An organic electroluminescent element includes, in order, a first electrode, an organic light-emitting layer, a metal thin film including a metal or a metal alloy, an organic electron transport layer doped with a metal, and a second electrode. The metal in the metal thin film is identical to the metal doped in the organic electron transport layer. The metal alloy in the metal thin film includes a metal identical to the metal doped in the organic electron transport layer.

A display device includes: a substrate including a first area, a second area and a third area; a first pixel electrode, a second pixel electrode and a third pixel electrode disposed in the first area, the second area and the third area, respectively, on the substrate; a sub-pixel electrode disposed on the third pixel electrode; a first emissive layer, a second emissive layer and a third emissive layer disposed on the first pixel electrode, the second pixel electrode and the sub-pixel electrode, respectively; and a common electrode disposed on entireties of the first emissive layer, the second emissive layer and the third emissive layer. The sub-pixel electrode includes an upper sub-electrode made of a transparent metal material and a lower sub-electrode having a distance-adjusting function.

A display backplane and a mobile terminal are provided. The display backplane includes a substrate, a plurality of pixel units disposed on the substrate, and a barrier layer disposed on the substrate. The pixel unit includes a reflection unit, the barrier layer includes a plurality of barriers arranged between two adjacent pixel units, and two adjacent reflection units are separately provided by the barriers.

In a display region of a display device, opening portions are formed in at least one layer of an inorganic insulating film making up a TFT layer in such a manner as to penetrate the inorganic insulating film to thereby expose an upper surface of a resin substrate, opening flattening films are provided in such a manner as to fill in the opening portions, and metallic layers are provided in such a manner as to cover upper surfaces of the opening flattening films.

A display device includes a substrate including an upper surface, a pixel circuit layer on the substrate and comprising a transistor, an insulating layer on the pixel circuit layer, the insulating layer defining a trench having a depth, and a first pixel electrode connected to the pixel circuit layer, the first pixel electrode having a thickness which is greater than the depth of the trench. The first pixel electrode includes a center area overlapping the trench, and a peripheral area which is adjacent to the center area, a lower surface corresponding to the center area and to the peripheral area, and a distance from the lower surface of the first pixel electrode to the upper surface of the substrate, in the center area, being smaller than a distance between the lower surface of the first pixel electrode and the upper surface of the substrate, in the peripheral area.

A display substrate, a manufacturing method and a display device are provided. The display substrate includes: a base substrate and a plurality of sub-pixels; a pixel definition layer arranged on the base substrate and including a plurality of pixel openings, a region where the pixel opening is located being an active light-emitting region of a corresponding sub-pixel; a plurality of post spacers arranged at a side of the pixel definition layer away from the base substrate and configured to support a mask in an evaporation process of the display substrate; and a reflection layer arranged between the post spacer and the base substrate. An orthogonal projection of each post spacer onto the base substrate at least partially overlaps an orthogonal projection of the reflection layer onto the base substrate.

An organic EL device includes organic layers, an anode electrode, a cathode electrode, and an insulating layer covering a part of the anode electrode. The anode electrode is disposed above a bank layer and in an opening of the bank layer. The organic layers cover the anode electrode and a part of the insulating layer. The anode electrode includes a lower conductive layer, a reflective metal layer that reflects light coming from the organic layers, and a light-transmissive upper conductive layer layered in this order toward the cathode electrode. The upper conductive layer includes a first upper conductive layer connected to the organic layers and a second upper conductive layer covered with the insulating layer. The second upper conductive layer has a lower oxygen content than the first upper conductive layer. The second upper conductive layer has a higher resistivity than the first upper conductive layer.

A display panel includes a drive backplane, a transparent insulating layer and a light-emitting device layer. The drive backplane includes a driving circuit layer, a metal wiring layer, a first insulating layer and a reflective electrode layer. The first insulating layer has first via holes filled with first metal connectors. The reflective electrode layer includes first reflective electrodes respectively connected with the metal wiring layer through the first metal connectors. The light-emitting device layer includes a pixel electrode layer, an organic light-emitting layer and a common electrode layer. The pixel electrode layer includes first pixel electrodes respectively connected with the first reflective electrodes through the connection via holes. A distance between an orthographic projection of the connection via hole on the pixel electrode layer and an edge of the first pixel electrode is not less than a first threshold value.

According to an embodiment, a display device includes a lower electrode, a rib including a pixel aperture, a partition including a lower portion and an upper portion, an organic layer covering the lower electrode through the pixel aperture, and an upper electrode covering the organic layer. The rib includes a taper portion which surrounds the pixel aperture and in which a thickness decreases toward the pixel aperture. The organic layer includes an end portion on the rib and a thickness deceasing portion in which a thickness decreases toward the end portion. Further, the thickness decreasing portion covers at least part of the taper portion.

According to one embodiment, a display device includes first and second lower electrodes, a rib including first and second pixel apertures, a first organic layer, a second organic layer, a first upper electrode, a second upper electrode, and a partition including a lower portion and an upper portion. The partition includes first and second portions. A first height from an upper surface of the first lower electrode overlapping the first pixel aperture to an upper surface of the first portion is different from a second height from an upper surface of the second lower electrode overlapping the second pixel aperture to an upper surface of the second portion.