Abstract: The present invention relates to carbazole derivatives, in particular for use as triplet matrix materials in organic electroluminescent devices. The invention further relates to a method for producing the compounds according to the invention and to electronic devices comprising same.
Type:
Grant
Filed:
June 25, 2013
Date of Patent:
April 27, 2021
Assignee:
Merck Patent GmbH
Inventors:
Amir Hossain Parham, Thomas Eberle, Anja Jatsch, Christof Pflumm, Jonas Valentin Kroeber
Abstract: Organic compounds containing indolocarbazoles as electron donor connected with electron acceptors such aza-triphenylene or dibenzoquinoxaline that can improve the performance of phosphorescent organic light emitting devices are disclosed.
Abstract: A light-emitting device is provided. The device includes a first electrode, a second 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. The hole transport region may include a hole transport layer, which in turn includes a first perovskite compound [A1l][B1m][X1]n with a neutral defect. A hole concentration of the first perovskite compound may be from about 1.0×1016 to about 9×1018 cm?3 at about 25° C.
Type:
Grant
Filed:
March 29, 2017
Date of Patent:
April 13, 2021
Assignee:
SAMSUNG DISPLAY CO., LTD.
Inventors:
Dongchan Kim, Dongkyu Seo, Byoungduk Lee, Yoonhyeung Cho, Yongchan Ju, Wonsuk Han
Abstract: An organic light-emitting device includes a first electrode; a second 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 hole transport region includes a hole auxiliary layer and the electron transport region includes an electron auxiliary layer. The organic light-emitting device may have high efficiency and long life span characteristics.
Type:
Grant
Filed:
July 16, 2015
Date of Patent:
April 13, 2021
Assignee:
Samsung Display Co., Ltd.
Inventors:
Jungsub Lee, Seulong Kim, Younsun Kim, Dongwoo Shin, Naoyuki Ito
Abstract: An organic molecule is disclosed having a first chemical unit consisting of a structure according to Formula I and two second chemical units, which in each case are the same or different in each occurrence, having a structure according to Formula II.
Abstract: A light-emitting element with high emission efficiency and high reliability is provided. The light-emitting element includes a light-emitting layer containing a first organic compound, a second organic compound, and a guest material. The first organic compound has a nitrogen-containing six-membered heteroaromatic skeleton. In the light-emitting layer, the weight ratio of an organic compound having a nitrogen-containing five-membered heterocyclic skeleton with an NH group, a secondary amine skeleton with an NH group, or a primary amine skeleton with an NH group to the first organic compound is less than or equal to 0.03, or alternatively, the weight ratio of the organic compound having a nitrogen-containing five-membered heterocyclic skeleton with an NH group, a secondary amine skeleton with an NH group, or a primary amine skeleton with an NH group to the second organic compound is less than or equal to 0.01.
Abstract: A compound is represented by a formula (1) below, in which k is an integer of 0 or more, m is an integer of 1 or more, n is an integer of 2 or more. L is a substituted or unsubstituted aromatic hydrocarbon ring having 6 to 30 ring carbon atoms, CN is a cyano group, and D1 and D2 are each independently represented by one of a formula (2), a formula (3) and formula (3x) below, D1 and D2 being optionally mutually the same or different.
Abstract: Novel organic materials containing indolocarbazoles as donor connected with electron acceptors such as quinoxaline or dibenzoquinoxaline for PHOLED devices are disclosed.
Type:
Grant
Filed:
May 15, 2017
Date of Patent:
November 17, 2020
Assignee:
UNIVERSAL DISPLAY CORPORATION
Inventors:
Bin Ma, Alan Deangelis, Lichang Zeng, Chuanjun Xia, Jerald Feldman
Abstract: An organic light-emitting device includes: a first electrode; a second electrode; and an organic layer between the first electrode and the second electrode, the organic layer including an emission layer, wherein the emission layer includes a first host and a dopant, the first host is represented by one selected from Formulae 1 and 2, and the dopant is represented by Formula 7: Ar11(L11)a11-(R11)b11]n11??Formula 1 Ar21(L21)a21-(R21)b21]n21??Formula 2 M(L1)n71(L2)n72.??Formula 7 The organic light-emitting device may have high efficiency and long lifespan and may show little change in the efficiency at an x-coordinate (CIEx) value of 0.21.
Type:
Grant
Filed:
October 16, 2015
Date of Patent:
November 3, 2020
Assignee:
Samsung Display Co., Ltd.
Inventors:
Naoyuki Ito, Myeong-Suk Kim, Youn-Sun Kim, Sung-Wook Kim, Hwan-Hee Cho, Chang-Woong Chu
Abstract: Metal complexes containing heteroaryl and its analogues as ligands are disclosed in this application. These compounds may be useful as charge transport materials in OLEDs.
Abstract: The present invention relates to a compound for an organic optoelectronic element, represented by chemical formula I, an organic optoelectronic element employing the same, and a display device. The details of chemical formula I above are defined as in the specification.
Type:
Grant
Filed:
November 20, 2015
Date of Patent:
October 6, 2020
Assignee:
Samsung SDI Co., Ltd.
