Disclosed are an array substrate, a display panel and a display device. The array substrate includes: a base substrate, electroluminescent devices located on the base substrates, and a reflection structure located on the side away from light exiting surfaces of the electroluminescent devices, where the reflection structure includes at least two groups of Bragg reflectors configured to reflect visible light in preset wave bands, the preset wave bands reflected by the different groups of Bragg reflectors are different, the various preset wave bands do not completely overlap, wavelength ranges of light emitted by the electroluminescent devices overlap with wavelength ranges of light reflected by the Bragg reflectors corresponding to the electroluminescent devices.

A display device including: a substrate including a display area, a peripheral area, and a pad area; a first main voltage line in the peripheral area, and a first connector extending from the first main voltage line to the pad area; and a second main voltage line in the peripheral area, and a second connector extending from the second main voltage line to the pad area, wherein each of the first connector and the second connector includes a first and second layer overlapping each other with a first insulating layer therebetween, the first insulating layer is in the display area and the peripheral area, the peripheral area includes an open area exposing the first and second connector and surrounding the display area, and the first insulating layer includes slits between the first and second connector and extending from an end of the first insulating layer toward the display area.

A quantum dot light emitting diode and a method for manufacturing the same are provided, a display panel, and a display device, belonging to the display technical field. The quantum dot light emitting diode comprises: a base substrate; a first electrode, a first electron transport layer, a second electron transport layer, a quantum dot light emitting layer, a hole transport layer, a hole injection layer and a second electrode successively located on the base substrate, where a surface roughness of a side of the first electron transport layer away from the first electrode is less than a threshold, and the second electron transport layer is composed of nanoparticles.

A display device includes a display panel in which a plurality of pixels is defined, a back cover disposed on a rear surface of the display panel, a roller which is connected to the back cover to wind or unwind the back cover and the display panel, and a protective sheet which is disposed on a rear surface of the back cover and has a relatively small tensile strength in a rolling direction of the roller to reduce the stress generated during rolling and improve the lateral rigidity of the display unit.

A display device includes an anode electrode, an organic light emitting layer, and a first cathode electrode. Provided are a plurality of light emitting elements in which the anode electrode, the organic light emitting layer, and the first cathode are separated for each sub-pixel, a protective layer covering the plurality of light emitting elements, and a second cathode electrode provided on the protective layer. The second cathode electrode is connected to each separated first cathode electrode.

A light emitting system (1) intended for optical communication, which presents several OLEDs (2) whose activation allows to obtain different levels of light intensity corresponding to different levels of light modulation, and which comprises an organic optoelectronic device (3) of the OLED (2) type having actuatable zones (5) each with a specific geometric pattern, on a substrate (5) which supports a first layer (6) formed by a plurality of transparent or opaque and conductive anodes (6a, 6b, 6c) laterally separated by engravings (7); a second layer for insulation (8) on regions of the first layer (6), serving to electrically insulate the anodes (6a, 6b, 6c) and to guarantee the continuity of the two following layers and having a thickness e1; a third layer (9) of thickness e2 comprising at least one stack of organic layers (9a, 9b); a fourth layer of metal (10) with a thickness e3 having a plurality of cathodes (10a, 10b) laterally separated from one another and covering said stack of organic layers (9a, 9b), lateral separation profiles (11) of the cathodes (10a, 10b) and of the organic layers (9a, 9b), for electrically insulation the cathodes (10a, 10b), of thickness e4 greater than e1+e2+e3, deposited on the first layer (6) or on the second layer (8).

An optoelectronic device including at least one electromechanical transducer located vertically in line with at least one light-emitting diode, said at least one electromechanical transducer and said at least one light-emitting diode being connected to conductive tracks of a same transfer substrate.

A light field display includes one or more light field pixels. Each light field pixel includes differently colored light field subpixels that each project a pattern of light of a uniform (single) color. The differently colored light field subpixels are arranged close together such that a viewer perceives adjacent ones of the light field subpixels of different colors as blending together. The light field display may be formed of a lens array including lenslets, a monochrome LCD panel, and a color zoned backlight having differently colored zones respectively corresponding to the locations of the lenslets. The differently colored zones of the color zoned backlight respectively illuminate the differently colored light field subpixels.

A display device and a method for manufacturing the same are disclosed, in which a cathode electrode is not separated from an organic light emitting layer. The method includes forming pixels on a display area on a first substrate, forming an encapsulation film to cover the display area, attaching a protective film onto the encapsulation film, and removing the protective film. The protective film includes a substrate layer and an adhesive layer formed at an edge area of at least one side of the substrate layer.

A light-emitting element is provided with an interlayer organic layer having electron transport properties. At a HOMO level, an energy level difference between a first hole transport layer and the second hole transport layer is from 0.0 eV to 0.20 eV, and at a LUMO level, an energy level difference between a first electron transport layer and a second electron transport layer, and an energy level difference between the first electron transport layer and the blue light-emitting layer are each from 0.0 eV to 0.20 eV. Alternatively, the light-emitting element is provided with the interlayer organic layer between the electron transport layer and the cathode electrode, the electron transport layer is formed from a lithium quinolate complex and an organic compound having electron transport properties, and the interlayer organic layer is formed from an organic compound including an amino group or a hydroxyl group.