Provided are an organic electroluminescence device capable of enhancing reflectance of an anode, thereby resulting in improved light-emitting efficiency and a method of manufacturing the same. An anode (12), a thin film layer for hole injection (13), an insulating layer (14), an organic layer (15) including a luminescent layer (15C) and a cathode (16) including a semi-transparent electrode (16A) are laminated in order on a substrate (11). The anode (12) comprises silver which is a metal with high reflectance or an alloy including silver, and the thin film layer for hole injection (13) comprises chromium oxide or the like. Light generated in the luminescent layer (15C) is multiply reflected between the anode (12) and the semi-transparent electrode (16A) to be emitted from the cathode (16). As the reflectance of the anode (12) is enhanced, the light generated in the luminescent layer (15C) can be efficiently emitted. An alloy comprised in the anode (12) preferably includes silver, palladium and copper, and a silver content is preferably 50% by mass or over.

An organic light emitting device utilizing the micro-cavity effect in the RGB subpixel regions while suppressing the micro-cavity effect in the white subpixel region is provided. The organic light emitting device includes a lower substrate, an anode formed on the lower substrate, an organic emission layer formed on the anode, a cathode formed on the organic emission layer, and a reflection decreasing layer formed on at least a portion of the cathode for reducing reflection of the light emitted from the organic emission layer by the cathode to reduce the micro-cavity effect. Such a selective use of the micro-cavity effect in the organic light emitting device improves the color accuracy, the luminance efficiency and the lifespan of the top emission type organic light emitting device.

An organic EL element includes a pixel electrode, a light emitting function layer that is formed on the pixel electrode, an electron injection layer formed on the light emitting function layer, and a counter electrode that is formed on the electron injection layer and that has semi-transmissive reflectivity, in which the counter electrode contains a reductive material that reduces material of the electron injection layer and Ag with atomic ratio of 75% or more, and an adsorption layer is formed on the counter electrode.

The first electrode has a convexo-concave structure including a plurality of convex portions and a plurality of concave portions at an interface with the organic compound layer. The convexo-concave structure has at least one cross section in a thickness direction of the light-transmissive substrate, the cross section being shaped in a sine-wave curve or a curve represented by a sum of a plurality of sine waves having different amplitudes or angles. A distance between a convex portion and an adjacent convex portion forming the convexo-concave structure is equal to or more than a peak wavelength of light radiated from the emitting layer and is equal to or less than a propagation distance (L.sub.sp) of surface plasmon at the interface between the first electrode having the convexo-concave structure and the organic compound layer.

According to one embodiment, a display device includes a base material, a first insulating layer disposed on the substrate, a first electrode disposed on the first insulating layer, an organic layer disposed on the first electrode, a second electrode disposed on the organic layer, a second insulating layer disposed on the first insulating layer and including an opening portion overlapping with the second electrode, and a third electrode covering the second electrode and the second insulating layer. The first electrode, the organic layer, and the second electrode are separated for each pixel.

The present invention provides a display panel and a display device thereof. The display panel includes an anode layer, a hole transport layer, a light-emitting layer, an electron transport layer, and a cathode layer. On one aspect, the cathode layer of a transparent region of the present disclosure adopts a single-layer structure composed of a first cathode layer, and a cathode layer of the display region adopts a laminated structure composed of the first cathode layer and a second cathode layer disposed thereon. This can not only improve light transmittance of the transparent region, but also improve luminous efficiency of the display region.

A display structure is provided. The display structure includes: an array layer; a transparent anode layer disposed on the array layer; a light-emitting element layer disposed on the transparent anode layer; a light reflective layer disposed on the light-emitting element layer and sequentially including a reflective cathode layer, a cathode protection layer, and a reflective metal layer; and an encapsulation layer disposed on the light reflective layer. A reflective metal layer is added between the encapsulation layer and the reflective cathode layer, thereby increasing a light-emitting efficiency of a bottom-emission type organic light-emitting diode, further enhancing the moisture and oxygen block capability of the OLED device, and effectively improving the optical properties and the moisture and oxygen resistance of OLED display panels.

A display device includes a substrate on which a light emitting area and an auxiliary electrode contact part are defined; an auxiliary electrode which is formed on the substrate and is connected to a low potential driving power; a conductive layer which is formed on the auxiliary electrode in the auxiliary electrode contact part; an organic layer which covers the conductive layer; and a cathode electrode which is formed on the organic layer, and the conductive layer is formed of a material having a lower surface tension than that of the organic layer.

A display apparatus can include a first subpixel and a second subpixel disposed on a substrate; a first electrode in each of the first subpixel and the second subpixel; a light-emitting layer on the first electrode in each of the first and second subpixels; and a second electrode on the light-emitting layer, in which a structure of the first electrode in the first subpixel is different than a structure of the first electrode in the second subpixel.

A light-emitting display device includes: a substrate, a plurality of pixels on the substrate, each pixel including an opening area, a light extraction pattern disposed in each opening area, the light extraction pattern including: a plurality of concave portions spaced apart from each other, and a protruding portion surrounding each of the plurality of concave portions, and a light-emitting device layer including: a light-emitting layer over the light extraction pattern, and a non-emission area overlapping a top portion of the protruding portion between the two adjacent concave portions.