A display panel and a display device are provided. The display panel includes a substrate; an auxiliary metal layer, an anode layer, a pixel definition layer, a light-emitting layer, and a cathode layer, sequentially disposed on a side of the substrate. The pixel definition layer includes barrier wall structures defining openings exposing the anode layer, the light-emitting layer is at least located in openings, the cathode layer includes cathode blocks located in openings, and the auxiliary metal layer includes first metal wiring portions extending along a first direction; and cathode connection lines located among the cathode blocks. Cathode connection lines connect the cathode blocks in openings and, along a direction perpendicular to a plane of the substrate, at least a portion of the cathode connection lines are parallel to multiple first metal wiring portions adjacent to the portion of the cathode connections lines.

A light-emitting structure comprises a substrate, a sub-pixel stack patterned over the substrate, an insulating material patterned to surround the emissive stack, and a bank patterned to surround the sub-pixel stack and the insulating material. The sub-pixel stack comprises an emissive stack between a first electrode layer and a second electrode layer.

A display panel has a display area including a light-transmissive area. The display panel includes a substrate, and a plurality of shielding patterns, a plurality of light-emitting layers and a plurality of cathodes that are disposed in the light-transmissive area and on the substrate. Orthogonal projections of the plurality of shielding patterns on the substrate are separated from each other. Each light-emitting layer and a respective cathode constitute a portion of a light-emitting device. The light-emitting device has an active light-emitting area. An orthogonal projection of the active light-emitting area on the substrate is located within an orthogonal projection of a cathode of the light-emitting device on the substrate. The plurality of cathode is located at a side of a respective shielding patterns away from the substrate. An orthogonal projection of the shielding pattern on the substrate covers the orthogonal projection of the cathode on the substrate.

A display panel and a display device. The display panel includes a display area and a non-display area, a substrate and a conductive structure located on one side of the substrate. The conductive structure is located in the non-display area, and at least part of an edge of the conductive structure away from the display area overlaps a cutting edge of the substrate in a direction perpendicular to a plane of the substrate.

Embodiments described herein relate to sub-pixel circuits and methods of forming sub-pixel circuits that may be utilized in a display such as an organic light-emitting diode (OLED) display. The sub-pixel circuit includes a plurality of contact overhangs. The plurality of contact overhangs are disposed between adjacent sub-pixels of a sub-pixel circuit to be formed. The contact overhangs are formed over a metal grid exposed through a PDL structure. A cathode is deposited via evaporation deposition to be in contact with the contact overhang. The metal grid is perpendicular to a plurality of metal layers disposed on the substrate.

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 display panel includes: a base substrate having a base surface parallel to a plane defined by a first direction and a second direction; a circuit layer on the base substrate; a first electrode in a first region on the circuit layer; an auxiliary electrode in a second region on the circuit layer and spaced apart from the first electrode; an organic layer on the first electrode and the auxiliary electrode and including a plurality of openings overlapping the auxiliary electrode, and a second electrode on the organic layer, wherein: the second electrode is electrically connected to the auxiliary electrode via each of the plurality of openings; at least a portion of the organic layer includes a plurality of protrusions having a shape surrounding each of the plurality of openings.

A display device includes a light-emitting-element layer including a plurality of light-emitting elements each including a first electrode, a functional layer, and a second electrode. The plurality of light-emitting elements are formed to emit lights in different colors. A nanoparticle layer is provided on a surface of the first electrode toward a light-emitting layer, and contains metal oxide nanoparticles that are electrically conductive.

According to one embodiment, a display device includes a pixel electrode provided in each of a plurality of pixels, a bank provided between the adjacent pixel electrodes, an organic EL layer provided on the pixel electrode and provided in an opening of the bank, a common electrode provided over the first to third pixels, and an auxiliary electrode provided in at least one of the first to third pixels so as to overlap the common electrode and the organic EL layer.

A light emitting display device may include a circuit layer having an auxiliary power electrode disposed on a substrate, a protective layer covering the circuit layer, a contact portion exposing a portion of the auxiliary power electrode, and an undercut structure disposed on a portion of the auxiliary power electrode and configured to include an undercut region. The undercut region may be formed at at least a portion of the periphery of the undercut structure.