Abstract: A light emitting module includes at least one light source, a light guide member having a demarcating groove configured to demarcate at least one light emitting region, and at least one light source arrangement part located in each of the at least one light emitting region and accommodating a light source, a first light-reflecting member disposed in the demarcating groove, and a wavelength converting member covering an upper surface of the light guide 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: In order to obtain a light emitting module with a less unevenness of luminance, provided is a method for manufacturing a light emitting module comprising: preparing a light emitter and a light-transmissive light guide plate, the light emitter comprising a light emitting element, the light guide plate having a first main surface serving as a light emitting surface from which light is emitted outside and a second main surface located opposite to the first main surface and having a concave portion, the concave portion comprising a side surface and a bottom surface that is smaller than an opening of the concave portion in a cross-sectional view; fixing the light emitter to the bottom surface of the concave portion via a bonding member; and forming a wiring at an electrode of the light emitting element.

Abstract: According to one embodiment, a constant voltage circuit includes: a first gain stage configured to output a first voltage amplified based on an output voltage and a reference voltage; a first transistor configured to control the output voltage based on the first voltage; a second transistor configured to control a current that flows through the first gain stage; a first circuit configured to convert an amount of fluctuation in the output voltage into a first current; and a second circuit configured to control a gate voltage of the second transistor based on the first current. A third current or a fourth current greater than the third current flows through the first gain stage based on the gate voltage of the second transistor.

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 method for manufacturing a light-emitting device includes providing a transparent member having a protrusion formed at an upper surface of the transparent member. A first resin portion is placed on the protrusion in which the first resin portion has a solid form and is made from a first resin material of which the viscosity decreases when heated. A light-emitting element is placed on the first resin portion, the light-emitting element is caused to be self-aligned with respect to the protrusion by reducing a viscosity of the first resin portion by heating to a first temperature. The first resin portion is solidified by cooling.

Abstract: A light emitting module including: a light guide member including: an emission region defined by a sectioning groove, a light source placement part located in the emission region, and a light adjusting hole; and a light source disposed in the light source placement part. In the schematic top view: the light adjusting hole is not positioned on a first straight line connecting (i) a center of the light source and (ii) a point in the sectioning groove that is farthest from the center of the light source, and a first lateral face of the light adjusting hole has a first region, and a line normal to the first region is oblique to a second straight line connecting (i) the center of the light source and (ii) a point in the sectioning groove that is closest to the center of the light source.

Abstract: A method of manufacturing a planar light source includes: providing a wiring substrate including: an insulating layer defining a first through-hole and a second through-hole that are separated from each other, and a first wiring layer and a second wiring layer that are disposed below the insulating layer, wherein the first wiring layer is separated from the first through-hole and the second wiring layer is separated from the second through-hole, and wherein, in a top plan view, the first wiring layer and the second wiring layer are arranged at two opposite sides with respect to the first through-hole and the second through-hole; disposing a light guide member and a light source above the wiring substrate; and forming (i) a first wiring member that fills the first through-hole, and (ii) a second wiring member that is separated from the first wiring member and fills the second through-hole.

Abstract: A method for manufacturing a light-emitting device includes providing a transparent member having a protrusion formed at an upper surface of the transparent member. A first resin portion is placed on the protrusion in which the first resin portion has a solid form and is made from a first resin material of which the viscosity decreases when heated. A light-emitting element is placed on the first resin portion, the light-emitting element is caused to be self-aligned with respect to the protrusion by reducing a viscosity of the first resin portion by heating to a first temperature. The first resin portion is solidified by cooling.

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 module including: a light guide member including: an emission region defined by a sectioning groove, a light source placement part located in the emission region, and a light adjusting hole; and a light source disposed in the light source placement part. In the schematic top view: the light adjusting hole is not positioned on a first straight line connecting (i) a center of the light source and (ii) a point in the sectioning groove that is farthest from the center of the light source, and a first lateral face of the light adjusting hole has a first region, and a line normal to the first region is oblique to a second straight line connecting (i) the center of the light source and (ii) a point in the sectioning groove that is closest to the center of the light source.

Abstract: A planar light source includes a wiring substrate including an insulating layer comprising a first through-hole, a second through-hole, a first wiring layer, and a second wiring layer; a light source including a first electrode and a second electrode, a light guide member; a first wiring member including a first portion filling the first through-hole and electrically connected to the first electrode and a second portion disposed below the insulating layer, continuous with the first portion, and in contact with the first wiring layer; and a second wiring member including a third portion filling the second through-hole and electrically connected to the second electrode and a fourth portion disposed below the insulating layer, continuous with the third portion, and in contact with the second wiring layer. The first and second wiring layers are arranged at opposite sides of the first and second through-holes in a top plan view.

