Abstract: A triarylamine derivative represented by a general formula (G1) given below is provided. Note that in the formula, Ar represents either a substituted or unsubstituted phenyl group or a substituted or unsubstituted biphenyl group; ? represents a substituted or unsubstituted naphthyl group; ? represents either hydrogen or a substituted or unsubstituted naphthyl group; n and m each independently represent 1 or 2; and R1 to R8 each independently represent any of hydrogen, an alkyl group having 1 to 6 carbon atoms, or a phenyl group.
Type:
Grant
Filed:
May 22, 2023
Date of Patent:
May 7, 2024
Assignee:
Semiconductor Energy Laboratory Co., Ltd.
Abstract: Provided are a light-emitting device including a condensed cyclic compound represented by Formula 1 and an electronic apparatus including the light-emitting device, where Formula 1 is the same as described in the present specification. The light-emitting device includes a first electrode, a second electrode facing the first electrode, an interlayer between the first electrode and the second electrode, and emission layer including at least one of the condensed cyclic compound represented by Formula 1.
Type:
Grant
Filed:
April 29, 2021
Date of Patent:
April 23, 2024
Assignee:
Samsung Display Co., Ltd.
Inventors:
Junha Park, Seokhwan Hwang, Sunyoung Pak, Jangyeol Baek, Munki Sim, Hyoyoung Lee, Minjung Jung
Abstract: A light-emitting element having a long lifetime is provided. A light-emitting element exhibiting high emission efficiency in a high luminance region is provided. A light-emitting element includes a light-emitting layer between a pair of electrodes. The light-emitting layer contains a first organic compound, a second organic compound, and a phosphorescent compound. The first organic compound is represented by a general formula (GO). The molecular weight of the first organic compound is greater than or equal to 500 and less than or equal to 2000. The second organic compound is a compound having an electron-transport property. In the general formula (GO), Ar1 and Ar2 each independently represent a fluorenyl group, a spirofluorenyl group, or a biphenyl group, and Ar3 represents a substituent including a carbazole skeleton.
Type:
Grant
Filed:
June 11, 2021
Date of Patent:
April 23, 2024
Assignee:
Semiconductor Energy Laboratory Co., Ltd.
Inventors:
Takao Hamada, Hiromi Seo, Kanta Abe, Kyoko Takeda, Satoshi Seo
Abstract: Described are luminescent components with excellent performance and stability. The luminescent components comprise a first element 1 including first luminescent crystals 11 from the class of perovskite crystals, embedded a first polymer P1 and a second element 2 comprising a second solid polymer composition, said second polymer composition optionally comprising second luminescent crystals 12 embedded in a second polymer P2. Polymers P1 and P2 differ and are further specified in the claims. Also described are methods for manufacturing such components and devices comprising such components.
Type:
Grant
Filed:
April 14, 2021
Date of Patent:
April 16, 2024
Assignee:
Avantama AG
Inventors:
Norman Albert Lüchinger, Lin Fangjian, Tom Mitchell-Williams, Stefan Loher
Abstract: An asymmetric tetradentate metal complex of a N{circumflex over (?)}C{circumflex over (?)}C{circumflex over (?)}N comprising tetradentate ligand has a metal connected to binding sites which are connected to each other via three or four covalent bonds that can be either single or double bonds with bridging linkers reside between C{circumflex over (?)}C and C{circumflex over (?)}N moieties. These linkers result in three-dimension metal complexes with distorted square planar geometries. The four donor atoms coordinate to a metal center. Upon metal binding a 5-6-6 membered metallocycle is formed upon chelation including a first nitrogen donor bond, a first metal-carbon bond, a second metal-carbon bond, and a second nitrogen donor bond. The light emission from these metal complexes can be tuned by the ligand structure over the entire visible spectrum.
Type:
Grant
Filed:
January 18, 2019
Date of Patent:
April 16, 2024
Assignee:
The University of Hong Kong
Inventors:
Chi Ming Che, Wai Hung Ang, Mao Mao, Gang Cheng
Abstract: The present invention includes novel compounds containing deuterated or partially deuterated xanthene and thioxanthene structures. These compounds may be useful as host materials with high triplet energies for phosphorescent electroluminescent devices.
Abstract: Disclosed is an organic electroluminescence device. The organic electroluminescence device has an organic layer having a specific combination in which a hole transporting material is doped with a p-type conductive doped material. The organic electroluminescence device can provide better device performance, such as lifetime improvement and voltage reduction.
Abstract: The present disclosure relates to a plurality of host materials comprising a first host material comprising a compound represented by formula 1, and a second host material comprising a compound represented by formula 2, and an organic electroluminescent device comprising the same. By comprising a specific combination of compounds as host materials, it is possible to provide an organic electroluminescent device having lower driving voltage, higher luminous efficiency, higher power efficiency, and/or superior lifespan characteristics compared to conventional organic electroluminescent devices.
Type:
Grant
Filed:
October 20, 2020
Date of Patent:
April 2, 2024
Assignee:
Rohm and Haas Electronic Materials Korea Ltd.
