Electroluminescent Patents (Class 428/917)
  • Patent number: 9893294
    Abstract: Small organic molecule semi-conducting chromophores containing a pyridalthiadiazole, pyridaloxadiazole, or pyridaltriazole core structure are disclosed. Such compounds can be used in organic heterojunction devices, such as organic small molecule solar cells and transistors.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: February 13, 2018
    Assignee: The Regents of the University of California
    Inventors: Gregory C. Welch, Corey V. Hoven, Thuc-Quyen Nguyen
  • Patent number: 9394226
    Abstract: 3,4-Dicarboalkoxybiphenyl-3?,4?-dicarboxylic acid represented by the general formula (1): in which R11 and R12 each represents an alkyl group having 1 to 4 carbon atoms, and n represents the number of waters of hydration that is 0 or 1, and the corresponding anhydride.
    Type: Grant
    Filed: October 1, 2014
    Date of Patent: July 19, 2016
    Assignee: UBE INDUSTRIES, LTD.
    Inventors: Yasushi Yamamoto, Yasutaka Yoshida, Hikaru Yatabe, Yoshihiro Yamauchi, Tetsurou Tsuji
  • Patent number: 9040176
    Abstract: An organic light-emitting device including: a substrate; a display unit on the substrate; and an encapsulation layer covering the display unit, the encapsulation layer having an alternating stack structure of an organic layer and an inorganic layer, and the organic layer including a polymer polymerized from monomers of Formula 1 and Formula 2:
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: May 26, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Nam-Jin Kim, Chul-Hwan Park
  • Patent number: 9040719
    Abstract: A carbazole derivative represented by the general formula (1) is provided. In the formula, Ar1 represents a substituted or unsubstituted aryl group having 6 to 10 carbon atoms which form a ring; ? and ? independently represent a substituted or unsubstituted arylene group having 6 to 12 carbon atoms which form a ring; R1 represents an alkyl group having 1 to 4 carbon atoms or a substituted or unsubstituted aryl group having 6 to 10 carbon atoms which form a ring; and R11 to R17 and R21 to R28 independently represent hydrogen, an alkyl group having 1 to 4 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 10 carbon atoms which form a ring.
    Type: Grant
    Filed: August 7, 2013
    Date of Patent: May 26, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hiroko Nomura, Harue Osaka, Takahiro Ushikubo, Satoshi Seo
  • Patent number: 9040172
    Abstract: The present invention describes novel indenofluorene derivatives which can preferably be employed as matrix materials for phosphorescent dopants or as electron-transport materials, in particular for use in the emission and/or charge-transport layer of electroluminescent devices. The invention furthermore relates to polymers which comprise these compounds as structural units and to a process for the preparation of the compounds according to the invention and to electronic devices which comprise same.
    Type: Grant
    Filed: June 1, 2010
    Date of Patent: May 26, 2015
    Assignee: Merck Patent GmbH
    Inventors: Amir Hossain Parham, Christof Pflumm, Teresa Mujica-Fernaud, Arne Buesing, Holger Heil
  • Patent number: 9040720
    Abstract: A novel substance with which an increase in life and emission efficiency of a light-emitting element can be achieved is provided. A carbazole compound having a structure represented by General Formula (G1) is provided. Note that a substituent which makes the HOMO level and the LUMO level of a compound in which a bond of the substituent is substituted with hydrogen deep and shallow, respectively is used as each of substituents in General Formula (G1) (R1, R2, Ar3, and ?3). Further, a substituent which makes the band gap (Bg) and the T1 level of a compound in which a bond of the substituent is substituted with hydrogen wide and high is used as each of the substituents in General Formula (G1) (R1, R2, Ar3, and ?3).
