Patents by Inventor Yoichi Osato
Yoichi Osato 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).
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Patent number: 7902739Abstract: An object of the present invention is to maintain sufficient light extraction from an organic light emitting device and reduce reflection of external light. There are arranged a polarizing member, a prism member, a phase member, and an organic light emitting element which has an organic light emitting layer arranged between a pair of electrodes, in mentioned order from the side of a light extraction surface. When the prism member includes two sheets, the vertex angle of the prism member sheet arranged on the side of the organic light emitting element is preferably a vertex or less of the prism member arranged on the side of the light extraction surface. Furthermore, the prism members are preferably arranged so that pitch directions thereof are orthogonal to each other.Type: GrantFiled: March 26, 2007Date of Patent: March 8, 2011Assignee: Canon Kabushiki KaishaInventors: Yoichi Osato, Hiroyuki Kitayama
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Patent number: 7834542Abstract: There is provided an organic light-emitting apparatus in which the luminance can be improved, and, at the same time, the reflection of ambient light can be reduced by adding a prism member and a light-absorbing member to a spontaneous light-emitting device such as an organic light-emitting device, and which includes: a plurality of organic light-emitting devices each having a pair of electrodes and an organic compound layer formed between the pair of electrodes; a prism member disposed on a light extraction side of the organic light-emitting device, an interface on the light extraction side of the prism member being an interface with air; and a light-absorbing member formed between the plurality of organic light-emitting devices, around the prism member, and on a side portion of a protrusion of the prism member.Type: GrantFiled: August 30, 2007Date of Patent: November 16, 2010Assignee: Canon Kabushiki KaishaInventors: Hiroyuki Kitayama, Yoichi Osato
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Patent number: 7683533Abstract: An organic EL light-emitting apparatus includes a base, an organic EL device, a prism member, a polarizing member, and a phase member. The prism member, the polarizing member, and the phase member are adjacent to a light extraction side of the organic EL device. The prism member includes a plurality of unit prisms each having a triangular-column shape. The unit prisms are arranged such that their longitudinal directions are parallel to one another. The polarizing member is disposed further from the base than the prism member. The prism member has an apex angle between 90° to 140°.Type: GrantFiled: March 7, 2007Date of Patent: March 23, 2010Assignee: Canon Kabushiki KaishaInventors: Hiroyuki Kitayama, Yoichi Osato
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Publication number: 20080074859Abstract: There is provided an organic light-emitting apparatus in which the luminance can be improved, and, at the same time, the reflection of ambient light can be reduced by adding a prism member and a light-absorbing member to a spontaneous light-emitting device such as an organic light-emitting device, and which includes: a plurality of organic light-emitting devices each having a pair of electrodes and an organic compound layer formed between the pair of electrodes; a prism member disposed on a light extraction side of the organic light-emitting device, an interface on the light extraction side of the prism member being an interface with air; and a light-absorbing member formed between the plurality of organic light-emitting devices, around the prism member, and on a side portion of a protrusion of the prism member.Type: ApplicationFiled: August 30, 2007Publication date: March 27, 2008Applicant: CANON KABUSHIKI KAISHAInventors: Hiroyuki Kitayama, Yoichi Osato
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Patent number: 7309619Abstract: The present invention provides an light-emitting element in which an organic compound layer containing a carbonate, for example Cs2CO3 and Li2CO3, as a dopant is in substantially electrical contact with a cathode by providing an organic compound layer having a dopant easy in handling so as to bring the organic compound layer into contact with the cathode. The light-emitting element includes a pair of electrodes sandwiching the organic compound layer, which is a co-evaporation layer of an organic compound and the carbonate.Type: GrantFiled: October 26, 2006Date of Patent: December 18, 2007Assignee: Canon Kabushiki KaishaInventors: Toshinori Hasegawa, Yoichi Osato
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Publication number: 20070230158Abstract: An organic EL light-emitting apparatus includes a base, an organic EL device, a prism member, a polarizing member, and a phase member. The prism member, the polarizing member, and the phase member are adjacent to a light extraction side of the organic EL device. The prism member includes a plurality of unit prisms each having a triangular-column shape. The unit prisms are arranged such that their longitudinal directions are parallel to one another. The polarizing member is disposed further from the base than the prism member. The prism member has an apex angle between 90° to 140°.Type: ApplicationFiled: March 7, 2007Publication date: October 4, 2007Applicant: CANON KABUSHIKI KAISHAInventors: Hiroyuki Kitayama, Yoichi Osato
