Patents by Inventor Kenta NIKI
Kenta NIKI 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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Publication number: 20230416603Abstract: A semiconductor nanoparticle includes a core and a shell covering a surface of the core. The shell has a larger bandgap energy than the core and is in heterojunction with the core. The semiconductor nanoparticle emits light when irradiated with light. The core is made of a semiconductor that contains M1, M2, and Z. M1 is at least one element selected from the group consisting of Ag, Cu, and Au. M2 is at least one element selected from the group consisting of Al, Ga, In and Tl. Z is at least one element selected from the group consisting of S, Se, and Te. The shell is made of a semiconductor that consists essentially of a Group 13 element and a Group 16 element.Type: ApplicationFiled: September 11, 2023Publication date: December 28, 2023Applicants: OSAKA UNIVERSITY, NATIONAL UNIVERSITY CORPORATION TOKAI NATIONAL HIGHER EDUCATION AND RESEARCH SYSTEM, NICHIA CORPORATIONInventors: Susumu KUWABATA, Taro UEMATSU, Kazutaka WAJIMA, Tsukasa TORIMOTO, Tatsuya KAMEYAMA, Daisuke OYAMATSU, Kenta NIKI
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Patent number: 11811007Abstract: A method for manufacturing a light emitting device includes preparing a light emitting device including: a package defining a recess; a first light source placed within the recess, and including a first light emitting element and a first wavelength conversion member; a second light source placed within the recess; and a second wavelength conversion member in contact with and covering the first light source and the second light source, the first light source and the second light source being configured to emit light independently of each other. The method further includes: emitting light simultaneously from the first light source and the second light source to obtain mixed light for which light from the first light source, light from the second light source, and light from the second wavelength conversion member are mixed; determining a chromaticity of the mixed light; and binning the mixed light based on the chromaticity.Type: GrantFiled: May 29, 2020Date of Patent: November 7, 2023Assignee: NICHIA CORPORATIONInventors: Shigeharu Yamauchi, Kenta Niki
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Patent number: 11788003Abstract: A semiconductor nanoparticle includes a core and a shell covering a surface of the core. The shell has a larger bandgap energy than the core and is in heterojunction with the core. The semiconductor nanoparticle emits light when irradiated with light. The core is made of a semiconductor that contains M1, M2, and Z. M1 is at least one element selected from the group consisting of Ag, Cu, and Au. M2 is at least one element selected from the group consisting of Al, Ga, In and Tl. Z is at least one element selected from the group consisting of S, Se, and Te. The shell is made of a semiconductor that consists essentially of a Group 13 element and a Group 16 element.Type: GrantFiled: September 28, 2021Date of Patent: October 17, 2023Assignees: OSAKA UNIVERSITY, NATIONAL UNIVERSITY CORPORATION TOKAI NATIONAL HIGHER EDUCATION AND RESEARCH SYSTEM, NICHIA CORPORATIONInventors: Susumu Kuwabata, Taro Uematsu, Kazutaka Wajima, Tsukasa Torimoto, Tatsuya Kameyama, Daisuke Oyamatsu, Kenta Niki
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Publication number: 20230253533Abstract: Semiconductor nanoparticles including Ag, In, Ga, and S are provided. In the semiconductor nanoparticles, a ratio of a number of Ga atoms to a total number of In and Ga atoms is 0.95 or less. The semiconductor nanoparticles emit light having an emission peak with a wavelength in a range of from 500 nm to less than 590 nm, and a half bandwidth of 70 nm or less, and have an average particle diameter of 10 nm or less.Type: ApplicationFiled: March 28, 2023Publication date: August 10, 2023Applicants: NATIONAL UNIVERSITY CORPORATION TOKAI NATIONAL HIGHER EDUCATION AND RESEARCH SYSTEM, OSAKA UNIVERSITY, NICHIA CORPORATIONInventors: Tsukasa TORIMOTO, Tatsuya KAMEYAMA, Marino KISHI, Chie MIYAMAE, Susumu KUWABATA, Taro UEMATSU, Daisuke OYAMATSU, Kenta NIKI
