Abstract: A display device includes a substrate and a pixel provided on the substrate. The pixel includes a light-emitting portion including a plurality of light-emitting elements and configured to generate light, and a light-exiting portion adjacent to the light-emitting portion. The light-exiting portion includes a first light-reflecting portion provided on an incline on the substrate and configured to receive and reflect the light from the light-emitting portion, and an opening configured to emit the light reflected by the first light-reflecting portion to the outside. At least some of the plurality of light-emitting elements are formed by being layered.

Abstract: A light-emitting element includes: a first electrode; a second electrode; and a light-emitting layer between the first electrode and the second electrode, wherein the light-emitting layer includes quantum dots and a cyclic organic compound, and at least some of atoms that form a ring of the cyclic organic compound are coordinated to the quantum dots.

Abstract: The electroluminescent element includes an anode electrode, a cathode electrode, and a quantum dot (QD) layer including quantum dots and arranged between the anode electrode and the cathode electrode. The quantum dots are Cd-free quantum dots that include at least Zn and Se, and do not include Cd at a mass ratio of 1/30 or greater in relation to Zn. The particle size of each quantum dot is within a range from 3 nm to 20 nm.

Abstract: A light-emitting element includes an anode, an HTL, an EML, an ETL, and a cathode layered in this order, the HTL includes at least one protruding portion protruding in a layering direction, and an IL overlapping the protruding portion in a plan view is provided between the protruding portion and the EML.

Abstract: A light-emitting element according to the present invention includes an anode, a hole transport layer, and a light-emitting layer containing a quantum dot, and a cathode in this order, and the hole transport layer includes an n+-type semiconductor layer, and a p+-type semiconductor layer adjacent to the n+-type semiconductor layer and disposed closer to the light-emitting layer than the n+-type semiconductor layer (24).

Abstract: The light-emitting device includes a thin film transistor having a channel layer made of a first n-type semiconductor; a cathode electrically connected to a drain of the thin film transistor and made of a second n-type semiconductor; an anode facing the cathode; and a light-emitting layer provided between the cathode and the anode.

Abstract: A light-emitting device includes a light-emitting layer, an electron transport layer provided on the light-emitting layer, and a cathode provided on the electron transport layer. A main component of the cathode is a metal boride. With the above configuration, a work function of the cathode is reduced and electron injection efficiency is improved. As a result, luminous efficiency of the light-emitting device is improved.

Abstract: A method for manufacturing a display device includes: a step of forming a first recess, in a planarization film, overlapping a first lower electrode; a step of forming a first lower functional layer in the first recess to have a thickness lower than a depth of the first recess; a step of disposing a first screen, which has an opening corresponding to the first recess, on the planarization film, and coating the first lower functional layer with a first light-emitting layer; a step of sliding a squeegee in contact with the first screen to squeegee the first light-emitting layer and, after the squeegeeing, removing the first screen; and a step of sliding the squeegee in contact with the planarization film to squeegee the first light-emitting layer again.

Abstract: A light-emitting device includes an HTL including a metal chalcogenide between an anode and an EML, with an IL including an organic material at least between the HTL and the EML. A distance between the HTL and the EML in a light-emitting element that emits light in a wavelength band having the shortest light emission peak wavelength is greater than a distance between the HTL and the EML in each of the other light-emitting elements.

Abstract: A display device includes: a first subpixel including a quantum dot light-emitting layer configured to emit light of a first color: a second subpixel including a quantum dot light-emitting layer configured to emit light of a second color different from the light of the first color: a third subpixel including a quantum dot light-emitting layer configured to emit light of a third color different from the light of the first color and the light of the second color: and a data processing circuit configured to receive a first input data corresponding to the first subpixel, a second input data corresponding to the second subpixel, and a third input data corresponding to the third subpixel. The data processing circuit generates first output data corresponding to a first data voltage supplied to the first subpixel by using the first input data, the second input data, and the third input data.

Abstract: A light-emitting device includes a light-emitting part. The light-emitting part contains a quantum dot. The quantum dot has a core and a shell. The shell is located outside the core. Each of the core and the shell has a hexagonal structure. The lattice constant of the core is larger than the lattice constant of the shell.

