Patents by Inventor Masakazu Funahashi

Masakazu Funahashi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Material for organic electroluminescent device and organic electroluminescent device using same
    Patent number: 8178218
    Abstract: The present invention provides an organic electroluminescent device material composed of an aromatic amine derivative having a specific structure in which amine moieties are linked to a chrysene moiety; and an organic electroluminescent device having a cathode, an anode, and one or more organic thin-film layers interposed between the cathode and the anode, the organic thin-layers including at least a light-emitting layer, wherein at least one of the organic thin-film layers contains the organic electroluminescent device material in the form of single component material or a mixture of a plurality of components. The organic electroluminescent device material and the organic electroluminescent device containing the material attains a long service life and can emit blue light of high color purity at high emission efficiency.
    Type: Grant
    Filed: January 9, 2009
    Date of Patent: May 15, 2012
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventor: Masakazu Funahashi
  • AROMATIC AMINE DERIVATIVE, AND ORGANIC ELECTROLUMINESCENT ELEMENT COMPRISING SAME
    Publication number: 20120112169
    Abstract: An aromatic amine derivative represented by the following formula (1) wherein at least one of Ar1 to Ar4 is a heterocyclic group represented by the following formula (2) wherein X1 is an oxygen atom or a sulfur atom.
    Type: Application
    Filed: April 23, 2010
    Publication date: May 10, 2012
    Inventors: Yumiko Mizuki, Masakazu Funahashi, Masahiro Kawamura
  • FLUORANTHENE COMPOUND AND ORGANIC ELECTROLUMINESCENCE DEVICE USING SAME
    Publication number: 20120112179
    Abstract: A fluoranthene compound represented by the formula (1): wherein Z7 and Z12 are each aryl or heteroaryl; Ar0 is a single bond, aryl, or heteroaryl; R1 to R4 and R6 to R9 are each independently a hydrogen atom, alkyl, cycloalkyl, aryl, heteroaryl, or the like; and I is an integer of 1 to 4.
    Type: Application
    Filed: October 26, 2010
    Publication date: May 10, 2012
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Yumiko Mizuki, Masakazu Funahashi
  • Aromatic amine derivatives and organic electroluminescence devices using the same
    Patent number: 8164251
    Abstract: An aromatic amine derivative with a specified structure. An organic electroluminescence device which comprises one or more organic thin film layers having at least one light emitting layer sandwiched between a cathode and an anode, wherein at least one of the organic thin film layers comprises the aromatic amine derivative singly or in combination. The organic EL device employing the aromatic amine derivative has sufficient lifetime, exhibits an enhanced efficiency of light emission, and emits highly pure blue light.
    Type: Grant
    Filed: November 17, 2006
    Date of Patent: April 24, 2012
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Masakazu Funahashi, Chishio Hosokawa
  • AROMATIC AMINE DERIVATIVE AND ORGANIC ELECTROLUMINESCENT ELEMENT COMPRISING THE SAME
    Publication number: 20120043533
    Abstract: An aromatic amine derivative represented by the following formula (1): wherein A1 is a substituted or unsubstituted alkyl group, a substituted or unsubstituted aromatic group, a substituted or unsubstituted heterocyclic group or an organic group represented by the following formula (2): wherein X1, X2 and X3 are independently a substituted or unsubstituted aromatic group or a substituted or unsubstituted heterocyclic group; X1 and X2 are linkage groups which are different from each other; and B1, B2 and B3 are independently a substituted or unsubstituted aromatic group or a substituted or unsubstituted heterocyclic group.
    Type: Application
    Filed: April 22, 2010
    Publication date: February 23, 2012
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Yumiko Mizuki, Masakazu Funahashi
  • AROMATIC AMINE DERIVATIVE AND ORGANIC ELECTROLUMINESCENCE DEVICE USING THE SAME
    Publication number: 20110278561
    Abstract: To attain an organic electroluminescence device having a long lifetime and high luminous efficiency, and is capable of emitting blue light having a high color purity, and an aromatic amine derivative for realizing the device, the present invention provides an aromatic amine derivative having a specific structure, and an organic electroluminescence device including an organic thin film layer composed of one or more layers including at least a light emitting layer and interposed between a cathode and an anode, in which at least one layer of the organic thin film layer contains the aromatic amine derivative alone or as a component of a mixture.
    Type: Application
    Filed: July 25, 2011
    Publication date: November 17, 2011
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Chishio HOSOKAWA, Yoriyuki Takashima, Masakazu Funahashi
  • Aromatic amine derivative and organic electroluminescence device using the same
    Patent number: 8058478
    Abstract: A aromatic amine derivative having an specific structure having a diphenyl amino group, and two or more of substituent bonding to benzene ring thereof, and in an organic electroluminescence device which comprises at least one organic thin film layer comprising a light emitting layer sandwiched between a pair of electrode consisting of an anode and a cathode, at least one of the organic thin film layer comprises the aromatic amine derivative singly or a component for a mixture thereof. The organic electroluminescence device exhibiting a long lifetime and high current efficiency as well as emitting blue light with high color purity, and also the aromatic amine derivative for realizing the organic EL device are provided.
