Provided are an organic electroluminescence device, which shows high luminous efficiency, is free of any pixel defect, and has a long lifetime, and a material for an organic electroluminescence device for realizing the device. The material for an organic electroluminescence device is a compound having a π-conjugated heteroacene skeleton crosslinked with a carbon atom, nitrogen atom, oxygen atom, or sulfur atom. The organic electroluminescence device has one or more organic thin film layers including a light emitting layer between a cathode and an anode, and at least one layer of the organic thin film layers contains the material for an organic electroluminescence device.

A device having a layered structure that includes a layer of phase change material and a matrix material layer having embedding quantum emitters is tuned. An electric field is applied through the matrix material layer and the layer of phase change material to change the emission wavelengths of the quantum emitters. A phase of the phase change material is changed, in a non-volatile manner, in each of one or more of local areas of the phase change material, to form local alterations that are opposite to respective ones of the quantum emitters in the matrix material layer, to locally modify the electric field at the respective quantum emitters.

A method for depositing a conductive coating on a surface is provided, the method including treating the surface by depositing fullerene on the surface to produce a treated surface and depositing the conductive coating on the treated surface. The conductive coating generally includes magnesium. A product and an organic optoelectronic device produced according to the method are also provided.

A display panel is provided, including a substrate and an organic light-emitting component disposed on the substrate. The display panel further includes a planarization layer and an insulation layer disposed on the planarization layer. An anode of the organic light-emitting component is disposed on the planarization layer. The insulation layer is disposed on the planarization layer and configured to cover the planarization layer, and the anode of the organic light-emitting component is exposed through the insulation layer.

The embodiments provide a process and an apparatus for easily producing a transparent electrode of low resistance and of high transparency. The process comprises: coating a hydrophobic polymer film with a dispersion of metal nanowires, press-bonding an electroconductive substrate directly onto the metal nanowires on the polymer film, and peeling and transferring the metal nanowires from the polymer film onto the conductive substrate. The embodiments also relates to an apparatus for the process.

A compound of Formula 1, as disclosed herein, is useful in an organic light emitting device and apparatuses including the same.

Disclosed are a display panel in which a unit pixel is divided into a wide-angle area and a narrow-angle area in which at least sub-pixel is disposed and light emission is individually and selectively performed, a display device including the same, and a manufacturing method thereof. A semi-cylindrical lens is disposed in the wide-angle area so as to cover a plurality of sub-pixels. Semi-spherical lenses are disposed in the narrow-angle area so as to cover sub-pixels respectively. Therefore, a direction of light emitting from a light-emitting layer is controlled by adjusting a refractive index of each of the lenses in the wide-angle area and the narrow-angle area. Thus, a viewing angle is controlled.

The present disclosure provides an organic light-emitting display substrate and a display device. The display substrate includes a base substrate, a driving circuit layer on the base substrate and a light-emitting device on one side of the driving circuit layer away from the base substrate. The light-emitting device includes a first electrode layer including separated first electrode patterns. The display substrate further includes a reflective metal layer insulated from the first electrode layer. An orthographic projection of each reflective metal pattern onto the base substrate overlaps an orthographic projection of at least two first electrode patterns onto the base substrate, which can appropriately reduce a thickness of an anode layer due to the presence of the reflective metal layer, thereby reducing segment difference of the light-emitting layer near the anode, improving the uniformity of the light-emitting layer, and improving performance of the display panel.

Exemplary methods of backplane processing are described. The methods may include forming a first metal oxide material on a substrate. The methods may include forming a metal layer over the first metal oxide material. The metal layer may be or include silver. The methods may include forming an amorphous protection material over the metal layer. The amorphous protection material may include a second metal oxide material. The methods may include forming a second metal oxide material over the amorphous protection material. The second metal oxide material may include a crystalline material having one or more grain boundaries. The grain boundaries may include one or more voids.

The present invention discloses a light-emitting electrochemical cell, which includes a first electrode, a light-emitting layer, and a second electrode which are stacked, wherein the light-emitting layer includes a light-emitting material and an ion conductive polymer. The present invention also discloses an electroluminescent display device, including a glass substrate, a thin film transistor, a light-emitting electrochemical cell, a protective layer, and a polarizer. Embodiments of the present application provide a light-emitting electrochemical cell and an electroluminescence display device, wherein the electro-luminescence display device is construed by providing a simple structure and manufacturing process to the light-emitting electrochemical cell, and therefore the manufacturing cost is reduced, and the production efficiency is improved.