Abstract: An electroluminescent element including an anode, a cathode, and a light-emitting layer provided between the anode and the cathode, in which the electroluminescent element further includes an electron transport layer including n-type semiconductor particles and a first insulating polymer, and a hole transport layer including p-type semiconductor particles, the electron transport layer is provided between the cathode and the light-emitting layer, the hole transport layer is provided between the anode and the light-emitting layer, and a volume proportion of the n-type semiconductor particles in the electron transport layer is smaller than a volume proportion of the p-type semiconductor particles in the hole transport layer.

Abstract: A light-emitting device includes, on a substrate, a red pixel electrode and a green pixel electrode, a common electrode, and a blue pixel electrode, in order from the substrate side, and includes a transparent region adjacent to a light-emitting region including a position overlapping the red light-emitting layer, the green light-emitting layer, and the blue light-emitting layer in a plan view. At least a part of the blue light-emitting layer overlaps the red light-emitting layer and the green light-emitting layer adjacent to the red light-emitting layer in the plan view.

Abstract: A light-emitting element includes: a first electrode; a first carrier transport layer in electrical contact with the first electrode; a second electrode separated from the first electrode; a second carrier transport layer in electrical contact with the second electrode; and a light-emitting layer, wherein at least part of the light-emitting layer overlaps on part of the first carrier transport layer, and part of the light-emitting layer overlaps on part of the second carrier transport layer, and in plan view, the first carrier transport layer and the second carrier transport layer face each other with the light-emitting layer provided in between.

Abstract: A light-emitting device includes a first sub-pixel provided with a first light emitter, and a second sub-pixel provided with a second light emitter and constituting, together with the first sub-pixel, one of a plurality of pixels. The first light emitter has a first cathode, a first anode, and a first light-emitting layer containing a first quantum dot and disposed between the first cathode and the first anode. The second light emitter has a second cathode, a second anode, and a second light-emitting layer containing a second quantum dot and disposed between the second cathode and the second anode. The second quantum dot emits light having a longer light-emission wavelength than the first quantum dot. The first light-emitting layer is thicker than the second light-emitting layer.

Abstract: A light-emitting element includes, in order of listing, an anode, an hole transport layer, an emission layer, and a cathode. The light-emitting element includes an reducing material disposed in at least a part between the anode and the hole transport layer, being in contact with the anode and the hole transport layer, and containing a reducing material that reduces a layer having the hole transport layer. The reducing material contains, in a structure of the reducing material, hydrogen either at a concentration ratio of 1 to 1 with resect to a base metal, or at a larger concentration ratio than the base metal.

Abstract: A light-emitting device of a transmissive type includes, as subpixels, a red subpixel including a red light-emitting layer, a green subpixel including a green light-emitting layer, and a blue subpixel including a blue light-emitting layer arranged in parallel with one another. The display light-emitting device includes an opaque region that overlaps at least the red subpixel and the green subpixel, each in its entirety, in a plan view and blocks background light, and a transparent region that overlaps at least a portion of the blue subpixel in a plan view and transmits background light.

Abstract: A light-emitting device includes a light-emitting layer containing: quantum dots serving as light emitters; and dummy flakes not involved in emitting light. The quantum dots are localized. Thanks to such features, light generated from the quantum dots is diffracted in the light-emitting layer, directed in a normal direction that is a thickness direction of an array substrate, and emitted out of the light-emitting device.

Abstract: A light-emitting layer of a light-emitting element contains halogen ligands and organic ligands coordinated to each of quantum dots. The light-emitting layer includes: a first region toward a hole-transport layer; and a second region toward an electron-transport layer. In the first region, a concentration of the halogen ligands is higher than a concentration of the organic ligands, and, in the second region, the concentration of the halogen ligands is lower than the concentration of the organic ligands.

Abstract: A display device comprises: a display region having a plurality of pixels; and a frame region, the display region including: a thin-film transistor layer; a light-emitting-element layer provided above the thin-film transistor layer; and a sealing layer provided above the light-emitting-element layer, the light-emitting-element layer including: a first electrode; a second electrode; a light-emitting layer provided between the first electrode and the second electrode; and an electron-transport layer provided between the light-emitting layer and the second electrode, and the electron-transport layer containing: nanoparticles of metal oxide; and a binding resin.