Patents by Inventor Akifumi Nakamura
Akifumi Nakamura 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: 10263192Abstract: An organic electroluminescent device including: an anode, a cathode, an emitting layer formed of an organic compound and interposed between the cathode and the anode, and two or more layers provided in a hole-injecting/hole-transporting region between the anode and the emitting layer; of the layers which are provided in the hole-injecting/hole-transporting region, a layer which is in contact with the emitting layer containing a compound represented by the formula (1); and of the layers which are provided in the hole-injecting/hole-transporting region, a layer which is interposed between the anode and the layer which is in contact with the emitting layer containing an amine derivative represented by the formula (2).Type: GrantFiled: June 21, 2007Date of Patent: April 16, 2019Assignees: IDEMITSU KOSAN CO., LTD., JOLED Inc.Inventors: Masahiro Kawamura, Emiko Kambe, Akifumi Nakamura, Yasunori Kijima, Tadahiko Yoshinaga, Shigeyuki Matsunami
-
Publication number: 20180221952Abstract: There is provided a more efficient method for manufacturing a three-dimensional shaped object. The method of the present invention comprises a successive formation of a plurality of solidified layers through a light beam irradiation, wherein the solidified layers are provided by a hybrid of combined systems of an after irradiation system and a simultaneous irradiation system, the after irradiation system being such that the light beam irradiation is performed after a formation of a powder layer, the simultaneous irradiation system being such that the light beam irradiation is performed while a raw material is supplied.Type: ApplicationFiled: July 28, 2016Publication date: August 9, 2018Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Norio YOSHIDA, Akifumi NAKAMURA, Satoshi ABE, Masanori MORIMOTO, Yoshiyuki UCHINONO
-
Publication number: 20180214948Abstract: In order to provide a manufacturing method of the three-dimensional shaped object having a more proper heat property to be used as a metal mold, there is provided a method for manufacturing a three-dimensional shaped object by alternate repetition of a powder-layer forming and a solidified-layer forming, the repetition comprising: (i) forming a solidified layer by irradiating a predetermined portion of a powder layer with a light beam, thereby allowing a sintering of the powder in the predetermined portion or a melting and subsequent solidification of the powder; and (ii) forming another solidified layer by forming a new powder layer on the formed solidified layer, followed by irradiation of a predetermined portion of the newly formed powder layer with the light beam, wherein the three-dimensional shaped object is manufactured such that it has a heat source element in the three-dimensional shaped object, and also has a surface in a form of a concavity-convexity, and wherein a main surface of the heat source eType: ApplicationFiled: February 8, 2016Publication date: August 2, 2018Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Masanori MORIMOTO, Satoshi ABE, Isao FUWA, Akifumi NAKAMURA
-
Publication number: 20180200795Abstract: In order to to provide a manufacturing method of a three-dimensional shaped object having a more proper heat removal property to be used as a metal mold, there is provided that a method for manufacturing a three-dimensional shaped object by alternate repetition of a powder-layer forming and a solidified-layer forming, the repetition comprising: (i) forming a solidified layer by irradiating a predetermined portion of a powder layer with a light beam, thereby allowing a sintering of the powder in the predetermined portion or a melting and subsequent solidification of the powder; and (ii) forming another solidified layer by forming a new powder layer on the formed solidified layer, followed by irradiation of a predetermined portion of the newly formed powder layer with the light beam, wherein the manufacturing method of the present invention, the three-dimensional shaped object is manufactured such that it has a flow path for cooling media in the three-dimensional shaped object, and also has a surface in a formType: ApplicationFiled: February 8, 2016Publication date: July 19, 2018Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Masanori MORIMOTO, Satoshi ABE, Akifumi NAKAMURA, Isao FUWA
-
Patent number: 9960360Abstract: An organic electroluminescent device including: an anode, a cathode, an emitting layer formed of an organic compound and interposed between the cathode and the anode, and two or more layers provided in a hole-injecting/hole-transporting region between the anode and the emitting layer; of the layers which are provided in the hole-injecting/hole-transporting region, a layer which is in contact with the emitting layer containing a compound represented by the formula (1); and of the layers which are provided in the hole-injecting/hole-transporting region, a layer which is interposed between the anode and the layer which is in contact with the emitting layer containing an amine derivative represented by the formula (2).Type: GrantFiled: September 30, 2015Date of Patent: May 1, 2018Assignees: IDEMITSU KOSAN CO., LTD., JOLED INC.Inventors: Masahiro Kawamura, Emiko Kambe, Akifumi Nakamura, Yasunori Kijima, Tadahiko Yoshinaga, Shigeyuki Matsunami
