Abstract: A wavelength converting member comprising a first wavelength converting layer containing: a first fluorescent material having a light emission peak wavelength in a range of 620 nm or more and 660 nm or less; a second fluorescent material having a light emission peak wavelength in a range of 510 nm or more and 560 nm or less; and a resin, wherein the average particle diameter, as measured according to a Fisher Sub-Sieve Sizer method, of the first fluorescent material is in a range of 2 ?m or more and 30 ?m or less, wherein the second fluorescent material comprises a ?-SiAlON fluorescent material, the circularity of the ?-SiAlON fluorescent material is 0.7 or more, and the volume average particle diameter, as measured according to a laser diffraction scattering particle size distribution measuring method, of the ?-SiAlON fluorescent material is in a range of 2 ?m or more and 30 ?m or less, and wherein the thickness of the first wavelength converting layer is in a range of 50 ?m or more and 200 ?m or less.

Abstract: A light emitting device includes: a substrate including a base member including an upper surface, a lower surface and one or more lateral surfaces, and defining a recess that is opened at the upper surface and the lateral surfaces and surrounds an outer perimeter of the upper surface; a first light emitting element; a second light emitting element; a light guide member covering the first and the second light emitting elements and the upper surface of the base member; and a first reflective member having a closed-ring shape surrounding the upper surface of the base member and the light guide member, a portion of the first reflective member being located in the recess. At least one of the lateral surfaces of the base member and corresponding at least one of one or more outer lateral surfaces of the first reflective member are in the same plane.

Abstract: A light emitting device includes a light emitting element including a first surface; a light guide member covering at least a part of a lateral surface of the light emitting element; a first wavelength conversion member covering the first surface and including a first wavelength conversion particles; and a reflective member being in contact with the light emitting element. The first wavelength conversion member has a thickness of 60 ?m or more and 120 ?m or less. The first wavelength conversion particles have an average particle size of 4 ?m or longer and 12 ?m or smaller; the first wavelength conversion particles have a central particle size of 4 ?m or longer and 12 ?m or smaller. A weight ratio of the first wavelength conversion particles is 60% by weight or more and 75% by weight or less with respect to the total weight of the first wavelength conversion member.

Abstract: A light emitting device includes a substrate including a base member including a front surface, a rear surface opposite to the front surface, a bottom surface perpendicular to the front surface, and a top surface opposite to the bottom surface, a first wiring portion located on the front surface, and a second wiring portion located on the rear surface; a light emitting element electrically connected with the first wiring portion; and a first reflective member covering a lateral surface of the light emitting element and the front surface of the base member. The base member has a recessed portion opened on the rear surface and the bottom surface. The substrate includes a third wiring portion covering an inner wall of the recessed portion and electrically connected with the second wiring portion, and a via in contact with the first wiring portion, the second wiring portion and the third wiring portion.

Abstract: A light emitting device is provided. The light emitting device includes a light emitting element, which emits blue light, and a light transmissive member having a first principal face bonded to the light emitting element and a second principal face opposite the first principal face. The light transmissive member has a light transmissive base material and wavelength conversion substances, which are contained in the base material and which absorb the light from the light emitting element and emit light. The wavelength conversion substances are localized in the base material towards the first principal face, and include a first phosphor which emits green to yellow light and a second phosphor which emits red light. The first phosphor is more localized towards the first principal face than the second phosphor. The second phosphor is a manganese-activated fluoride phosphor.

Abstract: A light-emitting device includes a substrate including a base member having an upper surface having a substantially rectangular shape, a lower surface opposite to the upper surface, a first longer lateral surface, a second longer lateral surface opposite to the first longer lateral surface, a first shorter lateral surface, and a second shorter lateral surface opposite to the first shorter lateral surface, first wirings disposed on the upper surface, and second wirings disposed on the lower surface and each electrically connected with a respective one of the first wirings; at least one light-emitting element; and a light-reflective covering member covering lateral surfaces of the light-emitting element and the upper surface of the base member. The base member has at least one first recess open at the upper surface and the first longer lateral surface. Surfaces defining the at least one first recess are covered with the covering member.