    Type: Grant
    Filed: November 11, 2013
    Date of Patent: May 26, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Harue Osaka, Takako Takasu, Hiroshi Kadoma, Yuko Kawata, Satoko Shitagaki, Hiromi Nowatari, Tsunenori Suzuki, Nobuharu Ohsawa, Satoshi Seo
  • Patent number: 9040718
    Abstract: Compounds (including polymers) for use in hybrid host materials which can be used in electroluminescent devices. The compounds comprise at least one electron-transporting moiety and at least one hole-transporting moiety which are joined by a flexible linker. Hybrid host materials comprising the compounds exhibit stability against phase separation, elevated glass transition temperature, morphological stability against crystallization, and isolation of the electron transporting moiety and hole transporting moiety ?-systems.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: May 26, 2015
    Assignee: The University of Rochester
    Inventors: Shaw H. Chen, Lichang Zeng, Thomas Yung-Hsin Lee
  • Patent number: 9040175
    Abstract: The present invention relates to an electronic device comprising at least one organic semiconducting material according to the following formula (I): wherein R1-4 are independently selected from H, halogen, CN, substituted or unsubstituted C1-C20-alkyl or heteroalkyl, C6-C20-aryl or C5-C20-heteroaryl, C1-C20-alkoxy or C6-C20-aryloxy, Ar is selected from substituted or unsubstituted C6-C20-aryl or C5-C20-heteroaryl, and R5 is selected from substituted or unsubstituted C6-C20-aryl or C5-C20-heteroaryl, H, F or formula (II).
    Type: Grant
    Filed: June 8, 2011
    Date of Patent: May 26, 2015
    Assignee: NOVALED AG
    Inventors: Omrane Fadhel, Ramona Pretsch
  • Patent number: 9034482
    Abstract: The present invention relates to the improvement of organic electroluminescent devices which consist of a certain matrix material which has been doped with at least one phosphorescent emitter, and which are characterized in that the doping zone of the emitter in the matrix at right angles to the layer extends only over a part of the matrix layer.
    Type: Grant
    Filed: September 16, 2004
    Date of Patent: May 19, 2015
    Assignee: Merck Patent GmbH
    Inventors: Horst Vestweber, Anja Gerhard, Philipp Stössel
  • Patent number: 9034487
    Abstract: A light-emitting element material including an ionic iridium complex in which a 2,6-bis(2-picolinyl)pyridine structure is coordinated to iridium is provided. Alternatively, a light-emitting element material including an ionic iridium complex represented by the following structural formula (1) is provided. In addition, a light-emitting element including the light-emitting element material is provided.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: May 19, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hideko Inoue, Satoshi Seo
  • Patent number: 9034485
    Abstract: The present invention relates to compounds of the formula (1) and to the use thereof in organic electronic devices, and to organic electronic devices which comprise compounds of the formula (1), preferably as hole-transport materials and/or as emitting materials.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: May 19, 2015
    Assignee: Merck Patent GmbH
    Inventors: Arne Buesing, Holger Heil, Philipp Stoessel, Amir Hossain Parham, Rocco Fortte, Jonas Valentin Kroeber
  • Patent number: 9028980
    Abstract: The present invention relates to an organic electroluminescent element which comprises two or more hole injection/transport layers each formed by a wet film formation method using a composition containing, as a hole-injecting/transporting compound, an arylamine polymer compound that has a repeating unit having a triarylamine structure therein, in which when the number of atoms present on the path which is the smallest in the number of atoms present thereon, of the paths which each connect the nonaromatic tertiary nitrogen atoms contained in any two triarylamine structures present in each polymer compound, is taken as N: the minimum number of atoms between nitrogen atoms in the compound, then the N in each hole injection/transport layer is in a specific state.
    Type: Grant
    Filed: July 15, 2013
    Date of Patent: May 12, 2015
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Tomohiro Abe, Futoshi Tanaka, Kazuki Okabe, Atsushi Takahashi, Koichiro Iida, Ichiro Imada
  • Patent number: 9028976
    Abstract: A highly stable organic EL material having the properties of both benzofluoranthene and anthracene structures is provided. The organic EL device has at least one organic compound layer containing a compound presented by the general formula (I) below: (in which L is a linking group linking any one of the positions 1 to 12 and any one of the positions 13 to 22; the unlinked positions 1 to 22 are substituted by any of a hydrogen atom, substituted or unsubstituted aryl group, substituted or unsubstituted heterocyclic group, substituted or unsubstituted alkyl group, and aromatic amino group; and L presents any of a single bond, substituted or unsubstituted arylene group, substituted or unsubstituted heterocyclic group, and substituted or unsubstituted alkylene group).
