Patents by Inventor Takanori AKAISHI
Takanori AKAISHI 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: 11508701Abstract: Each of a plurality of light emitting elements has a hexagonal shape with a center. An interior angle at each of corners is less than 180°. The plurality of light emitting elements include a first light emitting element having a first lateral side surface and a second light emitting element having a second lateral side surface. An orientation of the hexagonal shape of the second light emitting element is rotated by 30 degrees plus 30°+60°×N (N is an integer) with respect to the center of the second light emitting element relative to an orientation of the hexagonal shape of the first light emitting element such that the second lateral side surface is not parallel to the first lateral side surface.Type: GrantFiled: June 10, 2020Date of Patent: November 22, 2022Assignee: NICHIA CORPORATIONInventors: Masaki Hayashi, Yuki Shiota, Junya Narita, Keisuke Kurashita, Takanori Akaishi
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Patent number: 11101414Abstract: A method for manufacturing a wavelength conversion member includes: irradiating plasma on surfaces of phosphor particles; mixing the phosphor particles irradiated by plasma and a liquid form resin member to form a slurry; and curing the slurry.Type: GrantFiled: November 28, 2019Date of Patent: August 24, 2021Assignee: NICHIA CORPORATIONInventors: Yuji Harada, Takanori Akaishi
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Publication number: 20200303357Abstract: Each of a plurality of light emitting elements has a hexagonal shape with a center. An interior angle at each of corners is less than 180°. The plurality of light emitting elements include a first light emitting element having a first lateral side surface and a second light emitting element having a second lateral side surface. An orientation of the hexagonal shape of the second light emitting element is rotated by 30 degrees plus 30°+60°×N (N is an integer) with respect to the center of the second light emitting element relative to an orientation of the hexagonal shape of the first light emitting element such that the second lateral side surface is not parallel to the first lateral side surface.Type: ApplicationFiled: June 10, 2020Publication date: September 24, 2020Applicant: NICHIA CORPORATIONInventors: Masaki HAYASHI, Yuki SHIOTA, Junya NARITA, Keisuke KURASHITA, Takanori AKAISHI
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Patent number: 10720412Abstract: Each of a plurality of light emitting elements has a polygonal shape with five or more corners. An interior angle at each of the corners is less than 180°. The plurality of light emitting elements include a first light emitting element having a first bottom surface, a first top surface opposite to the first bottom surface, and a first lateral side surface between the first bottom surface and the first top surface. The second light emitting element has a second bottom surface, a second top surface opposite to the second bottom surface, and a second lateral side surface between the second bottom surface and the second top surface. The second lateral side surface is provided not to oppose to the first lateral side surface in substantially parallel.Type: GrantFiled: February 12, 2016Date of Patent: July 21, 2020Assignee: NICHIA CORPORATIONInventors: Masaki Hayashi, Yuki Shiota, Junya Narita, Keisuke Kurashita, Takanori Akaishi
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Publication number: 20200176645Abstract: A method for manufacturing a wavelength conversion member includes: irradiating plasma on surfaces of phosphor particles; mixing the phosphor particles irradiated by plasma and a liquid form resin member to form a slurry; and curing the slurry.Type: ApplicationFiled: November 28, 2019Publication date: June 4, 2020Inventors: Yuji HARADA, Takanori AKAISHI
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Patent number: 10622531Abstract: A light-emitting device includes a light emitting element having a pad electrode, and a metal member connected to the pad electrode via a wire. The wire has a layered structure including at least a core material containing copper as a main component, an intermediate layer containing palladium as a main component, and a surface layer containing silver as a main component. The intermediate layer is arranged between the core material and the surface layer.Type: GrantFiled: September 24, 2018Date of Patent: April 14, 2020Assignee: NICHIA CORPORATIONInventors: Yasuo Kato, Yuichi Hamada, Kensaku Hamada, Takanori Akaishi
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Publication number: 20190097107Abstract: A light-emitting device includes a light emitting element having a pad electrode, and a metal member connected to the pad electrode via a wire. The wire has a layered structure including at least a core material containing copper as a main component, an intermediate layer containing palladium as a main component, and a surface layer containing silver as a main component. The intermediate layer is art raged between the core material and the surface layer.Type: ApplicationFiled: September 24, 2018Publication date: March 28, 2019Inventors: Yasuo KATO, Yuichi HAMADA, Kensaku HAMADA, Takanori AKAISHI
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Patent number: 9761764Abstract: A light emitting device includes a package and at least one light emitting element. The package includes a recess portion which has a bottom surface, an opening on a front side opposite to the bottom surface in a front direction vertical to the bottom surface, and an inner peripheral wall connecting the bottom surface and the front side. The bottom surface has distances between opposite sides of the bottom surface and has a longest distance among the distances. The at least one light emitting element is disposed on the bottom surface of the recess portion and has a polygonal shape which has five or more sides and which has a longest diagonal line viewed along the front direction. Each internal angle of the polygonal shape is less than 180°. The longest diagonal line of the polygonal shape is parallel to a lateral line along the longest distance.Type: GrantFiled: January 25, 2016Date of Patent: September 12, 2017Assignee: NICHIA CORPORATIONInventors: Masaki Hayashi, Yuki Shiota, Junya Narita, Keisuke Kurashita, Takanori Akaishi, Motohisa Kitani
