Patents by Inventor Masahide Matsuura
Masahide Matsuura 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).
-
Patent number: 7927716Abstract: 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: GrantFiled: August 22, 2005Date of Patent: April 19, 2011Assignee: Idemitsu Kosan, Co., Ltd.Inventors: Masahide Matsuura, Masakazu Funahashi, Kenichi Fukuoka, Chishio Hosokawa
-
Patent number: 7906226Abstract: An organic EL device 100 including a plurality of emitting layers (15) and (17) between a cathode (18) and (19) and an anode (12), each of the emitting layers (15) and (17) made of a host material having a triplet energy gap of 2.52 eV or more and 3.7 eV or less, and a dopant having a light emitting property related to a triplet state, the dopant containing a metal complex with a heavy metal.Type: GrantFiled: February 8, 2005Date of Patent: March 15, 2011Assignee: Idemitsu Kosan Co., Ltd.Inventors: Masahide Matsuura, Chishio Hosokawa, Toshihiro Iwakuma, Keiko Yamamichi
-
Publication number: 20110049482Abstract: 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: ApplicationFiled: August 9, 2010Publication date: March 3, 2011Applicant: Idemitsu Kosan Co., Ltd.Inventors: Hidetsugu Ikeda, Masahide Matsuura, Masakazu Funahashi, Chishio Hosokawa
-
Patent number: 7888865Abstract: An organic electroluminescent device including at least an anode, a first emitting layer, a hole barrier layer, a second emitting layer and a cathode in this order. The first emitting layer and the second emitting layer both include a hole transporting material. The organic EL device is small in chromaticity change and has high efficiency.Type: GrantFiled: February 15, 2005Date of Patent: February 15, 2011Assignee: Idemitsu Kosan Co., Ltd.Inventors: Toshihiro Iwakuma, Masahide Matsuura, Hiroshi Yamamoto, Hisayuki Kawamura, Chishio Hosokawa
-
Patent number: 7867629Abstract: A specific derivative of heterocyclic compound having nitrogen atom and an organic electroluminescence device comprising the compound. An organic electroluminescence device comprising at least one of organic compound layers including a light emitting layer sandwiched between an anode and a cathode, wherein said at least one of the organic compound layers comprises the derivative of the heterocyclic compound having nitrogen atom as a sole component or as mixed component. The organic electroluminescence device achieves elevation of luminance and excellent efficiency of light emission, and also achieves long lifetime by an improvement of an electrode adhesion.Type: GrantFiled: September 26, 2003Date of Patent: January 11, 2011Assignee: Idemitsu Kosan Co., Ltd.Inventors: Hiroshi Yamamoto, Masahide Matsuura, Hidetsugu Ikeda, Mineyuki Kubota, Masahiro Kawamura
-
Patent number: 7851071Abstract: A novel derivative of heterocyclic compound having nitrogen atom with a structure made by bonding special groups to benzimidazole, a material for an organic electroluminescence (EL) device comprising the derivative of heterocyclic compound having nitrogen atom and an organic electroluminescence device comprising at least one organic compound layer containing a light emitting layer sandwiched between a pair of electrodes, wherein the device contains the derivative of heterocyclic compound having nitrogen atom. An organic EL device achieving elevation of luminance and of efficiency in light emission even under low driving voltage is obtainable by an employment of the derivative of heterocyclic compound having nitrogen atom for at least one layer composing organic compound layers of the EL device.Type: GrantFiled: January 27, 2004Date of Patent: December 14, 2010Assignee: Idemitsu Kosan Co., Ltd.Inventors: Hiroshi Yamamoto, Masahide Matsuura, Mineyuki Kubota, Masahiro Kawamura
-
Patent number: 7846560Abstract: A material for organic electroluminescence devices comprising a compound having a specific structure and an organic electroluminescence device comprising an organic thin film layer which comprises one layer or a plurality of layers comprising at least a light emitting layer and disposed between a cathode and an anode, wherein at least one layer in the organic thin film layer comprises the material for organic electroluminescence devices, are provided. The material provides the organic electroluminescence device exhibiting a great efficiency of light emission, having no defect pixels, exhibiting excellent heat resistance and having a long life.Type: GrantFiled: December 8, 2009Date of Patent: December 7, 2010Assignee: Idemitsu Kosan Co., Ltd.Inventors: Yuki Nakano, Masahide Matsuura, Hidetsugu Ikeda, Toshihiro Iwakuma
