Patents Examined by J. L. Yang
  • Patent number: 9172043
    Abstract: Disclosed is a charge-transporting varnish containing a charge-transporting organic material, a good solvent, at least one poor solvent with high leveling properties, and at least one volatile poor solvent. The charge-transporting organic material is composed of a charge-transporting material consisting of a charge-transporting monomer or a charge-transporting oligomer having a number average molecular weight of 200 to 5000, or alternatively composed of such a charge-transporting material and an electron-accepting dopant material or a hole-accepting dopant material. This charge-transporting varnish enables to form a uniform and smooth charge-transporting thin film by a spray method or an ink jet method on an exposed electrode portion such as ITO or IZO of a substrate on which a structure of a simple or complicated pattern is formed beforehand.
    Type: Grant
    Filed: October 25, 2006
    Date of Patent: October 27, 2015
    Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Taku Kato, Takuji Yoshimoto, Go Ono
  • Patent number: 9157023
    Abstract: The invention relates to a light-emitting device comprising at least a substrate, an anode, a light-emitting layer and a cathode whereby the light-emitting layer contains an iridium complex IrL3 and whereby at least two ligands L are a dibenzoquinoline. The invention relates in particular to the complexes Ir(dibenzo[f,h]quinoline)2(pentane-2,4-dionate) and Ir(dibenzo[f,h]quinoline)3 which emit light with a wavelength of ?max=545 nm and ?max=595 nm respectively.
    Type: Grant
    Filed: November 8, 2004
    Date of Patent: October 13, 2015
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Herbert Friedrich Boerner, Helga Hummel
  • Patent number: 9150551
    Abstract: A carbazole compound in which the 2-position of a dibenzofuran skeleton or a dibenzothiophene skeleton is bonded to the 3-position of a carbazole skeleton and nitrogen of the carbazolyl group is bonded to the 9- or 10-position of an anthracene skeleton directly or via a phenylene group was able to be synthesized. It was found out that the carbazole compound has an excellent carrier-transport property, favorable film quality, and a wide band gap, and can be suitably used as a light-emitting element material and an organic semiconductor material.
    Type: Grant
    Filed: October 27, 2011
    Date of Patent: October 6, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hiroki Suzuki, Harue Osaka, Tsunenori Suzuki
  • Patent number: 9142784
    Abstract: The present invention relates to a highly efficient carbazole-based compound and to an organic electroluminescence device including the same. According to the present invention, provided are a compound for an organic electroluminescence device and an organic electroluminescence device including the compound, in which a carbazole-based phosphine oxide compound, which is a compound intended for an organic electroluminescence device, is employed to overcome the problems of conventional compounds for organic electroluminescence devices, i.e. those of instable thermal stability and low efficiency, and particularly, the compound of the present invention exhibits superior efficiency in pure-blue phosphorescent devices.
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: September 22, 2015
    Assignee: SK CHEMICALS CO., LTD.
    Inventors: Jun Yeob Lee, Soon Ok Jeon, Hyo Suk Son, Kyoung Soo Yook, Sang Eok Jang
  • Patent number: 9142783
    Abstract: One object of the present invention is to provide a light emitting element that includes an organic compound and an inorganic compound and has low driving voltage. The light emitting element of the invention includes a plurality of layers between a pair of electrodes, wherein the plurality of layers includes a layer that contains a carbazole derivative represented by a general formula (1) and an inorganic compound exhibiting an electron accepting property with respect to the carbazole derivative. By utilizing this structure, electrons are transported between the carbazole derivative and the inorganic compound and carriers are internally generated, and hence, the driving voltage of the light emitting element can be reduced.
    Type: Grant
    Filed: November 28, 2005
    Date of Patent: September 22, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Harue Nakashima, Sachiko Kawakami, Daisuke Kumaki, Satoshi Seo, Hisao Ikeda, Junichiro Sakata, Yuji Iwaki
  • Patent number: 9136477
    Abstract: An organic light emissive device, which comprises: an anode; a cathode; and an organic light emissive region between the anode and the cathode, which region comprises a polymeric electroluminescent material; wherein the emission from the polymeric electroluminescent material is color shifted by the presence of a color shifting unit in the polymer.
    Type: Grant
    Filed: December 19, 2006
    Date of Patent: September 15, 2015
    Assignee: CDT OXFORD LIMITED
    Inventors: Mark Dowling, Richard Wilson
  • Patent number: 9136481
    Abstract: A compound for an organic photoelectric device, an organic photoelectric device including the same, and a display device including the organic photoelectric device, the compound being represented by the following Chemical Formula 1:
    Type: Grant
    Filed: August 22, 2012
    Date of Patent: September 15, 2015
    Assignee: CHEIL INDUSTRIES, INC.