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Publication number: 20230243485Abstract: A light emitting device includes one or more light emitting elements and a plurality of fluorescent materials, and emits a first light, a second light, and a third light, wherein the first light has a correlated color temperature between 1,500 K and 3,500 K and a color rendering index R9 of 50 or more, the second light has a correlated color temperature between 3,500 K and 5,500 K and a color rendering index R9 of 50 or more, the third light has values of X and Y coordinates in the chromaticity diagram of the CIE1931 color system smaller than the values of X and Y coordinates at a color temperature of 5,500 K on the black body radiation locus, and a light having a correlated color temperature of 6,500 K has a color rendering index R9 of 50 or more and a melanopic ratio of 1.0 or more.Type: ApplicationFiled: January 26, 2023Publication date: August 3, 2023Applicant: NICHIA CORPORATIONInventors: Kenta NIKI, Jun TAKAHASHI
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Patent number: 11652194Abstract: Semiconductor nanoparticles including Ag, In, Ga, and S are provided. In the semiconductor nanoparticles, a ratio of a number of Ga atoms to a total number of In and Ga atoms is 0.95 or less. The semiconductor nanoparticles emit light having an emission peak with a wavelength in a range of from 500 nm to less than 590 nm, and a half bandwidth of 70 nm or less, and have an average particle diameter of 10 nm or less.Type: GrantFiled: July 14, 2021Date of Patent: May 16, 2023Assignees: NATIONAL UNIVERSITY CORPORATION TOKAI NATIONAL HIGHER EDUCATION AND RESEARCH SYSTEM, OSAKA UNIVERSITY, NICHIA CORPORATIONInventors: Tsukasa Torimoto, Tatsuya Kameyama, Marino Kishi, Chie Miyamae, Susumu Kuwabata, Taro Uematsu, Daisuke Oyamatsu, Kenta Niki
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Patent number: 11598508Abstract: A light emitting device includes one or more light emitting elements and a plurality of fluorescent materials, and emits a first light, a second light, and a third light, wherein the first light has a correlated color temperature between 1,500 K and 3,500 K and a color rendering index R9 of 50 or more, the second light has a correlated color temperature between 3,500 K and 5,500 K and a color rendering index R9 of 50 or more, the third light has values of X and Y coordinates in the chromaticity diagram of the CIE1931 color system smaller than the values of X and Y coordinates at a color temperature of 5,500 K on the black body radiation locus, and a light having a correlated color temperature of 6,500 K has a color rendering index R9 of 50 or more and a melanopic ratio of 1.0 or more.Type: GrantFiled: June 30, 2021Date of Patent: March 7, 2023Assignee: NICHIA CORPORATIONInventors: Kenta Niki, Jun Takahashi
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Publication number: 20220017819Abstract: A semiconductor nanoparticle includes a core and a shell covering a surface of the core. The shell has a larger bandgap energy than the core and is in heterojunction with the core. The semiconductor nanoparticle emits light when irradiated with light. The core is made of a semiconductor that contains M1, M2, and Z. M1 is at least one element selected from the group consisting of Ag, Cu, and Au. M2 is at least one element selected from the group consisting of Al, Ga, In and Tl. Z is at least one element selected from the group consisting of S, Se, and Te. The shell is made of a semiconductor that consists essentially of a Group 13 element and a Group 16 element.Type: ApplicationFiled: September 28, 2021Publication date: January 20, 2022Applicants: OSAKA UNIVERSITY, NATIONAL UNIVERSITY CORPORATION TOKAI NATIONAL HIGHER EDUCATION AND RESEARCH SYSTEM, NICHIA CORPORATIONInventors: Susumu KUWABATA, Taro UEMATSU, Kazutaka WAJIMA, Tsukasa TORIMOTO, Tatsuya KAMEYAMA, Daisuke OYAMATSU, Kenta NIKI
