A light emitting diode includes a substrate, a first semiconductor layer, an active layer, a second semiconductor layer, a first electrode, a second electrode and a carbon nanotube structure. The first semiconductor layer, the active layer, and the second semiconductor layer are stacked on the substrate. The first semiconductor layer is a stepped structure and has a first surface and a second surface lower than the first surface. The first electrode is located on and electrically connected to the second semiconductor layer. The carbon nanotube structure is located on the second surface of the first semiconductor layer and electrically connected to the first semiconductor layer. The second electrode is located on and electrically connected to the carbon nanotube structure.

A photosensitive resin composition according to an example embodiment of the present disclosure includes a quantum dot, a photopolymerizable compound, a photopolymerization initiator, an alkali-soluble resin, and a solvent, wherein the alkali-soluble resin includes at least one of a monomer represented by Formula 1 and a monomer represented by Formula 2:

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An LED driving device includes a converter module configured to receive an input voltage and generate an output voltage for driving a plurality of LEDs. A surge protection module is electrically connected to the converter module. A case holds the converter module and the surge protection module, and provides electrical coupling therebetween.

A display device includes: a display substrate; a light amount control layer on the display substrate; a first polarizer on the light amount control layer; and a color conversion layer on the first polarizer. The color conversion layer includes a phosphor, the phosphor includes a quantum dot, the quantum dot including: a core; a first shell surrounding the core; and a second shell surrounding the first shell, and the quantum dot has a diameter ranging from about 2 nm to about 32 nm.

The invention relates to a method for the synthesis of glutathione-capped cadmium-telluride (GSH-CdTe) quantum dots in an aqueous medium, including the steps of: a) preparing a precursor solution of cadmium in a citrate buffer; b) adding glutathione (GSH) to the preceding mixture via strong agitation; c) adding a telluride (potassium or sodium telluride) oxyanion as a telluride donor to the preceding mixture; d) allowing the preceding mixture to react; and e) stopping the reaction by incubation at low temperature.

The present invention includes formulations for use in preparing an optical material, optical materials, optical components and other products including optical materials, products including optical components, methods for improving various performance aspects of an optical material and optical components, and methods for purifying aliphatic methacrylate monomers and aliphatic dimethacrylates.

A method of increasing photo-luminescent quantum yield (PLQY) of QDs to be used as down-converters placed directly on an LED chip includes synthesizing a plurality of quantum dots, applying energy to the plurality of quantum dots to increase PLQY of the plurality of quantum dots, dispensing the plurality of quantum dots onto the LED chip, and curing the LED chip.

In one aspect a light emitting device includes a light emitting diode (LED) chip, and an encapsulant covering the LED chip. The encapsulant is embedded with a downconverter. The downconverter includes a quasi-two dimensional quantum nanoplatelet structure.

The invention provides a luminescent material comprising wavelength converter nanoparticles (120) with siloxane polymer capping ligands (130) associated to the wavelength converter nanoparticles (120), wherein the siloxane polymer capping ligands (130) comprise siloxane polymers which comprise at least one capping group comprising a terminal carboxylic acid group, wherein the capping group comprises in total at least six carbon atoms.

Provided is a process for producing a wavelength conversion member which can suppress the reaction between inorganic nanophosphor particles and glass to suppress the deterioration of the inorganic nanophosphor particles, and the wavelength conversion member. The process for producing a wavelength conversion member includes the steps of: preparing inorganic nanophosphor particles 1 with an organic protective film formed on respective surfaces thereof; and mixing the inorganic nanophosphor particles 1 with glass powder and firing a resultant mixture in a temperature range where the organic protective films remain as retained films 3.