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: May 12, 2015
    Assignee: Futaba Corporation
    Inventors: Akira Ebisawa, Hajime Amano, Sumiko Kitagawa, Tetsushi Inoue
  • Patent number: 9028979
    Abstract: The present invention relates to electroluminescent devices, comprising a compound of the formula (I) as a component of the transporting/injecting and/or electron blocking layer. The compounds of formula (I) may function alone, or in combination with dopants to provide improved efficiency, driving voltage and/or lifetime of electroluminescent devices.
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: May 12, 2015
    Assignee: BASF SE
    Inventors: Christian Schildknecht, Christian Lennartz, Soichi Watanabe, Gerhard Wagenblast, Peter Murer, Thomas Schäfer, Natalia Chebotareva, Andrea Ricci, Kristina Bardon
  • Patent number: 9023491
    Abstract: Provided are a light-emitting element in which a driving voltage increase can be suppressed and a light-emitting device which has reduced power consumption by including the light-emitting element. The element includes an EL layer between an anode and a cathode, and has a first, a second, and a third layer between the cathode and the EL layer. The first layer is between and in contact with the cathode and the second layer and includes a hole-transport substance. The second layer is between and in contact with the first the third layers and includes a phthalocyanine-based material. The third layer is between and in contact with the second and EL layers and includes an alkali metal, an alkaline-earth metal, a rare-earth metal, an alkali metal compound, an alkaline-earth metal compound, or a rare-earth metal compound. The phthalocyanine-based material has a metal-oxygen bond.
    Type: Grant
    Filed: March 18, 2011
    Date of Patent: May 5, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hiromi Nowatari, Satoshi Seo
  • Patent number: 9023489
    Abstract: Disclosed herein are red phosphorescent compounds of the following formula: wherein ?includes a phenyl part and a quinoline part, each ring of the phenyl part having at least one substituent selected from hydrogen, C1-C4 alkyl groups and C1-C4 alkoxy groups and ?is selected from 2,4-pentanedione, 2,2,6,6,-tetramethylheptane-3,5-dione, 1,3 -propanedione, 1,3-butanedione, 3,5-heptanedione, 1,1,1-trifluoro-2,4-pentanedione, 1,1,1,5,5,5 -hexafluoro-2,4-pentanedione and 2,2-dimethyl-3,5-hexanedione.
    Type: Grant
    Filed: November 6, 2006
    Date of Patent: May 5, 2015
    Assignee: LG Display Co., Ltd.
    Inventors: Jung Keun Kim, Jeong Dae Seo, Hyun Cheol Jeong, Chun Gun Park, Jong Kwan Bin, Kyung Hoon Lee, Sung Hoon Pieh
  • Patent number: 9017825
    Abstract: The present invention relates to anthracene derivatives which are suitable for use in organic electroluminescent devices, and to organic electroluminescent devices containing these anthracene derivatives.
    Type: Grant
    Filed: December 7, 2006
    Date of Patent: April 28, 2015
    Assignee: Merck Patent GmbH
    Inventors: Holger Heil, Arne Buesing, Philipp Stoessel
  • Patent number: 9017826
    Abstract: Porphyrin compounds are provided. The compounds may further comprise a fused polycyclic aromatic hydrocarbon or a fused heterocyclic aromatic. Fused polycyclic aromatic hydrocarbon s and fused heterocyclic aromatics may extend and broaden absorption, and modify the solubility, crystallinity, and film-forming properties of the porphyrin compounds. Additionally, devices comprising porphyrin compounds are also provided. The porphyrin compounds may be used in a donor/acceptor configuration with compounds, such as C60.
