US 10,896,997 B2 · Light-diffusion quantum dot nanostructure with voids and LED component having the same

Abstract

The present invention discloses a light-diffusion quantum dot nanostructure and an LED component having the same. The quantum dot nanostructure comprises an optical core, an organic ligand layer, a hydrophobic layer, an inorganic encapsulation layer, and a multi-layered water vapor barrier layer. In the present invention, the multi-layered water vapor barrier layer is particularly designed to an onion skin-like structure, so as to facilitate photoluminescence rays radiated from the optical core can emit out of the barrier layer via voids or pores of the onion skin-like structure, such that the uniformity of the spatial light output distribution of the LED component having the quantum dot nanostructures can be obviously enhanced. On the other hand, because the multi-layered water vapor barrier layer can also improve the dispersibility of the light-diffusion quantum dot nanostructures in a colloidal encapsulation of the LED component, the luminous intensity of the LED component is therefore increased.

Claims18

Dependent claims

A light-diffusion quantum dot nanostructure with voids, comprising:

an optical core;
an organic ligand layer, being made of at least one organic ligand material and covering the optical core;
a hydrophobic layer, being made of at least one hydrophobic material, wherein the hydrophobic material conjugates with the organic ligand material through facile ligand exchange reactions, so as to facilitate the hydrophobic layer cover the organic ligand layer;
an inorganic encapsulation layer, covering the hydrophobic layer;
a multi-layered water vapor barrier layer, covering the inorganic encapsulation layer, and constituted by a plurality of concentric spherical shells;
and
a plurality of voids, forming between the plurality of concentric spherical shells.

4 more elements

An LED component, comprising:

an insulation body, being provided with a recess;
a lead frame, being disposed in the insulation body and having at least two welding portions and at least two electrical connection portions, wherein the welding portions locate in the recess and the electrical connection portions extend out of the insulation body;
an LED chip, being disposed in the recess and electrically connected to the welding portions, used for emitting a first colored light with a first wavelength;
a colloidal encapsulation, being filled into the recess for enclosing the LED chip and the welding portions;
and
a plurality of clusters of light-diffusion quantum dot nanostructures with voids, being spread in the colloidal encapsulation, wherein each of the light-diffusion quantum dot nanostructures comprises:
an optical core, being used for converting the first colored light to a second colored light with a second wavelength, wherein the second wavelength is longer than the first wavelength;
an organic ligand layer, being made of at least one organic ligand material and covering the optical core;
a hydrophobic layer, being made of at least one hydrophobic material, wherein the hydrophobic material conjugates with the organic ligand material through facile ligand exchange reactions, so as to facilitate the hydrophobic layer cover the organic ligand layer;
an inorganic encapsulation layer, covering the hydrophobic layer;
a multi-layered water vapor barrier layer, constituted by a plurality of concentric spherical shells, and covering the inorganic encapsulation layer;
and
a plurality of voids, forming between the plurality of concentric spherical shells.

10 more elements

Dependencies are inferred from the claim text.

Light-diffusion quantum dot nanostructure with voids and LED component having the same

Life of this patent

Light-diffusion quantum dot nanostructure with voids and LED component having the same

Life of this patent

Abstract

Claims18