Patents by Inventor Takanobu Takenaka
Takanobu Takenaka 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: 11958073Abstract: According to one embodiment, a deposition method includes preparing a processing substrate in which a lower electrode, a rib, and a partition including a lower portion and an upper portion arranged on the lower portion and protruding from a side surface of the lower portion are formed above a substrate, setting a spread angle of vapor of a first material emitted from a first deposition head to a first angle, and depositing the first material on the processing substrate, and setting a spread angle of vapor of a second material emitted from a second deposition head to a second angle larger than the first angle, and depositing the second material on the processing substrate on which the first material is deposited.Type: GrantFiled: January 9, 2023Date of Patent: April 16, 2024Assignee: JAPAN DISPLAY INC.Inventors: Takanobu Takenaka, Atsushi Takeda
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Publication number: 20240112932Abstract: According to one embodiment, a manufacturing device of a display device includes a conveyance mechanism for conveying a processing substrate in a first direction, and first, second, third and fourth evaporation portions arranged in order in the first direction. The first evaporation portion includes a plurality of evaporation chambers for forming an organic layer. The second evaporation portion includes an evaporation chamber for forming an upper electrode. The third evaporation portion includes an evaporation chamber for forming a first transparent layer. The fourth evaporation portion includes an evaporation chamber for forming a second transparent layer having a refractive index less than a refractive index of the first transparent layer on the first transparent layer.Type: ApplicationFiled: September 28, 2023Publication date: April 4, 2024Applicant: Japan Display Inc.Inventors: Takanobu TAKENAKA, Hirofumi MIZUKOSHI, Masaru TAKAYAMA, Yuki HAMADA
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Publication number: 20240099110Abstract: According to one embodiment, a manufacturing method of a display device includes preparing a processing substrate by forming a lower electrode, a rib and a partition, forming an organic layer on the lower electrode, forming an upper electrode on the organic layer, forming a first transparent layer on the upper electrode by depositing a first organic material, forming a second transparent layer on the first transparent layer by depositing a second organic material, and depositing the second organic material on each of a plurality of crystal oscillators included in a film thickness measurement device by emitting the second organic material from first and second nozzles of an evaporation source before forming the second transparent layer.Type: ApplicationFiled: September 20, 2023Publication date: March 21, 2024Applicant: Japan Display Inc.Inventors: Hirofumi MIZUKOSHI, Takanobu TAKENAKA, Masaru TAKAYAMA, Kaichi FUKUDA
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Publication number: 20230380216Abstract: According to one embodiment, a manufacturing method of a display device includes preparing a processing substrate, forming an organic layer, and forming an etching stopper layer on the organic layer. The forming the etching stopper layer includes carrying the processing substrate into a chamber, inside the chamber, emitting a material for forming the etching stopper layer from an evaporation source which inclines with respect to a normal of the processing substrate, and conveying the processing substrate while rotating the processing substrate in a plane orthogonal to the normal, and depositing the material emitted from the evaporation source on the processing substrate.Type: ApplicationFiled: May 16, 2023Publication date: November 23, 2023Applicant: Japan Display Inc.Inventors: Hirofumi MIZUKOSHI, Kaichi FUKUDA, Takanobu TAKENAKA, Masaru TAKAYAMA
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Publication number: 20230354678Abstract: According to one embodiment, a manufacturing method of a display device includes forming processing substrate, forming an organic layer, forming an upper electrode, forming a transparent layer, and forming an inorganic layer. The forming the upper electrode includes inclining a first evaporation source with respect to a normal of the processing substrate and depositing a material emitted from the first evaporation source while conveying the processing substrate. The forming the inorganic layer includes inclining a second evaporation source to a side opposite to a side to which the first evaporation source is inclined and depositing a material emitted from the second evaporation source while conveying the processing substrate.Type: ApplicationFiled: April 12, 2023Publication date: November 2, 2023Applicant: Japan Display Inc.Inventors: Hirofumi MIZUKOSHI, Kaichi FUKUDA, Takanobu TAKENAKA, Masaru TAKAYAMA