    Type: Grant
    Filed: August 25, 2010
    Date of Patent: April 28, 2015
    Assignees: The University of Southern California, The Regents of the University of Michigan
    Inventors: Stephen R. Forrest, Jeramy D. Zimmerman, Mark E. Thompson, Viacheslav Diev, Kenneth Hanson
  • Patent number: 9017827
    Abstract: A compound for an organic optoelectronic device, an organic light emitting diode, and a display device, the compound including sequentially combined substituents represented by the following Chemical Formulae 1 to 3:
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: April 28, 2015
    Assignee: Cheil Industries, Inc.
    Inventors: Sung-Hyun Jung, Hyung-Sun Kim, Ho-Jae Lee, Eun-Sun Yu, Mi-Young Chae, Ja-Hyun Kim
  • Patent number: 9012035
    Abstract: Disclosed is an organic electroluminescence device having a longer drive life. The organic electroluminescence device includes a light emitting layer which contains a luminescent dye and a host material having a nitrogen-containing aromatic heterocyclic ring. The luminescence resulting from the hole transport layer adjacent to the light emitting layer is less than one-hundredth of the luminescence resulting from the luminescent dye.
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: April 21, 2015
    Assignees: Pioneer Corporation, Mitsubishi Chemical Corporation
    Inventors: Taishi Tsuji, Shin Kawami, Hideki Sato, Masayoshi Yabe
  • Patent number: 9012041
    Abstract: A light-emitting element includes an EL layer between an anode and a cathode, and a first layer, a second layer, and a third layer between the cathode and the EL layer. The first layer provided between the cathode and the second layer is in contact with the cathode and the second layer, and includes a substance having a hole-transport property and an acceptor substance. The second layer provided between the first layer and the third layer is in contact with the first layer and the third layer, and includes a phthalocyanine-based material. The third layer provided between the second layer and the EL layer is in contact with the second layer and the EL layer, and includes an alkali metal, an alkaline-earth metal, a rare-earth metal, an alkali metal compound, an alkaline-earth metal compound, or a rare-earth metal compound.
    Type: Grant
    Filed: March 4, 2011
    Date of Patent: April 21, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hiromi Nowatari, Satoshi Seo
  • Patent number: 9012038
    Abstract: A phosphorescent metal complex compound, a method for the preparation thereof and a radiation component, in particular an organic light emitting electrochemical cell (OLEEC) use a bidentate ligand containing a triazole unit. Some of the blue emitters shown here for the first time, in particular the class of iridium complex compounds presented here, are the bluest emitters that have ever existed.
    Type: Grant
    Filed: July 15, 2009
    Date of Patent: April 21, 2015
    Assignee: Osram GmbH
    Inventors: Luisa De Cola, David Hartmann, Wiebke Sarfert, Günter Schmid
  • Patent number: 9012042
    Abstract: A condensed-cyclic compound represented by Formula 1 below, an organic light-emitting device including the same, and a flat panel display apparatus including the organic light-emitting device: X1, Ar1, Ar2, Ar3, Ar4, Ar5, Ar6, Ar7, Ar8, Ar9, Ar10, Ar11, and Ar12 being described in the detailed description of the invention. The organic light-emitting device including an organic layer including the compound above has low driving voltage and high emission efficiency.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: April 21, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hee-Yeon Kim, Seung-Gak Yang, Jeoung-In Yi, Jae-Yong Lee
  • Patent number: 9005778
    Abstract: There is provided a novel organic compound suitably used for a blue light-emitting device and an organic light-emitting device including the novel organic compound. The organic compound is an acephenanthryleno[4,5-k]benzo[e]acephenanthrylene derivative.