Abstract: A light emitting device includes a substrate, a light emitting element and a light transmissive member. The substrate includes an insulating base material having a first main surface, a second main surface that is opposite from the first main surface, and a mounting surface that is adjacent to at least the second main surface, a pair of connection terminals disposed on the first main surface, a heat dissipation terminal disposed on the second main surface, and having a narrow part and a wide part with a width of the wide part being wider than a width of the narrow part, and a pair of vias connecting the connection terminals and the heat dissipation terminal. The light emitting element has a pair of electrodes which connect to element connection sections of the pair of connection terminals. The light transmissive member is disposed on an upper surface of the light emitting element.

Abstract: A light emitting device is provided. The light emitting device includes a light emitting element, which emits blue light, and a light transmissive member having a first principal face bonded to the light emitting element and a second principal face opposite the first principal face. The light transmissive member has a light transmissive base material and wavelength conversion substances, which are contained in the base material and which absorb the light from the light emitting element and emit light. The wavelength conversion substances are localized in the base material towards the first principal face, and include a first phosphor which emits green to yellow light and a second phosphor which emits red light. The first phosphor is more localized towards the first principal face than the second phosphor. The second phosphor is a manganese-activated fluoride phosphor.

Abstract: Alight emitting device includes a substrate including a base member including a front surface, a rear surface opposite to the front surface, a bottom surface perpendicular to the front surface, and a top surface opposite to the bottom surface, a first wiring portion located on the front surface, and a second wiring portion located on the rear surface; a light emitting element electrically connected with the first wiring portion; and a first reflective member covering a lateral surface of the light emitting element and the front surface of the base member. The base member has a recessed portion opened on the rear surface and the bottom surface. The substrate includes a third wiring portion covering an inner wall of the recessed portion and electrically connected with the second wiring portion, and a via in contact with the first wiring portion, the second wiring portion and the third wiring portion.

Abstract: A light-emitting device includes a substrate including a base member having an upper surface having a substantially rectangular shape, a lower surface opposite to the upper surface, a first longer lateral surface, a second longer lateral surface opposite to the first longer lateral surface, a first shorter lateral surface, and a second shorter lateral surface opposite to the first shorter lateral surface, first wirings disposed on the upper surface, and second wirings disposed on the lower surface and each electrically connected with a respective one of the first wirings; at least one light-emitting element; and a light-reflective covering member covering lateral surfaces of the light-emitting element and the upper surface of the base member. The base member has at least one first recess open at the upper surface and the first longer lateral surface. Surfaces defining the at least one first recess are covered with the covering member.

Abstract: Alight emitting device includes a substrate including a base member including a front surface, a rear surface opposite to the front surface, a bottom surface perpendicular to the front surface, and a top surface opposite to the bottom surface, a first wiring portion located on the front surface, and a second wiring portion located on the rear surface; a light emitting element electrically connected with the first wiring portion; and a first reflective member covering a lateral surface of the light emitting element and the front surface of the base member. The base member has a recessed portion opened on the rear surface and the bottom surface. The substrate includes a third wiring portion covering an inner wall of the recessed portion and electrically connected with the second wiring portion, and a via in contact with the first wiring portion, the second wiring portion and the third wiring portion.

Abstract: A wavelength converting member comprising a first wavelength converting layer containing: a first fluorescent material having a light emission peak wavelength in a range of 620 nm or more and 660 nm or less; a second fluorescent material having a light emission peak wavelength in a range of 510 nm or more and 560 nm or less; and a resin, wherein the average particle diameter, as measured according to a Fisher Sub-Sieve Sizer method, of the first fluorescent material is in a range of 2 ?m or more and 30 ?m or less, wherein the second fluorescent material comprises a ?-SiAlON fluorescent material, the circularity of the ?-SiAlON fluorescent material is 0.7 or more, and the volume average particle diameter, as measured according to a laser diffraction scattering particle size distribution measuring method, of the ?-SiAlON fluorescent material is in a range of 2 ?m or more and 30 ?m or less, and wherein the thickness of the first wavelength converting layer is in a range of 50 ?m or more and 200 ?m or less.

Abstract: A light emitting device includes: a light emitting element; a wavelength conversion member disposed on or above an upper surface of the light emitting element; a light-transmissive member disposed on an upper surface of the wavelength conversion member; and a light reflective member disposed on each side surface of the light emitting element, the wavelength conversion member, and the light-transmissive member, wherein an upper surface of the light reflective member is coplanar with an upper surface of the light-transmissive member, and wherein each of the upper surface of the light reflective member and the upper surface of the light-transmissive member is a cut surface.

