A display apparatus includes a substrate, a pixel layer arranged over the substrate and including a plurality of display elements, an encapsulation member sealing the pixel layer, and a refractive layer arranged on the encapsulation layer and including a first refractive layer and a second refractive layer. The first refractive layer includes openings that correspond to the plurality of display elements, and the second refractive layer includes high refractive particles. The second refractive layer includes a first layer and a second layer, the first layer includes the high refractive particles dispersed in a first concentration, and the second layer includes the high refractive particles dispersed in a second concentration different from the first concentration.

Methods, a display system and projection screen are described. The projection screen includes a substrate supporting a plurality of pixels. Each pixel has a sensitizing part communicating with at least one light source, the sensitizing part being configured to detect a presence of a non-visible medium indicative of a part of an image, and to activate the at least one light source to emit light. The pixels having a first electrode and a second electrode configured to supply electricity to the sensitizing part and the light source.

A display device includes light transmitting areas including a first light transmitting area and light emitting areas around the light transmitting areas and including a first light emitting area disposed around the first light transmitting area, wherein the first light emitting area includes a first-first light emitting area adjacent to a first portion of each of the light transmitting areas, a first-second light emitting area adjacent to a second portion of each of the light transmitting areas, a first-third light emitting area adjacent to a third portion of each of the light transmitting areas, and a first-fourth light emitting area disposed adjacent to a fourth portion of each of the light transmitting areas. The first-first to first-fourth light emitting areas each include at least one of first to third light emitting portions to emit light of first to third colors, respectively.

A display device is discussed, which has improved transmittance and relieves a visual difference in a camera region, even though a camera is provided in an active region, by changing the configuration of a substrate in a region corresponding to the camera.

A display device includes a first substrate and a second substrate at which a display area for displaying an image and a non-display area surrounding the display area are provided; a light-emitting diode in the display area on an inner surface of the first substrate and including an anode electrode, a light-emitting layer and a cathode electrode; and a piezoelectric element in the display area on an inner surface of the second substrate and including a first electrode, a piezoelectric layer and a second electrode, wherein the piezoelectric layer includes dichroic dyes.

A display panel including a power supplying auxiliary electrode above the substrate in at least one gap among gaps between pixel electrodes in row and column directions, not in contact with the pixel electrodes, extending in the row and/or column direction. An intermediate layer is on or above light-emitting layers and the auxiliary electrode, and includes a fluoride of an alkali metal or an alkaline earth metal. A functional layer is on or above the intermediate layer, and includes an organic material that facilitates electron transport and/or facilitates electron injection and a rare earth metal dopant. A counter electrode is on or above the functional layer. Further, 1≤x≤3, 20≤y≤40, and y≥10x+10, where x is film thickness of the intermediate layer in nanometers, and y is percentage by weight of the rare earth metal dopant in the functional layer.

A light-emitting structure includes a substrate, a sub-pixel stack, a cover layer over the sub-pixel stack, and at least one interface between the substrate and the cover layer. The at least one interface has an interface roughness. The sub-pixel stack includes an emissive layer between a first transport layer and a second transport layer, a first electrode layer coupled to the first transport layer, and a second electrode layer coupled to the second transport layer. The sub-pixel stack is over the substrate and configured to emit light including a scattering component caused by the interface roughness and a cavity component separate from the scattering component. A ratio of a luminance of the scattering component to a luminance of the cavity component increases with a viewing angle relative to a display normal. An optical power of the scattering component is a fraction of an optical power of the cavity component.

A display device is provided. The display device has a display region and includes: a substrate; a driving layer disposed on the substrate; a self-emitting layer disposed on the driving layer and including a reflective electrode; a sensor overlapping the display region in a normal direction of the substrate; a pixel defining layer disposed on the reflective electrode, wherein the pixel defining layer includes a top surface and a bottom surface opposite to the top surface, and the bottom surface faces the driving layer; a spacer disposed on the top surface of the pixel defining layer; and a first touch electrode and a second touch electrode disposed in the display region, wherein the sensor overlaps the first touch electrode or the second touch electrode in the normal direction of the substrate.

A light-emitting device of a transmissive type includes, as subpixels, a red subpixel including a red light-emitting layer, a green subpixel including a green light-emitting layer, and a blue subpixel including a blue light-emitting layer arranged in parallel with one another. The display light-emitting device includes an opaque region that overlaps at least the red subpixel and the green subpixel, each in its entirety, in a plan view and blocks background light, and a transparent region that overlaps at least a portion of the blue subpixel in a plan view and transmits background light.

A display panel includes a substrate, a pad, an auxiliary electrode layer, a data line layer, a first electrode layer, a light emitting layer, and a second electrode layer. The substrate has a display area and a peripheral area. The pad is disposed on a side of the substrate and located in the peripheral area. The auxiliary electrode layer is disposed on the same side of the substrate as the pad; the data line layer is disposed on a same layer as the auxiliary electrode layer; the first electrode layer is disposed on a side of the auxiliary electrode layer facing away from the substrate; the light emitting layer is disposed on a side of the first electrode layer facing away from the substrate; and the second electrode layer is disposed on a side of the light emitting layer facing away from the substrate and connected to the auxiliary electrode layer.