    Type: Grant
    Filed: August 11, 2010
    Date of Patent: November 15, 2011
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Masakazu Funahashi, Mineyuki Kubota
  • Aromatic amine derivative and organic electroluminescence device using the same
    Patent number: 8022253
    Abstract: To attain an organic electroluminescence device having a long lifetime and high luminous efficiency, and is capable of emitting blue light having a high color purity, and an aromatic amine derivative for realizing the device, the present invention provides an aromatic amine derivative having a specific structure, and an organic electroluminescence device including an organic thin film layer composed of one or more layers including at least a light emitting layer and interposed between a cathode and an anode, in which at least one layer of the organic thin film layer contains the aromatic amine derivative alone or as a component of a mixture.
    Type: Grant
    Filed: April 18, 2007
    Date of Patent: September 20, 2011
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Chishio Hosokawa, Yoriyuki Takashima, Masakazu Funahashi
  • DIAMINOPYRENE DERIVATIVE AND ORGANIC EL DEVICE USING THE SAME
    Publication number: 20110193064
    Abstract: An organic EL device includes an emitting layer provided between an anode and a cathode. The emitting layer contains a diaminopyrene derivative represented by the following formula (1) as an emitting material for the organic EL device. The diaminopyrene derivative emits light with electrical energy. In the formula, X and X? each independently represent a substituent containing at least one of Ge, P, B and Si. d and e each represent an integer of 0 to 5 while d+e?1 is satisfied. When d is 2 or more, the plurality of X may be mutually the same or different and may be bonded together to form a saturated or unsaturated ring. When e is 2 or more, the plurality of X? may be mutually the same or different and may be bonded together to form a saturated or unsaturated ring.
    Type: Application
    Filed: May 7, 2008
    Publication date: August 11, 2011
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventor: Masakazu Funahashi
  • Anthrylarylene derivative, material for organic electroluminescence device and organic electroluminescence device using same
    Patent number: 7985491
    Abstract: An anthrylarylene derivative having a specific structure and an organic electroluminescence device comprising an organic thin film layer which comprises at least one layer comprising at least a light emitting layer and is disposed between a cathode and an anode, wherein at least one layer in the organic thin film layer comprises the anthrylarylene derivative singly or as a component of a mixture. The device exhibits a great efficiency of light emission and has a long life. The anthrylarylene derivative has a sufficient glass transition temperature and is greatly advantageous as the light emitting material used in the above organic electroluminescence device.
    Type: Grant
    Filed: March 28, 2006
    Date of Patent: July 26, 2011
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Mineyuki Kubota, Masakazu Funahashi, Chishio Hosokawa
  • ORGANIC ELECTROLUMESCENCE DEVICE
    Publication number: 20110175521
    Abstract: Materials for organic electroluminescence devices are represented by following general formula [1]: wherein A represents a chrysene group, X1 to X4 each independently represent a substituted or unsubstituted arylene group having 6 to 30 carbon atoms, X1 and X2 may be bonded to each other, X3 and X4 may be bonded to each other, Y1 to Y4 each independently represent an organic group represented by general formula [2], a to d each represent an integer of 0 to 2 and, a+b+c+d?0; general formula [2] being: wherein R1 to R4 each independently represent hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 20 carbon atoms, cyano group or form a triple bond by a linkage of R1 and R2 or R3 and R4, Z represents a substituted or unsubstituted aryl group having 6 to 20 carbon atoms and n represents 0 or 1.
    Type: Application
    Filed: April 4, 2011
    Publication date: July 21, 2011
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Chishio Hosokawa, Masakazu Funahashi, Hisayuki Kawamura, Hiromasa Arai, Hidetoshi Koga, Hidetsugu Ikeda
  • Aromatic amine derivative and organic electroluminescence device using the same
    Patent number: 7981523
    Abstract: To provide an organic electroluminescence device having high emission luminance, high heat resistance, excellent high-temperature storage stability, and a long lifetime, and an aromatic amine derivative for realizing the device. Provided are a novel aromatic amine derivative having a specific structure and an organic electroluminescence device including: a cathode; an anode; and one or multiple organic thin film layers including at least a light-emitting layer, the one or multiple organic thin film layers being interposed between the cathode and the anode, in which at least one layer of the one or multiple organic thin film layers contains the aromatic amine compound alone or as a component of a mixture.
    Type: Grant
    Filed: March 20, 2006
    Date of Patent: July 19, 2011
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Chishio Hosokawa, Masahiro Kawamura, Masakazu Funahashi
  • ORGANIC LIGHT-EMITTING MEDIUM AND ORGANIC EL ELEMENT
    Publication number: 20110156016
    Abstract: An organic light-emitting medium including a diaminopyrene derivative represented by the following formula (1) and an anthracene derivative represented by the following formula (2);
    Type: Application
    Filed: July 27, 2009
    Publication date: June 30, 2011
    Inventors: Masahiro Kawamura, Masakazu Funahashi, Mitsunori Ito, Yumiko Mizuki
  • Organic electroluminescence device and organic light emitting medium
    Patent number: 7927716
    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: August 22, 2005
    Date of Patent: April 19, 2011
    Assignee: Idemitsu Kosan, Co., Ltd.