    Inventors: Dong-Min Kang, Mi-Young Chae, Myeong-Soon Kang, Sung-Hyun Jung, Ho-Kuk Jung, Nam-Heon Lee, Nam-Soo Kim
  • Patent number: 9136495
    Abstract: An organic light-emitting device including a first electrode, a plurality of hole transport layers, a plurality of intermediate layers, an emission layer, a plurality of electron transport layers, and a second electrode. The emission layer may include a host, an emitting dopant, and an auxiliary dopant. The host and the auxiliary dopant are able to transport different types of carriers.
    Type: Grant
    Filed: May 5, 2011
    Date of Patent: September 15, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventor: Yuji Hamada
  • Patent number: 9133095
    Abstract: This disclosure relates to chrysene compounds that are useful in electroluminescent applications. It also relates to electronic devices in which the active layer includes such a chrysene compound.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: September 15, 2015
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Weiying Gao, Norman Herron, Jeffrey A. Merlo, Vsevolod Rostovtsev
  • Patent number: 9126887
    Abstract: A material for organic electroluminescent devices including a 2,7-disubstituted naphthalene ring in its molecule of formulas (1) and (2): and an organic electroluminescent device including an organic thin film layer having one or more layers between a cathode and an anode. An organic electroluminescence device having the organic thin film layer which includes the material for organic electroluminescent devices and at least one kind of phosphorescent emitting materials has long lifetime and high current efficiency.
    Type: Grant
    Filed: December 25, 2009
    Date of Patent: September 8, 2015
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Toshihiro Iwakuma, Yoriyuki Takashima, Toshinari Ogiwara
  • Patent number: 9122089
    Abstract: A display device includes a light emitting unit and a display panel including a first color filter. The light emitting unit includes a light source generating a blue light, and a light-converting part converting the blue light into a white light and emitting the white light to an exterior. The first color filter, through which the white light passes, includes a first coloring agent that absorbs about 95% to about 100% of light having wavelength of about 420 nm to about 470 nm in the white light. Thus, a color reproducibility of the display device may be improved.
    Type: Grant
    Filed: November 1, 2010
    Date of Patent: September 1, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yui-Ku Lee, Chul Huh, Jin-Seuk Kim, Min Kang, Dong-Uk Kang, Sun-Young Chang
  • Patent number: 9118023
    Abstract: The present invention provides a novel compound that is capable of largely improving a life time, efficiency, electrochemical stability, and thermal stability of an organic electronic device, and an organic electronic device that comprises an organic material layer comprising the compound.
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: August 25, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Jae-Soon Bae, Ji-Eun Kim, Hye-Young Jang, Jeung-Gon Kim, Jun-Gi Jang, Sung-Kil Hong, Tae-Yoon Park, Dae-Woong Lee
  • Patent number: 9112170
    Abstract: It is an object to provide an element structure which is suitable for a light-emitting element using a phosphorescent compound. It is another object to provide a light-emitting element with high luminous efficiency by using the element structure. In particular, it is another object to provide a light-emitting element with high luminous efficiency and long life. A light-emitting element is manufactured, which includes a first light-emitting layer and a second light-emitting layer provided to be in contact with each other between a first electrode and a second electrode, where the first light-emitting layer includes a hole transporting host material and a phosphorescent compound, and the second light-emitting layer includes an electron transporting host material and the phosphorescent compound.
    Type: Grant
    Filed: March 5, 2007
    Date of Patent: August 18, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Nobuharu Ohsawa, Satoshi Seo, Hiroko Murata
  • Patent number: 9112179
    Abstract: An organic light emitting diode includes a display substrate assembly including an organic light emitting element; an encapsulation substrate assembly disposed on the display substrate assembly with a space therebetween and sealed with the display substrate assembly in a vacuum-tight manner; and a filling agent filling the space between the display substrate assembly and the encapsulation substrate assembly. The filling agent is adapted to selectively absorb external light entering through the encapsulation substrate assembly and incident on the organic light emitting element as a function of wavelength in a wavelength band of the external light to control transmittance.
