A display device includes a first pixel electrode disposed on a substrate and including a main portion and an edge portion, a pixel defining film disposed on the substrate, including a body portion and a protrusion portion, and exposing the first pixel electrode, a first light-emitting layer on the first pixel electrode, a first common electrode on the first light-emitting layer, a first bank layer on the pixel defining film, and a second bank layer disposed on the first bank layer and including a side surface protruding further than a side surface of the first bank layer. A thickness of the edge portion of the first pixel electrode is greater than a thickness of the main portion of the first pixel electrode, and a width of the protrusion portion of the pixel defining film is greater than a width of the edge portion of the first pixel electrode.

According to one embodiment, a display device includes a base electrode including a first reflective layer, a lower electrode including a second reflective layer and provided on the base electrode, and a rib which covers an edge portion of the base electrode and has a pixel aperture overlapping the lower electrode. A width of the base electrode is greater than a width of the lower electrode.

Display panels are provided according to embodiments of the present disclosure. The display panel includes a substrate, anodes disposed on the substrate, and a pixel definition layer. The anodes include at least one first sub-anode and at least one second sub-anode adjacent to first sub-anode. A difference between a first distance between a side of the first sub-anode away from the substrate and the substrate and a second distance between a side of the second sub-anode away from the substrate and the substrate is greater than or equal to a thickness of the second sub-anode.

A display apparatus with high display quality is provided. The display apparatus includes a pixel portion and a dummy pixel portion placed outside the pixel portion and not contributing to display; the pixel portion includes a plurality of light-emitting devices; each of the light-emitting devices includes a pixel electrode, a first layer that includes a light-emitting layer, and a common electrode; the first layers of adjacent pixels of a plurality of pixels are separated by a first insulating layer containing an inorganic material and a second insulating layer containing an organic material; the side surface of the first layer includes a region in contact with the first insulating layer; the second insulating layer is over and in contact with the first insulating layer and is placed below the common electrode; the dummy pixel portion includes a plurality of dummy light-emitting devices; each of the dummy light-emitting devices includes a conductive layer and a second layer; the side surface of the second layer includes a region in contact with the first insulating layer; the second insulating layer is over and in contact with the first insulating layer; the conductive layer contains the same material as the pixel electrode; and the second layer contains the same material as the light-emitting layer.

A display panel includes a driving backplane, a first electrode layer, a pixel definition layer, a light-emitting layer and a second electrode. The first electrode layer is disposed on one side of the driving backplane and includes a plurality of first electrodes. The pixel definition layer is arranged on the side, same as the first electrode layer, of the driving backplane and being provided with a pixel opening exposing each of the first electrodes. The pixel definition layer is provided with a separation slot formed between adjacent ones of the first electrodes; and a first cut-off slot is provided on a sidewall of the pixel definition layer. The light-emitting layer covers the cut-off layer and the first electrode layer. The second electrode covers the light-emitting layer.

A semiconductor device according to an embodiment includes: a plurality of pixels arrayed in a two-dimensional matrix shape; and a partition wall disposed between the pixels, the partition wall partitioning each of the pixels, in which each of the pixels includes: a first electrode provided on a substrate; an antireflection film provided on at least a part of a peripheral portion of the first electrode; a light emitting layer provided on the first electrode; and a second electrode provided on the light emitting layer.

A light-emitting element includes: a first electrode including a first conductive layer and a second conductive layer, the first conductive layer being provided with a flat surface serving as an upper surface and reflecting visible light, and the second conductive layer being provided on the flat surface, transmitting the visible light, and including a first region having a first thickness, a second region positioned around the first region and having a second thickness thicker than the first thickness, and a third region positioned around the second region and having a third thickness thicker than the second thickness; a functional layer including at least a light-emitting layer and formed on the second conductive layer in conformity with a shape of the second conductive layer, and a second electrode formed on the functional layer and transmitting the visible light; and an edge cover containing at least one of a scattering material to scatter the visible light or a light-blocking material to block the visible light, covering at least a portion of an end portion of the first electrode, and formed higher than the second electrode.

A display substrate and a method of manufacturing the display substrate are provided. The display substrate includes a base substrate and a plurality of sub-pixels. A first electrode of a light-emitting element of the sub-pixel includes: a first conductive layer electrically connected to a source or a drain of a driving transistor of the sub-pixel; a second conductive layer; and a transparent material layer. The transparent material layer includes a first transparent material sub-layer and a second transparent material sub-layer, the first transparent material sub-layer is between the second transparent material sub-layer and the second conductive layer, the second transparent material sub-layer covers the first transparent material sub-layer, and an edge of the first transparent material sub-layer is aligned with an edge of the second conductive layer.

A display panel includes a base layer, a circuit layer disposed on the base layer, and a light emitting element disposed on the circuit layer. The light emitting element includes a barrier layer including a metal and a metal oxide, a hydrogen supply layer disposed on the barrier layer, and including an inorganic material, a first electrode disposed on the hydrogen supply layer, a light emitting layer disposed on the first electrode, and including a quantum dot, and a second electrode disposed on the light emitting layer.

A display panel includes a light-emitting element and a pixel defining film having a pixel opening defined therein. The light-emitting element may include a first electrode exposed through the pixel opening, a second electrode disposed on the first electrode, and at least one functional layer disposed between the first electrode and the second electrode. The first electrode may include a first layer including an aluminum alloy, a second layer including a transparent conductive oxide, and an anti-oxidation layer including titanium nitride (TiN) and disposed between the first layer and the second layer. When the atomic percentage is about 100 at %, the percentage of alloy atoms excluding aluminum atoms in the aluminum alloy may be about 0.01 at % to about 0.1 at %.