    Type: Grant
    Filed: April 19, 2011
    Date of Patent: April 14, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tomonari Horikiri, Hiroyuki Tomono, Jun Kamatani
  • Patent number: 9005775
    Abstract: A composition includes: (B) an arylamine derivative having at least one polymerizable group; and (A) a cyano group-free azo based polymerization initiator.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: April 14, 2015
    Assignee: FUJIFILM Corporation
    Inventors: Naoyuki Hayashi, Ryo Nishio, Saki Takada
  • Patent number: 9005777
    Abstract: A heterocyclic compound represented by Formula 1 below, and an organic light-emitting diode including the heterocyclic compound, and a flat display device including the organic light-emitting diode. wherein Ar1 to Ar4, X1, X2, Y1, Y2, L1, and m are defined as in the specification.
    Type: Grant
    Filed: March 7, 2012
    Date of Patent: April 14, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hye-Jin Jung, Seok-Hwan Hwang, Young-Kook Kim, Jin-O Lim, Sang-Hyun Han, Jong-Hyuk Lee
  • Patent number: 9005772
    Abstract: Compounds are provided that comprise a heterocyclic carbene ligand. In particular, an oxazole or a thioazole carbene are used in place of the traditional imidazole carbene. These compounds may be used in OLEDs to provide devices having improved properties, such as stability and color-tuning. Additionally, a novel methodology to synthesize heterocyclic carbene metal complexes is provided.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: April 14, 2015
    Assignee: Universal Display Corporation
    Inventors: Jui-Yi Tsai, Zeinab Elshenawy
  • Patent number: 9005779
    Abstract: Disclosed are a compound comprising a five-membered hetero ring, an organic electrical element using the same and a terminal thereof.
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: April 14, 2015
    Assignee: Duk San Neolux Co., Ltd.
    Inventors: Junghwan Park, Daesung Kim, Heesun Ji, Soungyun Mun, Sunhee Lee, Bumsung Lee
  • Patent number: 9005774
    Abstract: In one aspect, an organic light emitting diode device that includes a first electrode, a second electrode facing the first electrode, an emission layer interposed between the first electrode and the second electrode and an auxiliary layer interposed between either one of the first electrode and the second electrode and the emission layer, wherein the auxiliary layer includes a substituted or unsubstituted pyrene-based compound having at least one appended phenyl group is provided.
    Type: Grant
    Filed: August 22, 2011
    Date of Patent: April 14, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Mie-Hwa Park, Tae-Shick Kim
  • Patent number: 9005773
    Abstract: A novel substance exhibiting phosphorescence is provided. The novel substance is an organometallic complex represented by General Formula (G1). In General Formula (G1), R1 represents a haloalkyl group having 1 to 9 carbon atoms which may have a substituent. In addition, R2 represents any of an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms which may have a substituent, and an aryl group having 6 to 12 carbon atoms which may have a substituent. Further, Ar represents an arylene group having 6 to 13 carbon atoms which may have a substituent. M represents either a Group 9 element or a Group 10 element.
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: April 14, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hideko Inoue, Tomoka Nakagawa, Nobuharu Ohsawa, Satoshi Seo
  • Patent number: 8999521
    Abstract: The present invention relates to anthracene derivatives, to the use thereof in organic electroluminescent devices, and to organic electroluminescent devices comprising these compounds.
    Type: Grant
    Filed: February 28, 2007
    Date of Patent: April 7, 2015
    Assignee: Merck Patent GmbH
    Inventors: Philipp Stoessel, Holger Heil, Amir Parham, Horst Vestweber
  • Patent number: 8999526
    Abstract: An organic photoelectric device may include an anode and a cathode configured to face each other, and an active layer between the anode and cathode, wherein the active layer includes a quinacridone derivative and a thiophene derivative having a cyanovinyl group.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: April 7, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kwang Hee Lee, Kyu Sik Kim, Kyung Bae Park, Dong-Seok Leem, Seon Jeong Lim
  • Patent number: 8999525
    Abstract: A condensed-cyclic compound is represented by Formula 1 below. An organic light-emitting device includes the condensed-cyclic compound. A flat panel display apparatus includes the organic light-emitting device. The organic light-emitting device includes an organic layer including the compound of Formula 1 and has low driving voltage, high emission efficiency, and a long lifetime.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: April 7, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jae-Yong Lee, Seung-Gak Yang, Hee-Yeon Kim, Jeoung-In Yi
  • Patent number: 8999523
    Abstract: Disclosed is a compound containing a divalent group represented by formula (I).
