The disclosure provides a mirror (organic light-emitting diode) OLED device and a method of manufacturing same. A transparent cathode and a reflective cathode on an organic layer are made of two different material. The reflective cathode and the transparent cathode are disposed alternately. A periphery of the reflective cathode and a periphery of the transparent cathode are connected to each other, thereby improving conductivity of the entire cathode. A mirror OLED display device manufactured by the method has both a display function and a reflective function which will not interfere with each other. A flexible, large-scale mirror OLED display device with various shapes is realized.

The present invention provides an organic electroluminescent diode device, a display panel, and a manufacturing method thereof. The organic electroluminescent diode device includes a first electrode layer, a conductive layer, an electron injection layer, a light-emitting layer, a hole injection layer, and a second electrode layer, and the conductive layer is provided between the first electrode layer and the electron injection layer.

The present invention provides a double-sided e-paper display panel including a first substrate, a second substrate, a light isolation layer, a first display medium layer, a second display medium layer, a first electrode layer, and a second electrode layer. The second substrate and the first substrate are disposed opposite to each other. The light isolation layer is disposed between the first substrate and the second substrate. The first display medium layer is disposed between the first substrate and the light isolation layer. The second display medium layer is disposed between the light isolation layer and the second substrate. The first display medium layer and the second display medium layer include a fluid and a plurality of charged particles. The first electrode layer is disposed between the first substrate and the first display medium layer. The second electrode layer is disposed between the second display medium layer and the second substrate.

A display substrate and a manufacturing method thereof, a display panel and a display apparatus are provided. The display substrate includes a display area, and the display substrate further includes: a base substrate; and a plurality of sub-pixels on the base substrate and in the display area. Each of the plurality of sub-pixels includes a light emitting element, and the light emitting element includes a first electrode, a light emitting layer, and a second electrode which are sequentially provided on the base substrate. A region between the plurality of sub-pixels has an opening, and the second electrode does not extend into the opening.

The disclosure provides a display substrate and a manufacturing method thereof, a display panel and a display apparatus. The display substrate includes a substrate and an electroluminescent layer on the substrate. The display substrate further includes a first reflective electrode layer, a buffer layer and a second reflective electrode layer sequentially formed on a side of the electroluminescent layer distal to the substrate. The buffer layer is provided with a first hollow region, the second reflective electrode layer is provided with a second hollow region, an overlapping region between the first hollow region and the second hollow region is configured to transmit light emitted by the electroluminescent layer. The present disclosure can detect the light-emitting brightness of each sub-pixel in the organic electroluminescent layer in real time to improve light-emitting efficiency.

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.

A display panel is provided, which includes a light-emitting structure. The light-emitting structure includes an anode positioned on a thin film transistor layer, a luminescent material layer positioned on the anode, and a cathode covering the luminescent material layer. The light-emitting structure further includes a cathode reflective layer and a quantum dot film. The cathode reflective layer is positioned above the cathode and is electrically insulated from the cathode by a reflective isolation layer. The quantum dot film is positioned in the reflective isolation layer that is between the cathode and the cathode reflective layer.

An organic light-emitting diode device and a manufacturing method thereof, a display substrate, and a display device are provided. The organic light-emitting diode device includes an anode layer, an organic light-emitting layer and a cathode layer which are stacked. The organic light-emitting diode device further includes a self-repairing layer, and the self-repairing layer is arranged on a side of the cathode layer away from the anode layer, and the self-repairing layer is applicable for repairing the cathode layer by an oxidation-reduction reaction.

A display panel and a display device are provided. In an embodiment, the display panel includes: a substrate; a plurality of metal parts disposed above the substrate; and a plurality of light-emitting elements disposed at a side of the plurality of metal parts facing away from the substrate, each of the plurality of light-emitting elements including a first electrode, a light-emitting portion, and a second electrode stacked in sequence in a light-exiting direction of the display panel. In an embodiment, an orthographic projection of each of the plurality of metal parts on the substrate covers an orthographic projection of a respective one first electrode on the substrate. In an embodiment, the first electrode has a relatively flat surface, so the probability of mutual interference between the ambient light reflected by the first electrode is reduced, which can alleviate color dispersion of the display panel in a dark state.

An aromatic amine derivative represented by formula (1): ##STR00001##
wherein HAr.sup.1, Ar.sup.2, L.sup.1, L.sup.2, and L.sup.3 are as defined in the specification, is useful as a material for constituting an organic EL device and realizes an organic EL device having a high efficiency and a long lifetime even when driving at a low voltage.