Abstract: A light-emitting device in which an interlayer includes a contact layer including an electron-transporting host and a hole-transporting host is provided. The contact layer is in direct contact with an emission layer, and the emission layer includes a first dopant and a second dopant.
Abstract: Specific compounds represented by formula (I), a material for an organic electroluminescence device comprising said specific compound, an organic electroluminescence device comprising said specific compound, an electronic equipment comprising said organic electroluminescence device and the use of said compounds in an organic electroluminescence device.
Abstract: The present disclosure includes a thin film assembly comprising a substrate and an epitaxial crystalline thin film disposed on the substrate, wherein the epitaxial crystalline thin film is a single crystal, wherein at least a portion of the epitaxial crystalline thin film is doped with rare-earth ions at a concentration of less than 100 parts per billion. The disclosure further includes a method of manufacturing a thin film assembly, the method comprising creating, on a substrate and with use of molecular beam epitaxy, an epitaxial crystalline thin film doped with the rare-earth ions at a concentration of less than 100 parts per billion.
Abstract: A compound including a first ligand LA of Formula I, is disclosed. In Formula I, ring B is a 5- or 6-membered ring; X1, X2, and X3 are each CRA or N; R is a 5- or 6-membered carbocyclic or heterocyclic ring, which can be further fused or substituted; and (1) when ring B is an unfused 6-membered ring, X1 and X2 are N, and X3 is C; and (2) when ring B is a fused 6-membered ring, ring B has the structure of Formula II, In this structure, the wavy line indicates the point of connection to ring A; Q1 to Q6 are each C or N; and, when proviso (2) applies, (I) at least one of X1, X2, and X3 is N; or (II) R is two or more fused or unfused 5- or 6-membered carbocyclic or heterocyclic rings, or (III) at least ring A or R is substituted with a partially or fully deuterated alkyl or partially or fully deuterated cycloalkyl group.
Type:
Grant
Filed:
December 8, 2021
Date of Patent:
June 23, 2026
Assignee:
UNIVERSAL DISPLAY CORPORATION
Inventors:
Derek Ian Wozniak, Zhiqiang Ji, James Fiordeliso, Wei-Chun Shih, Pierre-Luc T. Boudreault, Walter Yeager, Bert Alleyne, Henry Carl Herbol, Eric A. Margulies, Rasha Hamze
Abstract: Provided is an electroluminescent device. The organic electroluminescent device comprises an anode, a cathode and an organic layer disposed between the anode and the cathode, where the organic layer comprises a first compound having a structure of H-L1-E and a second compound having a general formula of M(La)m(Lb)n(Lc)q, and the device has at least one maximum emission wavelength greater than 630 nm. Such a new material composition consisting of the first compound and the second compound can be used in a light-emitting layer of the electroluminescent device. The new material composition can achieve the emission of deep red light in the device, significantly reduce a drive voltage of the device while significantly improving device efficiency and/or a device lifetime, and provide better device performance. Further provided is a display assembly.
Abstract: A novel light-emitting device that is highly convenient, useful, or reliable is provided. The light-emitting device includes a first electrode, a second electrode, and a first unit. The first unit is located between the first electrode and the second electrode, and the first unit has a function of emitting light. The first unit contains a light-emitting organic compound and an organic compound HRM. The organic compound HRM has four or more rotatable bonds and a principal moment of inertia. The principal moment of inertia includes a first normalized principal moment of inertia NPR1 and a second normalized principal moment of inertia NPR2 in a predetermined region.
Type:
Grant
Filed:
June 16, 2022
Date of Patent:
June 2, 2026
Assignee:
Semiconductor Energy Laboratory Co., Ltd.
Abstract: A light-emitting device including an organometallic compound represented by Formula 1, an electronic apparatus including the light-emitting device, and the organometallic compound represented by Formula 1 are provided: wherein in Formula 1, M is platinum (Pt), palladium (Pd), nickel (Ni), copper (Cu), silver (Ag), gold (Au), rhodium (Rh), iridium (Ir), ruthenium (Ru), or osmium (Os).