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Patent number: 9698328Abstract: A light emitting device includes an electrically conductive member, a light emitting element, a wire, and a sealing member. The wire contains gold and silver and connects the electrically conductive member and the light emitting element. The wire includes a ball portion and a recrystallized region. The ball portion is provided on an electrode of the light emitting element. The recrystallized region is provided on the ball portion and has a length in a range of 50 ?m to 90 ?m. The sealing member has a lower surface and an upper surface opposite to the lower surface and covers the light emitting element and the wire so that the lower surface faces the electrically conductive member and the light emitting element and so that a distance from a top of the ball portion to the upper surface of the sealing member is 90 ?m to 230 ?m.Type: GrantFiled: October 30, 2015Date of Patent: July 4, 2017Assignee: NICHIA CORPORATIONInventors: Takanori Akaishi, Kensaku Hamada, Saiki Yamamoto
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Patent number: 9472735Abstract: A light-emitting device includes a package and at least one light-emitting element. The package includes a concave portion which has a bottom surface. The bottom surface includes sides, package distances between opposite sides among the sides, a longest package distance among the package distances, a lower side among the sides, and an upper side among the sides opposite to the lower side. The at least one light-emitting element is arranged on the bottom surface of the concave portion and has a polygonal shape viewed along a front direction. The polygonal shape has light-emitting element distances between vertexes of the polygonal shape and has a longest light-emitting element distance among the light-emitting element distances. The at least one light-emitting element is arranged such that a light-emitting element lateral line along the longest light-emitting element distance is substantially parallel to a package lateral line along the longest package distance.Type: GrantFiled: February 4, 2016Date of Patent: October 18, 2016Assignee: NICHIA CORPORATIONInventors: Hirofumi Ichikawa, Motohisa Kitani, Junya Narita, Keisuke Kurashita, Takanori Akaishi
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Publication number: 20160240518Abstract: Each of a plurality of light emitting elements has a polygonal shape with five or more corners. An interior angle at each of the corners is less than 180°. The plurality of light emitting elements include a first light emitting element having a first bottom surface, a first top surface opposite to the first bottom surface, and a first lateral side surface between the first bottom surface and the first top surface. The second light emitting element has a second bottom surface, a second top surface opposite to the second bottom surface, and a second lateral side surface between the second bottom surface and the second top surface. The second lateral side surface is provided not to oppose to the first lateral side surface in substantially parallel.Type: ApplicationFiled: February 12, 2016Publication date: August 18, 2016Applicant: NICHIA CORPORATIONInventors: Masaki HAYASHI, Yuki SHIOTA, Junya NARITA, Keisuke KURASHITA, Takanori AKAISHI
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Publication number: 20160233390Abstract: A light emitting device includes a package and at least one light emitting element. The package includes a recess portion which has a bottom surface, an opening on a front side opposite to the bottom surface in a front direction vertical to the bottom surface, and an inner peripheral wall connecting the bottom surface and the front side. The bottom surface has distances between opposite sides of the bottom surface and has a longest distance among the distances. The at least one light emitting element is disposed on the bottom surface of the recess portion and has a polygonal shape which has five or more sides and which has a longest diagonal line viewed along the front direction. Each internal angle of the polygonal shape is less than 180°. The longest diagonal line of the polygonal shape is parallel to a lateral line along the longest distance.Type: ApplicationFiled: January 25, 2016Publication date: August 11, 2016Applicant: NICHIA CORPORATIONInventors: Masaki Hayashi, Yuki Shiota, Junya Narita, Keisuke Kurashita, Takanori Akaishi, Motohisa Kitani
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Publication number: 20160233388Abstract: A light-emitting device includes a package and at least one light-emitting element. The package includes a concave portion which has a bottom surface. The bottom surface includes sides, package distances between opposite sides among the sides, a longest package distance among the package distances, a lower side among the sides, and an upper side among the sides opposite to the lower side. The at least one light-emitting element is arranged on the bottom surface of the concave portion and has a polygonal shape viewed along a front direction. The polygonal shape has light-emitting element distances between vertexes of the polygonal shape and has a longest light-emitting element distance among the light-emitting element distances. The at least one light-emitting element is arranged such that a light-emitting element lateral line along the longest light-emitting element distance is substantially parallel to a package lateral line along the longest package distance.Type: ApplicationFiled: February 4, 2016Publication date: August 11, 2016Applicant: NICHIA CORPORATIONInventors: Hirofumi ICHIKAWA, Motohisa KITANI, Junya NARITA, Keisuke KURASHITA, Takanori AKAISHI
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Publication number: 20160126435Abstract: A light emitting device includes an electrically conductive member, a light emitting element, a wire, and a sealing member. The wire contains gold and silver and connects the electrically conductive member and the light emitting element. The wire includes a ball portion and a recrystallized region. The ball portion is provided on an electrode of the light emitting element. The recrystallized region is provided on the ball portion and has a length in a range of 50 ?m to 90 ?m. The sealing member has a lower surface and an upper surface opposite to the lower surface and covers the light emitting element and the wire so that the lower surface faces the electrically conductive member and the light emitting element and so that a distance from a top of the ball portion to the upper surface of the sealing member is 90 ?m to 230 ?m.Type: ApplicationFiled: October 30, 2015Publication date: May 5, 2016Applicant: NICHIA CORPORATIONInventors: Takanori AKAISHI, Kensaku HAMADA, Saiki YAMAMOTO