JP5432114B2 - 白色発光マイクロキャビティoledデバイス - Google Patents
白色発光マイクロキャビティoledデバイス Download PDFInfo
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- JP5432114B2 JP5432114B2 JP2010282769A JP2010282769A JP5432114B2 JP 5432114 B2 JP5432114 B2 JP 5432114B2 JP 2010282769 A JP2010282769 A JP 2010282769A JP 2010282769 A JP2010282769 A JP 2010282769A JP 5432114 B2 JP5432114 B2 JP 5432114B2
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- Prior art keywords
- oled device
- light
- microcavity
- layer
- light emitting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 150000001340 alkali metals Chemical class 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 125000003282 alkyl amino group Chemical group 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 125000003277 amino group Chemical class 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 125000005577 anthracene group Chemical group 0.000 description 1
- 150000001454 anthracenes Chemical class 0.000 description 1
- 125000002178 anthracenyl group Chemical group C1(=CC=CC2=CC3=CC=CC=C3C=C12)* 0.000 description 1
- 125000001769 aryl amino group Chemical group 0.000 description 1
- 125000004104 aryloxy group Chemical group 0.000 description 1
- 125000005605 benzo group Chemical group 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- 125000002529 biphenylenyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3C12)* 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 1
- 125000005606 carbostyryl group Chemical group 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 229920000891 common polymer Polymers 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229920001940 conductive polymer Polymers 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 125000002993 cycloalkylene group Chemical group 0.000 description 1
- 125000000582 cycloheptyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 125000005266 diarylamine group Chemical group 0.000 description 1
- 125000004986 diarylamino group Chemical group 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007850 fluorescent dye Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 229920002313 fluoropolymer Polymers 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 125000003187 heptyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000004770 highest occupied molecular orbital Methods 0.000 description 1
- 239000008240 homogeneous mixture Substances 0.000 description 1