Abstract: A method for producing a polytetrafluoroethylene composition including mixing a polytetrafluoroethylene resin and a filler using an airflow mixer to provide a polytetrafluoroethylene composition containing the polytetrafluoroethylene resin and the filler. The airflow mixer is a pulse-type airflow mixer or an airflow stirrer. Also disclosed is a polytetrafluoroethylene composition produced by the production method, a polytetrafluoroethylene composition having specific physical properties, as well as a molded article, electrically conductive tube, thermally conductive film, and substrate for CCL each obtained from the polytetrafluoroethylene composition.
Abstract: An organic electroluminescence device containing a cathode, an anode, and an emitting layer disposed between the cathode and the anode, wherein the emitting layer contains a compound represented by the following formula (1) and one or more compounds selected from the group consisting of a compound represented by the specific formulas (11), (21), (31), (41), (51), (61), (71), and (81).
Abstract: A resin composition is produced by a method including a washing step of washing a resin composition with water. The resin composition contains fine polymer particles (A) and a resin (B). The fine polymer particles (A) have a graft part that is constituted by a polymer containing, as one or more structural units, one or more structural units derived from at least one type of monomer selected from the group consisting of aromatic vinyl monomers, vinyl cyanide monomers, and (meth)acrylate monomers. The resin (B) has a given viscosity, in a case where a total amount of the fine polymer particles (A) and the resin (B) is regarded as 100% by weight, an amount of the fine polymer particles (A) being 1% by weight to 70% by weight and an amount of the resin (B) being 30% by weight to 99% by weight.
Abstract: An object of the present invention is to provide a PVA-based resin having a degree of saponification obtained in the middle stage of the reaction, that is, an average degree of saponification of 68 mol % to 85 mol %, a narrow degree of saponification distribution, and excellent dispersion stability. The present invention relates to a polyvinyl alcohol-based resin having an average degree of saponification of 68 mol % to 85 mol %, and a ¼ value width of 7.0 minutes or less in a degree of saponification distribution obtained by high performance liquid chromatogram measured under specific conditions.
Abstract: Provided are an organometallic compound represented by Formula 1, an organic light-emitting device including the organometallic compound, and a diagnostic composition including the organometallic compound: M1(L11)n11(L12)n12??Formula 1 wherein L11 in Formula 1 is a ligand represented by Formula 1-1: wherein, in Formula 1-1, Ar1 is a phenyl group substituted with at least one of E1 and Ar2 is a phenyl group substituted with at least one E2, and the other substituents are described in the detailed description of the present specification.
Type:
Grant
Filed:
September 16, 2021
Date of Patent:
April 21, 2026
Assignee:
SAMSUNG DISPLAY CO., LTD.
Inventors:
Hyejin Bae, Joonghyuk Kim, Minsik Min, Sangho Park, Satoko Ishibe, Sooghang Ihn, Soonok Jeon, Jun Chwae, Hyesung Choi
Abstract: A light-emitting device including an organic layer disposed between a first electrode and a second electrode, the organic layer comprising a fluorescent compound, wherein upon excitation, excitons in a 3n-?* excited state of the fluorescent compound migrate to a 1?-?* excited state of the fluorescent compound by reverse intersystem crossing with a Rate (rISC), and then undergo radiative transition to a ground state to emit light via fluorescence. The fluorescent compound is defined by a ratio of Rate (rISC) to Rate (IC) is 0.5 or greater. An electronic apparatus including the light-emitting device, and the fluorescent compound.
Abstract: Provided are organometallic compounds including a ligand LA of a structure of Formula I Also provided are formulations including these organometallic compounds. Further provided are OLEDs and related consumer products that utilize these organometallic compounds.
Type:
Grant
Filed:
January 26, 2022
Date of Patent:
March 24, 2026
Assignee:
UNIVERSAL DISPLAY CORPORATION
Inventors:
Hsiao-Fan Chen, Rasha Hamze, Neil Palmer, Morgan C. MacInnis, George Fitzgerald, Elena Sheina, Scott Beers, Jason Brooks, Alexey Borisovich Dyatkin, Suman Layek, Jui-Yi Tsai
Abstract: An organic compound is represented by formula [1]. In formula [1], L and L? are bidentate ligands different from each other, a partial structure IrLm is a partial structure represented by formula [2], and a partial structure IrL?n is a partial structure represented by formula [3-1] or formula [3-2].
