Abstract: A planar light source includes a light guide member having a through hole, a light source, a first light adjusting member, a second light adjusting member, and a light transmissive member. The first light adjusting member having reflectivity and transmissivity with respect to light from the light source is disposed on or above an upper face of the light source in the through hole. The second light adjusting member having reflectivity and transmissivity with respect to the light from the light source is disposed above and apart from the first light adjusting member. The first light transmissive member having a higher transmissivity with respect to the light from the light source than the transmissivities of the first and second light adjusting members is disposed between the first light adjusting member and the second light adjusting member, and between a lateral face of the light source and the light guide member.

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 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 first light-emitting element, a second light-emitting element having a peak emission wavelength different from that of the first light-emitting element, a light-guide member covering a light extracting surface and lateral surfaces of the first light-emitting element and a light extracting surface and lateral surfaces of the second light-emitting element, and a wavelength conversion layer continuously covering the light extracting surface of each of the first and second light-emitting elements and disposed apart from each of the first and second light-emitting elements, and a first reflective member covering outer lateral surfaces of the light-guide member. An angle defined by an active layer of the first light-emitting element and an active layer of the second light-emitting element is less than 180° at a wavelength conversion layer side.

Abstract: A light-emitting device includes a substrate comprising a base member, a first wiring, a second wiring, and a via hole; at least one light-emitting element electrically connected to and disposed on the first wiring; and a covering member having light reflectivity and covering a lateral surface of the light-emitting element and a front surface of the substrate. The base member defines a plurality of depressed portions separated from the via hole in a front view and opening on a back surface and a bottom surface of the base member. The substrate includes a third wiring covering at least one of inner walls of the plurality of depressed portions and electrically connected to the second wiring. A depth of each of the plurality of depressed portions defined from the back surface toward the front surface is larger on a bottom surface side than on an upper surface side of the base 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 including a molded package having leads including a pair of a first lead and a second lead, a molded resin, and a recess, where an upper surface of the leads is partially exposed from a bottom surface of the recess. The device further including a light emitting component mounted on the bottom surface, and at least one sealing member located in the recess to cover the light emitting component. At least one of the first lead and the second lead has a groove on an upper surface thereof, where the groove is positioned so as to correspond to a corner on the bottom surface of the recess in a cross sectional view. A portion of the molded resin located within the groove is exposed from the bottom surface. A surface of the corner is composed of a curved surface, and the sealing member covers the corner.

Abstract: The multilayer coating film formation method for forming a multilayer coating film on a substrate comprises the steps of: applying an undercoat paint composition (X) comprising an antioxidant (a1) to a substrate to form at least one layer of an uncured first coating film; applying a topcoat paint composition (Y) containing a carboxy-containing polymer (b1) and an epoxy-containing acrylic resin (b2) to the first coating film to form an uncured second coating film; and simultaneously heating the uncured first coating film and the uncured second coating film to cure the films.

Abstract: A light-emitting module includes a light guide plate including a first surface, and a second surface opposite to the first surface; a light-emitting device disposed at a second surface side of the light guide plate; a first light-reflective member provided at a periphery of the light-emitting device at the second surface side; and a second light-reflective member provided outward of the first light-reflective member at the second surface. A diffuse reflectance of the first light-reflective member for light emitted by the light-emitting device is greater than a diffuse reflectance of the second light-reflective member for the light emitted by the light-emitting device.

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: This invention relates to a paint composition comprising (A) a binder component and (B) a rheology control agent, the binder component (A) comprising an alkoxysilyl-containing acrylic resin (A1) and the rheology control agent (B) comprising a reaction product of (b1) a polyisocyanate compound, (b2) a primary monoamine having a number average molecular weight of 300 or less, and (b3) a polyether amine having a number average molecular weight of more than 300 but less than 6000.

