- Organic electroluminescent host material and application thereof in organic electroluminescent device
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The invention relates to an organic electroluminescent host material. In an organic light-emitting device, in order to reduce the problems of exciton quenching, efficiency roll-off, device service life shortening and the like caused by too high exciton concentration in a light-emitting layer, a light-emitting layer structure generally adopts a host-guest doping mode. Aiming at different luminescent material systems/luminescent mechanisms, the requirements on the basic performance of the host material are different. The invention designs an organic electroluminescent host material based on a 3,3'-dicarbazole unit and a 9,9'-diphenyl fluorene steric hindrance group end capping. The dicarbazole unit endows the material with good carrier transport performance, and end group steric hindrance can effectively inhibit local aggregation of a light-emitting guest. According to different luminescent material systems, the polarity and size of molecules are adjusted by changing the difference of carbazole N-substituent (R), so that the comprehensive optimization of the device performance is realized.
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Paragraph 0082-0085
(2021/07/17)
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- Novel bipolar green phosphorescent host material and OLED light-emitting device containing same
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The invention discloses a novel bipolar green phosphorescent host material and an OLED light-emitting device containing the same. The structural general formula of the novel bipolar green phosphorescent host material is shown in the specification. The novel bipolar green phosphorescent host material can greatly reduce the driving voltage of the device, greatly reduce the consumption of electric energy and significantly improve the luminous efficiency. In addition, by reducing the driving voltage, the service life of the organic light-emitting device is remarkably prolonged.
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Paragraph 0041; 0056-0058
(2021/02/10)
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- ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES
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Novel compounds including at least two donor groups GD and at least two acceptor groups GA are disclosed. In these compounds, each donor group GD and acceptor group GA can be the same or different; any pair of donor groups GD is separated by at least one acceptor group GA; any pair of acceptor groups GA is separated by at least one donor group GD; and the total number of the donor groups GD is equal to the total number of the acceptor groups GA. Organic light emitting devices, consumer products, formulations, and chemical structures containing the compounds are also disclosed.
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Paragraph 0139-0140
(2020/02/05)
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- Heterocyclic com pounds and organic light-emitting diode including the same
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The present invention relates to a novel heterocyclic compound and an organic electroluminescent device comprising the same. The heterocyclic compound is represented by the following Chemical Formula 1, and the organic electroluminescent device including the heterocyclic compound has excellent driving voltage, luminous efficiency, and lifespan properties. Chemical Formula 1. (by machine translation)
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Paragraph 0494; 0518-0523
(2021/01/19)
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- COMPOUND AND ORGANIC LIGHT EMITTING DEVICE COMPRISING THE SAME
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The present specification provides a compound of chemical formula 1 and an organic light emitting device comprising the same. The compound according to an embodiment of the present application is used in the organic light emitting device to increase brigh
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Paragraph 0220; 0289-0291
(2020/03/10)
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- Heterocyclic Compound and Organic Light Emitting Device Comprising The Same
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The present invention provides a heterocyclic compound represented by chemical formula 1 and an organic light emitting device including the same. It is possible to improve quantum efficiency.
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Paragraph 0170-0173
(2020/09/09)
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- Heterocyclic com pounds and organic light-emitting diode including the same
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The present invention relates to a novel heterocyclic compound and an organic light emitting element including the same as a light-emitting material and, more specifically, to a heterocyclic compound having excellent light emission properties, such as a driving voltage, luminous efficiency, and lifetime, and an organic light emitting element including the same. Since the organic light-emitting compound according to the present invention is more stable compared to conventional materials and has the excellent light emission properties for a driving voltage or current efficiency, the organic light emitting element including the same can be driven with a low-voltage and light emission efficiency can be improved.
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Paragraph 0206-0211
(2021/01/29)
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- ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES
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The present invention includes novel organic materials comprising indolo[2,3-c]carbazole linked to an aromatic heterocycle via a carbazole linker. These materials may be useful as host materials for PHOLED devices.
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Paragraph 0134
(2019/01/10)
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- Organic Light Emitting Material Having Aromatic Amine Compound and Organic Light Emitting Diode Using The Same
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The present invention relates to a derivative compound used in an organic electroluminescent device and to an organic electroluminscent device using the same. More specifically, the present invention relates to an aromatic compound including an indolocarbazolyl group and a carbazolyl group, and can provide an organic electroluminescent device with lower driving voltage and higher luminous efficiency than an existing counterpart.
