JP6140675B2 - 白色有機発光素子 - Google Patents
白色有機発光素子 Download PDFInfo
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- JP6140675B2 JP6140675B2 JP2014249793A JP2014249793A JP6140675B2 JP 6140675 B2 JP6140675 B2 JP 6140675B2 JP 2014249793 A JP2014249793 A JP 2014249793A JP 2014249793 A JP2014249793 A JP 2014249793A JP 6140675 B2 JP6140675 B2 JP 6140675B2
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- 239000002019 doping agent Substances 0.000 claims description 84
- 230000005525 hole transport Effects 0.000 claims description 26
- 229910010272 inorganic material Inorganic materials 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 21
- 239000011147 inorganic material Substances 0.000 claims description 20
- 238000004768 lowest unoccupied molecular orbital Methods 0.000 claims description 19
- 229910052751 metal Inorganic materials 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 16
- 229910052783 alkali metal Inorganic materials 0.000 claims description 4
- 150000001340 alkali metals Chemical class 0.000 claims description 4
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 4
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 4
- 125000003118 aryl group Chemical group 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 125000000623 heterocyclic group Chemical group 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 209
- 230000000052 comparative effect Effects 0.000 description 45
- 239000000126 substance Substances 0.000 description 14
- 230000008859 change Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 238000009825 accumulation Methods 0.000 description 6
- DKHNGUNXLDCATP-UHFFFAOYSA-N dipyrazino[2,3-f:2',3'-h]quinoxaline-2,3,6,7,10,11-hexacarbonitrile Chemical compound C12=NC(C#N)=C(C#N)N=C2C2=NC(C#N)=C(C#N)N=C2C2=C1N=C(C#N)C(C#N)=N2 DKHNGUNXLDCATP-UHFFFAOYSA-N 0.000 description 6
- 230000007423 decrease Effects 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 4
- 238000010549 co-Evaporation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000009191 jumping Effects 0.000 description 3
- 230000027756 respiratory electron transport chain Effects 0.000 description 3
- 230000001629 suppression Effects 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 150000002484 inorganic compounds Chemical class 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- -1 quinone series compound Chemical class 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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Description
110 正極
120 第1のスタック
130 電荷生成層
133 n型電荷生成層
137 p型電荷生成層
140 第2のスタック
150 負極
123 正孔輸送層
125 発光層
127 電子輸送層
Claims (13)
- 互いに対向した正極と負極、
前記正極と前記負極との間にそれぞれ正孔輸送層、発光層及び電子輸送層を含む複数のスタック、並びに
前記複数のスタックの間に配置されたn型電荷生成層及びp型電荷生成層
を含んで構成され、
前記n型電荷生成層は、第1の有機物ホスト及びn型ドーパントを含み、
前記p型電荷生成層は、前記第1の有機物ホストのLUMOエネルギー準位より小さいかまたは同じLUMOエネルギー準位を有する第2の有機物ホストと、1体積%〜20体積%の、金属を含む無機ドーパントとからなり、
前記無機ドーパントに含まれる金属の仕事関数は、前記n型ドーパントと同じかまたはそれより大きく、その絶対値は前記第2の有機ホストのLUMOエネルギー準位の絶対値より小さい値であり、2.9eV〜5.5eVであることを特徴とする白色有機発光素子。 - 前記n型ドーパントは、アルカリ金属またはアルカリ土類金属であることを特徴とする、請求項1に記載の白色有機発光素子。
