Fluroescent, Phosphorescent, Or Luminescent Layer Patents (Class 428/690)
  • Patent number: 10026915
    Abstract: A white organic light emitting device can include first and second electrodes on a substrate; a first stack configured with a hole injection layer, a first hole transportation layer, a first light emission layer and a first electron transportation layer which are stacked on the first electrode; a second stack configured with a second hole transportation layer, a second light emission layer, a third light emission layer, and a second electron transportation layer which are stacked on the first stack; a third stack interposed between the second stack and the second electrode and configured with a third hole transportation layer, a fourth light emission layer, a third electron transportation layer and an electron injection layer which are stacked on the second stack; and charge generation layers interposed between the first and second stacks and between the second and third stacks and configured to adjust a charge balance between the stacks.
    Type: Grant
    Filed: November 23, 2015
    Date of Patent: July 17, 2018
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Tae Sun Yoo, Hwa Kyung Kim, Hong Seok Choi, Jae Il Song, Mi Young Han, Shin Han Kim, Hye Min Oh
  • Patent number: 10026905
    Abstract: A compound represented by Formula 1. An organic electric element includes a first electrode, a second electrode, and an organic material layer including the compound of Formula 1. The organic material layer include a light emitting layer, a hole transport layer including a compound represented by Formula 2, and an emission-auxiliary layer including the compound represented by Formula 1. When the organic electric element includes the compound in the organic material layer, luminous efficiency, color purity, and life span can be improved.
    Type: Grant
    Filed: January 14, 2013
    Date of Patent: July 17, 2018
    Assignee: DUK SAN NEOLUX CO., LTD.
    Inventors: Dongha Kim, Sunhee Lee, Yeonhee Choi, Soungyun Mun, Jungcheol Park, Yongwook Park, Heesun Ji, Junghwan Park, Bumsung Lee, Sunpil Hwang
  • Patent number: 10026918
    Abstract: A white light-emitting organic EL panel is high in color rendering properties and is excellent in hue stability. The panel includes a light-emitting functional layer that has a blue light anode side unit, a connection layer, and a red-green light cathode side unit. The connection layer injects electrons into the blue light anode side and injects holes into the red-green light cathode side when current is applied. The red-green light cathode side unit includes a red-green phosphorescent light-emitting layer composed of a red phosphorescent material, a green phosphorescent material, and a host material for the phosphorescent light-emitting layer. The maximum emission peak wavelength of the red and green phosphorescent materials are 60 nm or more apart, and the panel is capable of emitting white light with a general color rendering index and a special color rendering index greater than or equal to 90.
    Type: Grant
    Filed: May 24, 2016
    Date of Patent: July 17, 2018
    Assignee: Kaneka Corporation
    Inventors: Naomi Nagai, Hirotaka Umezaki
  • Patent number: 10024519
    Abstract: A conversion element for the wavelength conversion of electromagnetic radiation from a first wavelength range to electromagnetic radiation from a second wavelength range, which includes longer wavelengths than the first wavelength range, the conversion element includes: a matrix material, the optical refractive index of which is temperature-dependent, and at least two different types of luminophore particles wherein a multiplicity of luminophore particles of each of the types are distributed in the matrix material, luminophore particles of different types differ from one another in terms of average particle size and/or material, the conversion element, upon excitation by electromagnetic radiation from the first wavelength range emits mixed radiation including electromagnetic radiation from the first and the second wavelength range, and the correlated color temperature and/or the color locus of the mixed radiation remain(s) substantially the same when the matrix material is at a temperature of between 25° C.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: July 17, 2018
    Assignee: OSRAM GmbH
    Inventor: Reiner Windisch
  • Patent number: 10014478
    Abstract: The present invention discloses an indenotriphenylene-based diamine derivative is represented by the following formula (1), the organic EL device employing the derivative as hole transport layer, electron blocking layer and fluorescent emitting dopant of emitting layer can display good performance like as lower driving voltage and power consumption, increasing efficiency and half-life time. wherein Ar1, Ar2, L, X, m, n, p, q, r and R1 to R5 are the same definition as described in the present invention.
    Type: Grant
    Filed: May 19, 2015
    Date of Patent: July 3, 2018
    Inventor: Feng-Wen Yen
  • Patent number: 10011768
    Abstract: A phosphor comprising a crystalline phase having a composition expressed by Formula [1] below, a crystal system of the phosphor being a hexagonal crystal system, MmAaAlbSicN40??[1] (in Formula [1] M denotes an activating element, A denotes one or more types of elements selected from the group consisting of alkaline earth metal elements, and m, a, b and c denote values that satisfy expressions below independent from each other 0<m?0.2 1.2?a?5.6 2.4?b?11.2 18.8?c?27.6).