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Paragraph 0081; 0087; 0088
(2021/05/26)
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- NOVEL CARBAZOLE COMPOUND AND USE THEREFOR
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PROBLEM TO BE SOLVED: To provide an organic EL element using a novel carbazole compound having the effect of improving luminous efficiency. SOLUTION: A carbazole compound is represented by formula (1)[where L is a 9,9-dimethyl-9,10-dihydroacridinyl group,
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Paragraph 0101
(2018/09/12)
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- PHENAZINE-BASED COMPOUND AND ORGANIC LIGHT EMITTING DEVICE COMPRISING THE SAME
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The present invention refers to including and compound phenacy relates to organic light emitting device. (by machine translation)
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Paragraph 0118-0122
(2016/10/08)
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- AROMATIC AMINE DERIVATIVE AND ORGANIC ELECTROLUMINESCENT ELEMENT
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An aromatic amine derivative represented by the following formula (1). In the formula, Ar1 and Ar2 are independently a substituted or unsubstituted aryl group including 6 to 60 ring carbon atoms; L1 is a substituted or unsubstituted arylene group including 6 to 60 ring carbon atoms; L2 is a single bond or a substituted or unsubstituted arylene group including 6 to 60 ring carbon atoms; R1 and R2 are independently a substituted or unsubstituted aryl group including 6 to 60 ring carbon atoms or the like; n is an integer of 0 to 3; m is an integer of 0 to 4; X1 to X5 are independently a nitrogen atom or CR3; provided that at least one of X1 to X5 are a nitrogen atom; R3 is a hydrogen atom, a substituted or unsubstituted aryl group including 6 to 60 ring carbon atom or the like.
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Paragraph 0283-0284; 0286
(2016/12/01)
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- COMPOUND FOR OPTOELECTRIC DEVICE, ORGANIC OPTOELECTRIC DEVICE INCLUDING THE SAME, AND DISPLAY DEVICE
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The present invention relates to a compound for an organic optoelectronic device, the organic optoelectronic device including the same, and a display device comprising the organic optoelectronic device. Provided is an organic optoelectronic device express
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Paragraph 0451; 0452; 0453; 0454
(2017/01/02)
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- FLUORENE-BASED COMPOUND AND ORGANIC LIGHT EMITTING DEVICE USING THE SAME
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The present invention relates to a fluorene-based compound and an organic light emitting device including the same. In chemical formula 1, if X is O, S, NR_(16), or CR_(17)R_(18), and X is O, S, or CR_(17)R_(18), at least one from R_11 to R_14 is -(L_2)p-
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Paragraph 0148-0151
(2016/10/10)
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- Organic electroluminescent device employing organic light emitting compound as light emitting material
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Provided is an organic electroluminescent device that exhibits an efficient host-dopant energy transfer mechanism, and thus, expresses a certain high-efficiency electroluminescent performance, based on improved electron density distribution. The organic electroluminescent device also overcomes low initial efficiency and short operation life property, and secures high-performance electroluminescent performance with high efficiency and long life property for each color.
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- COMPOUND FOR ORGANIC OPTOELECTRONIC DEVICE, ORGANIC LIGHT EMITTING DIODE INCLUDING THE SAME AND DISPLAY INCLUDING THE ORGANIC LIGHT EMITTING DIODE
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A compound for an organic optoelectronic device and an organic photoelectric device including the same are provided. A compound for an organic optoelectronic device represented by Chemical Formula 1 is provided to fabricate an organic photoelectric device having excellent electrochemical and thermal stability and life-span characteristics, and high luminous efficiency at a low driving voltage.
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Paragraph 0253-0255
(2013/03/26)
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- BIS-CARBAZOLE DERIVATIVE, MATERIAL FOR ORGANIC ELECTROLUMINESCENT ELEMENT AND ORGANIC ELECTROLUMINESCENT ELEMENT USING SAME
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A biscarbazole derivative of the invention is represented by a formula (1A or (1B) below. In the formula (1A) or (1B): A1 represents a substituted or unsubstituted nitrogen-containing heterocyclic group having 1 to 30 ring carbon atoms; A2 represents a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms, or substituted or unsubstituted nitrogen-containing heterocyclic group having 1 to 30 ring carbon atoms; X1 and X2 each are a linking group; Y1 to Y4 each represent a substituent; p and q represent an integer of 1 to 4; and r and s represent an integer of 1 to 3.
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Page/Page column 119-120
(2012/02/15)
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