Patents by Inventor Shota Okamoto
Shota Okamoto 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: 11957001Abstract: A bank has an opening including a first opening and a second opening. The second opening extends from the first opening in such a direction that the second opening overlaps the first electrode. The second opening at least partially overlaps the first electrode. The first electrode has an end close to the first opening and overlapping the second opening. The second opening has a maximum width smaller than a maximum width of the first opening. The widths are measured perpendicular to the direction in which the second opening extends from the first opening.Type: GrantFiled: September 27, 2018Date of Patent: April 9, 2024Assignee: SHARP KABUSHIKI KAISHAInventors: Youhei Nakanishi, Shota Okamoto
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Publication number: 20240055551Abstract: A light-emitting device includes a bank provided with an opening including an opening sidewall that is inclined, a lower layer electrode provided with an inclined face and formed on the bank, closing the opening, a upper layer electrode provided with an inclined face and formed above the second electrode, and an EL layer provided with an inclined face and formed between the lower layer electrode and the upper layer electrode, adjacently to the lower layer electrode and the upper layer electrode. The light-emitting device further includes a first refractive index layer having a refractive index higher than 1.7, and a second refractive index layer having a refractive index lower than the refractive index of the first refractive index layer. The first and second refractive index layers are formed in this order on the upper layer electrode at a through-hole.Type: ApplicationFiled: April 14, 2021Publication date: February 15, 2024Inventors: Masayuki KANEHIRO, Youhei NAKANISHI, Shota OKAMOTO
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Patent number: 11778843Abstract: A light-emitting element includes an anode, a hole transport layer, a quantum dot light-emitting layer, an electron transport layer, and a cathode, in this order. The electron transport layer includes a particulate metal oxide and a conductive resin that disperses the metal oxide.Type: GrantFiled: September 18, 2018Date of Patent: October 3, 2023Assignee: SHARP KABUSHIKI KAISHAInventors: Hisayuki Utsumi, Youhei Nakanishi, Masayuki Kanehiro, Shota Okamoto, Hiroki Imabayashi, Tatsuya Ryohwa, Kanako Nakata
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Publication number: 20230209924Abstract: A display device includes a base material, a thin film transistor provided on the base material, a light-emitting-element layer provided on the thin film transistor layer and including a plurality of light-emitting elements each including a first electrode, a functional layer, and a second electrode. The plurality of light-emitting elements are formed to emit lights in different colors. The display device also includes: a contact portion provided to a frame region and electrically connecting together a terminal unit provided to the frame region and the second electrode through a routed wire; and a block structure shaped into a frame and provided to the contact portion beside a display region, in order to block formation of the functional layer on the contact portion.Type: ApplicationFiled: May 20, 2020Publication date: June 29, 2023Inventor: SHOTA OKAMOTO
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Publication number: 20230120913Abstract: A display device provided with a display region including a plurality of pixels and a frame region surrounding the display region includes a thin film transistor layer, a light-emitting element layer including a plurality of light-emitting elements, each including a first electrode, a light emitting layer, and a second electrode, and each having a different luminescent color. In the light-emitting layer, an oxetane monomer, an epoxy monomer, and a radical polymerization initiator are used.Type: ApplicationFiled: April 7, 2020Publication date: April 20, 2023Inventors: HIROKI IMABAYASHI, MASAYUKI KANEHIRO, HISAYUKI UTSUMI, SHOTA OKAMOTO, Yohei NAKANISHI
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Publication number: 20220173171Abstract: A display device includes a light-emitting element layer including a plurality of light-emitting elements. The light-emitting element layer includes, for each of the plurality of light-emitting elements, a first electrode and a plurality of openings exposing the first electrode, and includes an edge cover covering an end portion of the first electrode, a plurality of light-emitting layers covering each of the plurality of openings, and a second electrode that is common to the plurality of light-emitting elements and covers the plurality of light-emitting layers. The second electrode includes a metal nanowire. Furthermore, the light-emitting element layer includes an auxiliary wiring line provided in a lattice pattern in a position overlapping the edge cover, and the auxiliary wiring line and the metal nanowire are electrically connected to each other.Type: ApplicationFiled: April 8, 2019Publication date: June 2, 2022Inventors: MASAYUKI KANEHIRO, SHOTA OKAMOTO
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Publication number: 20220173348Abstract: Provided are a TFT layer, a light-emitting element layer provided with a plurality of light-emitting elements each including a first electrode, a function layer, and a second electrode, and a sealing layer configured to seal the light-emitting element layer. The second electrode is an electrode common to the plurality of light-emitting elements and including metal nanowires. The function layer includes a light-emitting layer and an electron transport layer provided between the light-emitting layer and the second electrode. The electron transport layer includes zinc oxide nanoparticles and a water soluble resin.Type: ApplicationFiled: March 6, 2019Publication date: June 2, 2022Inventors: HISAYUKI UTSUMI, YOUHEI NAKANISHI, MASAYUKI KANEHIRO, SHOTA OKAMOTO, HIROKI IMABAYASHI