- 前記無機ドーパントは、MgF2、MgCl2及びZnF2のうちいずれか一つであることを特徴とする、請求項1に記載の白色有機発光素子。
- 前記無機ドーパントは、前記p型電荷生成層内で、前記n型電荷生成層に接してドーピングされたことを特徴とする、請求項1に記載の白色有機発光素子。
- 前記正極と前記負極との間に2個のスタックを含み、第1のスタックは前記正極と隣接し、第2のスタックは前記負極と隣接し、前記無機ドーパントは、前記p型電荷生成層内で前記第2のスタックに接してドーピングされたことを特徴とする、請求項1に記載の白色有機発光素子。
- 前記無機ドーパントは、前記p型電荷生成層の全体厚さをLとしたとき、前記n型電荷生成層と接した面からまたは前記n型電荷生成層と接していない前記p型電荷生成層の表面から0.1L〜Lの厚さに分布されたことを特徴とする、請求項1に記載の白色有機発光素子。
- 前記無機ドーパントは、前記p型電荷生成層内で互いに離隔した複数の領域に分布されたことを特徴とする、請求項1に記載の白色有機発光素子。
- 前記正極と前記負極との間に2個のスタックを含み、
前記正極と隣接した第1のスタックの発光層は青色発光層で、
前記負極と隣接した第2のスタックの発光層は、燐光発光層で、黄緑色、黄色がかかったグリーン色または赤緑色を発光することを特徴とする、請求項1に記載の白色有機発光素子。 - 前記第2のスタックの燐光発光層は、少なくとも一つの正孔輸送物質のホストと、少なくとも一つの電子輸送物質のホストとを含むことを特徴とする、請求項9に記載の白色有機発光素子。
- 前記第1の有機物ホストは、ヘテロ環(heterocyclic)を含む縮合芳香族環(Fused Aromatic Ring)で電子輸送特性を有する化合物であることを特徴とする、請求項1に記載の白色有機発光素子。
- 前記n型ドーパントは、前記n型電荷生成層の全体体積の0.4%〜3%の含量で含まれることを特徴とする、請求項1に記載の白色有機発光素子。
- 各スタックの発光層に隣接した正孔輸送層と電子輸送層の三重項準位は、発光層のホストの三重項準位より0.01eV〜0.4eV高いことを特徴とする、請求項1に記載の白色有機発光素子。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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KR10-2013-0168251 | 2013-12-31 | ||
KR1020130168251A KR102203774B1 (ko) | 2013-12-31 | 2013-12-31 | 백색 유기 발광 소자 |
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JP2015130335A JP2015130335A (ja) | 2015-07-16 |
JP6140675B2 true JP6140675B2 (ja) | 2017-05-31 |
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US (1) | US9281491B2 (ja) |
EP (1) | EP2889929B1 (ja) |
JP (1) | JP6140675B2 (ja) |
KR (1) | KR102203774B1 (ja) |
CN (1) | CN104752473B (ja) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
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KR102200388B1 (ko) | 2014-06-23 | 2021-01-07 | 엘지디스플레이 주식회사 | 백색 유기 발광 소자 |
EP3220720A1 (en) * | 2014-11-14 | 2017-09-20 | Konica Minolta, Inc. | Organic electroluminescence element |
JP2016171047A (ja) * | 2015-03-16 | 2016-09-23 | パイオニア株式会社 | 発光装置 |
KR102420453B1 (ko) * | 2015-09-09 | 2022-07-13 | 엘지디스플레이 주식회사 | 유기발광 표시장치 및 이를 적용한 차량용 조명장치 |
KR102574052B1 (ko) | 2015-11-19 | 2023-09-04 | 엘지디스플레이 주식회사 | 유기발광 표시장치 |
KR102431706B1 (ko) * | 2015-12-18 | 2022-08-10 | 엘지디스플레이 주식회사 | 유기 발광 표시 소자의 스파이스 모델링 방법 및 이를 이용한 시뮬레이션 장치 |
KR20180036437A (ko) * | 2016-09-30 | 2018-04-09 | 엘지디스플레이 주식회사 | 유기 발광 소자 및 이를 이용한 유기 발광 표시 장치 |
CN106783932A (zh) * | 2016-12-30 | 2017-05-31 | 上海天马有机发光显示技术有限公司 | 一种有机发光显示面板及装置 |
CN107887520B (zh) * | 2017-10-30 | 2019-10-01 | 上海天马有机发光显示技术有限公司 | 一种有机发光二极管、显示面板及显示装置 |
CN110518136B (zh) * | 2019-08-30 | 2021-12-14 | 京东方科技集团股份有限公司 | 一种有机电致发光器件、显示面板及显示装置 |
JP2019216290A (ja) * | 2019-10-01 | 2019-12-19 | パイオニア株式会社 | 発光装置 |
CN111092159B (zh) * | 2019-12-13 | 2023-08-11 | 固安翌光科技有限公司 | 一种有机半导体器件及其连接结构 |
KR20210086219A (ko) * | 2019-12-31 | 2021-07-08 | 엘지디스플레이 주식회사 | 유기전기소자, 이를 포함하는 표시패널 및 이를 포함하는 표시장치 |
KR102346601B1 (ko) | 2020-02-26 | 2022-01-03 | 성균관대학교산학협력단 | 운영체제 내 쓰기 순서 보장이 필요한 여러 쓰기 입출력의 처리 속도 향상 방법 |
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