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公开(公告)号：US20240395982A1
公开(公告)日：2024-11-28
申请号：US18659522
申请日：2024-05-09
Applicant: Nichia Corporation
Inventor： Yusuke HAYASHI , Satoshi SHICHIJO , Hiroki FUKUTA
Abstract: A light-emitting device includes a light-emitting element configured to emit a first light, a wavelength conversion member disposed on an upper surface of the light-emitting element and configured to emit, by excitation by the first light, a second light having a peak wavelength longer than a peak wavelength of the first light, and a covering member disposed around the light-emitting element and the wavelength conversion member and containing a light-reflective material and a phosphor. The phosphor is configured to emit, by excitation by the first light, a third light having a peak wavelength longer than the peak wavelength of the second light. The content of the phosphor above the upper surface of the light-emitting element is less than the content of the phosphor below the upper surface of the light-emitting element.
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公开(公告)号：US20210020621A1
公开(公告)日：2021-01-21
申请号：US17033930
申请日：2020-09-28
Applicant: NICHIA CORPORATION
Inventor： Kenji OZEKI , Hiroki FUKUTA
Abstract: A light emitting device includes a substrate and a light emitting element mounted on the substrate, a light transmissive member, covering member, first and second protruding members, and a protective element. The light transmissive member is disposed on an upper surface of the light emitting element. The covering member covers an upper surface of the substrate, a lateral surface of the light emitting element, and at least a portion of a lateral surface of the light transmissive member such that an upper surface of the light transmissive member is exposed. The first protruding member and the second protruding member are provided on the substrate such that the light emitting element and the light transmissive member are positioned between the first protruding member and the second protruding member. The protective element is mounted on the substrate so as to be positioned between the light emitting element and the second protruding member.
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公开(公告)号：US20230392769A1
公开(公告)日：2023-12-07
申请号：US18451215
申请日：2023-08-17
Applicant: NICHIA CORPORATION
Inventor： Yusuke HAYASHI , Satoshi SHICHIJO , Hiroki FUKUTA
Abstract: A light emitting device includes: a substrate; a light emitting element disposed on the substrate; a first wavelength conversion member disposed on the light emitting element and having a lower surface bonded to the light emitting element, an upper surface opposite the lower surface, and a lateral surface that meets the upper surface; a first light reflecting member disposed on an upper surface of the substrate and covering lateral surfaces of the light emitting element; and a second wavelength conversion member disposed on the first light reflecting member, on the upper surface of the substrate, and on the lateral surface of the first wavelength conversion member without covering the upper surface of the first wavelength conversion member.
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公开(公告)号：US20220302098A1
公开(公告)日：2022-09-22
申请号：US17837028
申请日：2022-06-10
Applicant: NICHIA CORPORATION
Inventor： Kenji OZEKI , Hiroki FUKUTA
Abstract: A light emitting device includes a substrate, a light emitting element, and a protective element. The substrate includes a support member and a plurality of wirings disposed on an upper surface of the support member. The substrate has a first side extending in a first direction and a second side opposite to the first side. The light emitting element is disposed on an upper surface of the substrate, and the protective element is disposed on the upper surface of the substrate. The plurality of wirings has a plurality of external connecting portions disposed adjacent to the first side and arranged in the first direction in a plan view. The protective element is disposed between the light emitting element and the second side of the substrate.
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公开(公告)号：US20220246815A1
公开(公告)日：2022-08-04
申请号：US17592416
申请日：2022-02-03
Applicant: NICHIA CORPORATION
Inventor： Naoto FURUHA , Hiroki FUKUTA
Abstract: A light emitting element includes a semiconductor layered body, an insulating film, first and second electrodes, and first and second external connection portions. The semiconductor layered body defines exposed portions in which the first semiconductor layer is exposed from the second semiconductor layer and the light emitting layer. In the plan view, the first external connection portion includes a plurality of first portions located between the exposed portions in a first direction, and arrayed in the first direction, with a number of the first portions disposed between adjacent ones of the exposed portions being two or more, and a plurality of second portions not located between the exposed portions in the first direction, and arrayed in the first direction. Each of the second portions is different in shape or size from each of the first portions.
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Patent Agency Ranking
公开(公告)号：US20210231293A1
公开(公告)日：2021-07-29
申请号：US17228466
申请日：2021-04-12
Applicant: NICHIA CORPORATION
Inventor： Makiko IWASA , Yuji SATO , Hiroki FUKUTA
Abstract: A light emitting device includes: a light emitting element having a dominant wavelength in a range greater than or equal to 380 nm and less than or equal to 470 nm; a wavelength conversion member that is disposed on the light emitting element and includes: a translucent member, and a first fluorescent material layer interposed between the light emitting element and the translucent material, the first fluorescent material layer comprising a resin that contains a first fluorescent material, and the first fluorescent material comprising at least one compound selected from (Ca, Sr)AlSiN3: Eu and (Ca, Sr, Ba)2Si5N8: Eu; and a covering member that covers sides of the wavelength conversion member and surrounds the light emitting element, the covering member comprising light reflecting material and a second fluorescent material, and the second fluorescent material comprising at least one compound selected from (Ca, Sr)AlSiN3: Eu and (Ca, Sr, Ba)2Si5N8: Eu.
