Provided is a display device including: a substrate including a display area and a peripheral area that includes a bending area disposed adjacent to the display area; a plurality of pixels arranged in the display area; a driving circuit arranged in the peripheral area; a barrier rib layer arranged in the bending area; an input detection layer disposed on the plurality of pixels; and an optical functional layer including a first layer that is disposed on the input detection layer and includes a first opening in an area corresponding to the plurality of pixels, and a second layer that is disposed on the first layer and having a refractive index different from the first layer, wherein the first layer includes at least one valley located between the bending area and the driving circuit.

A polarization film includes: a polarization layer; a first light compensation film arranged on one side of the polarization layer and including a positive A plate; and a second light compensation film arranged on one side of the first light compensation film and including a positive C plate. A value of n.sub.e(+C)n.sub.e(+A) is positive at a wavelength of 450 nm and negative at a wavelength of 650 nm. Here, ne(+A) denotes an extraordinary refractive index of the first light compensation film and n.sub.e(+C) denotes an extraordinary refractive index of the second light compensation film.

The embodiments of the present application disclose an organic light emitting display panel and a manufacturing method thereof. The organic light emitting display panel includes an organic light emitting diode layer and a metal nanoparticle layer. The metal nanoparticle layer is disposed on a side of the organic light emitting diode layer in contact with external environment, wherein metal nanoparticles of the metal nanoparticle layer can use their own surface plasmon resonance absorption effect to absorb ultraviolet rays emitted from external environment to the organic light emitting diode layer, thereby preventing ultraviolet rays from irradiating the organic light emitting diode layer.

The present disclosure provides an apparatus including a display element including a plurality of light-emitting elements disposed two-dimensionally on a plane and a plurality of microlenses provided for corresponding ones of the plurality of light-emitting elements, and an ocular optical system, containing at least one reflective surface therein, that guides light from a display surface of the display element to an exit pupil, wherein in a peripheral part of the display element, a center position of the light emission region of each light-emitting element and a center of the microlens corresponding to the light-emitting element are shifted from each other in a direction parallel to the plane.

A foldable display device including: a display panel; an input sensor directly disposed on the display panel and having an upper surface; an anti-reflector disposed on the upper surface of the input sensor, the anti-reflector including: a polarizer; and at least one lower retarder disposed between the input sensor and the polarizer; an upper retarder disposed on the anti-reflector, the upper retarder having a Young's modulus of about 4 GPa to about 100 GPa; a window disposed on the upper retarder and having an upper surface facing away from the upper retarder; and at least one adhesion member disposed between the input sensor and the window, wherein a thickness from the upper surface of the input sensor to the upper surface of the window is about 130 m to about 540 m.

Display structures for controlling viewing angle color shift are described. In various embodiments, polarization sensitive diffusers, independent controlled cathode thicknesses, filtermasks, and color filters are described.

A pixel array package structure includes: a substrate; a pixel array disposed on the substrate, in which the pixel array includes a plurality of light emitting diode chips, and the light emitting diode chips include at least one red diode chip, at least one green diode chip, at least one blue diode chip, and a combination thereof; a reflective layer disposed on the substrate and between any two adjacent of the light emitting diode chips; a light-absorbing layer disposed on the reflective layer and surrounding the pixel array; and a light-transmitting layer disposed on the pixel array, the reflective layer, and the light-absorbing layer, in which the light-transmitting layer has an upper surface and a lower surface opposite thereto, and the lower surface is in contact with the pixel array, and the upper surface has a roughness of 0.005 mm to 0.1 mm.

An optoelectronic arrangement having a radiation conversion element and a method for producing a radiation conversion element are disclosed. In an embodiment, an optoelectronic arrangement includes a semiconductor chip having an active region configured to generate radiation, a radiation conversion element arranged downstream of the semiconductor chip in an emission direction and a reflective polarization element arranged downstream of the radiation conversion element in the emission direction. The radiation conversion element has a plurality of conversion elements, each of which has an axis of symmetry, the spatial orientation of the axes of symmetry has a preferred direction and a radiation emitted by the radiation conversion element has a preferred polarization. The reflective polarization element largely allows radiation with the preferred polarization to pass through and largely reflects radiation polarized perpendicularly to the preferred polarization.

Provided is a flexible organic electroluminescent device and a method for fabricating the same. In the flexible electroluminescent device, line hole patterns are formed on surfaces of a plurality of inorganic layers positioned in a pad region in which a flexible printed circuit board is connected to prevent a path of cracks caused by repeated bending and spreading of the organic electroluminescent device from spreading to the interior of the device.

A retardation plate is formed by laminating at least two retardation plates of a retardation plate 1 and a retardation plate 2, in which at least one of the retardation plate 1 and the retardation plate 2 is formed of a polymer of a polymerizable liquid crystal composition. It is possible to provide a retardation plate imparting a phase difference of wavelength over a wide wavelength region, a circularly polarizing plate having excellent anti-reflection performance over a wide wavelength region, and a display element or a light-emitting element having excellent visibility.