A light emitting device may include a substrate. A light emitting element layer may be disposed on the substrate and may include light emitting elements having a rod shape. A color conversion layer may be disposed on the light emitting element layer and may include color conversion elements having a rod shape. A first alignment direction of the light emitting elements and a second alignment direction of the color conversion elements may be substantially parallel to each other or intersect at a predetermined angle.

A light-emitting module according to an embodiment comprises: a substrate; a plurality of light-emitting diode chips which are disposed on the substrate; a plurality of wavelength converters which are disposed on the plurality of light-emitting diode chips respectively; and a white wall which surrounds the plurality of light-emitting diode chips and the plurality of wavelength converters, wherein each of the plurality of wavelength converters includes a side surface which is inclined at an inclination angle of 80 degrees or less to the upper surface of the wavelength converter.

A light-emitting device and a display apparatus. The light-emitting device extracts, by means of a light extraction member, light emitted from a side surface (a second light-emitting surface) of a semiconductor light source; the light from the side surface is collected to a top part to be emitted to a wavelength conversion member together with light from a first light-emitting surface; white light is emitted from a top part (a second abutting surface of the wavelength conversion member; and after passing through a light-transmitting layer, the white light is emitted from a top part of the light-transmitting layer that is in the thickness direction thereof and is provided with a light inhibition layer, and the white light from the top part is partially inhibited by the light inhibition layer.

This application provides a pixel unit, a manufacturing method therefor, a microdisplay, and a pixel-level discrete device. The pixel unit includes a backplane and a display unit. The display unit is arranged on the backplane, and includes a first device layer and a second device layer. The first device layer includes a first compound light-emitting layer and a second compound light-emitting layer. The second device layer includes a color conversion layer and a third compound light-emitting layer. The color conversion layer is arranged above the first compound light-emitting layer. The color conversion layer is arranged, so that the compound light-emitting layer can implement color development through color conversion, to reduce power and improve performance. The pixel unit occupies less space in the horizontal direction. A decrease in external quantum efficiency caused by a size effect is effectively reduced, power consumption is effectively reduced, and performance such as brightness is improved.

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.

A light-emitting device includes a substrate; a frame disposed on an upper surface of the substrate; a first light-emitting element disposed on the upper surface of the substrate and within a first region along an inner periphery of the frame; a second light-emitting element disposed on the upper surface of the substrate and within a second region surrounded by the first region; a wall part disposed on the upper surface of the substrate, contacting the frame, and extending from the inner periphery of the frame toward the second region; a wavelength conversion member disposed on the upper surface of the substrate and within a region surrounded by the frame, and covering the wall part, the first light-emitting element, and the second light-emitting element; and a circuit including a first drive circuit that drives the first light-emitting element and a second drive circuit that drives the second light-emitting element.

A light-emitting device includes a substrate; a first frame disposed on the substrate; a second frame disposed on the substrate and inward of the first frame; a first light-emitting element disposed on the substrate and between the first and second frames; a second light-emitting element disposed on the substrate and inward of the second frame; a first wavelength conversion member disposed on the substrate and within a region surrounded by the first frame, and covering the second frame, the first light-emitting element, and the second light-emitting element; and a circuit including a first drive circuit that drives the first light-emitting element and a second drive circuit that drives the second light-emitting element. The first wavelength conversion member includes a phosphor-containing portion, phosphor particles are present predominantly on a substrate side of the phosphor-containing portion, and a height of the second frame is less than a thickness of the phosphor-containing portion.

A display device capable of more efficiently taking out light transmitted through a wavelength conversion layer is provided. The display device includes, at least, a light source provided in each of a first pixel and a second pixel and configured to emit light of a first wavelength, a first wavelength conversion layer formed in the first pixel and configured to convert the light of the first wavelength into light of a second wavelength, a second wavelength conversion layer formed in the second pixel and configured to convert the light of the first wavelength into light of a third wavelength different from the second wavelength, a first color filter provided in the first pixel and configured to selectively transmit the light of the second wavelength, a second color filter provided in the second pixel and configured to selectively transmit the light of the third wavelength, and a plurality of nano members on which the light of the second wavelength and the light of the third wavelength are incident, and wherein the plurality of nano members include a high refractive index dielectric, and wherein the plurality of nano members are arranged in the first pixel in a first periodic distance, and wherein the plurality of nano members are arranged in the second pixel in a second periodic distance different from the first periodic distance.

The present invention relates to a LED filament (1) having a longitudinal extension (L) and a transverse extension (W) being perpendicular to the longitudinal extension (L), the LED filament (1) comprising: at least one first LED filament portion (2) extending in the longitudinal extension (L) of the LED filament (1) and comprising a plurality of first LED dies (3) adapted to emit first LED light, the first LED dies (3) being encapsulated by a first encapsulant (4) comprising a luminescent material; at least one second LED filament portion (5) parallel to the first LED filament portion (2) and comprising a plurality of red, green, and blue LED dies (6, 7, 8) adapted to emit second LED light comprising at least one of red, green and blue light; wherein the plurality of red, green, and blue LED dies (6, 7, 8) are arranged in rows running in the transverse direction (W) and spaced apart in the longitudinal direction (L), wherein each row comprises at least two LED dies, and wherein at least one of the red LED die and the green LED die (6, 8) is arranged between each blue LED die (7) and the first LED filament portion (2) in order to reduce or prevent optical cross-talk between the first encapsulant (4) and the second LED light.

A display device and a method for manufacturing the same are provided. A light-emitting element includes semiconductor layers including a first semiconductor layer, an active layer, a second semiconductor layer, and a third semiconductor layer, and defining at least one concave groove that is concave downwardly from one surface of the first semiconductor layer, a first protective layer on side surfaces of the semiconductor layers, on a top surface of the first semiconductor layer, and on inner surfaces of the semiconductor layers and on the third semiconductor layer in the concave groove, and a wavelength conversion layer containing wavelength conversion particles in the concave groove.