- 229910052809 inorganic oxide Inorganic materials 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000000608 laser ablation Methods 0.000 description 1
- QDLAGTHXVHQKRE-UHFFFAOYSA-N lichenxanthone Natural products COC1=CC(O)=C2C(=O)C3=C(C)C=C(OC)C=C3OC2=C1 QDLAGTHXVHQKRE-UHFFFAOYSA-N 0.000 description 1
- 125000005647 linker group Chemical group 0.000 description 1
- FQHFBFXXYOQXMN-UHFFFAOYSA-M lithium;quinolin-8-olate Chemical compound [Li+].C1=CN=C2C([O-])=CC=CC2=C1 FQHFBFXXYOQXMN-UHFFFAOYSA-M 0.000 description 1
- 238000004768 lowest unoccupied molecular orbital Methods 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- WLDXVGCMDLRPHA-UHFFFAOYSA-N n,n-diphenyl-4-[4-(n-phenylanilino)phenyl]aniline;9-phenylcarbazole Chemical compound C1=CC=CC=C1N1C2=CC=CC=C2C2=CC=CC=C21.C1=CC=CC=C1N(C=1C=CC(=CC=1)C=1C=CC(=CC=1)N(C=1C=CC=CC=1)C=1C=CC=CC=1)C1=CC=CC=C1 WLDXVGCMDLRPHA-UHFFFAOYSA-N 0.000 description 1
- SBMXAWJSNIAHFR-UHFFFAOYSA-N n-naphthalen-2-ylnaphthalen-2-amine Chemical compound C1=CC=CC2=CC(NC=3C=C4C=CC=CC4=CC=3)=CC=C21 SBMXAWJSNIAHFR-UHFFFAOYSA-N 0.000 description 1
- 229910000480 nickel oxide Inorganic materials 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 1
- KYKLWYKWCAYAJY-UHFFFAOYSA-N oxotin;zinc Chemical compound [Zn].[Sn]=O KYKLWYKWCAYAJY-UHFFFAOYSA-N 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- CSHWQDPOILHKBI-UHFFFAOYSA-N peryrene Natural products C1=CC(C2=CC=CC=3C2=C2C=CC=3)=C3C2=CC=CC3=C1 CSHWQDPOILHKBI-UHFFFAOYSA-N 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 229920001197 polyacetylene Polymers 0.000 description 1
- 229920000767 polyaniline Polymers 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920000128 polypyrrole Polymers 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000001725 pyrenyl group Chemical group 0.000 description 1
- WVIICGIFSIBFOG-UHFFFAOYSA-N pyrylium Chemical compound C1=CC=[O+]C=C1 WVIICGIFSIBFOG-UHFFFAOYSA-N 0.000 description 1
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 1
- 125000006413 ring segment Chemical group 0.000 description 1
- YYMBJDOZVAITBP-UHFFFAOYSA-N rubrene Chemical compound C1=CC=CC=C1C(C1=C(C=2C=CC=CC=2)C2=CC=CC=C2C(C=2C=CC=CC=2)=C11)=C(C=CC=C2)C2=C1C1=CC=CC=C1 YYMBJDOZVAITBP-UHFFFAOYSA-N 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000000935 solvent evaporation Methods 0.000 description 1
