Abstract: A light-emitting device includes a mounting area that includes a first end and a second end opposite to the first end, a first electrode group disposed adjacent to the first end of the mounting area, a second electrode group disposed adjacent to the second end of the mounting area, a plurality of files each in that a plurality of light-emitting elements are arranged in the mounting area to extend from a vicinity of the first end of the light-emitting area to a vicinity of the second end of the mounting area and electrically connected in series with each other of the light-emitting elements in each file. Light-emitting elements included in two or more files can be a light-emitting block to be lighted together through electrodes of the first electrode group and the second electrode group.

Abstract: A light-emitting element according to an embodiment of the present invention includes a body including an upper surface, a lower surface opposite to the upper surface, and a peripheral side surface extending between peripheral edges of the upper surface and peripheral edges of the lower surface, the peripheral side surface including a front surface and a rear surface opposite to the front surface; a pair of element electrodes as a first element electrode and a second element electrode positioned at the rear surface of the body; and a support disposed at the rear surface of the body between the first element electrode and the second element electrode that are positioned at a lower area of the rear surface of the body.

Abstract: A light-emitting device includes a light-emitting element with a pair of element electrodes as a first element electrode and a second element electrode positioned at the lower surface of the light-emitting element; a phosphor plate disposed on the upper surface of the light-emitting element; a first resin covering the lower surface and the peripheral side surface of the light-emitting element with the first element electrode and the second element electrode partly appearing from the first resin; and a second resin provided in the phosphor plate.

Abstract: A light-emitting device includes a rectangular substrate, a through-holes that is in a shape of a quarter of circle provided in two corners or four corners of the substrate, a pair of electrodes provided along short sides of the substrate and electrically connected to the through-hole(s) that is adjacently disposed to each of the electrodes. Each of the through-holes is covered by a cover that is in a shape of a quarter of circle.

Abstract: A planar light-emitting device enabling reduction in the deflection of a sheet-shaped light-diffusing element includes a reflector having an upper surface serving as a light-reflecting surface, a partition provided on the reflector to extend upward to form a plurality of enclosed spaces over the upper surface of the reflector, light sources disposed in the enclosed spaces, respectively, and at least one sheet-shaped light-diffusing element supported on the upper edges of the partition to transmit and diffuse light from the light sources upward. The side surfaces of the partition that define the enclosed spaces are light-reflecting surfaces.

Abstract: A planar light-emitting device having a plurality of light units each including a light source and a lightguide member that guides light received from the light source through an end surface serving as a light-entrance surface disposed to face the light source and that emits the light from an upper surface and two mutually opposing side surfaces after changing the optical path of the light, and further has a reflecting member having a light-reflecting surface on which the light units are disposed. The lightguide member has an elongated shape. The light units are disposed in linear arrays each in which the light units are linearly disposed in series in the elongated direction of the lightguide member. The linear arrays extend in the elongated direction of the respective lightguide members. The linear arrays extend in parallel with each other and are spaced from each other in a width direction perpendicularly intersecting the elongated direction of the lightguide members.

Abstract: A layered substrate includes a first substrate including an upper surface, a lower surface, a peripheral surface between peripheral edges of the upper surface and the lower surface, and a cut portion cut into the peripheral surface and passing through the upper surface and the lower surface, and a second substrate including an upper surface, a lower surface, and a peripheral surface between peripheral edges of the upper surface and the lower surface, and the lower surface of the second substrate layered on the upper surface of the first substrate and closing the cut portion of the first substrate from above. The second substrate includes a heat conductor that is thermally connected to an element to be mounted on the upper surface of the second substrate, the heat conductor configured to thermally extend to the cut portion of the first substrate.