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Publication number: 20070230211Abstract: An object of the present invention is to maintain sufficient light extraction from an organic light emitting device and reduce reflection of external light. There are arranged a polarizing member, a prism member, a phase member, and an organic light emitting element which has an organic light emitting layer arranged between a pair of electrodes, in mentioned order from the side of a light extraction surface. When the prism member includes two sheets, the vertex angle of the prism member sheet arranged on the side of the organic light emitting element is preferably a vertex or less of the prism member arranged on the side of the light extraction surface. Furthermore, the prism members are preferably arranged so that pitch directions thereof are orthogonal to each other.Type: ApplicationFiled: March 26, 2007Publication date: October 4, 2007Applicant: CANON KABUSHIKI KAISHAInventors: Yoichi Osato, Hiroyuki Kitayama
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Publication number: 20070159093Abstract: A light emitting apparatus which can protect a light emitting device from external stress, etc. The light emitting apparatus includes a light emitting device, a housing, and a protective plate. A filler is disposed in a space between the light emitting device and the protective plate.Type: ApplicationFiled: December 13, 2006Publication date: July 12, 2007Applicant: CANON KABUSHIKI KAISHAInventors: Osamu Yuki, Hideo Mori, Ryuichiro Isobe, Yoichi Osato, Hiroyuki Kitayama, Toshinori Hasegawa
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Publication number: 20070042517Abstract: The present invention provides an light-emitting element in which an organic compound layer containing a carbonate, for example Cs2CO3 and Li2CO3, as a dopant is in substantially electrical contact with a cathode by providing an organic compound layer having a dopant easy in handling so as to bring the organic compound layer into contact with the cathode. The light-emitting element includes a pair of electrodes sandwiching the organic compound layer, which is a co-evaporation layer of an organic compound and the carbonate.Type: ApplicationFiled: October 26, 2006Publication date: February 22, 2007Applicant: CANON KABUSHIKI KAISHAInventors: Toshinori Haseqawa, Yoichi Osato
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Patent number: 7163831Abstract: The present invention provides an light-emitting element in which an organic compound layer containing a carbonate, for example Cs2CO3 and Li2CO3, as a dopant is in substantially electrical contact with a cathode by providing an organic compound layer having a dopant easy in handling so as to bring the organic compound layer into contact with the cathode. The light-emitting element includes a pair of electrodes sandwiching the organic compound layer, which is a co-evaporation layer of an organic compound and the carbonate.Type: GrantFiled: November 19, 2002Date of Patent: January 16, 2007Assignee: Canon Kabushiki KaishaInventors: Toshinori Hasegawa, Yoichi Osato
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Patent number: 6998182Abstract: In an organic luminescence device formed of one or plural layers of organic films between an anode and a cathode, at least one layer is any one of a luminescence layer, an electron injection layer and an electron-transporting layer and is formed of at least a phenolic derivative of any one of formulas (1-a), (1-b), (2-a) and (2-b) characterized by having at least two phenoxide portions connected to each other via a specific divalent bond in its molecular structure. By the use of the phenolic derivative, the resultant organic luminescence device produces a high-luminance fluorescent luminescence at a low voltage for a long period of time.Type: GrantFiled: March 12, 2003Date of Patent: February 14, 2006Assignee: Canon Kabushiki KaishaInventors: Akihito Saitoh, Yoichi Osato, Kazunori Ueno
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Publication number: 20040235209Abstract: The present invention provides an light-emitting element in which an organic compound layer (14) containing a carbonate, for example Cs2CO3 and Li2CO3, as a dopant, is in substantially electrical contact with a cathode (15).Type: ApplicationFiled: March 8, 2004Publication date: November 25, 2004Inventors: Toshinori Hasegawa, Yoichi Osato
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Publication number: 20030232216Abstract: In an organic luminescence device formed of one or plural layers of organic films between an anode and a cathode, at least one layer is any one of a luminescence layer, an electron injection layer and an electron-transporting layer and is formed of at least a phenolic derivative of any one of formulas (1-a), (1-b), (2-a) and (2-b) characterized by having at least two phenoxide portions connected to each other via a specific divalent bond in its molecular structure. By the use of the phenolic derivative, the resultant organic luminescence device produces a high-luminance fluorescent luminescence at a low voltage for a long period of time.Type: ApplicationFiled: March 12, 2003Publication date: December 18, 2003Applicant: CANON KABUSHIKI KAISHAInventors: Akihito Saitoh, Yoichi Osato, Kazunori Ueno