    Inventors: Masahide Matsuura, Masakazu Funahashi, Kenichi Fukuoka, Chishio Hosokawa
  • Novel aromatic compound and organic electroluminescent element containing the same
    Publication number: 20110049482
    Abstract: A novel aromatic compound having an anthracene skeleton structure and an asymmetric molecular structure; and an organic electroluminescence device which comprises a cathode, an anode and an organic thin film layer comprising at least one layer containing a light emitting layer and sandwiched between the cathode and the anode in which at least one layer in the organic thin film layer contains the above novel aromatic compound singly or as a component of a mixture. The organic electroluminescence device exhibits a great luminance of emitted light, a great efficiency of light emission and a high purity of color, emits bluish light, is excellent in stability at high temperatures and has a long life. The organic electroluminescence device can be provided by utilizing the novel aromatic compound.
    Type: Application
    Filed: August 9, 2010
    Publication date: March 3, 2011
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Hidetsugu Ikeda, Masahide Matsuura, Masakazu Funahashi, Chishio Hosokawa
  • ORGANIC LUMINESCENT MEDIUM AND ORGANIC EL DEVICE
    Publication number: 20110042660
    Abstract: Provided is an organic luminescent medium containing a specific diaminopyrene derivative and a specific anthracene derivative. Also provided are an organic electroluminescence device capable of emitting light having a short wavelength (such as blue light) with high luminous efficiency and having a long lifetime by having such constitution that the organic EL device contains one or more organic thin film layers including a light emitting layer between a cathode and an anode, and at least one layer of the organic thin film layers contains the organic luminescent medium, and an organic luminescent medium that can be used in an organic thin film layer of the organic EL device.
    Type: Application
    Filed: February 16, 2009
    Publication date: February 24, 2011
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Masahiro Kawamura, Masakazu Funahashi, Mitsunori Ito
  • ORGANIC ELECTROLUMINESCENCE DEVICE AND ANTHRACENE DERIVATIVE
    Publication number: 20110034744
    Abstract: An anthracene derivative having a specific asymmetric structure is provided. The asymmetric anthracenes are useful in an organic electroluminescence device and exhibit efficient light emission and a long performance lifetime.
    Type: Application
    Filed: October 12, 2010
    Publication date: February 10, 2011
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Hidetsugu IKEDA, Motohisa Ido, Masakazu Funahashi
  • AROMATIC AMINE DERIVATIVE AND ORGANIC ELECTROLUMINESCENCE DEVICE USING THE SAME
    Publication number: 20110034733
    Abstract: A aromatic amine derivative having an specific structure having a diphenyl amino group, and two or more of substituent bonding to benzene ring thereof, and in an organic electroluminescence device which comprises at least one organic thin film layer comprising a light emitting layer sandwiched between a pair of electrode consisting of an anode and a cathode, at least one of the organic thin film layer comprises the aromatic amine derivative singly or a component for a mixture thereof. The organic electroluminescence device exhibiting a long lifetime and high current efficiency as well as emitting blue light with high color purity, and also the aromatic amine derivative for realizing the organic EL device are provided.
    Type: Application
    Filed: August 11, 2010
    Publication date: February 10, 2011
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Masakazu FUNAHASHI, Mineyuki Kubota
  • AROMATIC DIAMINE DERIVATIVE AND ORGANIC ELECTROLUMINESCENT DEVICE USING THE SAME
    Publication number: 20110006289
    Abstract: Disclosed is an aromatic diamine derivative represented by the following general formula (I), which has a chrysene structure in which a phenyl group having a substituted or unsubstituted silyl group is a substituent for an amino group. Also disclosed is an organic electroluminescence device including an organic thin film layer formed of one or more layers including at least a light emitting layer and interposed between a cathode and an anode, in which at least one layer of the organic thin film layer contains the aromatic diamine derivative by itself or as a component of a mixture, the device having a long lifetime and high luminous efficiency.
    Type: Application
    Filed: December 25, 2008
    Publication date: January 13, 2011
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Yumiko Mizuki, Masakazu Funahashi, Masahiro Kawamura, Mitsunori Ito
  • AROMATIC AMINE DERIVATIVE AND ORGANIC ELECTROLUMINESCENT DEVICE USING THE SAME
    Publication number: 20100314615
    Abstract: Provided are: an aromatic amine derivative in which a terminal substituent such as a dibenzofuran ring or a dibenzothiophene ring is bonded to a nitrogen atom directly or through an arylene group or the like; an organic electroluminescence device including an organic thin film layer formed of one or more layers including a light emitting layer and interposed between a cathode and an anode in which a layer of the organic thin film layer contains the aromatic amine derivative by itself or as a component of a mixture, and the device has a long lifetime and high luminous efficiency; and an aromatic amine derivative for realizing the device.
    Type: Application
    Filed: December 22, 2008
    Publication date: December 16, 2010
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Yumiko Mizuki, Masakazu Funahashi, Mitsunori Ito, Masahiro Kawamura