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Publication number: 20210404632Abstract: A light emitting device includes one or more light emitting elements and a plurality of fluorescent materials, and emits a first light, a second light, and a third light, wherein the first light has a correlated color temperature between 1,500 K and 3,500 K and a color rendering index R9 of 50 or more, the second light has a correlated color temperature between 3,500 K and 5,500 K and a color rendering index R9 of 50 or more, the third light has values of X and Y coordinates in the chromaticity diagram of the CIE1931 color system smaller than the values of X and Y coordinates at a color temperature of 5,500 K on the black body radiation locus, and a light having a correlated color temperature of 6,500 K has a color rendering index R9 of 50 or more and a melanopic ratio of 1.0 or more.Type: ApplicationFiled: June 30, 2021Publication date: December 30, 2021Applicant: NICHIA CORPORATIONInventors: Kenta Niki, Jun Takahashi
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Publication number: 20210343908Abstract: Semiconductor nanoparticles including Ag, In, Ga, and S are provided. In the semiconductor nanoparticles, a ratio of a number of Ga atoms to a total number of In and Ga atoms is 0.95 or less. The semiconductor nanoparticles emit light having an emission peak with a wavelength in a range of from 500 nm to less than 590 nm, and a half bandwidth of 70 nm or less, and have an average particle diameter of 10 nm or less.Type: ApplicationFiled: July 14, 2021Publication date: November 4, 2021Applicants: NATIONAL UNIVERSITY CORPORATION TOKAI NATIONAL HIGHER EDUCATION AND RESEARCH SYSTEM, OSAKA UNIVERSITY, NICHIA CORPORATIONInventors: Tsukasa TORIMOTO, Tatsuya KAMEYAMA, Marino KISHI, Chie MIYAMAE, Susumu KUWABATA, Taro UEMATSU, Daisuke OYAMATSU, Kenta NIKI
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Patent number: 11162024Abstract: A semiconductor nanoparticle includes a core and a shell covering a surface of the core. The shell has a larger bandgap energy than the core and is in heterojunction with the core. The semiconductor nanoparticle emits light when irradiated with light. The core is made of a semiconductor that contains M1, M2, and Z. M1 is at least one element selected from the group consisting of Ag, Cu, and Au. M2 is at least one element selected from the group consisting of Al, Ga, In and Tl. Z is at least one element selected from the group consisting of S, Se, and Te. The shell is made of a semiconductor that consists essentially of a Group 13 element and a Group 16 element.Type: GrantFiled: January 2, 2020Date of Patent: November 2, 2021Assignees: OSAKA UNIVERSITY, National University Corporation Tokai National Higher Education and Research System, NICHIA CORPORATIONInventors: Susumu Kuwabata, Taro Uematsu, Kazutaka Wajima, Tsukasa Torimoto, Tatsuya Kameyama, Daisuke Oyamatsu, Kenta Niki
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Patent number: 11101413Abstract: Semiconductor nanoparticles including Ag, In, Ga, and S are provided. In the semiconductor nanoparticles, a ratio of a number of Ga atoms to a total number of In and Ga atoms is 0.95 or less. The semiconductor nanoparticles emit light having an emission peak with a wavelength in a range of from 500 nm to less than 590 nm, and a half bandwidth of 70 nm or less, and have an average particle diameter of 10 nm or less.Type: GrantFiled: February 28, 2018Date of Patent: August 24, 2021Assignees: NATIONAL UNIVERSITY CORPORATION TOKAI NATIONAL, OSAKA UNIVERSITY, NICHIA CORPORATIONInventors: Tsukasa Torimoto, Tatsuya Kameyama, Marino Kishi, Chie Miyamae, Susumu Kuwabata, Taro Uematsu, Daisuke Oyamatsu, Kenta Niki
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Publication number: 20200381593Abstract: A method for manufacturing a light emitting device includes preparing a light emitting device including: a package defining a recess; a first light source placed within the recess, and including a first light emitting element and a first wavelength conversion member; a second light source placed within the recess; and a second wavelength conversion member in contact with and covering the first light source and the second light source, the first light source and the second light source being configured to emit light independently of each other. The method further includes: emitting light simultaneously from the first light source and the second light source to obtain mixed light for which light from the first light source, light from the second light source, and light from the second wavelength conversion member are mixed; determining a chromaticity of the mixed light; and binning the mixed light based on the chromaticity.Type: ApplicationFiled: May 29, 2020Publication date: December 3, 2020Applicant: NICHIA CORPORATIONInventors: Shigeharu YAMAUCHI, Kenta NIKI
