- High-efficiency blue phosphorescent organic light-emitting diodes using a carbazole and carboline-based host material
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A novel bipolar host 9-(4-(9H-pyrido[2,3-b]indol-9-yl)phenyl)-9H-3, 9′-bicarbazole (pBCb2Cz) was prepared for high efficiency blue phosphorescent organic light-emitting diodes (PhOLEDs), a high triplet energy (ET) material, employing electron-deficient α-carboline. pBCb2Cz (ET = 2.93 eV) was effective as a host material for FIrpic- and FCNIrpic-based blue PhOLEDs, and highest quantum efficiencies of 23.0 and 16.2%, respectively, were achieved.
- Kim, Sun Jae,Kim, Young Jae,Son, Young Hoon,Hur, Jung A.,Um, Hyun Ah,Shin, Jicheol,Lee, Tae Wan,Cho, Min Ju,Kim, Jung Keun,Joo, Sunghoon,Yang, Joong Hwan,Chae, Gee Sung,Choi, Kihang,Hyuk Kwon, Jang,Hoon Choi, Dong
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- BENZIMIDAZOLE DERIVATIVE AND ORGANIC LIGHT EMITTING DEVICE COMPRISING SAME
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The present invention relates to a benzimidazole derivative and an organic electroluminescent device comprising the same, wherein a novel benzimidazole derivative of the present invention having the structure of chemical formula 1, has excellent luminous efficiency. Therefore, the organic electroluminescent device comprising the same has excellent brightness, color purity, and luminous efficiency, and also enables low voltage driving.
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Paragraph 0057-0060
(2020/08/01)
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- Organic compound comprising boron and organic electroluminescent device comprising the same
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The present invention relates to an organic material comprising a boron atom and an organic electroluminescent device using the same. The organic electroluminescent device of the present invention can obtain light of short wavelengths with high efficiency and can lower the driving voltage.COPYRIGHT KIPO 2020
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Paragraph 0202; 0203
(2019/12/03)
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- Novel pyridinyl triazolopyridine derivatives and use thereof
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The present invention relates to novel pyridinyl-triazolopyridine derivatives and uses thereof, and more specifically, to an aromatic organic material including pyrimidine and an organic electroluminescent device using the same. According to an embodiment of the present invention, the organic electroluminescent device using the aromatic organic material including the pyrimidine can obtain light at a short wavelength in a highly efficient manner while lowering the driving voltage.COPYRIGHT KIPO 2019
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Paragraph 0134-0138
(2019/01/30)
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- BENZIMIDAZOLO[1,2-A]BENZIMIDAZOLE CARRYING TRIAZINE GROUPS FOR ORGANIC LIGHT EMITTING DIODES
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Benzimidazolo[1,2-a]benzimidazole carrying triazine groups, an organic electronic device, comprising said benzimidazolo[1,2-a]benzimidazole carrying triazine groups, an electron transport layer, an electron injection layer, or an emitting layer comprising said benzimidazolo[1,2-a]benzimidazole carrying triazine groups, an apparatus selected from the group consisting of stationary visual display units; mobile visual display units; illumination units; keyboards; items of clothing; furniture; wallpaper, comprising comprising said benzimidazolo[1,2-a]benzimidazole carrying triazine groups, or said electron transport layer, said electron injection layer, or said emitting layer, the use of said benzimidazolo[1,2-a]benzimidazole carrying triazine groups, for organic electroluminescent devices, electrophotographic photoreceptors, photoelectric converters, organic solar cells, switching elements, organic light emitting field effect transistors, image sensors or dye lasers, and a process for the preparation of said benzimidazolo[1,2ajbenzimidazole carrying triazine groups.
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Page/Page column 279; 287
(2017/08/01)
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- BENZIMIDAZOLO[1,2-A]BENZIMIDAZOLE CARRYING BENZIMIDAZOLO[1,2-A]BENZIMIDAZOLYL GROUPS, CARBAZOLYL GROUPS, BENZOFURANE GROUPS OR BENZOTHIOPHENE GROUPS FOR ORGANIC LIGHT EMITTING DIODES
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Benzimidazolo[1,2-a]benzimidazole carrying benzimidazolo[1,2-a]benzimidazolylyl groups, carbazolyl groups, dibenzofurane groups, dibenzothiophene groups, fluorenyl groups or dibenzosilolyl groups, an organic electronic device, comprising said benzimidazolo[1,2- a]benzimidazole carrying groups, a charge transport layer, charge blocking layer, charge/exciton blocking layer, or an emitting layer comprising said benzimidazolo[1,2-a]benzimidazole carrying groups, an apparatus selected from the group consisting of stationary visual display units; mobile visual display units; illumination units; keyboards; items of clothing; furniture; wallpaper, comprising said organic electronic device, or said charge transport layer, said charge/exciton blocking layer, or said emitting layer, the use of said benzimidazolo[1,2-a]benzimidazole carrying groups for organic electroluminescent devices, electrophotographic photoreceptors, photoelectric converters, organic solar cells, switching elements, organic light emitting field effect transistors, image sensors or dye lasers, and a process for the preparation of said benzimidazolo[1,2-a]benzimidazole carrying groups.