-
Publication number: 20180090685Abstract: An organic electroluminescent device including: an anode, a cathode, an emitting layer formed of an organic compound and interposed between the cathode and the anode, and two or more layers provided in a hole-injecting/hole-transporting region between the anode and the emitting layer; of the layers which are provided in the hole-injecting/hole-transporting region, a layer which is in contact with the emitting layer containing a compound represented by the formula (1); and of the layers which are provided in the hole-injecting/hole-transporting region, a layer which is interposed between the anode and the layer which is in contact with the emitting layer containing an amine derivative represented by the formula (2).Type: ApplicationFiled: December 1, 2017Publication date: March 29, 2018Applicants: Idemitsu Kosan Co., Ltd., JOLED Inc.Inventors: Masahiro Kawamura, Emiko Kambe, Akifumi Nakamura, Yasunori Kijima, Tadahiko Yoshinaga, Shigeyuki Matsunami
-
Publication number: 20180040828Abstract: An organic electroluminescent device including: an anode, a cathode, an emitting layer formed of an organic compound and interposed between the cathode and the anode, and two or more layers provided in a hole-injecting/hole-transporting region between the anode and the emitting layer; of the layers which are provided in the hole-injecting/hole-transporting region, a layer which is in contact with the emitting layer containing a compound represented by the formula (1); and of the layers which are provided in the hole-injecting/hole-transporting region, a layer which is interposed between the anode and the layer which is in contact with the emitting layer containing an amine derivative represented by the formula (2).Type: ApplicationFiled: October 4, 2017Publication date: February 8, 2018Applicants: Idemitsu Kosan Co., Ltd., JOLED Inc.Inventors: Masahiro KAWAMURA, Emiko Kambe, Akifumi Nakamura, Yasunori Kijima, Tadahiko Yoshinaga, Shigeyuki Matsunami
-
Patent number: 9685594Abstract: An LED module includes a submount having a face in a thickness direction thereof, an LED chip bonded to the face of the submount with a first bond, and a patterned wiring circuit electrically connected to the LED chip. The first bond transmits light emitted from the LED chip. The submount is a light-transmissive member having light diffusing properties, and a planar size larger than a planar size of the LED chip. The patterned wiring circuit is provided on the face of the submount so as not to overlap the LED chip. The submount is constituted by a plurality of light-transmissive layers which are stacked in the thickness direction and have different optical properties so that a light-transmissive layer of the plurality of light-transmissive layers which is farther from the LED chip is higher in reflectance in a wavelength range of the light emitted from the LED chip.Type: GrantFiled: May 24, 2013Date of Patent: June 20, 2017Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Yoji Urano, Kenichiro Tanaka, Akifumi Nakamura, Toru Hirano, Hideaki Hyuga, Masanori Suzuki, Teruhisa Yokota
-
Patent number: 9680075Abstract: A light-emitting device in accordance with the present invention includes a mounting substrate; an LED chip bonded to a surface of the mounting substrate with a bond; and an encapsulating portion covering the LED chip. The bond transmits light from the LED chip. The mounting substrate includes: a light-transmissive member having a planar size larger than that of the LED chip; and first and second penetrating wirings which penetrate the light-transmissive member in the thickness direction thereof and are electrically connected to first and second electrodes of the LED chip via first and second wires, respectively. The light-transmissive member includes at least two light-transmissive layers with different optical properties which are stacked in the thickness direction. A light-transmissive layer of the light-transmissive layers which is farther from the LED chip is higher in reflectance to the light.Type: GrantFiled: August 30, 2013Date of Patent: June 13, 2017Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Yoji Urano, Akifumi Nakamura, Hayato Ioka, Toru Hirano, Masanori Suzuki, Hideaki Hyuga, Ryoji Imai, Jun Goda
-