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: July 3, 2018
    Assignees: MITSUBISHI CHEMICAL CORPORATION, TOHOKU UNIVERSITY
    Inventors: Fumitaka Yoshimura, Hisanori Yamane
  • Patent number: 10014481
    Abstract: When a decrease in low-grey level region (e.g., 0 to 80 grey) efficiencies of organic light emitting devices is not constant, deviation among display panels may cause color change and stain in the low luminance region. Aspects of the present disclosure are directed toward a compound to overcome this problem and an organic light-emitting device including the same. The compound may be represented by Formula 1: Organic light-emitting devices including this compound in the buffer layer were found to have improved efficiencies at low grey levels.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: July 3, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Youngtak Lee, Jahyun Im
  • Patent number: 10008672
    Abstract: The invention relates to arylamino compounds and to the use thereof in electronic devices, for example organic electroluminescent devices. The invention furthermore relates to electronic devices comprising one or more of the said compounds, for example as hole-transport materials in a corresponding functional layer of the device. The invention furthermore relates to a process for the preparation of the said compounds, and to a formulation comprising one or more of the said compounds.
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: June 26, 2018
    Assignee: Merck Patent Gmbh
    Inventors: Philipp Stoessel, Frank Voges, Arne Buesing, Christof Pflumm, Teresa Mujica-Fernaud, Christian Wirges
  • Patent number: 10005956
    Abstract: The present invention generally relates to compositions, articles, and methods for down-converting light and other applications. In some embodiments, the articles comprise a substrate and a composition comprising one or more types of polymers and one or more additives. In certain embodiments, the one or more additives comprise a light-emitting dye and/or a diluent matrix.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: June 26, 2018
    Assignee: Massachusetts Institute of Technology
    Inventors: Timothy M. Swager, Gregory D. Gutierrez
  • Patent number: 10008643
    Abstract: A light emitting device comprises a light emitting element having an emission peak wavelength in a wavelength range of 430 nm to 470 nm, and a phosphor material comprising at least one type of phosphor selected from the group consisting of a first phosphor and a second phosphor, a third phosphor, a fourth phosphor, and a fifth phosphor having respective compositions represented by formulas (I)-(V): (x?s)MgO.(s/2)Sc2O3.yMgF2.uCaF2.(1?t)GeO2.(t/2)Mt2O3:zMn4+??(I) A2[M1?pF6]:pMn4+??(II) Lu3Al5O12:Ce??(III) (Sr,Ca)AlSiN3:Eu??(IV) (Ca,Sr,Ba)8MgSi4O16(F,Cl,Br)2:Eu??(V) In the formulas (I)-(V), Mt is at least one of Al, Ga, and In; x, y, z, s, t, and u each satisfy 2?x?4, 0<y<1.5, 0<z<0.05, 0?s?0.5, 0<t<0.5, and 0?u<1.5; A is at least one of K, Li, Na, Rb, Cs, and NH4; M is at least one type of element from group 4 elements and group 14 elements; and p satisfies 0<p<0.2.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: June 26, 2018
    Assignee: NICHIA CORPORATION
    Inventor: Kenji Asai
  • Patent number: 10008680
    Abstract: An iridium complex and a nitrogen-containing tridentate ligand are provided. The iridium complex is represented by below formula: wherein R1 and R1? are each independently substituted or unsubstituted C1-C12 alkyl, substituted or unsubstituted C6-C12 aryl, or —CmF2m+1, m is an integer of 0 to 3; R2 and R2? are each independently hydrogen, substituted or unsubstituted C1-C12 alkyl, or substituted or unsubstituted C6-C12 aryl; p and p? are each independently 0 or 1; R3, R3?, R4 and R4? are each independently hydrogen, fluorine, substituted or unsubstituted C1-C12 alkyl, substituted or unsubstituted C1-C6 alkoxyl, or substituted or unsubstituted C6-C12 aryl; q and q? are each independently an integer of 0 to 3; r and r? are each independently an integer of 0 to 4; X1 to X7 are each independently carbon or nitrogen; A is —O—, —CH2—, or —CR2—, R is methyl, ethyl, or propyl; and a is 0 or 1.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: June 26, 2018
    Assignee: National Tsing Hua University
    Inventors: Yun Chi, Jun Lin, Pi-Yu Chen
  • Patent number: 10003032
    Abstract: An organic electroluminescent material is shown in formula (1), Wherein R9 or/and R13 is/are benzimidazole derivative(s), benzimidazole derivative is shown in formula (3) Wherein the rest of functional groups are independently selected from one of hydrogen atom, fluorine atom, cyano group, alkyl group, cycloalkyl group, alkoxy group, thioalkyl group, silyl group and alkenyl group.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: June 19, 2018
    Assignee: YUAN ZE UNIVERSITY
    Inventors: Jau-Jiun Huang, Man-Kit Leung, Tien-Lung Chiu, Jiun-Haw Lee, Yu-Hsiang Hung, Lik-Ka Yun
  • Patent number: 10003043
    Abstract: The invention provides an OLED display panel and the production process thereof, which relates to the technical field of display, may improve the surface flatness and the water-oxygen permeation resistance of the flexible base substrate, improve the light output ratio of the display panel, and may control the center wavelength of the electroluminescence spectrum.
