A method of manufacturing a fluorescent substance includes forming dicing trenches on one surface of a fluorescent substance wafer along lattice-shaped dicing lines, and a lower surface grinding operation (S6) of grinding a surface opposite to a surface of the wafer in which the dicing trenches are formed as much as a predetermined thickness using a disk-shaped grinder so that the wafer is divided into a plurality of fluorescent substances, which are color conversion members for light emitting diodes (LEDs).

A display device includes a bank including an opening defining pixels, light emitting elements disposed in the pixels, a color conversion layer disposed on the light emitting elements in the opening, a capping layer overlapping the color conversion layer, and a color filter layer disposed on the capping layer. The color filter layer includes a low refractive material.

An LED device, particularly an LED lamp, includes pump LEDs and one or more phosphors allowing the lamp to emit both visible light and SWIR (short-wave infrared) useful in, for example, aviation safety. The emission spectrum of the phosphors provides SWIR light that has high transmission in air with a high water vapor concentration, making it suitable for use with SWIR cameras employed in aircraft. The layout of the LED device also delivers the sufficient visible flux required in aviation safety.

A display device includes: a substrate; a light emitting element disposed on the substrate; a bank layer disposed on the light emitting element and defining an opening overlapping the light emitting element in a plan view; a color conversion pattern disposed inside the opening and having an outer side surface including a contact portion that contacts an upper surface of the bank layer; and a capping layer covering the bank layer and the color conversion pattern. An angle between a first tangent from the contact portion to the outer side surface of the color conversion pattern and a second tangent from the contact portion to the upper surface of the bank layer in a direction away from the color conversion pattern is greater than or equal to about 90 degrees and less than about 180 degrees.

A display apparatus includes a backplane substrate including driving elements, and a first light-emitting section, a second light-emitting section, and a third light-emitting section spaced apart from each other on the backplane substrate, the first light-emitting section being configured to emit light of a first wavelength, the second light-emitting section being configured to emit light of a second wavelength, and the third light-emitting section being configured to emit light of a third wavelength, where each of the first light-emitting section, the second light-emitting section and the third light-emitting section includes a p-type semiconductor layer, an active layer configured to emit blue light, and an n-type semiconductor layer stacked in a direction perpendicular to an upper surface of the backplane substrate.

A display device is disclosed. The display device may include a light-emitting element that outputs source light and a light control layer on the light-emitting element, which transmits the source light or converts the wavelength of the source light. The light-emitting element may include a first electrode, a second electrode facing (e.g., opposite to) the first electrode, at least one green light-emitting structure between the first electrode and the second electrode, and at least one blue light-emitting structure between the first electrode and the second electrode. The light control layer may include a green light control part including a green quantum dot that converts the wavelength of light emitted from the light-emitting element and emits green light. The power conversion efficiency of the green light control part may be less than about 32%, thereby being able to exhibit or provide excellent or suitable light efficiency and relatively high luminance characteristics.

A lighting device, including: a lamp housing and a lamp cap connected to each other and formed a closed space; at least one light-emitting diode filament disposed in the closed space; and a stem connected to the lamp cap and electrical conducted with the light-emitting diode filament, wherein the light-emitting diode filament includes: a chip strip structure; a light conversion unit wrapping the chip strip structure; and electrodes located at two ends of the chip strip structure respectively and electrically connected thereto, wherein at least part of the electrodes are wrapped in the light conversion unit; the chip strip structure includes a substrate with a first end and a second end, and a deposition segment located between the first end and the second end; and the deposition segment includes a plurality of deposition units with a connecting layer disposed therebetween, and a conductor layer electrically connects the deposition units.

A display device according to an embodiment includes a display panel, and a color conversion layer disposed on the display panel, wherein the color conversion layer includes a quantum dot and a scatterer, the scatterer includes a first particle having a first diameter, and the first diameter is from about 100 nm to about 180 nm.

A pixel unit of a display includes a lighting module and a filtering module. The lighting module includes three lighting chips spaced apart from each other. The filtering module includes a planarization layer and a light adjustment layer that is disposed on the planarization layer and that is located between the planarization layer and the lighting module. The planarization layer has three light-transmissive regions respectively correspond in position to the three lighting chips and a light-blocking region that surrounds the three light-transmissive regions. The light adjustment layer includes two quantum dot wavelength conversion portions and a first light-intensity adjustment portion. The two quantum dot wavelength conversion portions respectively correspond in position to two of the three light-transmissive regions, and the first light-intensity adjustment portion corresponds in position to another one of the three light-transmissive regions.

A display device including sub-pixel areas including a first sub-pixel area, a second sub-pixel area, and a third sub-pixel area includes: light-emitting elements which are disposed on a base layer and include a first light-emitting element in the first sub-pixel area, a second light-emitting element in the second sub-pixel area, and a third light-emitting element in the third sub-pixel area; a first color conversion layer in the first sub-pixel area, a second color conversion layer in the second sub-pixel area, and a scattering layer in the third sub-pixel area, which are disposed on the light-emitting elements; and a bank which is disposed between the sub-pixel areas and includes a substrate material on which semiconductor layers grow.