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Publication number: 20220037604Abstract: A light-emitting element includes an anode, a hole transport layer, a quantum dot light-emitting layer, an electron transport layer, and a cathode, in this order. The electron transport layer includes a particulate metal oxide and a conductive resin that disperses the metal oxide.Type: ApplicationFiled: September 18, 2018Publication date: February 3, 2022Inventors: HISAYUKI UTSUMI, YOUHEI NAKANISHI, MASAYUKI KANEHIRO, SHOTA OKAMOTO, HIROKI IMABAYASHI, TATSUYA RYOHWA, KANAKO NAKATA
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Publication number: 20220037609Abstract: A display device includes an anode electrode a cathode electrode a light-emitting layer, and an electron transport layer. The light-emitting layer is provided between the anode electrode and the cathode electrode. The electron transport layer is provided between the cathode electrode and the light-emitting layer. The electron transport layer includes a nanoparticle of a metal oxide, and an organic modifier configured to cover a surface of the nanoparticle and having electron donating characteristics.Type: ApplicationFiled: December 11, 2018Publication date: February 3, 2022Inventors: HISAYUKI UTSUMI, YOUHEI NAKANISHI, MASAYUKI KANEHIRO, SHOTA OKAMOTO, HIROKI IMABAYASHI
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Patent number: 11217763Abstract: To provide a light-emitting device that can obtain fluorescence having a narrow spectrum more efficiently, a light-emitting device includes: a light-emitting layer in which thermally activated delayed fluorescence bodies and quantum dots are dispersed; a first electrode in a lower layer than the light-emitting layer; and a second electrode in an upper layer than the light-emitting layer, wherein a light emission spectrum of the thermally activated delayed fluorescence bodies and an absorption spectrum of the quantum dots at least partially overlap each other.Type: GrantFiled: September 5, 2017Date of Patent: January 4, 2022Assignee: SHARP KABUSHIKI KAISHAInventors: Yuto Tsukamoto, Shinichi Kawato, Tokiyoshi Umeda, Manabu Niboshi, Youhei Nakanishi, Hisayuki Utsumi, Masayuki Kanehiro, Shota Okamoto
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Publication number: 20210351251Abstract: A bank has an opening including a first opening and a second opening. The second opening extends from the first opening in such a direction that the second opening overlaps the first electrode. The second opening at least partially overlaps the first electrode. The first electrode has an end close to the first opening and overlapping the second opening. The second opening has a maximum width smaller than a maximum width of the first opening. The widths are measured perpendicular to the direction in which the second opening extends from the first opening.Type: ApplicationFiled: September 27, 2018Publication date: November 11, 2021Inventors: YOUHEI NAKANISHI, SHOTA OKAMOTO
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Publication number: 20210343989Abstract: A display device (500) includes a sub-pixel (100) including a light-emitting element layer (10). The sub-pixel (100) includes: a first electrode (12); an edge cover (11); a projection (15) projecting from the front face of the first electrode (12); and a functional layer (13). With respect to the front face of the first electrode (12) where a first height (h1) is a height up to a front face of a protrusion of the functional layer (13) provided along an edge of the projection (15), a second height (h2) is a height up to a tip of the projection (15), and a third height (h3) is a height up to a front face of the edge cover (11), the second height (h2) is greater than the first height (h1) and smaller than the third height (h3).Type: ApplicationFiled: September 28, 2018Publication date: November 4, 2021Inventors: HIROKI IMABAYASHI, SHOTA OKAMOTO, YOUHEI NAKANISHI, MASAYUKI KANEHIRO, HISAYUKI UTSUMI
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Publication number: 20210273189Abstract: Provided is a light-emitting device including a light-emitting element including a first electrode, a second electrode, and a quantum dot layer between the first electrode and the second electrode, wherein, in the quantum dot layer, quantum dots each including a core, a shell covering the core, and a ligand coordinated with a surface of the shell and having defect compensation properties are layered.Type: ApplicationFiled: July 24, 2018Publication date: September 2, 2021Inventors: HIROKI IMABAYASHI, MASAYUKI KANEHIRO, HISAYUKI UTSUMI, SHOTA OKAMOTO, YOUHEI NAKANISHI, TATSUYA RYOHWA, KANAKO NAKATA
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Publication number: 20210135137Abstract: To provide a light-emitting device that easily generates energy transition to fluorescent materials having a peak of the light emission spectrum in the deep-blue region and has improved efficiency of light emission, provided is a light-emitting device including a light-emitting layer in which quantum dots and light emitters being phosphors or phosphorescent members are dispersed, a first electrode in a lower layer than the light-emitting layer, and a second electrode in an upper layer than the light-emitting layer, wherein a light emission spectrum of the quantum dots and an absorption spectrum of the light emitters at least partially overlap each other.Type: ApplicationFiled: September 5, 2017Publication date: May 6, 2021Inventors: YUTO TSUKAMOTO, SHINICHI KAWATO, TOKIYOSHI UMEDA, MANABU NIBOSHI, YOUHEI NAKANISHI, HISAYUKI UTSUMI, MASAYUKI KANEHIRO, SHOTA OKAMOTO