Inventors:
Hyung Sun Kim, Byungku Kim, Youngkwon Kim, Younhwan Kim, Hun Kim, Eun Sun Yu, Sung-Hyun Jung
Abstract: A perovskite compound represented by Formula 1, a thin layer including the perovskite compound, and an optoelectronic device including the perovskite compound: [A][B1nB2(1-n)][X]3.??Formula 1 In Formula 1, A may be at least one selected from a monovalent organic cation, monovalent inorganic cation, and combinations thereof; B1 may be a thulium (II) (Tm2+) ion; B2 may be at least one divalent inorganic cation, where B2 is free of (e.g., does not include) Tm2+; n may be a real number that satisfies 0<n?1; and X may be at least one monovalent anion.
Type:
Grant
Filed:
April 11, 2017
Date of Patent:
September 22, 2020
Assignee:
Samsung Display Co., Ltd.
Inventors:
Dongchan Kim, Yoonhyeung Cho, Wonjong Kim, Eungdo Kim, Dongkyu Seo, Jonghyuk Lee, Jihye Lee, Sanghoon Yim, Wonsuk Han
Abstract: Provided herein are metal halide perovskite nanoplatelets, methods for making metal halide perovskite nanoplatelets, and devices and composite materials that include metal halide nanoperovskite nanoplatelets. The metal halide perovskite nanoplatelets may be stable at ambient temperature and pressure, thereby easing device fabrication.
Type:
Grant
Filed:
September 22, 2016
Date of Patent:
September 15, 2020
Assignee:
Florida State University Research Foundation, Inc.
Abstract: A method of manufacturing a light-emitting display device, the method including forming a first electrode on a substrate, the substrate including a plurality of pixel regions divided by a non-pixel region, in each of the pixel regions; forming a pixel defining layer, the pixel defining layer having a plurality of pixel openings, each of the pixel openings exposing the first electrode, on the substrate; forming a hole injection layer on the first electrode; forming a lyophilic layer on the hole injection layer to completely overlap the hole injection layer; forming a hole transport layer on the lyophilic layer; forming a light-emitting layer on the hole transport layer; and forming a second electrode on the light-emitting layer.
Type:
Grant
Filed:
May 1, 2019
Date of Patent:
August 25, 2020
Assignee:
SAMSUNG DISPLAY CO., LTD.
Inventors:
Hyang Shik Kong, Yoon Ho Kang, Dong Hoon Kwak, Sung Woong Kim, Yool Guk Kim, Jae Hoon Kim, Ye Seul Na, Seok Soon Back, Jae Kwon Hwang
Abstract: A delayed fluorescence material is disclosed. The delayed fluorescence material has a molecular structure that includes an electron donor unit that donates electrons; and an electron acceptor unit that is coupled to the electron donor unit and accepts electrons, wherein the electron acceptor unit includes an indolocarbazole group having at least one acceptor functional-group bound to the indolocarbazole group. Thus, the delayed fluorescence material exhibits high structural and thermal stability as well as high quantum efficiency.
Type:
Grant
Filed:
October 20, 2017
Date of Patent:
July 14, 2020
Assignee:
Research & Business Foundation Sungkyunkwan University
Abstract: A polycyclic compound and an organic electroluminescence device including the same. The polycyclic compound according to an example embodiment is represented by the following Formula 1. wherein in Formula 1, Cy1 is carbonyl-containing five- or six-membered and substituted or unsubstituted cyclic hydrocarbon or substituted or unsubstituted heterocycle, and R1 to R4 are each independently a hydrogen atom or a group represented by the following Formula 2 or 3.
Type:
Grant
Filed:
March 30, 2017
Date of Patent:
July 14, 2020
Assignees:
Samsung Display Co., Ltd., Kyushu University, National University Corporation
Abstract: The organic electroluminescence device includes an anode, a cathode, and at least an emitting layer between the anode and the cathode. The emitting layer includes a first host material, a second host material, and a phosphorescent dopant material. The first host material is a compound represented by a formula (1) below and the second host material is a compound represented by a formula (2) below.
Abstract: A light-emitting element having high emission efficiency is provided. A light-emitting element having a low driving voltage is provided. A novel compound which can be used for a transport layer or as a host material or a light-emitting material of a light-emitting element is provided. A novel compound with a benzofuropyrimidine skeleton is provided. Also provided is a light-emitting element which includes the compound with the benzofuropyrimidine skeleton between a pair of electrodes.
Type:
Grant
Filed:
January 23, 2019
Date of Patent:
June 30, 2020
Assignee:
Semiconductor Energy Laboratory Co., Ltd.
Inventors:
Hideko Inoue, Miki Kanamoto, Hiromi Seo, Satoshi Seo, Tatsuyoshi Takahashi, Tomoka Nakagawa
Abstract: To provide a light-emitting element with high emission efficiency and low driving voltage. The light-emitting element includes a guest material and a host material. A HOMO level of the guest material is higher than a HOMO level of the host material. An energy difference between the LUMO level and a HOMO level of the guest material is larger than an energy difference between the LUMO level and a HOMO level of the host material. The guest material has a function of converting triplet excitation energy into light emission. An energy difference between the LUMO level of the host material and the HOMO level of the guest material is larger than or equal to energy of light emission of the guest material.
Type:
Grant
Filed:
September 27, 2016
Date of Patent:
June 23, 2020
Assignee:
Semiconductor Energy Laboratory Co., Ltd.
Inventors:
Satoshi Seo, Takeyoshi Watabe, Satomi Mitsumori