Abstract: A display apparatus can include a light-emitting unit including a hole transport layer, an anti-degradation layer, an electron blocking layer and a blue emission material layer stacked on a lower electrode. The display apparatus can further include an upper electrode disposed on the light-emitting unit, the upper electrode having a lower work-function than the lower electrode, in which the blue emission material layer includes a blue dopant, and the anti-degradation layer is made of a fluorescent dopant in which an amine monomer is substituted in a core.

Abstract: A display device includes a display unit including a plurality of pixels arranged in a first direction and a second direction intersecting the first direction and a lens unit disposed on the display unit and configured to refract an image output from the display unit. The lens unit includes a lens array including a plurality of lenses each extending at an acute angle with respect to the second direction and a liquid crystal layer disposed on the lens array. The liquid crystal layer includes liquid crystal molecules oriented in substantially the same direction as an extension direction of the lenses.

Abstract: A stereoscopic image display device includes pixels arranged in a first direction and a second direction perpendicular to the first direction, and including light emitting surfaces facing a third direction perpendicular to the first and second directions, and a lens overlapping the pixels in the third direction and arranged such that a long side of the lens is slanted with respect to the second direction. The pixels include first pixels having a first arrangement of first to third sub-pixels, and second pixels having a second arrangement of the first to third sub-pixels, wherein the first sub-pixels of each of the first pixels arranged along the long side are aligned with each other, and the third sub-pixels of each of the second pixels arranged along the long side are not aligned with the third sub-pixels of the first pixels arranged along the long side.

Abstract: An augmented reality providing apparatus is provided. The augmented reality providing apparatus includes a lens including a first lens portion including a first reflective member, and a second lens portion including a second reflective member, and a display device on one side of the lens for displaying first and second images, wherein the first reflective member reflects the first image at a first angle, and the second reflective member reflects the second image at a second angle that is different from the first angle.

Abstract: A display device includes a substrate, a first set of light emitting structures, a second set of light emitting structures, a diffraction layer, and a refraction pattern. The substrate includes a first region and a second region. The first set of light emitting structures overlaps the first region. The second set of light emitting structures overlaps the second region. The diffraction layer overlaps the first region without overlapping the second region. The refraction pattern overlaps the diffraction layer. The diffraction layer includes first-refractive-index members and second-refractive-index members that are alternately disposed. A refractive index of each of the first-refractive-index members is lower than a refractive index of each of the second-refractive-index members.

Abstract: A display device includes a display panel, an optical member, and a display driver. The display panel is configured to display a plurality of 2D images. The optical member is configured to refract 2D image display light displayed in a display area of the display panel into a first refraction direction or a second refraction direction to output 3D stereoscopic image display light. The display driver is configured to control a refraction direction of the 3D stereoscopic image display light by dividing a 3D stereoscopic image display period of at least one frame into first and second time-division frames and supplying driving voltages to the optical member in each of the first and second time-division frames.

Abstract: A display device including: a display panel including sub-pixels; a viewpoint separation unit configured to separate viewpoint images displayed by the display panel for each viewpoint; and a control unit configured to determine a left eye viewpoint image provided to a left eye viewpoint corresponding to a left eye position of a viewer and a right eye viewpoint image provided to a right eye viewpoint corresponding to a right eye position of the viewer, wherein the control unit converts left eye adjacent viewpoint images provided to viewpoints adjacent to the left eye viewpoint into the left eye viewpoint image, and converts right eye adjacent viewpoint images provided to viewpoints adjacent to the right eye viewpoint into the right eye viewpoint image.

Abstract: An organic light emitting diode (OLED) and an organic light emitting device (e.g., a display device or a lighting device) thereof are described. The OLED comprises a first electrode, a second electrode, a first emitting part (including a first hole transporting layer (HTL) and a first emitting material layer (EML), positioned between the first and second electrodes); and a second emitting part (including a second EML and positioned between the first emitting part and the second electrode). The first EML is a blue EML, and the second EML includes at least one of a red EML and a blue EML. The first hole HTL includes a high refractive layer having a first refractive index, and a low refractive layer having a second refractive index, positioned between the high refractive layer and the first EML, where the second refractive index is smaller than the first refractive index.

Abstract: An organic light emitting diode (OLED) and an organic light emitting device comprising the OLED (e.g., a display device or a lighting device) are described. The OLED can include a first blue emitting material layer including a first host, and a second blue emitting material layer including a second host, disposed between two electrodes. The OLED includes two blue emitting material layers so that an exciton recombination zone is distributed within the blue emitting material layers irrespective of current density or gradation. As the amount of non-emitting excitons accumulated outside of the emitting material layers is minimized, the driving voltage of the OLED can be lowered, and the luminous efficiency and the luminous lifespan of the OLED can be improved.

Abstract: An organic light emitting diode (OLED) and an organic light emitting device (e.g., a display device or a lighting device) comprising the OLED are described. An emissive layer includes a red emitting material layer, a yellow-green emitting material layer and a green emitting material layer disposed sequentially between two electrodes, where each of the emitting material layers has controlled thickness and includes at least one host with controlled energy level. The OLED and the organic light emitting device have improved pure color luminous efficiency and color gamut, as well as luminous efficiency and luminous lifespan.

