Abstract: The present invention relates to compounds of formula (1). The compounds are suitable for use in electronic devices, in particular organic electroluminescent devices, comprising these compounds. In some embodiments, the compounds are used as matrix materials for phosphorescent or fluorescent emitters as well as a hole-blocking or electron-transport.
Type:
Grant
Filed:
April 26, 2017
Date of Patent:
May 9, 2023
Assignee:
MERCK PATENT GMBH
Inventors:
Amir Parham, Tobias Grossmann, Jonas Kroeber
Abstract: Novel compounds comprising heteroleptic iridium complexes are provided. The compounds have a particular combination of ligands which includes a single pyridyl dibenzo-substituted ligand. The compounds may be used in organic light emitting devices, particularly as emitting dopants, to provide devices having improved efficiency, lifetime, and manufacturing.
Type:
Grant
Filed:
July 17, 2018
Date of Patent:
April 25, 2023
Assignee:
Universal Display Corporation
Inventors:
Chuanjun Xia, Raymond C. Kwong, Suman Layek
Abstract: Provided is an organic electroluminescent element including a light emitting layer containing, as a dopant, at least two compounds selected from a compound group consisting of a polycyclic aromatic compound represented by the following general formula (1) and a multimer thereof: wherein the symbols are defined in the specification.
Type:
Grant
Filed:
June 12, 2018
Date of Patent:
April 25, 2023
Assignees:
KWANSEI GAKUIN EDUCATIONAL FOUNDATION, SK MATERIALS JNC CO., LTD.
Abstract: Provided herein are aggregation-induced emission luminogens, methods of preparation and use thereof, and devices and sensors comprising the same. The aggregation-induced emission luminogens can exhibit multi-stimuli responsive emissions.
Type:
Grant
Filed:
April 28, 2020
Date of Patent:
April 18, 2023
Assignee:
The Hong Kong University of Science and Technology
Abstract: The present invention relates to compounds of formula (1). The compounds are suitable for use in electronic devices, in particular organic electroluminescent devices, comprising these compounds. In some embodiments, the compounds are used as matrix materials for phosphorescent or fluorescent emitters as well as a hole-blocking or electron-transport materials.
Type:
Grant
Filed:
October 2, 2017
Date of Patent:
April 18, 2023
Assignee:
MERCK PATENT GMBH
Inventors:
Katja Maria Scheible, Fabrice Eckes, Holger Heil, Beate Burkhart, Dominik Joosten, Elvira Montenegro
Abstract: An organic light-emitting device includes: a first electrode; a second electrode facing the first electrode; an emission layer between the first electrode and the second electrode; a hole transport region between the first electrode and the emission layer; and an electron transport region between the emission layer and the second electrode, wherein the electron transport region includes a first compound, at least one selected from the hole transport region and the electron transport region includes a second compound, the first compound is represented by one selected from Formulae 1A to 1D, and the second compound is represented by Formula 2A or Formula 2B:
Type:
Grant
Filed:
July 27, 2016
Date of Patent:
March 28, 2023
Assignee:
Samsung Display Co., Ltd.
Inventors:
Younsun Kim, Seulong Kim, Dongwoo Shin, Jungsub Lee, Naoyuki Ito, Jino Lim, Hyein Jeong
Abstract: The present application, which pertains to the technical field of organic materials, provides a nitrogen-containing compound, an electronic component, and an electronic device. The structure of the nitrogen-containing compound is shown in Formula 1, in which A is the group represented by Formula 2. The nitrogen-containing compound can improve the performance of electronic component.
Type:
Grant
Filed:
June 8, 2020
Date of Patent:
March 21, 2023
Assignee:
SHAANXI LIGHTE OPTOELECTRONICS MATERIAL CO., LTD.
Inventors:
Min Yang, Peng Nan, Lingang Li, Tiantian Ma
Abstract: The present invention relates to bisbenzofuran-fused 2,8-diaminoindeno[1,2-b]fluorene derivatives and related compounds of formula (1) as materials for organic electroluminescent devices (OLEDs).
Type:
Grant
Filed:
November 21, 2017
Date of Patent:
February 21, 2023
Assignee:
MERCK PATENT GMBH
Inventors:
Rouven Linge, Lara-Isabel Rodriguez, Sebastian Meyer, Holger Heil
Abstract: The present specification provides a benzocarbazole-based compound of chemical formula 1 and an organic light-emitting device comprising same. The benzocarbazole-based compound as a material of an organic material layer of the organic light emitting device provides enhanced efficiency, low driving voltage and increased lifetime.
Type:
Grant
Filed:
March 27, 2018
Date of Patent:
February 14, 2023
Assignee:
LG CHEM, LTD.
Inventors:
Minjun Kim, Hyok Joon Kwon, Young Seok Kim, Donghee Kim, Kongkyeom Kim, Min Woo Lee
Abstract: Disclosed are a heterocyclic compound represented by Formula 1 and an organic light emitting device using the same. The heterocyclic compound is used as a material for hole injection layer, hole transport layer, hole injection and transport layer, light emission layer, electron transport layer, or electron injection layer of the organic light emitting device and provides improved efficiency, low driving voltage, and improved lifetime characteristic.