    Type: Grant
    Filed: April 24, 2014
    Date of Patent: June 19, 2018
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Yuanhui Guo, Hui Wang, Chun Wang, Yisan Zhang
  • Patent number: 10003031
    Abstract: Provided herein are a compound capable of improving light emitting efficiency, stability, and lifespan of the element, an organic element using the same, and an electric device for the same.
    Type: Grant
    Filed: November 29, 2013
    Date of Patent: June 19, 2018
    Assignee: DUK SAN NEOLUX CO., LTD.
    Inventors: Jaewan Jang, Sunhee Lee, Wonsam Kim, Hyeryeong Kim, Junghwan Park, Gyumin Lee
  • Patent number: 9997720
    Abstract: An organic light emitting display element according to an example embodiment includes: a first electrode, an emission layer positioned on the first electrode, and a second electrode positioned on the emission layer, in which the emission layer includes at least one of the compounds represented by the following Chemical Formulas 1 to 3.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: June 12, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Myeong Suk Kim, Dae Yup Shin, Sung Wook Kim, Hwan Hee Cho
  • Patent number: 9997726
    Abstract: An organic light emitting device that includes an anode, a cathode, and an emissive layer that includes an organic compound selected from and at least one emissive dopant. The emissive dopant can be one of a variety of organometallic iridium complexes.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: June 12, 2018
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Chun Lin, Alexey Dyatkin, Zeinab Elshenawy, Walter Yeager
  • Patent number: 9997716
    Abstract: Novel organic compounds containing triphenylene and triazine moieties are described. These compounds are expected to improve device performance when they are used in organic electroluminescent devices.
    Type: Grant
    Filed: May 18, 2015
    Date of Patent: June 12, 2018
    Assignee: Universal Display Corporation
    Inventors: Lichang Zeng, Gregg Kottas, Alexey Borisovich Dyatkin, Zeinab Elshenawy, Scott Joseph, Chuanjun Xia, Vadim Adamovich
  • Patent number: 9997739
    Abstract: Disclosed white organic light emitting device includes an anode and a cathode opposing each other; a charge generation layer interposed between the anode and the cathode; a first stack interposed between the anode and the charge generation layer, the first stack including a first hole transport layer and a first light emitting layer emitting blue fluorescent light; and a second stack interposed between the charge generation layer and the cathode, the second stack including a second hole transport layer and a second light emitting layer formed by doping one host with at least one of phosphorescent dopant, wherein a triplet energy level of the first hole transport layer is higher than a triplet energy level of the first light emitting layer, and a hole mobility of the first hole transport layer is 5.0×10?4 cm2/s·V to 9.9×10?3 cm2/s·V.
    Type: Grant
    Filed: September 20, 2012
    Date of Patent: June 12, 2018
    Assignee: LG Display Co., Ltd.