Abstract: An organic light emitting diode (OLED) and an organic light emitting device comprising the OLED (e.g., a display device or a lighting device) are described. The OLED can include a blue emitting material layer including plural hosts with adjusted energy levels. A HOMO energy barrier between the at least one blue emitting material layer and at least one hole transport layer and/or electron blocking layer can be minimized. Holes generated at an anode or a P-type charge generation layer can be injected rapidly into the at least one blue emitting material layer without accumulating at an interface between the hole transport layer and/or the electron blocking layer, and the at least one blue emitting material layer. As the amount of non-emitting holes is minimized, the driving voltage of the OLED can be lowered, and the luminous efficiency and the luminous lifespan of the OLED can be improved.

Abstract: A stereoscopic image display device includes an eye detection sensor that includes a camera that captures an image of a user's eyes, a display panel disposed on the eye detection sensor and that includes pixels, and a light modulator disposed on the display panel and that controls the path of light output from the display panel. The light modulator includes a first electrode layer, a second electrode layer that faces the first electrode layer and includes a first sub-electrode that overlaps a first area of the eye detection sensor and a second sub-electrode that does not overlap the first area but overlaps a second area of the eye detection sensor that overlaps the camera, and a liquid crystal layer disposed between the first electrode layer and the second electrode layer and that includes liquid crystal molecules.

Abstract: An organic light emitting diode (OLED) and an organic light emitting device comprising the OLED are described. The OLED can comprise a first electrode; a second electrode facing the first electrode; and a first emitting part (including a first blue emitting layer and a second blue emitting layer), which is positioned between the first and second electrode. The second blue emitting layer is positioned between the first blue emitting layer and the second electrode and contacting the first blue emitting layer. The first blue emitting layer includes a first host and a first dopant, and the second blue emitting layer includes a second host and a second dopant, wherein the first host is a pyrene derivative, and the second host is an anthracene derivative. An organic light emitting device can include the OLED, and can be a display device or a lighting device.

Abstract: An augmented reality providing apparatus is provided. The augmented reality providing apparatus includes a lens including a first lens portion including a first reflective member, and a second lens portion including a second reflective member, and a display device on one side of the lens for displaying first and second images, wherein the first reflective member reflects the first image at a first angle, and the second reflective member reflects the second image at a second angle that is different from the first angle.

Abstract: An organic light emitting diode (OLED) is described, having an emissive layer with an emitting part including at least one emitting material layer, a first electron transport layer, and a second electron transport layer disposed sequentially between two facing electrodes. The first electron transport layer includes a first electron transporting material of an azine-containing compound and the second electron transport layer includes a second electron transporting material of a benzimidazole-containing compound. The first electron transport layer, with controlled electron transporting property and energy level, is disposed adjacently to the at least one emitting material layer and the second electron transporting layer is disposed adjacently to the second electrode or an electron injection layer so that the OLED can lower driving voltage and can maximize luminous efficiency and luminous lifespan. An organic light emitting device including the OLED can be a display device or a lighting device.

Abstract: The present disclosure relates to an organic light emitting diode (OLED) where adjacent emitting material layers includes hosts with different LUMO energy level and/or electron mobility. A first emitting material layer including a first host with relatively slow electron mobility and/or relatively high LUMO energy level is disposed adjacently to a hole transport layer and a second emitting material layer including a second host with relatively fast electron mobility and/or relatively low LUMO energy level is disposed adjacent to an electron transport layer. No exciplex between hole transporting material and the first host is not formed while exciplex between the hole transporting material and the second host is formed so that exciton loss can be minimized. An OLED and an organic light emitting device with low driving voltage and low power consumption and beneficial luminous property and luminous lifetime can be realized.

Abstract: A display assembly includes a display device having an upper surface on which an image is output, and a lens device detachably connected to the upper surface of the display device. The lens device includes a lens panel that refracts the image from the display device, and a connection layer disposed on a lower surface of the lens panel facing the display device and detachably connected to the upper surface of the display device. The upper surface of the display device includes first contact interfaces, and the connection layer includes second contact interfaces detachably connected to the first contact interfaces.

Abstract: A display device includes a display panel, a lens array disposed on a first surface of the display panel and including a plurality of lenses, and an optical filter disposed on the first surface of the display panel. The optical filter includes a plurality of first portions and a plurality of second portions which are alternately arranged in a first direction parallel to the first surface of the display panel. Each of the plurality of first portions has a first transmittance value. Each of the plurality of second portions has a symmetric light transmittance distribution in which a transmittance value increases from the center having a second transmittance value to each of opposite ends having a third transmittance value.

Abstract: A three-dimensional (3D) display device includes a display panel which operates in a first mode for displaying a first image or a second mode for displaying a second image and a liquid crystal lens panel disposed on the display panel, where the liquid crystal lens panel refracts the first image in a way such that the first image has a first viewing angle and refracts the second image in a way such that the second image has a second viewing angle greater than the first viewing angle. The liquid crystal lens panel includes an upper substrate, a first lens layer including a plurality of first lenses, a lower substrate, a second lens layer including a plurality of second lenses, and a liquid crystal layer. A first pitch of each of the plurality of first lenses is less than a second pitch of each of the plurality of second lenses.

Abstract: An embodiment of a display device includes a substrate, a first light-emitting element, and a light control layer. The substrate includes a display area and a peripheral area adjacent to the display area, and the display area includes a light-emitting area and a light-blocking area. The first light-emitting element is disposed in the light-emitting area on the substrate and emits a first light having a first wavelength range. The light control layer is disposed on the first light-emitting element, and defines an opening exposing a portion of the light-emitting area. The light control layer includes a photochromic material such that in operation a second light having a second wavelength range different from the first wavelength range applied to the light control layer discolors the light control layer.