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公开(公告)号：US20230420435A1
公开(公告)日：2023-12-28
申请号：US18463290
申请日：2023-09-08
Applicant: NICHIA CORPORATION
Inventor： Kenji OZEKI , Hiroki FUKUTA
CPC classification number: H01L25/167 , H01L33/505 , H01L33/56 , H01L33/52 , H01L24/26 , H01L24/73 , H01L24/96 , H01L24/97 , H01L33/54 , H01L33/58 , H01L33/60 , H01L2224/92225 , H01L2224/32225 , H01L2924/19105 , H01L2224/97 , H01L2933/0041 , H01L33/0095
Abstract: A method that includes providing a substrate having first and second regions for forming first and second light emitting devices, respectively, that are axisymmetrical in plan view with respect to a boundary line extending between the regions. The method includes mounting first and second light emitting elements in the first and second regions, respectively, arranging first and second light transmissive members respectively thereon, and arranging a covering member to collectively cover at least a portion of the first and second light emitting devices. The first and second devices have external connection terminals that are exposed. The terminals of the first light emitting device are on a side of the first light emitting device opposite to a side thereof adjacent the boundary line, and the terminals of the second light emitting device are on a side thereof opposite to a side of the second light emitting device adjacent the boundary line.
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公开(公告)号：US20230204192A1
公开(公告)日：2023-06-29
申请号：US18068175
申请日：2022-12-19
Applicant: NICHIA CORPORATION
Inventor： Yusuke HAYASHI , Satoshi SHICHIJO , Hiroki FUKUTA
Abstract: A light emitting device includes: a light emitting element configured to emit first light; a first wavelength conversion member disposed on the light emitting element and having a lower surface bonded to the light emitting element, an upper surface, and a lateral surface that meets the upper surface, the first wavelength conversion member being configured to emit second light when excited by the first light; a second wavelength conversion member covering the lateral surface of the first wavelength conversion member without covering the upper surface of the first wavelength conversion member, the second wavelength conversion member having an oblique surface extending outward from the lateral surface of the first wavelength conversion member, the second wavelength conversion member being configured to emit third light when excited by at least one of the first light and the second light; and a first light reflecting member covering the oblique surface.
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公开(公告)号：US20200309346A1
公开(公告)日：2020-10-01
申请号：US16831191
申请日：2020-03-26
Applicant: NICHIA CORPORATION
Inventor： Makiko IWASA , Yuji SATO , Hiroki FUKUTA
IPC: F21V9/30
Abstract: A light emitting device has a covering member. The covering member includes light reflecting material and a second fluorescent material, and a dominant wavelength of an emission spectrum of the second fluorescent material differs from a dominant wavelength of an emission spectrum of the light emitting device by 30 nm or less. The light emitting device emits light with chromaticity that is within a four-sided region on a CIE 1931 chromaticity diagram, where chromaticity coordinates (x, y) are (0.645, 0.335) at a first point, (0.665, 0.335) at a second point, (0.735, 0.265) at a third point, (0.721, 0.259) at a fourth point, and a first line joins the first and second points, a second line joins the second and third points, a third line joins the third and fourth points, and a fourth line joins the fourth and first points to define the four-sided region of the chromaticity diagram.
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10.发明申请公开(公告)号：US20200212278A1
公开(公告)日：2020-07-02
申请号：US16717305
申请日：2019-12-17
Applicant: NICHIA CORPORATION
Inventor： Koichi TAKENAGA , Takanori FUKUMORI , Satoshi SHICHIJO , Hiroki FUKUTA , Kunihito SUGIMOTO
IPC: H01L33/62 , H01L33/32 , H01L33/44 , H01L33/38 , H01L33/60 , H01L33/00 , H01L27/15 , H01L33/22 , H01L33/56 , H01L33/40 , H01L33/64
Abstract: A light emitting element includes a semiconductor stacked body, an insulating film, first and second electrodes, a second external connection portion, and first external connection portions. The first semiconductor layer is exposed at a plurality of exposed portions disposed in a plurality of rows in plan view. The first external connection portions include at least one smaller-size first external connection portion disposed between adjacent ones of the rows other than the outermost one of the rows, and at least one larger-size first external connection portion extending from the end region, in which a spacing between a first outer edge of a second semiconductor layer and the exposed portions in the outermost one of the rows is narrower than a spacing between the exposed portions in adjacent ones of the rows, to at least a position between the outermost one of the rows and an adjacent one of the rows.
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