Abstract: Provided is a light-emitting device that aims not to affect a service life and characteristics of light emission by releasing heat from a substrate on that a plurality of LED elements mounted, and the LED elements generate the heat. A light-emitting device includes: a first electrode and a second electrode formed on the upper surface of a substrate with a gap between the first electrode and the second electrode, the gap being provided at a central portion of the upper surface of the substrate; at least one first light-emitting diode element mounted on the first electrode; and at least one second light-emitting diode element mounted on the second electrode. The first light-emitting diode element includes a pair of element electrodes on an upper surface of the first light-emitting diode element and the second light-emitting diode element includes a pair of element electrodes on an upper surface of the second light-emitting diode element.

Abstract: A planar light-emitting device enabling more precise local dimming has a plurality of light-emitting units each including a lightguide plate and a plurality of light sources disposed successively in the lateral width direction of the light-entrance surface and adjacently facing a light-entrance surface of the lightguide plate to emit light into the lightguide plate through the light-entrance surface. The light sources are divided into a plurality of groups successively arranged in the width direction, each group including at least one light source. The lightguide plates of the light-emitting units are mutually adjacently disposed with their light-exiting surfaces being flush with each other. The planar light-emitting device has a light source output control unit that controls the outputs of the light sources for each group.

Abstract: In a lighting device, a first LED is formed by sealing a blue LED element by a first resin, the first resin having a first phosphor included in the first resin so as to raise a correlation color temperature of an emitted light color; and a second LED is formed by sealing a blue LED element by a second resin, the second resin having a second phosphor included in the second resin so as to lower a correlation color temperature of an emitted light color. The lighting device emits light from white light of a color having a first correlation color temperature to white light of a color having a second correlation color temperature, and the first correlation color temperature is higher than the second correlation color temperature. Consequently, various tones of white light can be more easily adjusted and controlled over a long period.

Abstract: A light-emitting device includes a circuit substrate including at least a pair of electrodes, an LED element electrically mounted on the circuit substrate, a phosphor plate disposed on an upper surface of the LED element, a diffuser plate disposed on an upper surface of the phosphor plate, and a white resin disposed on an upper surface of the circuit substrate and covering a peripheral side surface of the LED element, a peripheral side surface of the phosphor plate, and a peripheral side surface of the diffuser plate. The present invention makes it possible to obtain a planar light-emitting surface even with a plurality of LEDs, and also, a problem of color-ring occurrence caused by a phosphor may be less represented.

Abstract: A light-emitting device includes a substrate that includes at least a pair of electrodes, an LED element electrically mounted on the substrate, a phosphor plate adhered to an upper surface of the LED element and including an upper surface and a lower surface each having an area larger than that of the upper surface of the LED element, a white resin provided on an upper surface of the substrate and seamlessly covering a peripheral side surface of the LED element and a peripheral side surface of the phosphor plate. A lower surface of the phosphor plate is adhered to the upper surface of the LED element through a transparent adhesive.

Abstract: A mounting board including a pair of patterned electrodes, a lower surface and an upper surface opposed thereto on which a substrate of an electronic component is to be mounted, a pass-through hole penetrating through the upper surface and the lower surface, and a peripheral side surface that defines the pass-through hole. The pass-through hole includes a plurality of penetrating grooves that are cut into the mounting board and penetrate through the upper and lower surfaces. The plurality of penetrating grooves electrically split the pair of patterned electrodes. The pair of patterned electrodes is partly positioned inside the peripheral side surface, and a connection portion connecting the at least one pair of patterned electrodes and at least one pair of patterned electrodes provided on the upper surface of the substrate of the electronic component is to be disposed inside the peripheral side surface that defines the pass-through hole.

Abstract: It is an object to produce a thin light-emitting device in an extremely simple method that does not include a substrate on which a light-emitting element is to be mounted.

Abstract: A planar light-emitting device includes a first reflecting surface, a rectangular support disposed adjacent to the first reflecting surface, light sources each including a light-emitting surface and disposed along, at least one side portion of the rectangular support, and a lens including a light-receiving surface disposed to face the light-emitting surfaces of the light sources, and configured to introduce light emitted from the light sources into a space that is demarcated by at least the first reflecting surface and the rectangular support.