Patent number: 9437581Abstract: The LED module includes: a light diffusing substrate having light transmissive properties; an LED chip bonded to a first surface of the light diffusing substrate with a transparent first bond in between; a color converter facing the first surface to cover the LED chip; and a mounting substrate. The color converter is made of transparent material containing phosphor which, when excited by light emitted from the LED chip, emits light having a different color from the LED chip. The mounting substrate includes a diffuse reflection layer diffusely reflecting light emitted from the LED chip and light emitted from the phosphor. The diffuse reflection layer is placed facing a second surface of the light diffusing substrate.Type: GrantFiled: May 24, 2013Date of Patent: September 6, 2016Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Yoji Urano, Akifumi Nakamura, Hayato Ioka, Ryoji Imai, Jun Goda, Toru Hirano, Masanori Suzuki, Hideaki Hyuga
-
Publication number: 20160020403Abstract: An organic electroluminescent device including: an anode, a cathode, an emitting layer formed of an organic compound and interposed between the cathode and the anode, and two or more layers provided in a hole-injecting/hole-transporting region between the anode and the emitting layer; of the layers which are provided in the hole-injecting/hole-transporting region, a layer which is in contact with the emitting layer containing a compound represented by the formula (1); and of the layers which are provided in the hole-injecting/hole-transporting region, a layer which is interposed between the anode and the layer which is in contact with the emitting layer containing an amine derivative represented by the formula (2).Type: ApplicationFiled: September 30, 2015Publication date: January 21, 2016Applicants: Idemitsu Kosan Co., Ltd., Sony CorporationInventors: Masahiro KAWAMURA, Emiko Kambe, Akifumi Nakamura, Yasunori Kijima, Tadahiko Yoshinaga, Shigeyuki Matsunami
-
Patent number: 9224971Abstract: An organic electroluminescence device having high light emitting efficiency and improved reliability is provided. The organic electroluminescence device includes: an anode containing at least aluminum (Al); a cathode; and an organic layer between the anode and the cathode, the organic layer including a light emitting layer. The organic layer has a hole injection layer composed of a sulfonic acid derivative between the anode and the light emitting layer.Type: GrantFiled: November 19, 2010Date of Patent: December 29, 2015Assignee: JOLED INC.Inventors: Akifumi Nakamura, Yasuharu Ujiie, Yasunori Kijima
-
Publication number: 20150137149Abstract: An LED module includes a submount having a face in a thickness direction thereof, an LED chip bonded to the face of the submount with a first bond, and a patterned wiring circuit electrically connected to the LED chip. The first bond transmits light emitted from the LED chip. The submount is a light-transmissive member having light diffusing properties, and a planar size larger than a planar size of the LED chip. The patterned wiring circuit is provided on the face of the submount so as not to overlap the LED chip. The submount is constituted by a plurality of light-transmissive layers which are stacked in the thickness direction and have different optical properties so that a light-transmissive layer of the plurality of light-transmissive layers which is farther from the LED chip is higher in reflectance in a wavelength range of the light emitted from the LED chip.Type: ApplicationFiled: May 24, 2013Publication date: May 21, 2015Applicant: PANASONIC CORPORATIONInventors: Yoji Urano, Kenichiro Tanaka, Akifumi Nakamura, Toru Hirano, Hideaki Hyuga, Masanori Suzuki, Teruhisa Yokota
-
Publication number: 20150108510Abstract: The LED module includes: a light diffusing substrate having light transmissive properties; an LED chip bonded to a first surface of the light diffusing substrate with a transparent first bond in between; a color converter facing the first surface to cover the LED chip; and a mounting substrate. The color converter is made of transparent material containing phosphor which, when excited by light emitted from the LED chip, emits light having a different color from the LED chip. The mounting substrate includes a diffuse reflection layer diffusely reflecting light emitted from the LED chip and light emitted from the phosphor. The diffuse reflection layer is placed facing a second surface of the light diffusing substrate.Type: ApplicationFiled: May 24, 2013Publication date: April 23, 2015Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Yoji Urano, Akifumi Nakamura, Hayato Ioka, Ryoji Imai, Jun Goda, Toru Hirano, Masanori Suzuki, Hideaki Hyuga
-
Publication number: 20150077982Abstract: An LED module includes: an opaque substrate on which a wiring circuit is provided; a submount bonded to a surface of the opaque substrate with a first bond; an LED chip bonded with a second bond to an opposite side of the submount from the opaque substrate; and wires electrically connecting the LED chip to patterned wiring circuit. In the LED module, the first bond and the second bond each allow light emitted from the LED chip to pass therethrough. The submount is a light-transmissive member. A lighting device includes a device main body and the LED module. The lamp includes the LED module.Type: ApplicationFiled: May 24, 2013Publication date: March 19, 2015Applicant: PANASONIC CORPORATIONInventors: Yoji Urano, Kenichiro Tanaka, Akifumi Nakamura, Toru Hirano, Hideaki Hyuga, Masanori Suzuki, Teruhisa Yokota