    Inventors: Ki-Woog Song, Sung-Hoon Pieh, Sung-Jae Ko
  • Patent number: 9991445
    Abstract: A heterocyclic compound wherein three five-membered rings are fused to one benzene ring and a saturated or unsaturated ring is fused to each five-membered ring. An organic electroluminescence device includes one or more organic thin film layers between an anode and a cathode. The one or more organic thin film layers include a light emitting layer. At least one layer of the one or more organic thin film layers includes the heterocyclic compound.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: June 5, 2018
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Tasuku Haketa, Masahiro Kawamura, Kazuki Nishimura, Yumiko Mizuki, Hirokatsu Ito, Tomoharu Hayama
  • Patent number: 9985242
    Abstract: Provided are an organic light-emitting display apparatus and a method of manufacturing the same. The organic light-emitting display apparatus includes a first substrate; an organic light-emitting device provided on the first substrate and including a first electrode, a second electrode, and an intermediate layer positioned between the first electrode and the second electrode; a second substrate covering the organic light-emitting device and disposed to face the first substrate; and a sealant bonding the first substrate and the second substrate, wherein at least a portion of the sealant is a intermixing region which is formed as an inorganic material permeates an organic material.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: May 29, 2018
    Assignees: Samsung Display Co., Ltd., Industry-University Cooperation Foundation Hanyang-University
    Inventors: Seunghun Kim, Myungmo Sung, Seungyong Song, Cheol Jang
  • Patent number: 9978959
    Abstract: An organometallic compound, an organic light-emitting device including the same, and a method of manufacturing organic light-emitting device, the organometallic compound being represented by Formula 1, below:
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: May 22, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Myoung-Ki Kim
  • Patent number: 9978947
    Abstract: An organic light emitting display device is disclosed. The organic light emitting device includes a first light emitting part between an anode and a cathode, the first light emitting layer having a hole injection layer, a first hole transport layer, and a first light emitting layer; a second light emitting part over the first light emitting part, the second light emitting part having a second hole transport layer and a second light emitting layer; and a first charge generation layer between the first light emitting part and the second light emitting part, the first charge generation layer having a P-type charge generation layer, wherein at least one among the hole injection layer, the first hole transport layer, the second hole transport layer, and the P-type charge generation layer includes a carbonitrile compound.
    Type: Grant
    Filed: October 19, 2015
    Date of Patent: May 22, 2018
    Assignee: LG Display Co., Ltd.
    Inventors: JungKeun Kim, ChangWook Han, DoHan Kim, YoonHeung Tak, Jeongdae Seo, Hyoseok Kim, Hyeseung Kang, Jun Yeob Lee
  • Patent number: 9972804
    Abstract: An organic EL element includes a pixel electrode, a light emitting function layer that is formed on the pixel electrode, an electron injection layer formed on the light emitting function layer, and a counter electrode that is formed on the electron injection layer and that has semi-transmissive reflectivity, in which the counter electrode contains a reductive material that reduces material of the electron injection layer and Ag with atomic ratio of 75% or more, and an adsorption layer is formed on the counter electrode.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: May 15, 2018
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Koya Shiratori, Yuki Hanamura, Tsutomu Asakawa
  • Patent number: 9966532
    Abstract: A dendrimer compound characterized by comprising a core represented by the following formula (1-1), (1-2), (1-3), or (1-4) and at least one kind of dendritic structure selected among dendritic structures represented by the following formulae (3) and (4).
    Type: Grant
    Filed: April 9, 2014
    Date of Patent: May 8, 2018
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Makoto Kitano, Yoshiaki Tsubata
  • Patent number: 9966539
    Abstract: An organic electroluminescence device contains an anode and a cathode facing each other, and intervening therebetween at least two hole transporting layers and a light emitting layer sequentially, and one of the hole transporting layers contains a compound having a particular structure having a fluorene structure at the center thereof, and is not adjacent to the light emitting layer. The organic electroluminescence device has a hole transporting layer having an increased thickness, is capable of being controlled in the thickness of the optical film, and has an enhanced device capability.
    Type: Grant
    Filed: February 14, 2013
    Date of Patent: May 8, 2018
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Tomoki Kato, Takayasu Sado, Takahiro Fujiyama
  • Patent number: 9966544
    Abstract: A phosphorescent metal complex is provided, which comprises a metallic central atom M and at least one ligand coordinated by the metallic central atom M, wherein the one metallic central atom M and the ligand form a six-membered metallacyclic ring. Additionally specified are a radiation-emitting component comprising a metal complex, and a process for preparing the metal complex.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: May 8, 2018
    Assignee: OSRAM OLED GmbH
    Inventors: Jürgen Adler, Andreas Kanitz, Günter Schmid, Oksana Freydenzon, Anna Maltenberger
  • Patent number: 9960368
    Abstract: Provided is a novel heterocyclic compound which can be used for a light-emitting element, as a host material of a light-emitting layer in which a light-emitting substance is dispersed. A heterocyclic compound represented by a general formula (G1) is provided. In the formula, A represents any of a substituted or unsubstituted dibenzothiophenyl group, a substituted or unsubstituted dibenzofuranyl group, and a substituted or unsubstituted carbazolyl group, R11 to R19 separately represent any of hydrogen, an alkyl group having 1 to 4 carbon atoms, and a substituted or unsubstituted aryl group having 6 to 13 carbon atoms, and Ar represents a substituted or unsubstituted arylene group having 6 to 13 carbon atoms.
