Abstract: A display device includes a substrate, a light emitting device disposed on the substrate, a first layer disposed on the light emitting device, a high refractive index layer disposed on the first layer and overlapping the light emitting device, and a low refractive index layer disposed on the first layer and having a lower refractive index than the high refractive index layer, wherein a side surface of the high refractive index layer and a side surface of the low refractive index layer are in contact with each other, and to form an inclined surface, and an angle of the inclined surface is in a range of about 45 to about 80 degrees.

Abstract: A display device according to an embodiment includes: a substrate; a transistor on the substrate; a pixel electrode electrically connected to the transistor; a pixel defining layer on the pixel electrode and having a first opening overlapping the pixel electrode; an emission layer on the pixel electrode; a common electrode on the pixel definition layer and the emission layer; an encapsulation layer on the common electrode; a light extraction pattern on the encapsulation layer and having a first refractive index; and a reflection control layer covering the light extraction pattern and having a second refractive index different from the first refractive index.

Abstract: A display device includes a plurality of pixels including a first pixel representing green, where each of the pixels includes a light emitting element including an anode, a light emitting layer, and a cathode. The display device further includes a control layer disposed in a direction in which the light emitting element emits light and overlapping the first pixel, and a transmittance of the control layer at a first wavelength band, within a green wavelength band, is lower than a transmittance at a remaining visible light region such that a decrease in a front luminance spectrum by the control layer is greater than a decrease in a side luminance spectrum by the control layer.

Abstract: A display device according to an embodiment includes: a substrate; a transistor on the substrate; a pixel electrode electrically connected to the transistor; a pixel defining layer on the pixel electrode and having a first opening overlapping the pixel electrode; an emission layer on the pixel electrode; a common electrode on the pixel definition layer and the emission layer; an encapsulation layer on the common electrode; a light extraction pattern on the encapsulation layer and having a first refractive index; and a reflection control layer covering the light extraction pattern and having a second refractive index different from the first refractive index.

Abstract: A display device includes a first light emitting element, a second light emitting element, and a third light emitting element that are disposed on a substrate and emitting light of different colors, respectively; a first insulation layer disposed on the first light emitting element, the second light emitting element, and the third light emitting element, and including at least one opening; and a second insulation layer disposed on the first insulation layer, and disposed in the at least one opening, wherein a refractive index of the second insulation layer is higher than a refractive index of the first insulation layer, and the at least one opening overlaps at least one of the first light emitting element, the second light emitting element, and the third light emitting element in a plan view, and does not overlap at least another one in a plan view.

Abstract: A display device includes a first light emitting element, a second light emitting element, and a third light emitting element that are disposed on a substrate and emitting light of different colors, respectively; a first insulation layer disposed on the first light emitting element, the second light emitting element, and the third light emitting element, and including at least one opening; and a second insulation layer disposed on the first insulation layer, and disposed in the at least one opening, wherein a refractive index of the second insulation layer is higher than a refractive index of the first insulation layer, and the at least one opening overlaps at least one of the first light emitting element, the second light emitting element, and the third light emitting element in a plan view, and does not overlap at least another one in a plan view.

Abstract: An organic light-emitting display device includes: a plurality of pattern electrodes; a hole-transporting layer disposed on the plurality of pattern electrodes; a plurality of emission layers disposed on the hole-transporting layer and overlapping the plurality of pattern electrodes, respectively; a common electrode disposed on the emission layers; and a first auxiliary layer disposed between a first one of the pattern electrodes and a first one of the emission layers, wherein the first emission layer forms an interface with the hole-transporting layer or the first auxiliary layer, the interface having a hole barrier equal to or less than about 0.1 eV, wherein the hole-transporting layer and the first auxiliary layer have a hole mobility equal to or less than about 1.0×10?3 cm2/V·s.

Abstract: A backlight unit which provides light to a liquid crystal display panel of a liquid crystal display. The backlight unit includes an optical lens module including an optical lens disposed above a point light source and configured to refract light output from the point light source, and a reflective polarization layer disposed directly on the optical lens and configured to separate polarization components of the light to transmit one polarization component and reflect another polarization component.

Abstract: A backlight unit which provides light to a liquid crystal display panel of a liquid crystal display. The backlight unit includes an optical lens module including an optical lens disposed above a point light source and configured to refract light output from the point light source, and a reflective polarization layer disposed directly on the optical lens and configured to separate polarization components of the light to transmit one polarization component and reflect another polarization component.