- PJANXHGTPQOBST-UHFFFAOYSA-N stilbene Chemical compound C=1C=CC=CC=1C=CC1=CC=CC=C1 PJANXHGTPQOBST-UHFFFAOYSA-N 0.000 description 1
- 235000021286 stilbenes Nutrition 0.000 description 1
- 125000000547 substituted alkyl group Chemical group 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- IFLREYGFSNHWGE-UHFFFAOYSA-N tetracene Chemical compound C1=CC=CC2=CC3=CC4=CC=CC=C4C=C3C=C21 IFLREYGFSNHWGE-UHFFFAOYSA-N 0.000 description 1
- 238000002207 thermal evaporation Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 150000004882 thiopyrans Chemical class 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 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
- 238000001771 vacuum deposition Methods 0.000 description 1
- IBYSTTGVDIFUAY-UHFFFAOYSA-N vanadium monoxide Chemical compound [V]=O IBYSTTGVDIFUAY-UHFFFAOYSA-N 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
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Description
2ΣniLicosθi+(Qm1+Qm2)λ/2π=mλ 式1
ここで、
niは有機EL要素中のi番目の副層の屈折率であり、Liはその厚さであり、
θはOLEDデバイスの平面に対する法線を基準に測定したi番目の副層中の光の角度であり、
Qm1及びQm2は、それぞれ2つの有機EL要素と金属電極との境界面でのラジアンを単位とする位相シフトであり、
λはデバイスから放射される共振波長であり、
mは負でない整数である。
異なる副層のθi(デバイスの外部で放射される光の角度を含む)は独立ではなく、スネルの法則ni sinθi=nj sinθjにより互いに関連する。
Q1及びQ2は別個に選択された芳香族第三級アミン部分であり、
Gは炭素−炭素結合のアリーレン、シクロアルキレン、またはアルキレン基といった結合基である。
R1及びR2は各々別個に水素原子、アリール基、またはアルキル基を表すか、またはR1及びR2は共にシクロアルキル基を完成する原子を表し、
R3及びR4は各々別個にアリール基を表し、そのアリール基は、構造式Cによって示されるようなジアリール置換アミノ基によって置換される。
各Areは、フェニレンまたはアントラセン部分といった別個に選択されたアリーレン基であり、
nは1〜4の整数であり、
Ar、R7、R8、及びR9は別個に選択されたアリール基である。
1,1−ビス(4−ジ−p−トリルアミノフェニル)シクロヘキサン
1,1−ビス(4−ジ−p−トリルアミノフェニル)−4−フェニルシクロヘキサン
4,4’−ビス(ジフェニルアミノ)クアドリフェニル
ビス(4−ジメチルアミノ−2−メチルフェニル)−フェニルメタン
N,N,N−トリ(p−トリル)アミン
4−(ジ−p−トリルアミノ)−4’−[4(ジ−p−トリルアミノ)−スチリル]スチルベン
N,N,N’,N’−テトラ−p−トリル−4−4’−ジアミノビフェニル
N,N,N’,N’−テトラフェニル−4,4’−ジアミノビフェニル
N−フェニルカルバゾール
ポリ(N−ビニルカルバゾール)
N,N’−ジ−1−ナフタレニル−N,N’−ジフェニル−4,4’−ジアミノビフェニル
4,4’−ビス[N−(1−ナフチル)−N−フェニルアミノ]ビフェニル
4,4”−ビス[N−(1−ナフチル)−N−フェニルアミノ]p−テルフェニル
4,4’−ビス[N−(2−ナフチル)−N−フェニルアミノ]ビフェニル
4,4’−ビス[N−(3−アセナフテニル)−N−フェニルアミノ]ビフェニル
1,5−ビス[N−(1−ナフチル)−N−フェニルアミノ]ナフタレン
4,4’−ビス[N−(9−アンスリル)−N−フェニルアミノ]ビフェニル
4,4”−ビス[N−(1−アンスリル)−N−フェニルアミノ]−p−テルフェニル
4,4’−ビス[N−(2−フェナンスリル)−N−フェニルアミノ]ビフェニル
4,4’−ビス[N−(8−フルオランテニル)−N−フェニルアミノ]ビフェニル
4,4’−ビス[N−(2−ピレニル)−N−フェニルアミノ]ビフェニル
4,4’−ビス[N−(2−ナフタセニル)−N−フェニルアミノ]ビフェニル
4,4’−ビス[N−(2−ペリレニル)−N−フェニルアミノ]ビフェニル
4,4’−ビス[N−(1−コロレニル)−N−フェニルアミノ]ビフェニル
2,6−ビス(ジ−p−トリルアミノ)ナフタレン
2,6−ビス[ジ−(1−ナフチル)アミノ]ナフタレン
2,6−ビス[N−(1−ナフチル)−N−(2−ナフチル)アミノ]ナフタレン
N,N,N’,N’−テトラ(2−ナフチル)−4−4”−ジアミノ−p−テルフェニル