    Type: Grant
    Filed: February 9, 2017
    Date of Patent: May 1, 2018
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hiroshi Kadoma, Yasushi Kitano, Satoko Shitagaki, Nobuharu Ohsawa, Satoshi Seo
  • Patent number: 9960356
    Abstract: Provided are an organic electroluminescence device which has a high luminous efficiency, a low operating voltage and a long life and which is low in a voltage rise in operation and excellent in an ageing stability and has an aptitude in production by the wet process, and a lighting equipment and a display device which are prepared by using the same.
    Type: Grant
    Filed: May 21, 2013
    Date of Patent: May 1, 2018
    Assignee: KONICA MINOLTA, INC.
    Inventors: Mayuka Hikime, Osamu Ishige, Tomohiro Oshiyama, Rie Katakura
  • Patent number: 9960372
    Abstract: Provided are a monoamine derivative represented by the following Formula 1, and an organic electroluminescent device including the same. When the monoamine derivative represented by Formula 1 is used as a hole transport or hole injection material in the device, the operating voltage may be lowered and the emission efficiency may be improved.
    Type: Grant
    Filed: November 23, 2015
    Date of Patent: May 1, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Masatsugu Ueno, Naoya Sakamoto
  • Patent number: 9960358
    Abstract: An organic electroluminescence device having a layer of an organic light emitting medium which comprises (A) a specific arylamine compound and (B) at least one compound selected from specific anthracene derivatives, spirofluorene derivatives, compounds having condensed rings and metal complex compounds and is disposed between a pair of electrodes and an organic light emitting medium comprising the above components (A) and (B) are provided. The organic electroluminescence device exhibits a high purity of color, has excellent heat resistance and a long life and efficiently emits bluish to yellowish light. The organic light emitting medium can be advantageously used for the organic electroluminescence device.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: May 1, 2018
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Masahide Matsuura, Masakazu Funahashi, Kenichi Fukuoka, Chishio Hosokawa
  • Patent number: 9960364
    Abstract: A compound represented by the following formula (1). In the formula (1), when Ar1 and Ar2 are the same substituents, as for all of the following pairs: Y1 and Y12, Y2 and Y11, Y3 and Y10, Y4 and Y9, Y5 and Y8, and Y6 and Y7, Y1 to Y12 of each pair are not the same as each other.
    Type: Grant
    Filed: October 10, 2013
    Date of Patent: May 1, 2018
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Yuki Nakano, Ryohei Hashimoto, Kei Yoshida
  • Patent number: 9954187
    Abstract: Disclosed herein are a compound represented by formula (1) that is capable of producing organic electroluminescence (EL) devices having excellent properties, an organic EL device containing the compound, and an electronic device containing the organic EL device. The organic EL device contains a organic thin film layer between a cathode and an anode, in which the organic thin film layer contains one or more layers and a light emitting layer, and at least one layer of the organic thin film layer contains the compound.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: April 24, 2018
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Ryota Takahashi, Tomoki Kato, Hidetsugu Ikeda
  • Patent number: 9954174
    Abstract: There is provided a copolymer having Formula I In Formula I: A is a monomeric unit containing at least one triarylamine group; B? is a monomeric unit having at least three points of attachment in the copolymer; C? is an aromatic monomeric unit or a deuterated analog thereof; E is the same or different at each occurrence and can be H, D, halide, alkyl, silyl, germyl, aryl, arylamino, siloxane, a crosslinkable group, deuterated alkyl, deuterated silyl, deuterated germyl, deuterated aryl, deuterated arylamino, deuterated siloxane, or a deuterated crosslinkable group; a, b, and c are the same or different and are mole fractions, such that a+b+c=1, and a and b are non-zero.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: April 24, 2018
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Nora Sabina Radu, Juergen Weber, Adam Fennimore, Arjan Zoombelt, Phillip Sharrow, Michael Henry Howard, Jr., Tiffany N Hoerter, Gene M Rossi
  • Patent number: 9954190
    Abstract: An organic electroluminescent element that uses a compound expressed by the following general formula emits dark blue light and exhibits little change in chromaticity during brightness modulation. (n1 is an integer from 0 to 8; the R1 [groups] are each independently a substituent substituted for a hydrogen atom of the pyrene skeleton; X is CRaRb (Ra and Rb are each independently a hydrogen atom or a substituent), O, S, or SiRdRe (Rd and Re are each independently a hydrogen atom or a substituent); and A1 to A4 represent each independently either N or CRf (Rf represents a hydrogen atom or a substituent, and two adjacent Rf [groups] may jointly form a saturated or unsaturated ring, but no more than two rings may be formed jointly by two or more of the Rf [groups]).