-
Publication number: 20150048402Abstract: A light-emitting device in accordance with the present invention includes a mounting substrate; an LED chip bonded to a surface of the mounting substrate with a bond; and an encapsulating portion covering the LED chip. The bond transmits light from the LED chip. The mounting substrate includes: a light-transmissive member having a planar size larger than that of the LED chip; and first and second penetrating wirings which penetrate the light-transmissive member in the thickness direction thereof and are electrically connected to first and second electrodes of the LED chip via first and second wires, respectively. The light-transmissive member includes at least two light-transmissive layers with different optical properties which are stacked in the thickness direction. A light-transmissive layer of the light-transmissive layers which is farther from the LED chip is higher in reflectance to the light.Type: ApplicationFiled: August 30, 2013Publication date: February 19, 2015Applicant: PANASONIC CORPORATIONInventors: Yoji Urano, Akifumi Nakamura, Hayato Ioka, Toru Hirano, Masanori Suzuki, Hideaki Hyuga, Ryoji Imai, Jun Goda
-
Patent number: 8956736Abstract: An organic electroluminescent device for emitting red light is disclosed, including: an anode; a cathode; and an organic layer including a light emitting layer provided between the anode and the cathode, wherein the light-emitting layer contains a red light-emitting guest material and a host material composed of a polycyclic aromatic hydrocarbon compound having a skeleton with a 4 to 7 membered ring, and a photosensitizing layer containing a light-emitting guest material which generates blue light is provided adjacent to the light-emitting layer.Type: GrantFiled: December 12, 2007Date of Patent: February 17, 2015Assignee: Sony CorporationInventors: Shigeyuki Matsunami, Masayuki Kurotaki, Toshihiro Fukuda, Yasunori Kijima, Akifumi Nakamura
-
Patent number: 8872423Abstract: An electroluminescent device is provided with an anode, a cathode, and an organic layer having at least a light-emitting layer and held between the anode and the cathode. A layer with a nitrogen-containing heterocycle derivative therein is arranged between the anode and the light-emitting layer. The layer with the nitrogen-containing heterocycle derivative contained therein has a thickness greater than a hole supply layer arranged between the anode and the light-emitting layer.Type: GrantFiled: February 26, 2008Date of Patent: October 28, 2014Assignee: Sony CorporationInventors: Emiko Kambe, Akifumi Nakamura, Yasunori Kijima, Hiroshi Yamamoto
-
Publication number: 20140151672Abstract: Provided is a light-emitting element in the structure and configuration of causing no possibility of a short circuit between first and second electrodes even if there is any foreign substance or a protrusion on the first electrode. Such a light-emitting element is configured to include, in order, a first electrode 21, an organic layer 23 including a light-emitting layer made of an organic light-emitting material, a semi-transmissive/reflective film 40, a resistance layer 50, and a second electrode 22. The first electrode 21 reflects a light coming from the light-emitting layer, and the second electrode 22 passes through a light coming from the semi-transmissive/reflective film 40 after passing therethrough. The semi-transmissive/reflective film on the organic layer 23 has an average film thickness of 1 nm to 6 nm both inclusive.Type: ApplicationFiled: February 5, 2014Publication date: June 5, 2014Applicant: Sony CorporationInventors: Jiro Yamada, Eisuke Negishi, Hirofumi Nakamura, Akifumi Nakamura, Tadahiko Yoshinaga
-
Patent number: 8664677Abstract: Provided is a light-emitting element in the structure and configuration of causing no possibility of a short circuit between first and second electrodes even if there is any foreign substance or a protrusion on the first electrode. Such a light-emitting element is configured to include, in order, a first electrode 21, an organic layer 23 including a light-emitting layer made of an organic light-emitting material, a semi-transmissive/reflective film 40, a resistance layer 50, and a second electrode 22. The first electrode 21 reflects a light coming from the light-emitting layer, and the second electrode 22 passes through a light coming from the semi-transmissive/reflective film 40 after passing therethrough. The semi-transmissive/reflective film on the organic layer 23 has an average film thickness of 1 nm to 6 nm both inclusive.Type: GrantFiled: July 28, 2009Date of Patent: March 4, 2014Assignee: Sony CorporationInventors: Jiro Yamada, Eisuke Negishi, Hirofumi Nakamura, Akifumi Nakamura, Tadahiko Yoshinaga