An electroluminescent device includes a light-emitting element, a drive transistor that supplies a driving current corresponding to a gradation voltage to the light-emitting element, a first conductive layer that is electrically connected to a gate of the drive transistor, and a second conductive layer that is supplied a fixed potential and that is disposed on a same layer as the first conductive layer. The first conductive layer and the second conductive layer are disposed apart and electrically insulated from one another, and in plan view, the first conductive layer is surrounded by the second conductive layer.

An OLED device includes a substrate having a display region including a pixel region and first and second peripheral regions surrounding the pixel region. A bending region is between the display region and the second peripheral region. A buffer layer has a first opening exposing an upper surface of the substrate. A plurality of pixel structures is disposed in the pixel region on the buffer layer. An insulation layer structure is disposed on the buffer layer. The insulation layer structure has a second opening exposing an upper surface of the substrate that is disposed in the bending region and a first portion of the buffer layer that is disposed adjacent to the bending region. A fan-out wiring is disposed between two adjacent insulation layers of the plurality of insulation layers. The fan-out wiring is disposed in the first peripheral region and/or the second peripheral region.

A display substrate, a manufacturing method therefor and a pixel driving circuit, the display substrate includes: a base substrate; a first conductive layer, which includes a first signal line, a second signal line, and an additional pad layer, on the base substrate; a pixel defining layer on the first conductive layer and having an opening; and an electroluminescent material layer in the opening and including a first end portion and a second end portion, an orthographic projection of the first end portion on the base substrate falls within that of the first signal line, an orthographic projection of the second end portion on the base substrate falls within that of the additional pad layer, and the orthographic projections of the first end portion and the second end portion are respectively located on both sides of an orthographic projection of the second signal line on the base substrate.

A display device includes a substrate provided with a plurality of pixels, a circuit element layer provided on the substrate and provided with an auxiliary electrode, an insulating layer provided on the circuit element layer and provided with a plurality of connection electrodes spaced apart from one another and a first trench, a fence structure provided on the plurality of connection electrodes, an organic light emitting layer provided on the fence structure, and a second electrode arranged on the organic light emitting layer, wherein the plurality of connection electrodes are electrically connected with the auxiliary electrode, at least one of the plurality of connection electrodes is exposed from the first trench, and the second electrode is in contact with a connection electrode exposed from the first trench. Therefore, a luminance difference between an outer portion of a panel and a center portion of the panel may be reduced.

A display panel and a display device are provided, and the display panel includes a bonding area, a thin film transistor functional layer, and a conductive structure layer disposed in order. A part of the thin film transistor functional layer disposed on the bonding area includes a first inorganic layer and a plurality of signal lines. The conductive structure layer includes a second inorganic layer and a conductive layer disposed in order, and a part of the second inorganic layer disposed in the bonding area is disposed on the signal line and is directly disposed on the first inorganic layer.

A display device includes: a substrate; an insulating layer on a top surface of the substrate; a plurality of light-emitting diodes on the insulating layer and including two light-emitting diodes spaced apart from each other and having a transmission area therebetween; an encapsulation member covering the plurality of light-emitting diodes; and a rear cover layer located on a rear surface of the substrate and including a first portion located in the transmission area, wherein the first portion includes a transparent material.

A method of manufacturing a display apparatus includes forming a thin-film transistor on a substrate and forming a planarization layer to cover the thin-film transistor, forming, on the planarization layer, a pixel electrode electrically connected to the thin-film transistor and a pixel defining layer exposing at least a center portion of the pixel electrode, and defining at least one groove having a closed curve shape at a location corresponding to a second non-display area. When the thin-film transistor is formed, a voltage line is also formed at a location corresponding to a first non-display area. When the at least one groove is formed, a portion of the planarization layer disposed between the pad area and the display area is simultaneously removed such that a portion of the voltage line between the pad area and the display area is exposed.

Disclosed are a display substrate, a preparation method therefor, and a display device. The display substrate includes a display region and a binding region on one side of the display region. The binding region includes a binding structure layer disposed on a base. The binding structure layer includes a composite insulating layer disposed on the base. The binding region further includes a step structure formed by the base and the composite insulating layer. Heights of steps in the step structure decrease sequentially in the direction away from the display region. In the step structure, the base forms a first step having the smallest height. The binding structure layer further includes a signal connection wire having at least a portion thereof the disposed on the step structure and located on the first step. An opening exposing the signal connection wire is provided on the base at the first step.

A pixel includes a light emitting element including an anode and a cathode, a first transistor connected between the anode and a first power line and switched by a voltage of a node, a second transistor connected between the first transistor connected to the first power line and a data line and switched by a write scan signal, a third transistor connected between the node and the anode and switched by a compensation scan signal, and an insulating layer covering the second and third transistors. A first groove is defined in a portion of the insulating layer adjacent to the third transistor.

A display apparatus having a connection electrode which crosses a bending area may be provided. The connection electrode may be disposed on a device substrate including a bending area between a display area and a pad area. The connection electrode may connect the display area and the pad area across the bending area. The connection electrode may have a stacked structure of the lower connecting electrode and the upper connecting electrode. A light-emitting device, an encapsulating element and a touch electrode may be sequentially stacked on the display area of the device substrate. The upper connecting electrode may include the same material as the touch electrode. Thus, in the display apparatus, the disconnection of the connection electrode due to bending stress and external impact may be reduced.