    Type: Grant
    Filed: July 29, 2009
    Date of Patent: April 7, 2015
    Assignee: Sumitomo Chemical Company, Limited
    Inventor: Tomoya Nakatani
  • Patent number: 8999524
    Abstract: An organic light-emitting device includes a first electrode, a mixed organic layer, an emission layer, an electron transport layer, and a second electrode. The mixed organic layer contains a fluorene derivative and a pyrazine derivative, and the electron transport layer contains a lithium quinolate and a pyridine derivative.
    Type: Grant
    Filed: April 29, 2011
    Date of Patent: April 7, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dong-Heon Kim, Tae-Shick Kim, Kwan-Hee Lee, Min-Seung Chun, Jung-Ha Son, Jae-Hyun Kwak, Mi-Kyung Kim, Choon-Woo Lim
  • Patent number: 8999527
    Abstract: An electronic device employing a polymeric anode with high work function.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: April 7, 2015
    Assignee: Postech Academy-Industry Foundation
    Inventors: Tae-Woo Lee, Seong-Hoon Woo
  • Patent number: 8999530
    Abstract: The present invention provides a new compound and an organic electronic device using the same. The compound according to the present invention may serve as hole injection, hole transporting, electron injection and transporting, and light emitting materials and the like in an organic electronic device comprising an organic light emitting device, and the organic electronic device according to the present invention shows excellent properties in terms of efficiency, driving voltage and service life.
    Type: Grant
    Filed: June 12, 2012
    Date of Patent: April 7, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Changhwan Shin, Kongkyeom Kim, Dong Hoon Lee, Jungi Jang, Minseung Chun
  • Patent number: 8999528
    Abstract: A condensation compound is represented by Formula 1, 2, or 3 where R1 to R24 and A to F are further defined in the detailed description.
    Type: Grant
    Filed: January 8, 2013
    Date of Patent: April 7, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: So-Yeon Kim, Yoon-Hyun Kwak, Bum-Woo Park, Jong-Won Choi, Wha-Il Choi, Sun-Young Lee, Ji-Youn Lee, Jin-Young Yun
  • Patent number: 8993130
    Abstract: The present invention discloses a novel organic compound is represented by the following formula(I), the organic EL device employing the organic compound as host material or dopant material of emitting layer and/or as electron transporting material can lower driving voltage, prolong half-lifetime and increase the efficiency. wherein m represent an integer of 0 to 10, n represent an integer of 0 to 2. X is a divalent bridge selected from the atom or group consisting from O, S, C(R5)2, N(R5), Si(R5)2. Ar, R1 to R4 are substituents and the same definition as described in the present invention.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: March 31, 2015
    Inventors: Feng-Wen Yen, Cheng-Hao Chang
  • Patent number: 8993123
    Abstract: The present invention relates to the compounds of the formula (1) and to organic electroluminescent devices, in particular blue-emitting devices, in which these compounds are used as host material in the emitting layer and/or as electron-transport material.
    Type: Grant
    Filed: February 13, 2009
    Date of Patent: March 31, 2015
    Assignee: Merck Patent GmbH
    Inventors: Arne Buesing, Holger Heil, Philipp Stoessel
  • Patent number: 8993129
    Abstract: Fluorescence-emitting material which improves luminous efficiency of an organic light-emitting element such as an organic EL element or an organic PL element and an organic light-emitting element using the fluorescence-emitting material. The fluorescence-emitting material includes a compound having an indolocarbazole skeleton represented by the following general formula (1), as defined in the specification. The organic light-emitting element includes an organic EL element including: a substrate; an anode; a cathode; and a light-emitting layer, the anode and the cathode being laminated on the substrate and the light-emitting layer being sandwiched between the anode and the cathode, in which the light-emitting layer includes: the organic light-emitting material; and as a host material, an organic compound having excited triplet energy higher than that of the organic light-emitting material.