Abstract: A light emitting device includes a first light emitting element including a rectangular first light extraction surface, a second light emitting element including a rectangular second light extraction surface and emitting light having an emission peak wavelength different from an emission peak wavelength of the first light emitting element, and a light-transmissive member covering the first light extraction surface and the second light extraction surface. The light-transmissive member includes a first light-transmissive layer facing the first light extraction surface and the second light extraction surface, a wavelength conversion layer located on the first light-transmissive layer, and a second light-transmissive layer located on the wavelength conversion layer. The first light-transmissive layer contains a first matrix and first diffusive particles. The wavelength conversion layer contains a second matrix and wavelength conversion particles.

Abstract: A light-emitting unit includes: a wiring board; a plurality of light-emitting elements provided on the wiring board and electrically coupled with a wire layer of the wiring board; a light reflecting member provided on the wiring board, the light reflecting member covering a lateral surface of each of the plurality of light-emitting elements; a light diffusing layer covering the plurality of light-emitting elements and the light reflecting member; a wavelength conversion layer located on or above the light diffusing layer; and a plurality of light reflecting layers located between the light diffusing layer and the wavelength conversion layer, each of the light reflecting layers being located above a corresponding one of the plurality of light-emitting elements. An upper surface of the light reflecting member has a recess which includes at least one concave surface, and there is a space between the concave surface and the light diffusing layer.

Abstract: A light-emitting unit includes: a wiring board; light-emitting elements on the wiring board; a light reflecting member on the wiring board, the light reflecting member covering a lateral surface of each of the light-emitting elements; wavelength conversion layers each provided on or above an emission surface of a corresponding one of the plurality of light-emitting elements; light reflecting layers on the wavelength conversion layers, respectively; and a protecting layer configured to transmit light and provided on the light reflecting member. The light-transmitting protecting layer covers at least a lateral surface of the wavelength conversion layers and at least a lateral surfaces of the light reflecting layers. An upper surface of the protecting layer has a first recess in a region where the plurality of light reflecting layers are not present in a top view. The first recess includes at least one concave surface.

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 substrate, a light emitting element, a light transmissive member and a sealing member. The substrate includes an insulating base material, connection terminals, and external connection sections. The insulating base material has a first main surface, a second main surface, and a mounting surface. The connection terminals are disposed on the first main surface. The external connection sections are disposed on the second main surface. Each of the external connection sections has a narrow-width region and a wide-width region. The light emitting element has a pair of electrodes connected 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. The sealing member covers at least a part of a side surface of the light emitting element and at least a part of the light transmissive member.

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 comprising a base member, a first wiring, a second wiring, and a via hole; at least one light-emitting element electrically connected to and disposed on the first wiring; and a covering member having light reflectivity and covering a lateral surface of the light-emitting element and a front surface of the substrate. The base member defines a plurality of depressed portions separated from the via hole in a front view and opening on a back surface and a bottom surface of the base member. The substrate includes a third wiring covering at least one of inner walls of the plurality of depressed portions and electrically connected to the second wiring. A depth of each of the plurality of depressed portions defined from the back surface toward the front surface is larger on a bottom surface side than on an upper surface side of the base member.

Abstract: A light emitting device includes a first light emitting element including a rectangular first light extraction surface, a second light emitting element including a rectangular second light extraction surface and emitting light having an emission peak wavelength different from an emission peak wavelength of the first light emitting element, and a light-transmissive member covering the first light extraction surface and the second light extraction surface. The light-transmissive member includes a first light-transmissive layer facing the first light extraction surface and the second light extraction surface, a wavelength conversion layer located on the first light-transmissive layer, and a second light-transmissive layer located on the wavelength conversion layer. The first light-transmissive layer contains a first matrix and first diffusive particles. The wavelength conversion layer contains a second matrix and wavelength conversion particles.

Abstract: A light emitting device includes a substrate, a light emitting element, a light transmissive member and a sealing member. The substrate includes an insulating base material, connection terminals, and external connection sections. The insulating base material has a first main surface, a second main surface, and a mounting surface. The connection terminals are disposed on the first main surface. The external connection sections are disposed on the second main surface. Each of the external connection sections has a narrow-width region and a wide-width region. The light emitting element has a pair of electrodes connected 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. The sealing member covers at least a part of a side surface of the light emitting element and at least a part of the light transmissive member.