According to one embodiment of the present invention, the light emitting device includes an LED element, a side wall which surrounds the LED element, a phosphor layer which is fixed to the side wall with an adhesive layer therebetween, and is positioned above the LED element, and a metal pad as a heat dissipating member. The side wall includes an insulating base which surrounds the LED element and a metal layer which is formed on a side surface at the LED element side of the base, and is in contact with the metal pad and the adhesive layer. The adhesive layer includes a resin layer that includes a resin containing particles which have higher thermal conductivity than the resin or a layer that includes solder.

A conversion element, a component and a method for producing the component are disclosed. In an embodiment the conversion element includes a phosphor configured to convert electromagnetic primary radiation into electromagnetic secondary radiation and a glass composition as matrix material in which the phosphor is embedded. The glass composition has the following chemical composition: at least one tellurium oxide with a proportion of 65 mole % as a minimum and 90 mole % as a maximum, R.sup.1O with a proportion of between 0 mole % and 20 mole %, at least one M.sup.1.sub.2O with a proportion of between 5 mole % and 25 mole %, at least one R.sup.2.sub.2O.sub.3 with a proportion of between 1 mole % and 3 mole %, M.sup.2O.sub.2 with a proportion of between 0 mole % and 2 mole %, and R.sup.3.sub.2O.sub.5 with a proportion of between 0 mole % and 6 mole %.

A light source using a wavelength conversion member is increased in brightness. A wavelength conversion element 11 includes a plurality of wavelength conversion members 12 bundled together, each containing a dispersion medium and phosphor powder dispersed in the dispersion medium.

The present invention is directed to provide a hydrophobized phosphor not susceptible to separation at the interface with sealing resins and, by using this hydrophobized phosphor, a light-emitting device having excellent long-term stability and little change in luminance and emission color over time. The hydrophobized phosphor is characterized in that it comprises phosphor particles represented by the general formula Si.sub.6zAl.sub.zO.sub.zN.sub.8z:Eu.sup.2+ (where z is larger than 0 and no more than 4.2); and a surface layer consisting of a hydrophobic substance deposited on the surfaces of the phosphor particles; wherein the hydrophobic substance consists of a long-chain fatty acid having 12 or more carbon atoms, a silicone oil having a viscosity of 1.5 Pa.Math.s or less, or a combination thereof. The light-emitting device is characterized in that it comprises the hydrophobized phosphor and a light-emitting element.

A quantum dot-polymer micronized composite includes a first polymer matrix; a plurality of quantum dots dispersed in the first polymer matrix; and at least one of an additive selected from a clay particle embedded in the first polymer matrix and a metal halide dispersed in the first polymer matrix, wherein the quantum dot-polymer micronized composite has an average particle size of less than or equal to about 100 micrometers, a production method thereof, and an article and an electronic device including the micronized composite are provided.

A display may be provided with light sources. The light sources may include light emitting diodes. The light sources may have packages formed from package bodies to which the light-emitting diodes are mounted. Layers such as quantum dot layers, light-scattering layers, spacer layers, and diffusion barrier layers may be formed over the package bodies and light-emitting diodes. Quantum dots of different colors may be stacked on top of each other. A getter may be incorporated into one or more of the layers to getter oxygen and water. Quantum dots may be formed from semiconductor layers that are doped with n-type and p-type dopant to adjust the locations of their conduction and valance bands and thereby enhanced quantum dot performance.

A phosphor containing particle includes a semiconductor nanoparticle phosphor and a matrix including a constitutional unit derived from an ionic liquid, the semiconductor nanoparticle phosphor being dispersed in the matrix. A light emitting device comprises a light source and a wavelength converter in which the phosphor containing particle of the present invention is dispersed in a translucent medium. A phosphor containing sheet in which the phosphor containing particle of the present invention is dispersed in a sheet-like translucent medium.

The present invention relates to an Mn.sup.4+-activated complex fluoride phosphor with improved moisture resistance due to modification of the particle surface, and a light emitting element and light emitting device having excellent color rendering properties and stability due to the use of this phosphor. The phosphor of the present invention is characterized in that it is represented by the general formula: A.sub.2MF.sub.6:Mn.sup.4+, wherein element A is an alkali metal element comprising at least K, element M is one or more metal elements chosen from among Si, Ge, Sn, Ti, Zr and Hf, F is fluorine, and Mn is manganese, wherein the phosphor comprises a Ca-containing compound on a particle surface.

The present invention relates to an Mn.sup.4+-activated complex fluoride phosphor with improved moisture resistance due to modification of the particle surface, and a light emitting element and light emitting device having excellent color rendering properties and stability due to the use of this phosphor. The phosphor of the present invention is characterized in that it is represented by the general formula: A.sub.2MF.sub.6:Mn.sup.4+, wherein element A is an alkali metal element comprising at least K, element M is one or more metal elements chosen from among Si, Ge, Sn, Ti, Zr and Hf, F is fluorine, and Mn is manganese, wherein the phosphor comprises Ca in a concentration range of at least 20 ppm and at most 10,000 ppm or Cl in a concentration range of at least 20 ppm and at most 300 ppm.

Heavily phosphor loaded LED packages having higher stability and a method for increasing the stability of heavily phosphor loaded LED packages. A silicone overlayer is provided on the phosphor silicone blend layer.