Abstract: A method of manufacturing a substrate for a light emitting device includes: forming wiring to form a plurality of first wiring parts and second wiring parts on/above an upper surface of a base member; forming projection parts including a first projection part on each of the first wiring parts and a second projection part on each of the second wiring parts by forming a first metal film on a region including at least parts of the first wiring parts and the second wiring parts and etching the first metal film using a resist for forming projection part; and forming an alignment mark by forming a second metal film on the substrate and etching the second metal film using a resist, wherein the resist for forming the projection part and the resist for forming alignment mark are exposed to light in an identical step of exposing to light.

Abstract: The clear coat paint composition comprises (A) a carboxy-containing polymer, (B) an epoxy-containing acrylic resin, and (C) an antioxidant having a phenyl group and a sulfide bond.

Abstract: A light emitting device includes a substrate, a light emitting element and a light transmissive member. The substrate includes an insulating base material having a first main surface, a second main surface that is opposite from the first main surface, and a mounting surface that is adjacent to at least the second main surface, a pair of connection terminals disposed on the first main surface, a heat dissipation terminal disposed on the second main surface, and having a narrow part and a wide part with a width of the wide part being wider than a width of the narrow part, and a pair of vias connecting the connection terminals and the heat dissipation terminal. The light emitting element has a pair of electrodes which connect to element connection sections of the pair of connection terminals. The light transmissive member is disposed on an upper surface of the light emitting element.

Abstract: A light emitting device includes first and second light emitting elements, first and second color conversion material layers, a support member and a light reflective member. The first color conversion material layer has a first color conversion surface facing a first light extraction surface of the first light emitting element. The second color conversion material layer has a second color conversion surface facing a second light extraction surface of the second light emitting element. The support member supports the first and second color conversion material layers. The light reflective member covers a first side surface of the first light emitting element and a second side surface of the second light emitting element. At least a part of an upper surface of the light reflective member is positioned closer to the support member than the first color conversion material layer and the second color conversion material layer.

Abstract: A light-emitting device includes a substrate, a plurality of light-emitting elements aligned along a longitudinal direction, and a covering member. The substrate includes a pair of first depressed portions and a second depressed portion each opening on a back surface and a bottom surface of a base and positioned on both end sides of the base in the longitudinal direction. The second depressed portion has a width larger than a width of the first depressed portions as measured along a height direction. First metal films extend from inside the first depressed portions to the back surface. A second metal film extends from inside the second depressed portion to the back surface. A solder mask covers at least a part of each of the first metal films and at least a part of the second metal film on the back surface of the base.

Abstract: A light emitting device includes a substrate including first, second, third and fourth wiring portions on a top surface of a base member and arrayed in a first direction, and a connection wiring portion connecting the second and third wiring portions. The connection wiring portion includes first and second connection ends respectively connected with the second and third wiring portions, and a connection central portion connecting the first and second connection ends and having a maximum width in a second direction different from each of a maximum width of the first connection end and a maximum width of the second connection end. In the second direction, at least a part of the connection wiring portion has a width narrower than each of a maximum width of the second wiring portion and a maximum width of the third wiring portion.

Abstract: A wavelength converting member comprising a first wavelength converting layer containing: a first fluorescent material having a light emission peak wavelength in a range of 620 nm or more and 660 nm or less; a second fluorescent material having a light emission peak wavelength in a range of 510 nm or more and 560 nm or less; and a resin, wherein the average particle diameter, as measured according to a Fisher Sub-Sieve Sizer method, of the first fluorescent material is in a range of 2 ?m or more and 30 ?m or less, wherein the second fluorescent material comprises a ?-SiAlON fluorescent material, the circularity of the ?-SiAlON fluorescent material is 0.7 or more, and the volume average particle diameter, as measured according to a laser diffraction scattering particle size distribution measuring method, of the ?-SiAlON fluorescent material is in a range of 2 ?m or more and 30 ?m or less, and wherein the thickness of the first wavelength converting layer is in a range of 50 ?m or more and 200 ?m or less.