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Page/Page column 282
(2017/08/01)
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- Organic compound comprising pyrimidine and organic electroluminescent device comprising the same
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The present invention relates to an organic aromatic organic compound containing pyridine, and an organic electroluminescent device using the same, wherein the compound may be used as thermally activated delayed fluorescent (TADF) material due to having little energy difference between an excited singlet state and an excited triplet state. Further, the compound of the present invention may be used in an organic light-emitting diode to improve efficiency of the organic light-emitting diode and lower driving voltage thereof.COPYRIGHT KIPO 2017
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Paragraph 0104; 0105; 0107; 0108
(2018/02/10)
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- NITRILE SUBSTITUTED DIBENZOFURANS
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The present invention relates to compounds of formula a process for their production and their use in electronic devices, especially electroluminescent devices. When used as electron transport material, hole blocking material and/or host material for phosphorescent emitters in electroluminescent devices, the compounds of formula I may provide improved efficiency, stability, manufacturability, or spectral characteristics of electroluminescent devices.
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Page/Page column 64; 65
(2016/09/26)
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- 2,9-FUNCTIONALIZED BENZIMIDAZOLO[1,2-A]BENZIMIDAZOLES AS HOSTS FOR ORGANIC LIGHT EMITTING DIODES (OLEDS)
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The present invention relates to compounds of formula (I), a process for their production and their use in electronic devices, especially electroluminescent devices. When used as charge transport material and/or host material for phosphorescent emitters in electroluminescent devices, the compounds of formula (I) may provide improved efficiency and reduced driving voltage of electroluminescent devices.
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Page/Page column 92
(2016/04/05)
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- NEW DIBENZOFURANS AND DIBENZOTHIOPHENES
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The present invention relates to compounds of formula (I) which are characterized in that they are substituted by at least one nitrile substituted carbazolyl group and their use in electronic devices, especially electroluminescent devices. When used as el
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Page/Page column 99
(2015/11/11)
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- BENZIMIDAZOLO[2,1-B][1,3]BENZOTHIAZOLES FOR ELECTRONIC APPLICATIONS
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The present invention relates to compounds of formula (I), a process for their production and their use in electronic devices, especially electroluminescent devices. When used as charge transport material and/or host material for phosphorescent emitters in electroluminescent devices, the compounds of formula (I) may provide improved efficiency, stability, manufacturability and/or spectral characteristics of electroluminescent devices.
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Page/Page column 117
(2015/02/25)
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- AZADIBENZOTHIOPHENES FOR ELECTRONIC APPLICATIONS
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The present invention relates to compounds of formula (I), which are characterized in that they are substituted by benzimidazo[1,2-a]benzimidazo-5-yl and/or benzimidazo[1,2-a]benzimidazo-2,5- ylene groups and in that at least one of the substituents B1, B2, B3, B4, B5, B6, B7 and B8 represents N; a process for their production and their use in electronic devices, especially electroluminescent devices. When used as host material for phosphorescent emitters in electroluminescent devices, the compounds of formula (I) may provide improved efficiency, stability, manufacturability, or spectral characteristics of electroluminescent devices.
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Page/Page column 150; 151
(2015/05/19)
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- BENZIMIDAZO[1,2-A]BENZIMIDAZOLE DERIVATIVES FOR ELECTRONIC APPLICATIONS
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The present invention relates to compounds of formula (I), a process for their production and their use in electronic devices, especially electroluminescent devices. When used as host material for phosphorescent emitters in electroluminescent devices, the compounds of formula (I) may provide improved efficiency, stability, manufacturability, or spectral characteristics of electroluminescent devices.
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Page/Page column 60
(2014/02/15)
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- CARBAZOLE-CONTAINING MATERIALS IN PHOSPHORESCENT LIGHT EMITTING DIODES
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Carbazole-containing compounds are provided. In particular, the compounds are oligocarbazole-containing compounds having an unsymmetrical structure. The compounds may be useful in organic light emitting devices, in particular as hosts in the emissive layer of such devices.
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