    Type: Grant
    Filed: December 2, 2010
    Date of Patent: March 31, 2015
    Assignees: Nippon Steel & Sumikin Chemical Co., Ltd., Kyushu University, National University Corporation
    Inventors: Ayataka Endo, Chihaya Adachi, Kazuaki Yoshimura, Atsushi Kawada, Hiroshi Miyazaki, Takahiro Kai
  • Patent number: 8993124
    Abstract: A polymer compound including: the repeating unit shown in the following formula (I) (wherein: Ar1 represents an arylene group, a divalent heterocyclic group, or a divalent aromatic amine; J1 and J2 each represent a direct bond, an alkylene group, or a phenylene group, and X1 represents an oxygen atom or a sulfur atom; i is an integer from 0 to 3; j is 0 or 1; m is 1 or 2; and R1 represents a hydrogen atom, an alkyl group, an alkoxy group, or the like) and the repeating unit shown in the following formula (II) (wherein: Ar2 represents a fluorene-diyl group; J3 and J4 each represent a direct bond, an alkylene group, or a phenylene group; X2 represents an oxygen atom or a sulfur atom; k is an integer from 0 to 3; l is 0 or 1; and n is 1 or 2).
    Type: Grant
    Filed: July 29, 2009
    Date of Patent: March 31, 2015
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Tomoya Nakatani, Keiko Kawaguchi
  • Patent number: 8993127
    Abstract: A substance having a hole-transport property and a wide band gap is provided. A fluorene compound represented by a general formula (G1) is provided. In the general formula (G1), ?1 and ?2 separately represent a substituted or unsubstituted arylene group having 6 to 13 carbon atoms; Ar1 represents a substituted or unsubstituted aryl group having 6 to 18 carbon atoms, a substituted or unsubstituted 4-dibenzothiophenyl group, or a substituted or unsubstituted 4-dibenzofuranyl group; n and k separately represent 0 or 1; Q1 represents sulfur or oxygen; and R1 to R15 separately represent hydrogen, an alkyl group having 1 to 12 carbon atoms, or an aryl group having 6 to 14 carbon atoms.
    Type: Grant
    Filed: September 7, 2011
    Date of Patent: March 31, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Harue Osaka, Takako Takasu, Hiromi Nowatari, Satoko Shitagaki, Nobuharu Ohsawa, Satoshi Seo, Kyoko Takeda, Sachiko Kawakami, Tsunenori Suzuki
  • Patent number: 8994017
    Abstract: A triplet light emitting device which has high efficiency and improved stability and which can be fabricated by a simpler process is provided by simplifying the device structure and avoiding use of an unstable material. In a multilayer device structure using no hole blocking layer conventionally used in a triplet light emitting device, that is, a device structure in which on a substrate, there are formed an anode, a hole transporting layer constituted by a hole transporting material, an electron transporting and light emitting layer constituted by an electron transporting material and a dopant capable of triplet light emission, and a cathode, which are laminated in the stated order, the combination of the hole transporting material and the electron transporting material and the combination of the electron transporting material and the dopant material are optimized.
    Type: Grant
    Filed: December 10, 2013
    Date of Patent: March 31, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hiroko Yamazaki, Atsushi Tokuda, Tetsuo Tsutsui
  • Patent number: 8993125
    Abstract: Objects are to provide the following: a substance that facilitates hole injection and has high triplet excitation energy; a light-emitting element having high emission efficiency using the substance that facilitates hole injection and has high triplet excitation energy; a light-emitting element having low driving voltage; and a light-emitting device, an electronic device, and a lighting device having low power consumption. Provided is a triazole derivative in which a dibenzothiophen-4-yl or dibenzofuran-4-yl group represented by General Formula (G2) is bonded to any one of Ar1 to Ar3 of a triazole derivative represented by General Formula (G1). In the formulae formulas, A represents oxygen or sulfur, Ar1 to Ar3 separately represent a substituted or unsubstituted aryl group having 6 to 13 carbon atoms, and R1 to R7 separately represent hydrogen, an alkyl group having 1 to 4 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 13 carbon atoms.
