いては、実施例1と同じ方法で実施して有機発光素子を製造した。
電子注入電極上に形成したアルミニウム薄膜を1nmの厚さの代りに7nmの厚さで形成したのを除いては、実施例1と同じ方法で実施して有機発光素子を製造した。
前記実施例1〜3及び比較例1で製造された素子に対して、電子注入電極を接地させた状態で正孔注入電極に0V〜8Vの電圧を印加し、流れる電流密度を測定した。これに対する結果を図3に示した。
前記実施例1〜3及び比較例1及び2で製造された素子に対し、Photo−Research社PR650 colorimeter/radiometerで輝度を測定し、電流変化(10mA/cm2〜100mA/cm2)による輝度を測定した。
Claims (15)
- 基板上に金属からなるカソード、発光層を含む1層以上の有機物層、及びアノードを順次形成するステップを含む有機発光素子の製造方法であって、前記有機物層の形成前に前記カソード上に自然的に形成された自然酸化物層上に金属薄膜を形成するステップを含むことを特徴とする、有機発光素子の製造方法。
- 前記カソードをアルミニウム、モリブデン、クロム、マグネシウム、カルシウム、ナトリウム、カリウム、チタニウム、インジウム、イットリウム、リチウム、ガドリニウム、銀、スズ、鉛及びこれらの合金からなる群から選択される材料で形成することを特徴とする、請求項1に記載の有機発光素子の製造方法。
- 前記金属薄膜を仕事関数が5eV以下の金属材料で形成することを特徴とする、請求項1に記載の有機発光素子の製造方法。
- 前記金属薄膜をAl、Ag、Ca、Li、Cs及びMgで形成される群から選択される金属又はこれらの合金で形成することを特徴とする、請求項3に記載の有機発光素子の製造方法。
- 前記金属薄膜の厚さが1nm以上5nm以下であることを特徴とする、請求項1に記載の有機発光素子の製造方法。
- 前記金属薄膜の形成とその後に行われる有機物層の形成をインシチュ(in situ)で遂行することを特徴とする、請求項1に記載の有機発光素子の製造方法。
- 前記金属薄膜がカソードが形成された基板の全体表面上に形成されることを特徴とする、請求項1に記載の有機発光素子の製造方法。
- 金属からなるカソード、発光層を含む1層以上の有機物層、及びアノードを順次積層した形態で含み、前記カソードと有機物層間に金属薄膜をさらに含むことを特徴とする、有機発光素子。
- 前記金属薄膜は前記カソード上に自然的に形成された自然酸化物層上に位置することを特徴とする、請求項8に記載の有機発光素子。
- 前記カソードはアルミニウム、モリブデン、クロム、マグネシウム、カルシウム、ナトリウム、カリウム、チタニウム、インジウム、イットリウム、リチウム、ガドリニウム、銀、スズ、鉛及びこれらの合金からなる群から選択される材料からなることを特徴とする、請求項8に記載の有機発光素子。
- 前記金属薄膜は仕事関数が5eV以下の金属材料で形成されることを特徴とする、請求項8に記載の有機発光素子。
- 前記金属薄膜はAl、Ag、Ca、Li、Cs及びMgで形成される群から選択される金属又はこれらの合金で形成されることを特徴とする、請求項11に記載の有機発光素子。
- 前記金属薄膜は厚さが1nm以上5nm以下であることを特徴とする、請求項8に記載の有機発光素子。
- 前記金属薄膜がカソードが形成された基板の全体表面上に形成されていることを特徴とする、請求項8に記載の有機発光素子。
- 前記有機物層のうち前記金属薄膜と接する層は電子注入層であることを特徴とする、請求項8に記載の有機発光素子。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US78228706P | 2006-03-15 | 2006-03-15 | |
US60/782,287 | 2006-03-15 | ||
PCT/KR2007/001284 WO2007105921A1 (en) | 2006-03-15 | 2007-03-15 | Fabrication method for organic light emitting device and organic light emitting device fabricated by the same method |
Publications (2)
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JP2009529779A true JP2009529779A (ja) | 2009-08-20 |
JP4837774B2 JP4837774B2 (ja) | 2011-12-14 |
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Country Status (7)
Country | Link |
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US (2) | US8969126B2 (ja) |
EP (1) | EP1996672B1 (ja) |
JP (1) | JP4837774B2 (ja) |
KR (1) | KR100861640B1 (ja) |
CN (1) | CN101405366B (ja) |
TW (1) | TWI328300B (ja) |
WO (1) | WO2007105921A1 (ja) |
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KR20080082134A (ko) * | 2007-03-07 | 2008-09-11 | 삼성에스디아이 주식회사 | 유기전계발광표시장치 및 그 제조방법 |
JP4483917B2 (ja) * | 2007-09-12 | 2010-06-16 | ソニー株式会社 | 有機電界発光素子および有機電界発光素子の製造方法、ならびに表示装置および表示装置の製造方法 |
JP5710858B2 (ja) * | 2008-05-27 | 2015-04-30 | エルジー ディスプレイ カンパニー リミテッド | 有機el素子 |
TWI469219B (zh) * | 2009-02-16 | 2015-01-11 | Nat Univ Tsing Hua | 降低金屬薄膜表面粗糙度的方法 |
KR102045374B1 (ko) * | 2013-07-31 | 2019-12-02 | 엘지디스플레이 주식회사 | 상부 발광형 유기 발광 소자 및 그의 제조방법 |
CN108807709A (zh) * | 2018-07-02 | 2018-11-13 | 京东方科技集团股份有限公司 | 一种发光二极管及其制作方法、显示基板、显示装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH08124678A (ja) * | 1994-10-27 | 1996-05-17 | Seikosha Co Ltd | El素子 |
JP2004071460A (ja) * | 2002-08-08 | 2004-03-04 | Seiko Epson Corp | 電気光学装置及びその製造方法、並びに電子機器 |
JP2004127551A (ja) * | 2002-09-30 | 2004-04-22 | Seiko Epson Corp | 有機el装置とその製造方法、および電子機器 |
JP2005259550A (ja) * | 2004-03-12 | 2005-09-22 | Idemitsu Kosan Co Ltd | 有機el素子及び表示装置 |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
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GB8909011D0 (en) * | 1989-04-20 | 1989-06-07 | Friend Richard H | Electroluminescent devices |
JPH05174975A (ja) * | 1991-10-16 | 1993-07-13 | Fuji Electric Co Ltd | 有機薄膜発光素子 |
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US8969126B2 (en) | 2015-03-03 |
JP4837774B2 (ja) | 2011-12-14 |
US20090167163A1 (en) | 2009-07-02 |
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KR20070093915A (ko) | 2007-09-19 |
EP1996672A1 (en) | 2008-12-03 |
EP1996672A4 (en) | 2011-02-16 |
TWI328300B (en) | 2010-08-01 |
CN101405366B (zh) | 2012-08-29 |
US20150162561A1 (en) | 2015-06-11 |
US9166189B2 (en) | 2015-10-20 |
WO2007105921A1 (en) | 2007-09-20 |
KR100861640B1 (ko) | 2008-10-07 |
EP1996672B1 (en) | 2012-11-21 |
TW200739996A (en) | 2007-10-16 |
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