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Publication number: 20230345806Abstract: According to one embodiment, a processing substrate is prepared. An organic layer is formed. An etching stopper layer is formed. The forming the etching stopper layer includes, in a first mode, inclining an evaporation source, and depositing a material emitted from the evaporation source while relative positions of the evaporation source and the processing substrate are changed, and in a second mode, inclining the evaporation source in a manner different from the first mode, and depositing the material emitted from the evaporation source while the relative positions of the evaporation source and the processing substrate are changed in an opposite manner of the first mode.Type: ApplicationFiled: April 12, 2023Publication date: October 26, 2023Applicant: Japan Display Inc.Inventors: Hirofumi MIZUKOSHI, Kaichi FUKUDA, Takanobu TAKENAKA, Masaru TAKAYAMA
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Publication number: 20230320142Abstract: According to one embodiment, in a manufacturing method of a display device, a first etching stopper layer and a first sealing layer is formed. A second etching stopper layer and a second sealing layer is formed. A third etching stopper layer and a third sealing layer is formed. An etching rate of the first etching stopper layer is less than an etching rate of the first sealing layer. An etching rate of the second etching stopper layer is less than an etching rate of the second sealing layer. An etching rate of the third etching stopper layer is less than an etching rate of the third sealing layer. A thickness of each of the first etching stopper layer and the second etching stopper layer is greater than a thickness of the third etching stopper layer.Type: ApplicationFiled: March 27, 2023Publication date: October 5, 2023Applicant: Japan Display Inc.Inventors: Hirofumi MIZUKOSHI, Kaichi FUKUDA, Takanobu TAKENAKA, Masaru TAKAYAMA
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Publication number: 20230219114Abstract: According to one embodiment, a deposition method includes preparing a processing substrate in which a lower electrode, a rib, and a partition including a lower portion and an upper portion arranged on the lower portion and protruding from a side surface of the lower portion are formed above a substrate, setting a spread angle of vapor of a first material emitted from a first deposition head to a first angle, and depositing the first material on the processing substrate, and setting a spread angle of vapor of a second material emitted from a second deposition head to a second angle larger than the first angle, and depositing the second material on the processing substrate on which the first material is deposited.Type: ApplicationFiled: January 9, 2023Publication date: July 13, 2023Applicant: Japan Display Inc.Inventors: Takanobu TAKENAKA, Atsushi TAKEDA
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Publication number: 20230220548Abstract: According to one embodiment, a deposition device includes a stage, a deposition head opposed to the stage, and a chamber accommodating the stage and the deposition head. The deposition head comprises a deposition source heating a material and generating vapor, a nozzle connected to the deposition source to emit the vapor generated by the deposition source, a control plate comprising a sleeve surrounding the nozzle, and a movement mechanism moving the control plate along an extension direction of the sleeve.Type: ApplicationFiled: January 10, 2023Publication date: July 13, 2023Applicant: Japan Display Inc.Inventors: Takanobu TAKENAKA, Atsushi TAKEDA
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Patent number: 9773992Abstract: An organic EL display device includes in order from a substrate side: a metal layer; an insulating layer formed on the metal layer; a first electrode layer formed on the insulating layer; an organic layer formed on the first electrode layer; and a second electrode layer formed on the organic layer. The metal layer is for use as a reflective layer configured to reflect, on a surface of the metal layer, light generated from the organic layer by applying a voltage between the first electrode layer and the second electrode layer.Type: GrantFiled: April 6, 2016Date of Patent: September 26, 2017Assignee: Japan Display Inc.Inventors: Satoshi Maruyama, Masakazu Kaida, Hirohisa Tanaka, Takanobu Takenaka, Noriyoshi Kanda
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Publication number: 20160293878Abstract: An organic EL display device includes in order from a substrate side: a metal layer; an insulating layer formed on the metal layer; a first electrode layer formed on the insulating layer; an organic layer formed on the first electrode layer; and a second electrode layer formed on the organic layer. The metal layer is for use as a reflective layer configured to reflect, on a surface of the metal layer, light generated from the organic layer by applying a voltage between the first electrode layer and the second electrode layer.Type: ApplicationFiled: April 6, 2016Publication date: October 6, 2016Inventors: Satoshi MARUYAMA, Masakazu KAIDA, Hirohisa TANAKA, Takanobu TAKENAKA, Noriyoshi KANDA