-
Publication number: 20100277061Abstract: 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: ApplicationFiled: May 4, 2010Publication date: November 4, 2010Applicant: Idemitsu Kosan Co., Ltd.Inventors: Masahide MATSUURA, Masakazu FUNAHASHI, Kenichi FUKUOKA, Chishio HOSOKAWA
-
Publication number: 20100270913Abstract: 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: ApplicationFiled: March 26, 2010Publication date: October 28, 2010Applicant: Idemitsu Kosan Co., Ltd.Inventors: Masahide MATSUURA, Masakazu Funahashi, Kenichi Fukuoka, Chishio Hosokawa
-
Patent number: 7790892Abstract: 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: GrantFiled: April 17, 2003Date of Patent: September 7, 2010Assignee: Idemitsu Kosan Co., Ltd.Inventors: Hidetsugu Ikeda, Masahide Matsuura, Masakazu Funahashi, Chishio Hosokawa
-
Publication number: 20100219397Abstract: Disclosed is a transition metal complex compound having a specific structure including a crosslinked stricture. Further, disclosed is an organic electroluminescence device including an organic thin film formed of one or more layers including at least a light-emitting layer, the organic thin film layer being interposed between a pair of electrodes. In this organic electroluminescence device, at least one layer of the organic thin film contains the transition metal complex compound and has high luminous efficiency and emits blue light. In addition, disclosed is the transition metal complex compound enables to realize the organic electroluminescence device.Type: ApplicationFiled: July 31, 2006Publication date: September 2, 2010Applicant: Idemitsu Kosan Co., Ltd.Inventors: Masami Watanabe, Masahide Matsuura, Hideaki Nagashima
-
Publication number: 20100193773Abstract: A novel derivative of heterocyclic compound having nitrogen atom with a structure made by bonding special groups to benzimidazole, a material for an organic electroluminescence (EL) device comprising the derivative of heterocyclic compound having nitrogen atom and an organic electroluminescence device comprising at least one organic compound layer containing a light emitting layer sandwiched between a pair of electrodes, wherein the device contains the derivative of heterocyclic compound having nitrogen atom. An organic EL device achieving elevation of luminance and of efficiency in light emission even under low driving voltage is obtainable by an employment of the derivative of heterocyclic compound having nitrogen atom for at least one layer composing organic compound layers of the EL device.Type: ApplicationFiled: April 7, 2010Publication date: August 5, 2010Applicant: Idemitsu Kosan Co., Ltd,Inventors: Hiroshi Yamamoto, Masahide Matsuura, Mineyuki Kubota, Masahiro Kawamura
-
Patent number: 7745016Abstract: An organic electroluminescence device emitting white light which comprises at least two light emitting layers and an electron transporting layer comprising a heterocyclic derivative having nitrogen atom or silicon atom which are disposed between a pair of electrodes, wherein the energy gap of a host compound in each light emitting layer is in a specific range, the energy gap of the heterocyclic derivative having nitrogen atom or silicon atom in the electron transporting layer is in a specific range, and the ionization potential of the heterocyclic derivative having nitrogen atom or silicon atom in the electron transporting layer and the ionization potential of the host compound in the light emitting layer adjacent to the electron transporting layer satisfy a specific relation. The organic electroluminescence device provides a great efficiency of light emission under a low voltage and has a long lifetime, and exhibits no change in the chromaticity.Type: GrantFiled: June 24, 2004Date of Patent: June 29, 2010Assignee: Idemitsu Kosan Co., Ltd.Inventors: Masahide Matsuura, Kenichi Fukuoka, Hiroshi Yamamoto, Chishio Hosokawa
-
Publication number: 20100141129Abstract: An organic electroluminescence element comprising: an anode; a first emitting layer comprising at least a first host material and a first dopant; a second emitting layer comprising at least a second host material and a second dopant; and a cathode in the order mentioned: wherein the energy gap Egh1 of the first host material, the energy gap Egd1 of the first dopant, the energy gap Egh2 of the second host material, and the energy gap Egd2 of the second dopant satisfy the following formulas; and the luminescent intensity I1 at the maximum luminescent wavelength of an emission spectrum derived from the first emitting layer, and the luminescent intensity I2 at the maximum luminescent wavelength of an emission spectrum derived from the second emitting layer satisfy the following formula: Egh1>Egd1 Egh2>Egd2 Egd1>Egd2 I1>3.5×I2.Type: ApplicationFiled: January 11, 2010Publication date: June 10, 2010Inventors: Kenichi Fukuoka, Masahide Matsuura, Hiroshi Yamamoto, Chishio Hosokawa