    Type: Grant
    Filed: June 5, 2012
    Date of Patent: April 24, 2018
    Assignee: UDC IRELAND LIMITED
    Inventors: Saki Takada, Yasunori Yonekuta, Toshihiro Ise, Tetsu Kitamura, Toru Watanabe, Wataru Sotoyama, Koji Takaku, Katsuyuki Youfu
  • Patent number: 9954186
    Abstract: Embodiments relate to a delayed fluorescence compound of Formula 1: or Formula 2: The excitons in the triplet state are engaged in emission such that the emitting efficiency of the delayed fluorescent compound is increased. Embodiments also relate to a display device with an organic light emitting diode (OLED) that includes the delayed fluorescence compound.
    Type: Grant
    Filed: November 11, 2015
    Date of Patent: April 24, 2018
    Assignee: LG Display Co., Ltd.
    Inventors: Joong-Hwan Yang, Kyung-Jin Yoon, Hyo-Jin Noh, Dae-Wi Yoon, In-Ae Shin, Jun-Yun Kim
  • Patent number: 9947891
    Abstract: The present invention provides an OLED packaging method and an OLED packaging structure. The OLED packaging method includes the following steps: providing a TFT substrate (1) and a package lid (2); forming air channels (21) on the package lid (2); forming an OLED device (11) on the TFT substrate (1); coating a loop of desiccant (12) on the TFT substrate (1) along an outer circumference of the OLED device (11) and coating a loop of a dam (13) along an outer circumference of the desiccant (12); laminating the TFT substrate (1) and the package lid (2) together; and pressing the TFT substrate (1) and the package lid (2) together and applying irradiation of ultraviolet light to cure the dam (13).
    Type: Grant
    Filed: April 3, 2015
    Date of Patent: April 17, 2018
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Jiajia Qian
  • Patent number: 9947879
    Abstract: An anthracene derivative represented by the following formula (1): wherein in the formula (1), L1 is selected from a single bond and a linking group, and the linking group is selected from a divalent arylene group, a divalent heterocyclic group, and a group formed by linking of 2 to 4 of divalent arylene groups and/or divalent heterocyclic groups. Ar1 is selected from the following formulas (2) and (3). In the formulas (2) and (3), X is selected from an oxygen atom and a sulfur atom. In the formula (2), any one of R11 to R14 is used for bonding to L1. In the formula (3), any one of R21 to R24 is used for bonding to L1. Ar2 is selected from a substituted or unsubstituted aryl group including 6 to 50 ring carbon atoms and a substituted or unsubstituted heterocyclic group including 5 to 50 ring atoms.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: April 17, 2018
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Hirokatsu Ito, Hiroyuki Saito, Yumiko Mizuki, Masahiro Kawamura
  • Patent number: 9944846
    Abstract: This invention relates to a composition including (a) a dopant, (b) a first host having at least one unit of Formula I, and (c) a second host compound having Formula II. The formulae have the structures: where Q is a fused ring linkage having the formula In Formula I: Ar1 is an aromatic group including at least one electron-withdrawing group or a deuterated analog; Ar2 is an aryl group, an aromatic group including at least one electron-withdrawing group or a deuterated analog; R1 and R2 are the same or different at each occurrence and are H, D, aryl or deuterated aryl. In Formula II: R3 is the same or different at each occurrence and is D, aryl, or deuterated aryl, with the proviso that at least one R3 is aryl or deuterated aryl; R4 and R5 are the same or different at each occurrence and are D, aryl, or deuterated aryl; a is an integer from 1-4; and b and c are the same or different and are an integer from 0-4.
    Type: Grant
    Filed: August 28, 2014
    Date of Patent: April 17, 2018
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Ying Wang, Steven Kit Chow, Norman Herron, Michael Henry Howard, Jr.