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Patent number: 6583557Abstract: An organic luminescent element includes a substrate, an anode, a cathode, at least one organic material layer interposed between the anode and the cathode, and a sealing film containing a ferroelectric material provided on the anode or the cathode on the organic material layer. Preferably, the organic luminescent element further includes a counter electrode provided on the sealing film. Preferably, the substrate is transparent, and the anode is composed of indium tin oxide.Type: GrantFiled: April 24, 2001Date of Patent: June 24, 2003Assignee: Canon Kabushiki KaishaInventors: Yuichi Hashimoto, Yoichi Osato, Koichi Suzuki, Akihiro Senoo, Hiroshi Tanabe, Kazunori Ueno, Seiji Mashimo, Shinichi Urakawa
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Publication number: 20030044518Abstract: An organic luminescence device capable of luminescence at a high efficiency, a high luminance and high durability is formed by a pair of electrodes comprising an anode and a cathode, and at least one organic layer disposed between the electrodes. The at least one organic layer includes at least one layer comprising a polymerized film of organic layer having at least two polymerizable double bonds.Type: ApplicationFiled: September 23, 2002Publication date: March 6, 2003Applicant: CANON KABUSHIKI KAISHAInventors: Akihiro Senoo, Tatsundo Kawai, Yoichi Osato, Yuichi Hashimoto, Koichi Suzuki, Hiroshi Tanabe, Kazunori Ueno, Seiji Mashimo
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Publication number: 20020045062Abstract: An organic luminescence device capable of luminescence at a high efficiency, a high luminance and high durability is formed by a pair of electrodes comprising an anode and a cathode, and at least one organic layer disposed between the electrodes. The at least one organic layer includes at least one layer comprising a polymerized film of organic layer having at least two polymerizable double bonds.Type: ApplicationFiled: April 11, 2001Publication date: April 18, 2002Inventors: Akihiro Senoo, Tatsundo Kawai, Yoichi Osato, Yuichi Hashimoto, Koichi Suzuki, Hiroshi Tanabe, Kazunori Ueno, Seiji Mashimo
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Patent number: 6342754Abstract: A charge-reducing film is used for coating a surface within a vacuum container containing electron-emitting devices to prevent deviations of electron beams caused by electric charges of the furface. The charge-reducing film comprises a nitrogen compound containing one or more than one transition metals and at least one element selected from aluminum, silicon and boron. An oxide layer may be arranged on the charge-reducing layer.Type: GrantFiled: December 29, 1997Date of Patent: January 29, 2002Assignee: Canon Kabushiki KaishaInventors: Kazuo Kuroda, Hiroshi Takagi, Yoichi Osato, Noriaki Ohguri, Yoshimasa Okamura, Takao Kusaka
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Publication number: 20010048272Abstract: An organic luminescent element includes a substrate, an anode, a cathode, at least one organic material layer interposed between the anode and the cathode, and a sealing film containing a ferroelectric material provided on the anode or the cathode on the organic material layer. Preferably, the organic luminescent element further includes a counter electrode provided on the sealing film. Preferably, the substrate is transparent, and the anode is composed of indium tin oxide.Type: ApplicationFiled: April 24, 2001Publication date: December 6, 2001Inventors: Yuichi Hashimoto, Yoichi Osato, Koichi Suzuki, Akihiro Senoo, Hiroshi Tanabe, Kazunori Ueno, Seiji Mashimo, Shinichi Urakawa
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Patent number: 6028824Abstract: A magnetooptical recording medium provided with a first magnetic layer and a second magnetic layer having a higher Curie point and a lower coercive force than the first magnetic layer and being exchange coupled with the first magnetic layer satisfies the relation: ##EQU1## wherein H.sub.H is the coercive force of the first magnetic layer; H.sub.L is the coercive force of the second magnetic layer; M.sub.s is the saturation magnetization of the second magnetic layer; h is the thickness thereof; and .sigma..sub.w is the magnetic wall energy between the first and second magnetic layers.Type: GrantFiled: May 18, 1998Date of Patent: February 22, 2000Assignee: Canon Kabushiki KaishaInventors: Yoichi Osato, Hisaaki Kawade, Eiichi Fujii, Nobuhiro Kasama, Tadashi Kobayashi
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Patent number: 5783300Abstract: A magnetooptical recording medium provided with a first magnetic layer and a second magnetic layer having a higher Curie point and a lower coercive force than the first magnetic layer and being exchange coupled with the first magnetic layer satisfies the relation: ##EQU1## wherein H.sub.H is the coercive force of the first magnetic layer; H.sub.L is the coercive force of the second magnetic layer; M.sub.s is the saturation magnetization of the second magnetic layer; h is the thickness thereof; and .sigma..sub.w is the magnetic wall energy between the first and second magnetic layers.Type: GrantFiled: February 29, 1996Date of Patent: July 21, 1998Assignee: Canon Kabushiki KaishaInventors: Yoichi Osato, Hisaaki Kawade, Eiichi Fujii, Nobuhiro Kasama, Tadashi Kobayashi