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Patent number: 8283854Abstract: An organic EL display device includes a first light emission layer which includes a first dopant material having a first absorbance peak in absorbance spectrum characteristics and a first host material having a first absorbance bottom on a shorter wavelength side than the first absorbance peak, the first light emission layer extending over the first to third organic EL elements and being disposed above pixel electrodes of the first to third organic EL elements, and a second light emission layer which includes a second dopant material having a second absorbance peak in absorbance spectrum characteristics and a second host material having a second absorbance bottom on a shorter wavelength side than the first absorbance peak and than the second absorbance peak, the second light emission layer extending over the first to third organic EL elements and being disposed above the first light emission layer.Type: GrantFiled: December 23, 2010Date of Patent: October 9, 2012Assignee: Japan Display Central Inc.Inventors: Shuhei Yokoyama, Masuyuki Oota, Satoshi Okutani, Takanobu Takenaka
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Publication number: 20110089816Abstract: An organic EL display device includes a first light emission layer which includes a first dopant material having a first absorbance peak in absorbance spectrum characteristics and a first host material having a first absorbance bottom on a shorter wavelength side than the first absorbance peak, the first light emission layer extending over the first to third organic EL elements and being disposed above pixel electrodes of the first to third organic EL elements, and a second light emission layer which includes a second dopant material having a second absorbance peak in absorbance spectrum characteristics and a second host material having a second absorbance bottom on a shorter wavelength side than the first absorbance peak and than the second absorbance peak, the second light emission layer extending over the first to third organic EL elements and being disposed above the first light emission layer.Type: ApplicationFiled: December 23, 2010Publication date: April 21, 2011Inventors: Shuhei YOKOYAMA, Masuyuki Oota, Satoshi Okutani, Takanobu Takenaka
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Patent number: 7915813Abstract: An organic EL display device includes a first light emission layer which includes a first dopant material having a first absorbance peak in absorbance spectrum characteristics and a first host material having a first absorbance bottom on a shorter wavelength side than the first absorbance peak, the first light emission layer extending over the first to third organic EL elements and being disposed above pixel electrodes of the first to third organic EL elements, and a second light emission layer which includes a second dopant material having a second absorbance peak in absorbance spectrum characteristics and a second host material having a second absorbance bottom on a shorter wavelength side than the first absorbance peak and than the second absorbance peak, the second light emission layer extending over the first to third organic EL elements and being disposed above the first light emission layer.Type: GrantFiled: March 23, 2009Date of Patent: March 29, 2011Assignee: Toshiba Matsushita Display Technology Co., Ltd.Inventors: Shuhei Yokoyama, Masuyuki Oota, Satoshi Okutani, Takanobu Takenaka
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Publication number: 20090243466Abstract: An organic EL display device includes a first light emission layer which includes a first dopant material having a first absorbance peak in absorbance spectrum characteristics and a first host material having a first absorbance bottom on a shorter wavelength side than the first absorbance peak, the first light emission layer extending over the first to third organic EL elements and being disposed above pixel electrodes of the first to third organic EL elements, and a second light emission layer which includes a second dopant material having a second absorbance peak in absorbance spectrum characteristics and a second host material having a second absorbance bottom on a shorter wavelength side than the first absorbance peak and than the second absorbance peak, the second light emission layer extending over the first to third organic EL elements and being disposed above the first light emission layer.Type: ApplicationFiled: March 23, 2009Publication date: October 1, 2009Inventors: Shuhei Yokoyama, Masuyuki Oota, Satoshi Okutani, Takanobu Takenaka