A light emitting device includes an LED having a (e.g., top) light output surface, a ceramic phosphor, and an adhesive layer positioned to attach the top of the LED to the ceramic phosphor. In one embodiment the adhesive layer is composed of multiple separate patches (regions) that define at least one channel therebetween, with the channel being open to an environment to permit oxygen permeation. The adhesive layer can be applied by a patternable dispensing system.

A LED package comprises an LED chip, a reflective structure which encloses the LED chip, a wavelength conversion structure placed on the LED chip, and an absorbing structure which encloses or is placed on the reflective structure.

A light-emitting module includes a substrate, at least one light-emitting element disposed on the substrate, at least one electronic component disposed on the substrate, a lens disposed apart from the at least one light-emitting element and the at least one electronic component to face the at least one light-emitting element and the at least one electronic component, and at least one plate-shaped covering member each disposed between the lens and a corresponding one of the at least one electronic component. The at least one covering member contains a coloring agent.

A light-emitting device according to the present invention comprises: a mounting board; a plurality of light-emitting elements that each include a supporting substrate and a semiconductor structure layer, the supporting substrate being disposed on the mounting board, and the semiconductor structure layer being formed on the supporting substrate and including a light-emitting layer, a wavelength conversion member that covers the plurality of light-emitting elements above the light-emitting elements and converts a wavelength of a light emitted from the light-emitting layer; a translucent member that covers a lower surface of the wavelength conversion member and covers the semiconductor structure layer on the supporting substrate; and a resin member filled between the plurality of light-emitting elements, the resin member being formed of a resin material containing particles having a light reflectivity. The translucent member includes a thin film portion having a constant film thickness between the wavelength conversion member and the resin member in a region between the plurality of light-emitting elements, and the constant film thickness is smaller than a distance between a top surface of the supporting substrate and a lower surface of the wavelength conversion member.

A wavelength conversion element includes a substrate, an adhesion layer and a wavelength conversion material. The substrate has a bearing surface having an adhesion zone. The adhesion zone has a central portion and two edge portions respectively on two sides of the central portion. The adhesion layer is disposed on the adhesion zone and includes a first adhesive and a second adhesive. The first adhesive is disposed at the edge portions. The second adhesive is disposed at the central portion. Operating temperature of the first adhesive is lower than operating temperature of the second adhesive. Viscosity of the first adhesive is larger than viscosity of the second adhesive. The wavelength conversion material is fixed on the bearing surface by the first adhesive and the second adhesive. A projection apparatus having the wavelength conversion element is provided, and the durability of the wavelength conversion element and the projection apparatus is improved.

A light source device includes: a mounting board; a plurality of light-emitting parts disposed on the mounting board, each of the plurality of light-emitting parts being configured to be individually turned on; a light-shielding member defining an opening; and a light-guide member supported by the light-shielding member, the light-guide member comprising a Fresnel lens portion, wherein, in a top view, the Fresnel lens portion is located within an area of the opening of the light-shielding member. In the top view, irradiation areas of the respective light-emitting parts are at least partially separated from each other.

A light-emitting device includes a light-emitting part. The light-emitting part contains a quantum dot. The quantum dot has a core and a shell. The shell is located outside the core. Each of the core and the shell has a hexagonal structure. The lattice constant of the core is larger than the lattice constant of the shell.

Described are luminescent components with excellent performance and stability. The luminescent components comprise a solid material composition comprising luminescent crystals 11 from the class of perovskite crystals, embedded in a solid matrix 14 comprising a polymer P1 or Small Molecules SM1 and metal selected from Mg, Sr, Ba, Sc, Y, Zn, Cd, In, and Sb. Further described are components and devices comprising the same. Also described are methods for manufacturing such components and devices comprising such components and liquid compositions useful for such manufacturing.

The invention relates to a phosphor with garnet structure and a light-emitting device comprising the phosphor, wherein the phosphor includes the following components in percentage by weight: 38.47-45.19% of Y element, 9.49-22.09% of Al element, 2.06-24.31% of Ga element, 27.3-32.04% of O element, 0.43-1.46% of Ce element. In the phosphor particles, the shortest distance from the surface of one side of the particle to the surface of the opposite side through the centroid of the particle is defined as R, the longest distance is R1, and 5 μm≤R≤40 μm; any distance from the particle surface to the centroid is r, and 0<r<½R; and the space with the distance from the particle surface to the centroid direction being less than or equal to r is defined as r.sub.inner.

A display apparatus including a circuit board, a plurality of light-emitting devices and a display panel is provided. The light-emitting devices are disposed on the circuit board and electrically connected to the circuit board. The display panel is disposed on the light-emitting devices. The display panel includes a peripheral light-shielding pattern. An opening portion of the peripheral light-shielding pattern defines an active area of the display panel. A physical portion of the peripheral light-shielding pattern defines a non-active area of the display panel. An optical axis of a light-emitting surface of at least one of the light-emitting devices is located at a junction of the active area and the non-active area, at the non-active area, or at the active area and a side wall of the at least one of the light-emitting devices is located at the junction of the active area and the non-active area.