Abstract: A light emitting module includes at least one light source, a light guide member having a demarcating groove configured to demarcate at least one light emitting region, and at least one light source arrangement part located in each of the at least one light emitting region and accommodating a light source, a first light-reflecting member disposed in the demarcating groove, and a wavelength converting member covering an upper surface of the light guide member.

Abstract: The light emitting device includes a light emitting element having an electrode-formed surface on which electrode posts are formed; a covering member covering the electrode-formed surface and lateral surfaces of the light emitting element while forming an exposure portion of each of the electrode posts which are exposed from the covering member; a pair of electrode layers provided on a surface of the covering member and electrically connected to the exposed portions of the electrode posts; and a pair of electrode terminals which are respectively electrically connected to the electrode layers, having a surface area larger than a surface area of the electrode posts, and having an outer edge positioned at an end portion of the covering member; and an insulating member provided between the pair of the electrode terminals while being in contact with lateral surfaces of the pair of electrode terminals.

Abstract: A light-emitting device includes: a structure including: a layered body including: a light-emitting element comprising a pair of electrodes, and a light-transmissive member disposed on the light-emitting element; and a light-reflective member covering lateral surfaces of the layered body, in which structure has a first surface at which the pair of electrodes are exposed from the light-reflective member, and a second surface connected to the first surface, the second surface being a surface of the light-reflective member. A pair of first electrically conductive films disposed on the first surface of the structure such that each of the pair of first electrically conductive films is connected to a respective one of the pair of electrodes. A pair of second electrically conductive films disposed on the second surface of the structure, each of the pair of electrically conductive films being continuous with the pair of first electrically conductive films.

Abstract: A light emitting module includes: a light guide member including: an emission region defined by a sectioning groove, a light source placement part located in the emission region, and a light adjusting hole that, in a schematic top view, is located between the sectioning groove and the light source placement part; and a light source located in the light source placement part. A refractive index of an inside of the light adjusting hole is lower than a refractive index of the light guide member. In the schematic top view, the light adjusting hole is not positioned on a first straight line connecting a center of the light source and a farthest point in the sectioning groove, the farthest point being farthest from the center of the light source.

Abstract: A light emitting module includes at least one light source, a light guide member having a demarcating groove configured to demarcate at least one light emitting region, and at least one light source arrangement part located in each of the at least one light emitting region and accommodating a light source, a first light-reflecting member disposed in the demarcating groove, and a wavelength converting member covering an upper surface of the light guide member.

Abstract: A method of manufacturing a light-emitting device includes: providing an intermediate structure including: layered bodies in a light-reflective member, a semiconductor layered body, and a light-transmissive member; forming at least one first groove at a first surface of the intermediate structure; forming at least one electrically conductive film, each disposed on the first surface and inside a respective one of the at least one first groove; exposing a portion of the light-reflective member in an inter-electrode region; forming a hole having a width equal to or greater than a width of the at least one first groove and having a depth equal to or greater than a depth of the at least one first groove; and cutting the light-reflective member and the at least one electrically conductive film along the at least one first groove to obtain a plurality of light-emitting devices.

Abstract: A light emitting device includes a light emitting element, a light guide member, a reflecting member, a wavelength conversion member. The light emitting element has a light emitting surface and lateral surfaces. The light guiding member is provided on at least a portion of the lateral surfaces of the light emitting element. The reflecting member is provided on the lateral surface of the light emitting element with the light guiding member interposed therebetween. The wavelength conversion member is provided on the light emitting surface of the light emitting element, the light guiding member and the reflecting member. The wavelength conversion member is provided with a recess between an outer lateral surface of the wavelength conversion member and the light guiding member. The reflecting member is provided in the recess.

Abstract: A light-emitting device includes a support member that includes a wiring layer comprising a connection portion, and a hole portion; a light source located on a first surface of the support member, the light source including a positive electrode and a negative electrode; and a conductive member located in the hole portion, the conductive member connecting the connection portion and one of the positive electrode or the negative electrode. The hole portion includes a first hole portion, and a second hole portion communicating with the first hole portion. The first hole portion overlaps said one of the positive electrode or the negative electrode that is connected with the conductive member in a plan view. The second hole portion includes a first portion overlapping the first hole portion in a plan view, and a second portion extending in a first direction from the first portion toward a connection portion side.