4,4’−ビス{N−フェニル−N−[4−(1−ナフチル)−フェニル]アミノ}ビフェニル
4,4’−ビス「N−フェニル−N−(2−ピレニル)アミノ]ビフェニル
2,6−ビス[N,N−ジ(2−ナフチル)アミン]フルオレン
1,5−ビス[N−(1−ナフチル)−N−フェニルアミノ]ナフタレン
Mは金属を表し、
nは1〜3の整数であり、
Zは発生する都度別個に、少なくとも2つの縮合芳香環を有する核を完成する原子を表す。
CO−1:アルミニウムトリスオキシン[別名、トリス(8−キノリノラト)アルミニウム(III)]
CO−2:マグネシウムビスオキシン[別名、ビス(8−キノリノラト)マグネシウム(II)]
CO−3:ビス[ベンゾ{f}−8−キノリノラト)亜鉛(II)
CO−4:ビス(2−メチル−8−キノリノラト)アルミニウム(III)−μ−オキソ−ビス(2−メチル−8−キノリノラト)アルミニウム(III)
CO−5:インジウムトリスオキシン[別名、トリス(8−キノリノラト)インジウム]
CO−6:アルミニウムトリス(5−メチルオキシン)[別名、トリス(5−メチル−8−キノリノラト)アルミニウム(III)]
CO−7:リチウムオキシン[別名、(8−キノリノラト)リチウム(I)]
CO−8:ガリウムオキシン[別名、トリス(8−キノリノラト)ガリウム(III)]
CO−9:ジルコニウムオキシン[別名、テトラ(8−キノリノラト)ジルコニウム(IV)]
グループ1:水素、または1個〜24個の炭素原子のアルキル
グループ2:5個〜20個の炭素原子のアリールまたは置換アリール
グループ3:アンスラセニル、ピレニル、またはペリレニルの縮合芳香環を完成するために必要な4個〜24個の炭素原子
グループ4:フリル、チェニル、ピリジル、キノリニルまたは他の複素環系の縮合複素芳香環を完成するために必要な5個〜24個の炭素原子のヘテロアリールまたは置換ヘテロアリール
グループ5:1個〜24個の炭素原子のアルコキシルアミノ、アルキルアミノ、またはアリールアミノ
グループ6:フッ素、塩素、臭素またはシアン
nは3〜8の整数であり、
ZはO、NRまたはSであり、
R’は水素、例えばプロピル、t−ブチル、ヘプチル等といった1個〜24個の炭素原子のアルキル、例えばフェニル及びナフチル、フリル、チェニル、ピリジル、キノリニル及び他の複素環系といった5個〜20個の炭素原子のアリールまたはヘテロ原子置換アリール、またはクロロ、フルオロといったハロゲン、または縮合芳香環を完成するために必要な原子であり、
Lは、アルキル、アリール、置換アルキル、または置換アリールを含む結合単位であり、多数のベンザゾールを互いに共役的または非共役的に接続する。
アノードの上に配置された正孔注入層40、
正孔注入層40の上に配置され、スペクトルの黄色領域の光を放射するためルブレン化合物によってドープした正孔輸送層45、
正孔輸送層45の上に配置され、青色光を放射する化合物によってドープした発光層50、及び
電子輸送層55、
を含むことによって達成してよい。
2nALA+nTLT=(mA+1/2)λ 式2
ここで、
nA及びLAは、それぞれ吸収低減層の屈折率及び厚さであり、
nT及びLTは、それぞれ半透明アノードの屈折率の実数部及び厚さであり、
mAは負でない整数である。
現実的である限り小さい、普通0及び通常2未満のmAを有するのが好適である。トップ電極90を通じて光を放射するOLEDデバイスの場合、吸収低減層はトップ電極90の上に配置する。
Apparatus Including a Series of OLED Devices”)」という名称の2002年8月7日出願の同じ譲受人に譲受された米国特許出願第10/213,853号、ロナルドS.コック(Ronald S.Cok)他による「面照射のための直列接続OLEDデバイス(“Serially Connecting OLED Devices for Area Illumination”)」という名称の2002年8月7日出願の同じ譲受人に譲受された米国特許出願第10/214,035号、及び応用物理通信(Appl.Phys.Lett.)82、2580(2003)で開示されているようなモノリシック一体式直列接続構造も、本発明と組み合わせて有効に使用してよい。本発明によれば、モノリシックに直列接続された2つかそれ以上の個別のOLED要素を備えるOLEDデバイスを光集積器と組み合わせて白色OLED装置を達成する。デバイス中の個別のOLED要素は各々、2つの金属の反射性電極の間に配置された白色有機EL要素を有するマイクロキャビティOLEDデバイスとして構成する。マイクロキャビティOLEDデバイスに関するこれまでの全ての議論はデバイス中の個別のOLED要素にも適用可能である。
従来の非マイクロキャビティOLEDの準備は以下の通りである。透明なITO導電層でコーティングした1mm厚のガラス基板を市販のガラス洗浄工具を使用して清掃及び乾燥した。ITOの厚さは約42nmであり、ITOのシート抵抗は約68Ω/スクエアである。次いで、ITOの表面を酸化性プラズマで処理し、表面をアノードとして調整した。RFプラズマ処理チャンバ内でCHF3ガスを分解することによって、1nm厚のCFx、ポリマー化フルオロカーボン、の層を、清掃したITOの表面に正孔注入層として蒸着した。そして、基板を真空蒸着チャンバ内に移動し、基板の上部に他の全ての層を蒸着した。約10-6トールの真空下で加熱したボートから昇華することによって、以下の層を以下の順序で蒸着した。