Abstract: A novel light-emitting device with a microcavity structure which can improve the emission efficiency compared to the conventional one is provided. In a light-emitting device with a microcavity structure that emits light in a near-infrared range, reflectance of one or both of a first electrode (reflective electrode) and a second electrode (semi-transmissive and semi-reflective electrode) with respect to light in a near-infrared range (e.g., light with a wavelength of 850 nm) is higher than the reflectance thereof with respect to light in a visible light range (greater than or equal to 400 nm and less than 750 nm).
Type:
Grant
Filed:
November 27, 2019
Date of Patent:
April 2, 2024
Assignee:
Semiconductor Energy Laboratory Co., Ltd.
Inventors:
Takeyoshi Watabe, Airi Ueda, Nobuharu Ohsawa, Satoshi Seo
Abstract: The present disclosure provides an organic light emitting diode including a first electrode; a second electrode facing the first electrode; and an emitting material layer including a first compound and a second compound positioned between the first and second electrodes, wherein the first compound includes a hexagonal-ring moiety including one boron atom, one oxygen atom and four carbon atoms, and the second compound includes a hexagonal-ring moiety including one boron atom, one nitrogen atom and four carbon atoms, and an organic light emitting device including the organic light emitting diode.
Type:
Grant
Filed:
November 20, 2020
Date of Patent:
March 26, 2024
Assignee:
LG DISPLAY CO., LTD.
Inventors:
Ik-Rang Choe, Hye-Gun Ryu, Jun-Yun Kim, Seong-Keun Kim, Ju-Young Lee
Abstract: A luminescent material, including a first compound represented by Formula 1 and a second compound represented by Formula 2: [A][Cu][X]3??Formula 1 R21R22R23N??Formula 2 wherein, in Formulae 1 and 2, A, X, and R21 to R23 are understood by referring to the definitions thereof provided in the detailed description of the specification.
Abstract: Provided are: a highly durable polymer having a high hole-injection/transport capacity; and a composition for an organic electroluminescent element, which contains the polymer.
Abstract: An organic electroluminescent device includes a pair of electrodes; and an organic layer between the pair of electrodes, which includes a light-emitting layer, wherein the organic layer contains a compound represented by the following formula (I); and the light-emitting layer contains a iridium complex phosphorescent material: wherein R1, R2, R3, R4, R5, R6, R7 and R8 each represents a hydrogen atom or a substituent, and contiguous substituents of R1 to R8 may be bonded to each other to form a condensed ring; R9 represents an alkyl group, an alkenyl group, an aryl group, a hetero-aryl group, or a silyl group, and each of which group may be substituted with a substituent; and at least one of R1 to R9 represents a deuterium atom or a substituent containing a deuterium atom.
Abstract: A novel compound is provided. Alight-emitting device having high emission efficiency and a long lifetime is also provided. An organic compound is represented by General Formula (G2), in which a benzo[a]anthracene skeleton is bonded to the 2-position of an anthracene skeleton. In General Formula (G2), R1 to R3, R5 to R12, and R21 to R29 each independently represent any one of hydrogen, an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms, and a substituted or unsubstituted aryl group having 6 to 13 carbon atoms in a ring. Another embodiment of the present invention is a light-emitting device including the compound.
Type:
Grant
Filed:
May 22, 2019
Date of Patent:
March 19, 2024
Assignee:
Semiconductor Energy Laboratory Co., Ltd.
Abstract: Provided are organometallic compounds. Also provided are formulations comprising these organometallic compounds. Further provided are OLEDs and related consumer products that utilize these organometallic compounds.
Type:
Grant
Filed:
January 4, 2021
Date of Patent:
March 19, 2024
Assignee:
Universal Display Corporation
Inventors:
Wei-Chun Shih, Tyler Fleetham, Zhiqiang Ji, Pierre-Luc T. Boudreault, Tongxiang Lu, Rasha Hamze
Abstract: An organic light-emitting device includes: a first electrode; a second electrode facing the first electrode; an organic layer disposed between the first electrode and the second electrode and including an emission layer; and at least one of heterocyclic compounds represented by Formulae 1-1 to 1-3, as defined herein.
Abstract: Disclosed are a compound represented by Chemical Formula 1, a composition comprising the same, an organic optoelectronic diode, and a display device. Chemical formula 1 is as defined in the specification.
Abstract: An organic light emitting device including an anode; a hole transport region on the anode; an emission layer on the hole transport region; an electron transport region on the emission layer; and a cathode on the electron transport region, wherein the hole transport region includes: a first hole transport layer including a first hole transport material represented by the following Formula 1 or a second hole transport material represented by the following Formula 2; and a second hole transport layer on the first hole transport layer, the second hole transport layer including a third hole transport material represented by the following Formula 3 or a fourth hole transport material represented by the following Formula 4:
Abstract: Novel ligands for metal complexes containing five-membered ring fused on pyrimidine ring combined with partially fluorinated side chains exhibiting improved external quantum efficiency and lifetime are disclosed.