Disclosed are a Micro LED micro-display chip and a manufacturing method thereof. The Micro LED micro-display chip includes a driver panel; multiple LED units arranged on the driver panel, wherein the multiple LED units includes multiple LED mesas in a one-to-one correspondence with the multiple LED units, and each of the LED units is independently drivable by the driver panel; a grid structure having multiple grid holes, wherein the multiple grid holes are respectively provided around the multiple LED mesas, and recess areas are formed between the LED mesas and the respective grid holes; a wavelength conversion layer provided on the grid structure, including multiple first wavelength conversion units filling the corresponding recess areas and configured to convert the first color light emitted by the LED units into second color light.

A display device includes a pixel electrode disposed on a substrate, light emitting elements disposed on the pixel electrode, the light emitting elements including a first semiconductor layer, an active layer, a second semiconductor layer, and a third semiconductor layer, a first via layer disposed on the substrate, and having a higher height than a height of the active layer and having a lower height than a height of the third semiconductor layer and a common electrode disposed on the first via layer and surrounding the side surfaces of the light emitting elements, the light emitting elements include two or more heterogeneous insulating layers having different refractive indices, and the heterogeneous insulating layers surround top and side surfaces of the first semiconductor layer and side surfaces of the first semiconductor layer and further surround at least a portion of a side surface of the second semiconductor layer.

A display that includes an image producing system and a light filtering layer in the blue range, the light filtering layer having a limited impact on the gamut of the display. The image producing system has a gamut G.sub.0 defined in a color space The light filtering layer includes semi-conductive nanoparticles, and the absorbance through the light filtering layer is greater than 0.25 for each light wavelength ranging from 350 nm to .sub.cut, .sub.cut being in the range from 420 nm to 450 nm. The gamut G.sub.1 of the image producing system with the filtering layer has an area greater than 90% of the area of gamut G.sub.0 in the color space.

An embodiment provides a display device including a light functional layer disposed on a substrate, the light functional layer includes a bank having openings, a first light scattering pattern, a first sub-light conversion pattern, a second light scattering pattern, and a second sub-light conversion pattern sequentially disposed in a first opening of the openings, and a thickness of each of the first sub-light conversion pattern and the second sub-light conversion pattern is thicker than a thickness of the first light scattering pattern and the second light scattering pattern.

A display panel is disclosed. The display panel comprises: a substrate divided into a plurality of pixel areas; a plurality of main light-emitting elements and an auxiliary light-emitting element mounted in each of the plurality of pixel areas; and a color conversion layer stacked on the plurality of main light-emitting elements and the auxiliary light-emitting element, wherein the color conversion layer is configured such that light emitted from the auxiliary light-emitting element passes through the color conversion layer and, as a result, has a first color corresponding to a defective first main light-emitting element among the plurality of main light-emitting elements.

A LED display device includes a display substrate; the display substrate includes an epitaxial layer, a common electrode layer, a reflective layer, and reflective electrode patterns. The epitaxial layer includes a first semiconductor layer, an active layer, and a second semiconductor layer sequentially stacked. The second semiconductor layer has first recessed regions, and protruding tabs are formed by the first recessed regions. The common electrode layer fills the first recessed regions and contact side walls of protrusion structures. The reflective layer covers top walls of the protruding tabs and the common electrode layer. The reflective electrode patterns are arranged at intervals on the side of the first semiconductor layer away from the active layer. A reflectivity of the reflective layer is less than that of the reflective electrode patterns to form resonant cavities, allowing light to be output from one side of the reflective layer.

An image display device includes: a light-transmitting substrate comprising a first surface; a circuit element located on the first surface; a first wiring layer located on the circuit element and electrically connected to the circuit element; a first insulating film covering the circuit element and the first wiring layer on the first surface; a first portion located on the first insulating film and comprising graphene; a light-emitting element located on the first portion; a second insulating film covering at least a portion of the light-emitting element, the first portion, and the first insulating film; a second wiring layer located on the second insulating film and electrically connected to a light-emitting surface facing a surface of the light-emitting element on a side of the first insulating film; and a first via passing through the first insulating film and the second insulating film and electrically connecting the first and second wiring layers.

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 display device includes a display region in which display pixels that emit visible light are arranged, and an adjacent region in which invisible light emitting pixels that emit at least invisible light in visible light and invisible light are arranged. The adjacent region is adjacent to the display region along an edge of the display region.

A display device includes: an insulating layer in which a first groove and a second groove surrounding the first groove are defined; a pixel defining layer disposed on the insulating layer and in which a light emitting opening, a first spacing opening overlapping the first groove, and a second spacing opening overlapping the second groove and surrounding the first spacing opening are defined; a light emitting element including a first electrode of which at least a portion is exposed by the light emitting opening, a second electrode, and a light emitting layer overlapping the light emitting opening; a spacer of which at least a portion is disposed inside the first groove and the first spacing opening; an inorganic encapsulation film disposed on the second electrode and the spacer; and a color filter layer disposed on the inorganic encapsulation film.