  • Patent number: 9935291
    Abstract: An organic light-emitting device includes a lower electrode, an upper electrode, and an organic layer disposed between these electrodes. The organic layer is a laminate of a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer, and an electron injection layer. The light-emitting layer includes a host and a first dopant. The hole transport layer includes a hole transporting material, and the electron transport layer includes an electron transporting material. The hole transporting material and the electron transporting material have functional groups. The first dopant in the light-emitting layer has a functional group, and is concentrated on the side of the light-emitting layer in contact with the hole transport layer or the electron transport layer.
    Type: Grant
    Filed: December 27, 2011
    Date of Patent: April 3, 2018
    Assignee: HITACHI, LTD.
    Inventors: Sukekazu Aratani, Hirotaka Sakuma, Hiroshi Sasaki
  • Patent number: 9935285
    Abstract: A multiple emitter organic light emitting diode (OLED) is provided. The OLED comprises a host having a triplet energy gap. At least one emitter having a triplet energy gap greater than the triplet energy gap of the host is doped into the host and at least one other emitter having a triplet energy gap less than the triplet energy gap of the host is also doped into the host.
    Type: Grant
    Filed: October 3, 2016
    Date of Patent: April 3, 2018
    Assignee: OTI Lumionics Inc.
    Inventors: Michael Helander, Zhibin Wang, Jacky Qiu, Zhenghong Lu
  • Patent number: 9935275
    Abstract: An organic electroluminescence device including an anode, a cathode, an organic layer disposed between the anode and the cathode, the organic layer containing a hole injection layer, a hole transport layer and an emission layer containing a host material, wherein the hole injection layer, the hole transport layer and the emission layer each contain a phosphorescent light-emitting material, wherein the hole injection layer contains the phosphorescent light-emitting material in an amount of 10% by mass or more but less than 50% by mass, and wherein a concentration of the phosphorescent light-emitting material contained in the hole transport layer is lower than that in the hole injection layer, and a concentration of the phosphorescent light-emitting material contained in the emission layer is lower than that in the hole injection layer and higher than that in the hole transport layer.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: April 3, 2018
    Assignee: UDC IRELAND LIMITED
    Inventor: Naoyuki Hayashi
  • Patent number: 9929368
    Abstract: A tandem light-emitting element employing an inverted-structure is provided. The light-emitting element includes a cathode, a first EL layer over the cathode, a second EL layer over the first EL layer, an anode over the second EL layer, and an intermediate layer. The intermediate layer is between the first EL layer and the second EL layer. The intermediate layer includes a first layer, a second layer over the first layer, and a third layer over the second layer. The first layer includes a hole-transport material and an electron acceptor. The third layer includes an alkali metal or an alkaline earth metal. The second layer includes an electron-transport material.
    Type: Grant
    Filed: January 28, 2015
    Date of Patent: March 27, 2018
    Assignee: Semiconductor Energy Laboratory Co., LTD.
    Inventors: Riho Kataishi, Toshiki Sasaki, Yusuke Nonaka, Hiromi Seo
  • Patent number: 9929361
    Abstract: A compound having a structure of formula OsL1L2 is described. In the structure of OsL1L2, L1 is a tetradentate ligand coordinated to Os; L2 is a bidentate ligand coordinated to Os; and L1 adopts a non-square planar coordination geometry. Formulations and devices, such as an OLEDs, that include the compound of Formula OsL1L2 are also described.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: March 27, 2018
    Assignee: Universal Display Corporation
    Inventors: Jui-Yi Tsai, Chuanjun Xia, Miguel A. Esteruelas, Roberto G. Alabau, Montserrat Olivan, Enrique Oñate
  • Patent number: 9929346
    Abstract: Provided are: an organic electronic material which can be easily multilayered and that can be used in substrates, such as resin, that cannot be processed at high temperatures; an ink composition containing the same; an organic thin film formed using said organic electronic material or said ink composition; and an organic electronic element and an organic EL element that are formed using said organic thin film and that have a superior luminous efficacy and emission lifespan than conventional elements. Specifically, provided are: an organic electronic material that is characterized by containing an oligomer or a polymer having a structure that branches into three or more directions and has at least one polymerizable substituent; an ink composition containing said organic electronic material; and an organic thin film prepared using the aforementioned organic electronic material. Further, provided are an organic electronic element and an organic electroluminescent element containing said organic thin film.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: March 27, 2018
    Assignee: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Shigeaki Funyuu, Kenichi Ishitsuka, Yousuke Hoshi
  • Patent number: 9929111
    Abstract: A method of manufacturing a layer structure includes: forming a first layer over a substrate; planarizing the first layer to form a planarized surface of the first layer; and forming a second layer over the planarized surface; wherein a porosity of the first layer is greater than a porosity of the substrate and greater than a porosity of the second layer; wherein the second layer is formed by physical vapor deposition; and wherein the first layer and the second layer are formed from the same solid material.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: March 27, 2018
    Assignee: Infineon Technologies AG
    Inventors: Martin Mischitz, Markus Heinrici, Barbara Eichinger, Manfred Schneegans, Stefan Krivec
  • Patent number: 9923169
    Abstract: There are provided a film and an organic electronic device. The present application may provide a film that may be provided for an evaluation method in which reliability of an encapsulant film is simply and easily evaluated only by measuring a haze immediately before the encapsulant film is used, thereby a failure of a product is determined and reliability may be predicted.