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Publication number: 20200140752Abstract: A semiconductor nanoparticle includes a core and a shell covering a surface of the core. The shell has a larger bandgap energy than the core and is in heterojunction with the core. The semiconductor nanoparticle emits light when irradiated with light. The core is made of a semiconductor that contains M1, M2, and Z. M1 is at least one element selected from the group consisting of Ag, Cu, and Au. M2 is at least one element selected from the group consisting of Al, Ga, In and Tl. Z is at least one element selected from the group consisting of S, Se, and Te. The shell is made of a semiconductor that consists essentially of a Group 13 element and a Group 16 element.Type: ApplicationFiled: January 2, 2020Publication date: May 7, 2020Applicants: OSAKA UNIVERSITY, NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY, NICHIA CORPORATIONInventors: Susumu KUWABATA, Taro UEMATSU, Kazutaka WAJIMA, Tsukasa TORIMOTO, Tatsuya KAMEYAMA, Daisuke OYAMATSU, Kenta NIKI
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Patent number: 10563122Abstract: A semiconductor nanoparticle includes a core and a shell covering a surface of the core. The shell has a larger bandgap energy than the core and is in heterojunction with the core. The semiconductor nanoparticle emits light when irradiated with light. The core is made of a semiconductor that contains M1, M2, and Z. M1 is at least one element selected from the group consisting of Ag, Cu, and Au. M2 is at least one element selected from the group consisting of Al, Ga, In and Tl. Z is at least one element selected from the group consisting of S, Se, and Te. The shell is made of a semiconductor that consists essentially of a Group 13 element and a Group 16 element.Type: GrantFiled: March 15, 2017Date of Patent: February 18, 2020Assignees: OSAKA UNIVERSITY, NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY, NICHIA CORPORATIONInventors: Susumu Kuwabata, Taro Uematsu, Kazutaka Wajima, Tsukasa Torimoto, Tatsuya Kameyama, Daisuke Oyamatsu, Kenta Niki
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Publication number: 20200006601Abstract: Semiconductor nanoparticles including Ag, In, Ga, and S are provided. In the semiconductor nanoparticles, a ratio of a number of Ga atoms to a total number of In and Ga atoms is 0.95 or less. The semiconductor nanoparticles emit light having an emission peak with a wavelength in a range of from 500 nm to less than 590 nm, and a half bandwidth of 70 nm or less, and have an average particle diameter of 10 nm or less.Type: ApplicationFiled: February 28, 2018Publication date: January 2, 2020Applicants: NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY, OSAKA UNIVERSITY, NICHIA CORPORATIONInventors: Tsukasa TORIMOTO, Tatsuya KAMEYAMA, Marino KISHI, Chie MIYAMAE, Susumu KUWABATA, Taro UEMATSU, Daisuke OYAMATSU, Kenta NIKI
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Publication number: 20170267924Abstract: A semiconductor nanoparticle includes a core and a shell covering a surface of the core. The shell has a larger bandgap energy than the core and is in heterojunction with the core. The semiconductor nanoparticle emits light when irradiated with light. The core is made of a semiconductor that contains M1, M2, and Z. M1 is at least one element selected from the group consisting of Ag, Cu, and Au. M2 is at least one element selected from the group consisting of Al, Ga, In and Tl. Z is at least one element selected from the group consisting of S, Se, and Te. The shell is made of a semiconductor that consists essentially of a Group 13 element and a Group 16 element.Type: ApplicationFiled: March 15, 2017Publication date: September 21, 2017Applicants: OSAKA UNIVERSITY, NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY, NICHIA CORPORATIONInventors: Susumu KUWABATA, Taro UEMATSU, Kazutaka WAJIMA, Tsukasa TORIMOTO, Tatsuya KAMEYAMA, Daisuke OYAMATSU, Kenta NIKI