- Heteroaryl derivatives and organic electroluminescent device including the same
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A heteroaryl derivative is provided to effectively absorb an external light source in UV area, thereby minimizing damage to organic materials inside the organic electroluminescent device. 1 Is a cross-sectional view of an organic electroluminescence devic
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Paragraph 0195-0197
(2021/07/13)
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- Boron-nitrogen heteropolyaromatic ring compound and application thereof
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The invention relates to the technical field of display, in particular to a boron-nitrogen heteropolyaromatic ring compound and application thereof. The boron-nitrogen heteropolyaromatic ring compoundhas a structure as shown in a formula I, the compound is based on interaction between a boron-nitrogen structural unit and a surrounding aromatic ring or heteroaromatic ring. The boron-nitrogen heteropolyaromatic ring compound has higher glass transition temperature, higher and balanced charge mobility and more suitable single-triplet state energy, and when the boron-nitrogen heteropolyaromatic ring compound is used as a light-emitting main body material of an organic light-emitting device, the light-emitting efficiency of the device can be greatly improved, and the working voltage of the device is effectively reduced.
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Paragraph 0122-0126
(2020/08/29)
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- Organic electroluminescent compound and preparation method thereof
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The invention provides an organic electroluminescent compound and a preparation method thereof. The structure of the organic electroluminescent compound is shown as the following formula (I) shown inthe specification. The organic compound disclosed by the invention can be used as a hole transport layer material or an electron barrier layer material, and can also be used as a hole barrier layer material, an electron transport layer material, a main body material, a blue doping material and a covering layer material, and can reduce driving voltage, improve luminous efficiency, brightness, thermal stability and color purity and prolong the service lifetime of the device when being used in the organic electroluminescent device.
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Paragraph 0091-0095
(2020/10/16)
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- AROMATIC HETEROCYCLE DERIVATIVE AND ORGANIC ELECTROLUMINESCENT ELEMENT USING SAME
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An aromatic heterocyclic derivative represented by the following formula (1)-1 or (1)-2: wherein in the formula (1)-1 or (1)-2, A is a substituted or unsubstituted nitrogen-containing heterocyclic group including 2 to 30 ring carbon atoms; B is a substituted or unsubstituted aromatic hydrocarbon group including 6 to 30 ring carbon atoms or a substituted or unsubstituted aromatic heterocyclic group including 2 to 30 ring carbon atoms; n is an integer of 2 or more; and Czs are independently an aromatic heterocyclic group including a predetermined structure.
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Paragraph 0183; 0184
(2013/12/02)
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- MATERIAL FOR ORGANIC ELECTROLUMINESCENCE DEVICES AND ORGANIC ELECTROLUMINESCENCE DEVICE USING THE MATERIAL
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A material for organic electroluminescence devices comprising a compound in which a heterocyclic group having nitrogen is bonded to an arylcarbazolyl group or a carbazolylalkylene group and an organic electroluminescence device comprising an anode, a cathode and an organic thin film layer comprising at least one layer and disposed between the anode and the cathode, wherein at least one layer in the organic thin film layer comprises the material for organic electroluminescence devices described above. The material can provide an organic electro-luminescence device emitting bluish light with a high purity of color. The organic electroluminescence device uses the material.
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Page/Page column 42-43
(2013/02/27)
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