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Patent number: 10957815Abstract: To provide a light-emitting device for achieving fluorescence emission with higher efficiency and longer life, a light-emitting device includes an exciton generation layer in which quantum dots are dispersed, a light-emitting layer in which light emitters, which are phosphors or phosphorescent members, are dispersed, the light-emitting layer adjoining the exciton generation layer in a vertical direction, a first electrode located on a lower side of the exciton generation layer and the light-emitting layer, and a second electrode located on an upper side of the exciton generation layer and the light-emitting layer, and the light emission spectrum of the quantum dots and the absorption spectrum of the light emitters at least partially overlap.Type: GrantFiled: September 5, 2017Date of Patent: March 23, 2021Assignee: SHARP KABUSHIKI KAISHAInventors: Yuto Tsukamoto, Shinichi Kawato, Tokiyoshi Umeda, Manabu Niboshi, Youhei Nakanishi, Hisayuki Utsumi, Masayuki Kanehiro, Shota Okamoto
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Publication number: 20210066630Abstract: To provide a light-emitting device that can obtain fluorescence having a narrow spectrum more efficiently, a light-emitting device includes: a light-emitting layer in which thermally activated delayed fluorescence bodies and quantum dots are dispersed; a first electrode in a lower layer than the light-emitting layer and a second electrode in an upper layer than the light-emitting layer, wherein a light emission spectrum of the thermally activated delayed fluorescence bodies and an absorption spectrum of the quantum dots at least partially overlap each other.Type: ApplicationFiled: September 5, 2017Publication date: March 4, 2021Inventors: YUTO TSUKAMOTO, SHINICHI KAWATO, TOKIYOSHI UMEDA, MANABU NIBOSHI, YOUHEI NAKANISHI, HISAYUKI UTSUMI, MASAYUKI KANEHIRO, SHOTA OKAMOTO
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Publication number: 20200381585Abstract: To provide a light-emitting device for achieving fluorescence emission with higher efficiency and longer life, a light-emitting device includes an exciton generation layer in which quantum dots are dispersed, a light-emitting layer in which light emitters, which are phosphors or phosphorescent members, are dispersed, the light-emitting layer adjoining the exciton generation layer in a vertical direction, a first electrode located on a lower side of the exciton generation layer and the light-emitting layer, and a second electrode located on an upper side of the exciton generation layer and the light-emitting layer, and the light emission spectrum of the quantum dots and the absorption spectrum of the light emitters at least partially overlap.Type: ApplicationFiled: September 5, 2017Publication date: December 3, 2020Inventors: Yuto TSUKAMOTO, Shinichi KAWATO, Tokiyoshi UMEDA, Manabu NIBOSHI, Youhei NAKANISHI, Hisayuki UTSUMI, Masayuki KANEHIRO, Shota OKAMOTO
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Publication number: 20200136075Abstract: With the purpose of providing a light-emitting layer that is suitable for mass production and a light-emitting device having the light-emitting layer, without including a high-temperature process, there is provided a light-emitting device having: a light-emitting layer formed of a photosensitive material, in which quantum dots are dispersed; a first electrode of a lower layer than the light-emitting layer; and a second electrode of a higher layer than the light-emitting layer.Type: ApplicationFiled: June 15, 2018Publication date: April 30, 2020Inventors: MASAYUKI KANEHIRO, TAKESHI ISHIDA, YOUHEI NAKANISHI, SHOTA OKAMOTO
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Patent number: 10620483Abstract: A method of producing a liquid crystal panel 10 having a non-quadrangular outline includes a common liquid crystal panel producing process, a cutting process of cutting the common liquid crystal panel 50 along a cutting line L10 that is along the outline such that a part of the sealing material 54 is removed and a remaining part of the sealing material 54 remains and forming on the common liquid crystal panel 50 a sealing material removed edge portion 50A at which the part of the sealing material 54 is removed to expose the liquid crystal layer 51, a line correction process of correcting the lines 55, 56, 59 near the processed edge portion 53E of the array substrate 53, and a sealing process of providing sealing resin R on the sealing material removed edge portion 50A to close a space between the processed edge portions 52E, 53E of the substrates and seal the liquid crystal layer 51 with the remaining part of the sealing material 54.Type: GrantFiled: March 23, 2017Date of Patent: April 14, 2020Assignee: SHARP KABUSHIKI KAISHAInventors: Youhei Nakanishi, Masayuki Kanehiro, Shota Okamoto, Shinsuke Maeda
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Patent number: 10578941Abstract: In the present disclosure, regions where a short circuit may have occurred due to dividing are isolated from a display region. In a gate line (13G) of an nth row, a gate line detour section (50G) that is provided corresponding to an intersection (CG,n,m) with a source line (15S) of an mth column has: a start section (51G) which is bent toward the ?Y direction from a start position (XG,m(1), YG,n) that is in the ?X direction relative to the intersection; and straddling sections (52G) which straddle a straight line (X=XS,m+dS/2) that passes through a +X direction end of the intersection and extends in the Y axis direction.Type: GrantFiled: September 22, 2017Date of Patent: March 3, 2020Assignee: SHARP KABUSHIKI KAISHAInventors: Shota Okamoto, Youhei Nakanishi, Masayuki Kanehiro