Type:
Grant
Filed:
July 20, 2018
Date of Patent:
February 14, 2023
Assignee:
LG CHEM, LTD.
Inventors:
Jung Ha Lee, Dong Hoon Lee, Tae Yoon Park, Seong Mi Cho, Dong Uk Heo, Min Woo Jung
Abstract: An organic molecule is disclosed having a structure of Formula I: wherein X is O or S; Y is O or S; R1 is selected from the group consisting of: hydrogen, deuterium, C1-C5-alkyl, which is optionally substituted with one or more substituents R5; C6-C60-aryl, which is optionally substituted with one or more substituents R5; and C3-C57-heteroaryl, which is optionally substituted with one or more substituents R5.
Abstract: The disclosure relates to organic electroluminescent elements, compounds for use in the elements, and devices using the elements, which include a compound represented by the following General Formula (1): where R1 to R3 and R6 to R8 each independently represents a hydrogen atom, which may be a deuterium atom, or a substituent with a Hammett substituent constant ?p value of ?0.15 or more, R5, R9 and R10 each independently represents a hydrogen atom or a substituent, L1 represents a divalent linking group, DG1 represents a donor group, and n1 represents 1 or 2, and where R1 to R3, R5 to R10, L1, and DG1 are not bound to each other to form a ring.
Abstract: Provided are an electroluminescent compound having a structure represented by Formula I, a thermally activated delayed fluorescence material and an application thereof. The electroluminescent compound has TADF characteristics and may be applied to a light emitting layer of an OLED device as a thermally activated delayed fluorescence material. The OLED device includes an anode, a cathode, and at least one organic thin film layer comprising the thermally activated delayed fluorescence material in a light emitting layer between the anode and the cathode. The electroluminescent compound effectively reduces the overlap between HOMO and LUMO through special molecular structure design, so that ?EST is reduced to less than 0.25 eV, which satisfies reverse crossing of energy from a triplet state to a singlet state, effectively improves transmission capacities of two kinds of carriers, improves carrier balance, and thus significantly improves light emitting efficiency of the OLED device.
Abstract: The present disclosure provides a boron heterocyclic compound having a structure represented by a chemical formula 1, wherein L1 and L2 are each independently selected from the group consisting of C6-C30 aryl, C6-C30 fused aryl, C4-C30 heteroaryl, and C4-C30 fused heteroaryl; and R1 and R2 are each independently selected from the group consisting of carbazolyl, a carbazolyl-derived group, acridinyl, an acridinyl-derived group, diarylamino, and a diarylamino-derived group. The double boron heterocyclic structure functions as an electron acceptor and a linker. In the present disclosure, by attaching a group having a large steric hindrance to the boron atom of the boron heterocyclic ring, the molecules the compound are prevented from aggregating, and thus a ?-aggregation or excimer formed by direct accumulation of the conjugate plane is avoided, thereby improving the light-emitting efficiency. The present disclosure further provides a display panel and a display apparatus.
Abstract: The present invention relates to an organic electroluminescent device, particularly to an organic light emitting diode (OLED) including an ETL stack of at least two electron transport layers, wherein the first electron transport layer comprises a first electron transport matrix compound and the second electron transport layer comprises second electron transport matrix compound and a redox n-dopant, and a device comprising the OLED.
Type:
Grant
Filed:
October 16, 2017
Date of Patent:
December 20, 2022
Assignees:
Novaled GmbH, Samsung SDI Co. Ltd.
Inventors:
Domagoj Pavicic, Jerome Ganier, Vygintas Jankus, Hyungsun Kim, Byungku Kim, Youngkwon Kim, Younhwan Kim, Hun Kim, Eun Sun Yu, Sung-Hyun Jung
Abstract: An organic electroluminescence device includes a first electrode, a hole transport region on the first electrode, an emission layer on the hole transport region, the emission layer including a polycyclic compound, an electron transport region on the emission layer, and a second electrode on the electron transport region, wherein the polycyclic compound includes an isophthalonitrile derivative, a linker, and a nitrogen-containing group, the linker is a condensed cyclic group of three rings that are independently five-membered or six-membered rings, and each of the isophthalonitrile derivative and the nitrogen-containing group is substituted into a same ring of the linker.
Abstract: Tetraphenylene triarylamine compounds are disclosed, which are novel triarylamine compounds containing tetraphenylene building block. The compounds can be used as charge transporting materials, hole transporting materials, hole injection materials, electron blocking materials, etc., in an electroluminescent device. These novel compounds have good sublimation characters, and can offer more controllable charge transporting performance and good OLED device performance. Also disclosed are an organic electroluminescent device and a formulation.
Abstract: A light-emitting element including a fluorescent material as a light-emitting material and having high emission efficiency is provided. The light-emitting element includes a pair of electrodes and an EL layer provided between the pair of electrodes. The EL layer includes a host material and a guest material. The host material is capable of exhibiting thermally activated delayed fluorescence at room temperature. The guest material is capable of exhibiting fluorescence. The second triplet excitation energy level of the guest material is higher than or equal to the lowest singlet excitation energy level of the guest material.