A display includes a backplane, an array of light sources coupled to the backplane, and a cover plate arranged over the array of light sources. The cover plate includes a first side facing the array of light sources and a second side opposite to the first side. The cover plate includes a microstructure layer and an absorption layer. The microstructure layer is arranged on the first side of the cover plate. The absorption layer is arranged on the microstructure layer facing the array of light sources.

A light-emitting substrate includes a back plate, light-emitting regions arranged in an array and a bonding electrode group. The light-emitting regions are disposed on the back plate, and each light-emitting region is provided with at least one light-emitting group therein. The bonding electrode group is disposed on the back plate and includes a first bonding electrode and remaining bonding electrodes. A second power supply voltage terminal of a light-emitting group is electrically connected to a feedback signal line included in the light-emitting substrate, and the first bonding electrode is electrically connected to the feedback signal line. An impedance between the first bonding electrode and an adjacent one of the remaining bonding electrodes is larger then an impedance between two adjacent and consecutive ones of the remaining bonding electrodes.

A light emitting device and a light source module are provided. The light emitting device includes a base, a conductive unit, a light unit, and a package. The base includes a first substrate and n through holes, and the through holes pass through the first substrate. The conductive unit includes m conductors that are separate from each other, and the conductors pass through the first substrate. The light unit is electrically connected to the conductors. The package includes a first package body surrounding the light unit and a second package body covering the light unit and the first package body. The first package body and the second package body have different optical properties. Furthermore, m and n are integers greater than or equal to 2, and m is greater than or equal to n.

An exemplary white light emitting device includes a plurality of LEDs disposed on a substrate, where the LEDs emit blue light at substantially the same correlated color temperature; a first photoluminescence material layer disposed over a first subset of the LEDs; a second photoluminescence material layer disposed over a second subset of the LEDs different from the first subset of the plurality of LEDs, the second photoluminescence material layer separate from the first photoluminescence material layer; and a diffusing layer separate from and disposed over the first and second photoluminescence layers, where the diffusing layer is associated with a plurality of light scattering particles.

An exemplary white light emitting device includes a plurality of LEDs disposed on a substrate, where the LEDs emit blue light at substantially the same correlated color temperature; a first photoluminescence material layer disposed over a first subset of the LEDs; a second photoluminescence material layer disposed over a second subset of the LEDs different from the first subset of the plurality of LEDs, the second photoluminescence material layer separate from the first photoluminescence material layer; and a diffusing layer separate from and disposed over the first and second photoluminescence layers, where the diffusing layer is associated with a plurality of light scattering particles.

A micro-LED structure includes: a first type conductive layer; a second type conductive layer stacked on the first type conductive layer; and a light emitting layer formed between the first type conductive layer and the second type conductive layer. The light emitting layer extrudes along a horizontal level away from a top edge of the first type conductive layer and a bottom edge of the second type conductive layer, such that an edge of the light emitting layer does not contact the top edge of the first type conductive layer and the bottom edge of the second type conductive layer. A profile of the second type conductive layer perpendicularly projected on a top surface of the first type conductive layer is surrounded by the top edge of the first type conductive layer.

In an embodiment a radiation emitting device includes a semiconductor chip configured to emit electromagnetic radiation of a first wavelength range from a radiation exit surface and a potting comprising a matrix material and a plurality of nanoparticles, wherein a concentration of the nanoparticles in the matrix material decreases starting from the radiation exit surface of the semiconductor chip so that a refractive index of the potting decreases starting from the radiation exit surface of the semiconductor chip, and wherein the nanoparticles are coated with a shell.

In an embodiment a radiation emitting device includes a semiconductor chip configured to emit electromagnetic radiation of a first wavelength range from a radiation exit surface and a potting comprising a matrix material and a plurality of nanoparticles, wherein a concentration of the nanoparticles in the matrix material decreases starting from the radiation exit surface of the semiconductor chip so that a refractive index of the potting decreases starting from the radiation exit surface of the semiconductor chip, and wherein the nanoparticles are coated with a shell.

A display device includes a bank including an opening defining a plurality of pixels; a plurality of light emitting elements disposed in the plurality of pixels; a color conversion layer disposed on the plurality of light emitting elements in the opening; and a low refractive layer disposed on the color conversion layer in the opening.

A display device includes a bank including an opening defining a plurality of pixels; a plurality of light emitting elements disposed in the plurality of pixels; a color conversion layer disposed on the plurality of light emitting elements in the opening; and a low refractive layer disposed on the color conversion layer in the opening.