    Type: Grant
    Filed: May 24, 2010
    Date of Patent: August 18, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Soon-Ryong Park, Hee-Seong Jeong, Woo-Suk Jung
  • Patent number: 9113536
    Abstract: The present invention relates to electroluminescent devices that comprise organic layers that contain triazole compounds of the formula (I), or formula (II). The compounds are suitable components of, for example, blue-emitting, durable, organo-electroluminescent layers. The electroluminescent devices may be employed for full color display panels in, for example, mobile phones, televisions and personal computer screens.
    Type: Grant
    Filed: April 19, 2006
    Date of Patent: August 18, 2015
    Assignee: BASF SE
    Inventors: Hidetaka Oka, Ramachandra V. Joshi, Junichi Tanabe, Sanjoy Lahiri, Dhaval Vashi, Preetam Ghogale
  • Patent number: 9105847
    Abstract: An organic EL display includes: lower electrodes arranged on a substrate to correspond to first organic EL elements of blue and second organic EL elements of any other color, respectively; hole injection/transport layers arranged on the lower electrodes; second organic light-emitting layers of the other color arranged on the hole injection/transport layers for the second organic EL elements; a first organic light-emitting layer of blue arranged on whole surfaces of the second organic light-emitting layers and the hole injection/transport layers for the first organic EL elements; an electron injection/transport layer arranged on a whole surface of the first light-emitting layer, the electron injection/transport layer made of a nitrogen-containing heterocyclic compound with an electron mobility of 1.0×10?6 cm2/Vs to 1.0×10?1 cm2/Vs both inclusive and having one or both of electron injection properties and electron transport properties; and an upper electrode arranged on the electron injection/transport layer.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: August 11, 2015
    Assignee: JOLED INC.
    Inventors: Tadahiko Yoshinaga, Tomoyuki Higo
  • Patent number: 9099669
    Abstract: An organic light-emitting device including a first electrode, a plurality of hole transport layers, a plurality of intermediate layers, an emission layer, a plurality of electron transport layers, and a second electrode. The emission layer may include a host, an emitting dopant, and an auxiliary dopant. The host and the auxiliary dopant are able to transport different types of carriers.
    Type: Grant
    Filed: May 5, 2011
    Date of Patent: August 4, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventor: Yuji Hamada
  • Patent number: 9099653
    Abstract: There is provided a compound having Formula I or Formula II: In the Formula: Ar1 is a single bond or an arylene; Ar2 is an aryl group; Ar3 is a single bond or an arylene; R1 is selected from H, D, aryl groups, alkyl groups, silyl groups, siloxane groups, fluoroalkyl groups, alkoxy groups, and fluoroalkoxy groups, or the two R1 groups may be joined together to form an aliphatic ring having 5-10 carbons; R2 is selected from D, aryl groups, alkyl groups, silyl groups, siloxane groups, fluoroalkyl groups, alkoxy groups, or fluoroalkoxy groups; M is a conjugated moiety; a is an integer from 0 to 2; b is an integer from 0 to 3; n is an integer equal to or greater than 1; and x and y are mole fractions where x+y=1.0.
    Type: Grant
    Filed: December 1, 2009
    Date of Patent: August 4, 2015
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Kyung-Ho Park, Nora Sabina Radu
  • Patent number: 9091804
    Abstract: A polymer film that has an in-plane retardation Re(?) and a thickness-direction retardation Rth(?) satisfying formula (i) and (ii), and that further has a surface energy of at least one surface is from 50 mN/m to 80 mN/m: 0?Re(630)?10, and |Rth(630)|?25; and??(i) |Re(400)?Re(700)|?10, and |Rth(400)?Rth(700)|?35.??(ii) in the formulae, Re(?) and Rth(?) are measurement values at the wavelength of ? nm, and an optically-compensatory film, an optical material such as a polarizer and a liquid-crystal display device using the polymer film.
    Type: Grant
    Filed: August 5, 2005
    Date of Patent: July 28, 2015
    Assignee: FUJIFILM Corporation
    Inventors: Tadashi Omatsu, Hajime Nakayama, Akihiro Matsufuji, Osamu Takahashi, Shigeaki Nimura, Takako Nishiura
  • Patent number: 9093652
    Abstract: A compound for an organic photoelectric device, the compound being represented by Chemical Formula 1 or 2:
    Type: Grant
    Filed: June 18, 2012
    Date of Patent: July 28, 2015
    Assignee: CHEIL INDUSTRIES, INC.
    Inventors: Sung-Hyun Jung, Myeong-Soon Kang, Ho-Kuk Jung, Nam-Soo Kim, Nam-Heon Lee, Eui-Su Kang, Dong-Min Kang, Mi-Young Chae