-
Patent number: 7732063Abstract: 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: GrantFiled: June 12, 2007Date of Patent: June 8, 2010Assignee: Idemitsu Kosan, Co., Ltd.Inventors: Masahide Matsuura, Masakazu Funahashi, Kenichi Fukuoka, Chishio Hosokawa
-
Publication number: 20100109001Abstract: In an organic electroluminescence device having a pair of electrodes and an organic medium which has a light emitting layer or a plurality of layers including the light emitting layer, contains a light emitting material formed with an organometallic complex compound having a heavy metal and is disposed between the pair of electrodes, the organic medium contains an amine derivative having a specific structure. The organic electroluminescence device exhibits a high efficiency of light emission even at a high luminance of several thousand cd/m2 or greater and a small consumption of electricity.Type: ApplicationFiled: January 7, 2010Publication date: May 6, 2010Applicant: Idemitsu Kosan Co., Ltd.Inventors: MASAHIDE MATSUURA, CHISHIO HOSOKAWA
-
Publication number: 20100084971Abstract: A material for organic electroluminescence devices comprising a compound having a specific structure and an organic electroluminescence device comprising an organic thin film layer which comprises one layer or a plurality of layers comprising at least a light emitting layer and disposed between a cathode and an anode, wherein at least one layer in the organic thin film layer comprises the material for organic electroluminescence devices, are provided. The material provides the organic electroluminescence device exhibiting a great efficiency of light emission, having no defect pixels, exhibiting excellent heat resistance and having a long life.Type: ApplicationFiled: December 8, 2009Publication date: April 8, 2010Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Yuki NAKANO, Masahide Matsuura, Hidetsugu Ikeda, Toshihiro Iwakuma
-
Patent number: 7663304Abstract: An organic electroluminescence element comprising: an anode; a first emitting layer comprising at least a first host material and a first dopant; a second emitting layer comprising at least a second host material and a second dopant; and a cathode in the order mentioned: wherein the energy gap Egh1 of the first host material, the energy gap Egd1 of the first dopant, the energy gap Egh2 of the second host material, and the energy gap Egd2 of the second dopant satisfy the following formulas; and the luminescent intensity I1 at the maximum luminescent wavelength of an emission spectrum derived from the first emitting layer, and the luminescent intensity I2 at the maximum luminescent wavelength of an emission spectrum derived from the second emitting layer satisfy the following formula: Egh1>Egd1 Egh2>Egd2 Egd1>Egd2 I1>3.5×I2.Type: GrantFiled: November 13, 2003Date of Patent: February 16, 2010Assignee: Idemitsu Kosan Co., Ltd.Inventors: Kenichi Fukuoka, Masahide Matsuura, Hiroshi Yamamoto, Chishio Hosokawa
-
Patent number: 7651791Abstract: A material for organic electroluminescence devices comprising a compound having a specific structure and an organic electroluminescence device comprising an organic thin film layer which comprises one layer or a plurality of layers comprising at least a light emitting layer and disposed between a cathode and an anode, wherein at least one layer in the organic thin film layer comprises the material for organic electroluminescence devices, are provided. The material provides the organic electroluminescence device exhibiting a great efficiency of light emission, having no defect pixels, exhibiting excellent heat resistance and having a long life.Type: GrantFiled: December 15, 2005Date of Patent: January 26, 2010Assignee: Idemitsu Kosan Co., Ltd.Inventors: Yuki Nakano, Masahide Matsuura, Hidetsugu Ikeda, Toshihiro Iwakuma
-
Patent number: 7651786Abstract: 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: GrantFiled: July 11, 2003Date of Patent: January 26, 2010Assignee: Idemitsu Kosan, Co., Ltd.Inventors: Masahide Matsuura, Masakazu Funahashi, Kenichi Fukuoka, Chishio Hosokawa