    Type: Grant
    Filed: May 18, 2011
    Date of Patent: March 31, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hiroshi Kadoma, Nobuharu Ohsawa, Satoshi Seo
  • Patent number: 8993126
    Abstract: In the light-emitting element in which a plurality of EL layers is separated from each other by a charge generation layer, provided are an electron relay layer in contact with an anode side of the charge generation region and an electron transport layer in contact with the electron relay layer. The electron transport layer contains an alkaline earth metal. A concentration gradient of the alkaline earth metal contained in the electron transport layer is such that the concentration of the alkaline earth metal becomes lower from an interface between the electron transport layer and the electron relay layer to the anode.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: March 31, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hiromi Nowatari, Satoshi Seo, Nobuharu Ohsawa
  • Patent number: 8987988
    Abstract: An object of the present invention is to provide an EL display device, which has a high operating performance and reliability. A third passivation film 45 is disposed so as to be in contact with an EL element 203 which comprises a pixel electrode (anode) 46, an EL layer 47 and a cathode 48, to make a structure in which heat generated by the EL element 203 is radiated. Further, the third passivation film 45 prevents alkali metals within the EL element 203 from diffusing into the TFTs side, and prevents moisture and oxygen of the TFTs side from penetrating into the EL element 203. More preferably, heat radiating effect is given to a fourth passivation film 50 to make the EL element 203 to be enclosed by heat radiating layers.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: March 24, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Jun Koyama, Kunitaka Yamamoto, Toshimitsu Konuma
  • Patent number: 8986858
    Abstract: Disclosed is an organic electroluminescent device (organic EL device) that is improved in luminous efficiency, sufficiently secures driving stability, and has a simple configuration. This organic EL device comprises organic layers between an anode and a cathode piled one upon another on a substrate and at least one organic layer selected from a light-emitting layer, a hole-transporting layer, an electron-transporting layer, and a hole-blocking layer contains a carbazole compound represented by the following formula (1). In the case where the light-emitting layer of the organic electroluminescent device contains a phosphorescent dopant and a host material, it is the carbazole compound that is contained as the host material.
    Type: Grant
    Filed: January 27, 2011
    Date of Patent: March 24, 2015
    Assignee: Nippon Steel & Sumikin Chemical Co., Ltd.
    Inventors: Masashi Tada, Junya Ogawa, Takahiro Kai, Megumi Matsumoto, Yasuhisa Tsutsumi
  • Patent number: 8986857
    Abstract: Provided is a novel compound which can be used for a transport layer or as a host material or a light-emitting material in a light-emitting element and with which a high-performance light-emitting element can be manufactured. A dibenzo[c,g]carbazole compound in which an aryl group having 14 to 30 carbon atoms and including at least anthracene is bonded to nitrogen of a dibenzo[c,g]carbazole derivative is synthesized. By use of the dibenzo[c,g]carbazole compound, a light-emitting element having very good characteristics can be obtained.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: March 24, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hiroki Suzuki, Satoshi Seo, Sachiko Kawakami, Tsunenori Suzuki
  • Patent number: 8987715
    Abstract: An organic electroluminescence device (1) includes: an anode (3); a cathode (4); and an emitting layer (5) provided between the anode (3) and the cathode (4). The emitting layer contains a first host, a second host and a phosphorescent dopant. A triplet energy of each of the first host and the second host is 2.8 eV or more. An ionization potential of the first host is 5.5 eV or less. An affinity Af1 of the first host is smaller than an affinity Af2 of the second host.
    Type: Grant
    Filed: June 8, 2011
    Date of Patent: March 24, 2015
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Kazuki Nishimura, Hitoshi Kuma, Chishio Hosokawa, Hideaki Nagashima, Masaki Numata