    Type: Grant
    Filed: June 19, 2014
    Date of Patent: March 20, 2018
    Assignee: LG Chem, Ltd.
    Inventors: Hyun Jee Yoo, Seung Min Lee, Yoon Gyung Cho, Kyung Yul Bae, Jung Sup Shim, Suk Ky Chang, Hyun Suk Kim, Jung Ok Moon, Ban Seok Choi, Se Woo Yang
  • Patent number: 9923141
    Abstract: A polymer including a structural unit represented by the following formula (A). In the formula (A), P is independently a group represented by the following formula (P), a is an integer of 2 to 5, and b is an integer of 0 to 5. In the formula (P), A is independently a nitrogen atom or CR; X is a single bond, O, S, C(R)2 or NR. R is independently a hydrogen atom, a substituted or unsubstituted alkyl group including 1 to 20 carbon atoms or the like, or a single bond used for bonding to another P or L, provided that at least one R contained in (P)a is represented by any one of the following formulas (3) to (7).
    Type: Grant
    Filed: October 16, 2012
    Date of Patent: March 20, 2018
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Akinori Yomogita, Hironori Kawakami, Masami Watanabe, Kiyoshi Ikeda, Masahiro Kawamura, Nobuhiro Yabunouchi, Tomoki Kato
  • Patent number: 9923031
    Abstract: An organic light-emitting diode (OLED) array substrate and a display apparatus are provided. The OLED array substrate includes a plurality of OLEDs; the OLED includes an anode, a light-emitting layer and a cathode which are provided sequentially; the light-emitting layers are divided into a plurality of types by color (that is, the light-emitting layers are configured for emitting light of a plurality of colors), and are made of a host material and a guest material doped in the host material; and the OLED further includes an exciton blocking layer provided between the cathode and the light-emitting layer and in contact with the light-emitting layer, which is made of a host material of one light-emitting layer, and the host material of the one light-emitting layer has the biggest highest occupied molecular orbital energy level and the biggest triplet state energy level in the host materials of all light-emitting layers.
    Type: Grant
    Filed: October 31, 2014
    Date of Patent: March 20, 2018
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xinwei Gao, Na Li
  • Patent number: 9923149
    Abstract: Provided is a novel heterocyclic compound, a novel heterocyclic compound that can be used in a light-emitting element, or a highly reliable light-emitting device, electronic device, and lighting device in each of which the light-emitting element using the novel heterocyclic compound is used. One embodiment of the present invention is a heterocyclic compound represented by General Formula (G1). In General Formula (G1), each of A1 and A2 independently represents nitrogen or carbon bonded to hydrogen, and at least one of A1 and A2 represents nitrogen; Ar represents a substituted or unsubstituted arylene group having 6 to 18 carbon atoms; B represents a substituted or unsubstituted fluorenyl group; and R1 represents hydrogen, an alkyl group having 1 to 6 carbon atoms, or an aryl group having 6 to 13 carbon atoms.
    Type: Grant
    Filed: May 20, 2015
    Date of Patent: March 20, 2018
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hideko Inoue, Tomoka Hara, Yasushi Kitano, Hiromi Seo, Tatsuyoshi Takahashi, Satoshi Seo
  • Patent number: 9923163
    Abstract: The invention relates to an organic light emitting diode device having an electrode sheet of a light emitting area and an electrode contact in contact with the electrode sheet, to a method for forming such OLED device and to method of operating such OLED device. In order to provide such OLED device having a reduced tendency for the occurrence of hot spots, the present invention provides for reducing a local and/or average regional current density of a current flowing in operation of the lighting device through an interface between the electrode sheet and the electrode contact in a corner area of the interface.
    Type: Grant
    Filed: November 19, 2014
    Date of Patent: March 20, 2018
    Assignee: OLEDWorks GmbH
    Inventors: Florent Monestier, Christian Büttner