Abstract: The present invention relates to a polycyclic aromatic derivative compound and an organic light-emitting device having high efficiency and long lifespan, the device applying the compound in various organic layers so as to remarkably improve luminous efficiency. According to the invention, an organic light-emitting device having high efficiency and long lifespan and having remarkably improved luminous efficiency can be implemented, and thus can be industrially useful in various display devices and lighting devices.
Type:
Grant
Filed:
January 21, 2021
Date of Patent:
March 3, 2026
Assignee:
SFC CO., LTD
Inventors:
Sung-hoon Joo, Bong-ki Shin, Byung-sun Yang, Ji-hwan Kim, Hyeon-jun Jo, Sung-eun Choi
Abstract: Provided is a heterocyclic compound of Chemical Formula 1: a is a substituted or unsubstituted tetracyclic or higher aromatic or heteroaromatic ring, and b is a benzene or naphthalene ring; at least two of G1 to G3 are a group of Chemical Formula A, and any remaining group, and G101, is hydrogen, deuterium, halogen, cyano, nitro, or a substituted or unsubstituted: silyl, boron, alkyl, alkoxy, cycloalkyl, aryl, or heteroaryl group; L1 and L2 are a direct bond, or a substituted or unsubstituted arylene or heteroarylene group; Ar1 and Ar2 are hydrogen, deuterium, halogen, cyano, nitro, or a substituted or unsubstituted: silyl, boron, alkyl, alkoxy, cycloalkyl, aryl, or a heteroaryl group, or a fused ring group of an aromatic hydrocarbon ring and aliphatic hydrocarbon ring, or bond to each other to form a substituted or unsubstituted heteroring; and an organic light emitting device including the same.
Type:
Grant
Filed:
November 13, 2020
Date of Patent:
February 24, 2026
Assignee:
LG CHEM, LTD.
Inventors:
Kyunghee Kim, Wanpyo Hong, Sujeong Geum, Moung Gon Kim, Seonwoo Kim
Abstract: Provided are an organometallic compound, a light-emitting device including the organometallic compound, and an electronic apparatus including the light-emitting device. The light-emitting device includes a first electrode, a second electrode facing the first electrode, and an interlayer disposed between the first electrode and the second electrode. The interlayer includes an emission layer. The emission layer includes a first compound which is the organometallic compound; and a second compound, a third compound, a fourth compound, or any combination thereof. The first compound, the second compound, the third compound, and the fourth compound are different from one another.
Type:
Grant
Filed:
September 17, 2021
Date of Patent:
February 24, 2026
Assignee:
Samsung Display Co., Ltd.
Inventors:
Sujin Shin, Soobyung Ko, Haejin Kim, Eunsoo Ahn, Jaesung Lee, Mina Jeon
Abstract: Thermoplastic articles are molded from thermoplastic polyurethane compounds including blends of aromatic polycaprolactone thermoplastic polyurethane and other aromatic thermoplastic polyurethane selected from aromatic polyester thermoplastic polyurethane, aromatic polyether thermoplastic, and combinations thereof. The thermoplastic articles exhibit enhanced stain resistance, as represented by achieving a rating of 2 or better according to Blue Jean Abrasion Test, relative to thermoplastic articles molded from thermoplastic polyurethane compounds including either aromatic polyester thermoplastic polyurethane or aromatic polyether thermoplastic only, while also having good clarity (i.e., low haze) and other desirable properties. The thermoplastic articles can be especially useful as protective cases for handheld electronic devices.
Abstract: The present specification relates to a heterocyclic compound represented by Chemical Formula 1, and an organic light emitting device including the same.
Type:
Grant
Filed:
November 27, 2020
Date of Patent:
February 17, 2026
Assignee:
LT MATERIALS CO., LTD.
Inventors:
Gi-Back Lee, Nam-Jin Lee, Won-Jang Jeong, Dong-Jun Kim