A transparent LED display includes a transparent substrate, pairs of electrodes arranged in an array on the transparent substrate, LEDs each arranged between a corresponding one of the pairs of electrodes, and apertures provided on the transparent substrate, the apertures being areas free of the electrodes and allowing light to pass through, wherein the LEDs are arranged on both of a first surface and a second surface of the transparent substrate, and each of the electrodes on the second surface is arranged in a second surface shielding region including a region that shields a light path extending from one of the LEDS arranged on the first surface through the transparent substrate, and each of the electrodes on the first surface is arranged in a first surface shielding region including a region that shields a light path extending from the LEDs on the second surface through the transparent substrate.

A display device includes a lower substrate, a bonding electrode disposed on the lower substrate, and a light emitting element disposed on the bonding electrode. The bonding electrode includes a first bonding metal layer and a second bonding metal layer sequentially disposed on the lower substrate, each including a bonding metal, a third bonding metal layer disposed between the first bonding metal layer and the second bonding metal layer, and including the bonding metal, a first thin film layer disposed between the first bonding metal layer and the third bonding metal layer, and a second thin film layer disposed between the second bonding metal layer and the third bonding metal layer, and the first thin film layer and the second thin film layer include a material with an atomic volume that is greater than or equal to about 80% of an atomic volume of the bonding metal.

A micro LED display panel and a display device are provided. The micro LED display panel includes: a plurality of micro LED elements each including a first semiconductor layer, a light emitting layer, and a second semiconductor layer stacked from top down; and a plurality of contact pads each arranged between adjacent micro LED elements of a part of the plurality of micro LED elements and conductively coupled to the respective first semiconductor layers of the adjacent micro LED elements.

A micro LED element, a micro LED display panel, and a display device are provided. The micro LED element includes: a first semiconductor layer, a light emitting layer, and a second semiconductor layer stacked from top down, wherein the first semiconductor layer includes: a main part for passing light generated by the light emitting layer; and an extension part for connecting to the extension part of the first semiconductor layer of an adjacent micro LED element; and a metal contact including a plurality of metal particles arranged on or above the extension part of the first semiconductor layer.

A display device includes: a substrate; circuit elements on the substrate; an insulating layer on the circuit elements and defining via holes, each of the via holes overlapping one of the circuit elements; reflective electrodes on the insulating layer and each overlapping one of first to third light-emitting areas; anode electrodes, each on a corresponding one of the reflective electrodes and each overlapping the corresponding reflective electrode; a light-emitting structure on the anode electrodes; a cathode electrode on the light-emitting structure; and via electrodes in the via holes of the insulating layer between the circuit elements and the reflective electrodes to connect the circuit elements and the reflective electrodes to each other, wherein a distance between one reflective electrode and its corresponding anode electrode that overlaps the reflective electrode is different from a distance between another reflective electrode and its corresponding anode electrode that overlaps the other reflective electrode.

Provided is a display device including a substrate and a display element layer disposed on the substrate. The display element layer includes an anode electrode and a cathode electrode, a first bonding metal disposed between the anode electrode and the cathode electrode, a first reflective electrode disposed on the anode electrode, a second reflective electrode disposed on the cathode electrode, a light emitting element including a first element electrode, a second element electrode, and a second bonding metal, a first transparent electrode electrically connecting the first reflective electrode and the first element electrode to each other, and a second transparent electrode electrically connecting the second reflective electrode and the second element electrode to each other.

A display device includes an anode electrode; a cathode electrode disposed on the anode electrode; a light-emitting element disposed between the anode electrode and the cathode electrode; and an auxiliary electrode surrounding a side surface of the light-emitting element. The light-emitting element includes a bonding electrode connected to the anode electrode; a light-emitting member including a first semiconductor layer connected to the bonding electrode, a second semiconductor layer connected to the cathode electrode and disposed on the first semiconductor layer, and an active layer disposed between the first and second semiconductor layers; and an insulating film covering at least a side surface of the light-emitting member. A portion of the auxiliary electrode that surrounds the side surface of the light-emitting element is disposed above an upper surface of the active layer.

Provided is a display device including a lower substrate, a bonding electrode disposed on the lower substrate, a reflective electrode disposed on the bonding electrode, and a light-emitting element disposed on the reflective electrode, wherein the reflective electrode includes a reflective layer disposed between the bonding electrode and the light-emitting element and having a shape corresponding to that of the light-emitting element in a plan view, and a capping film covering a side surface of the reflective layer.

A display device includes a substrate and a display element layer disposed on the substrate. The display element layer includes: an anode electrode and a cathode electrode; a first reflective electrode disposed on the anode electrode; a second reflective electrode disposed on the cathode electrode; a light emitting element including a first protective electrode, a second protective electrode, a first element electrode disposed at an inner side of the first protective electrode, and a second element electrode disposed at an inner side of the second protective electrode; a first transparent electrode electrically connecting the first reflective electrode to the first protective electrode; and a second transparent electrode electrically connecting the second reflective electrode to the second protective electrode.

A display device includes a display element layer disposed on a substrate. The display element layer includes an anode electrode and a cathode electrode; a first reflective electrode disposed on the anode electrode; a second reflective electrode disposed on the cathode electrode; a light emitting element including a first semiconductor layer, a second semiconductor layer, and an insulative film; a first transparent electrode directly electrically connecting the second semiconductor layer to the first reflective electrode; and a second transparent electrode directly electrically connecting the first semiconductor layer to the second reflective electrode.