1)正孔輸送層、107nm厚、N,N’−ジ(ナフタレン−1−yl)−N,N’−ジフェニル−ベンジジン(NPB)を含む。
2)電子輸送層(発光層の役目も果たす)、62nm厚、トリス(8−ヒドロキシキノリン)アルミニウム(III)(Alq)。
3)電子注入層、1nm厚、Liを含む。
4)カソード、約50nm厚、Agを含む。
これらの層を蒸着した後、カプセル化のためデバイスを蒸着チャンバからドライボックス内に移動した。完成したデバイス構造をガラス/ITO(42)/CFx(1)/NPB(107)/Alq(62)/Li(1)/Ag(50)として示す。
従来のマイクロキャビティOLEDを以下の通り製造した。ガラス基板を、約4mトールの圧力のAr中でのDCスパッタリング処理によって、Agを含む、22.5nm厚の半透明のアノード層によってコーティングした。酸化モリブデン、MoO3、の0.5nm厚の層を、熱気化を使用して、真空チャンバ内で、Agアノード層の表面上に正孔注入層として蒸着した。約10-6トールの真空下で加熱したボートから昇華することによって、以下の層を以下の順序で蒸着した。
1)正孔輸送層、430nm厚、N,N’−ジ(ナフタレン−1−yl)−N,N’−ジフェニル−ベンジジン(NPB)を含む。
2)電子輸送層(発光層の役目も果たす)、70nm厚、トリス(8−ヒドロキシキノリン)アルミニウム(III)(Alq)を含む。
3)電子注入層、1nm厚、Liを含む。
4)カソード、約75nm厚、Agを含む。
これらの層を蒸着した後、カプセル化のためデバイスを蒸着チャンバからドライボックス内に移動した。完成したデバイス構造をガラス/Ag(22.5)/MoO3(0.5)/NPB(430)/Alq(70)/Li(1)/Ag(75)として示す。
例2の比較例のマイクロキャビティOLEDデバイスを使用して本例の広帯域放射OLED装置を構成した。1片の0.125mm厚のテフロン(登録商標)箔を、真空グリースを使用して、例2のマイクロキャビティOLEDデバイスのガラス基板の外部表面に取り付けた。異なる角度で得られた出力スペクトルを図8に示す。放射が示す角度依存はほとんどなく、スペクトル出力は例1及び図6に示すようなAlq発光体のものに類似していた。全ての角度にわたる総集積出力は同様の形状を示し、450nm〜650nmの広い波長範囲に及ぶと予想される。この例では緑色のAlq有機EL要素を使用しているため、結果として得られる出力は緑色であって白色ではなかった。しかし、発光体のスペクトル出力を再現するこのOLED装置の能力は、白色発光有機EL要素を使用していたならば白色発光OLED装置が得られたであろうことを明らかに実証した。この例では、0.125mmのテフロン(登録商標)箔は、集積要素及びTIRF両方の役目を果たした。これは装置のスペクトル出力を拡大し角度依存を低減した。
20 基板
25 総内部反射フラストレータ
30 ボトム電極
35 透明な導電性スペーサ層
40 正孔注入層
45 正孔輸送層
50 発光層
55 電子輸送層
60 電子注入層
70 有機EL要素
85 ボトム電極
90 トップ電極
95 光集積要素
100 白色マイクロキャビティOLED装置
105 光
110 反射光
115 光
120 部分反射光
125 部分透過光
130 放射光
140 部分透過光
200 OLEDデバイス
210 第1のカラー発光体
220 第2のカラー発光体
Claims (3)
- マイクロキャビティOLEDデバイスと光集積要素とを備える白色発光OLED装置であって、前記マイクロキャビティOLEDデバイスが白色発光有機EL要素を有し、前記マイクロキャビティOLEDデバイスが角度依存狭帯域放射を有するよう構成され、前記光集積要素が前記マイクロキャビティOLEDデバイスからの異なる角度からの角度依存狭帯域放射を集積して白色発光を形成し、さらに
前記マイクロキャビティOLEDデバイスが、
a)第1の表面と第2の表面とを有する基板と、
b)前記基板の前記第1の表面の上に配置された金属のボトム電極と、
c)前記金属のボトム電極から間隔の開いた金属のトップ電極と、
d)前記金属のトップ電極と前記金属のボトム電極との間に配置され、前記金属の電極の一方が半透明でありもう一方が光学濃度1.5以上の反射性である白色発光有機EL要素とを備え、
e)前記金属のボトム電極と前記金属のトップ電極とが白色発光を角度依存狭帯域光に変換するマイクロキャビティ構造を形成する、白色発光OLED装置。 - 前記マイクロキャビティOLEDデバイスが、法線方向で600nmを越えるかまたは500nm未満のピーク放射波長を有するよう調整される、請求項1に記載の白色発光OLED装置。
- 前記光集積要素が光散乱構造を有する、請求項1に記載の白色発光OLED装置。
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WO2005060016A3 (en) | 2005-09-15 |
US7268485B2 (en) | 2007-09-11 |
US20050073228A1 (en) | 2005-04-07 |
CN1864283A (zh) | 2006-11-15 |
JP2007507851A (ja) | 2007-03-29 |
CN100505371C (zh) | 2009-06-24 |
JP2011054583A (ja) | 2011-03-17 |
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