A first metal layer provided on a resin substrate layer, a flattening film provided on the first metal layer, a second metal layer and a plurality of organic EL elements provided on the flattening film, and a sealing film covering the plurality of organic EL elements are provided. An organic layer provided in the sealing film includes a circumferential end edge positioned in a frame region. A slit overlapping the circumferential end edge of the organic layer is formed in an outer side of the flattening film. The first metal layer and the second metal layer are in contact with each other inside the slit. An opening is formed in a metal layer of the first metal layer and the second metal layer, the opening exposing an interlayer insulating film from the metal layer of the first metal layer and the second metal layer at a position at which the organic layer and the slit overlap each other.

An organic EL device includes a substrate including a light-emitting element, a mounting terminal, and a protective film that is provided on the light-emitting element and that has an opening portion overlapping with the mounting terminal in plan view. The substrate has recessed portion that communicates with the opening portion.

An organic EL device includes a substrate including a light-emitting element, a mounting terminal, and a protective film that is provided on the light-emitting element and that has an opening portion overlapping with the mounting terminal in plan view. The substrate has recessed portion that communicates with the opening portion.

In the second area, the lower base surface of the wirings is in contact with the first inorganic insulating film including a stepped portion including upper surfaces having mutually different heights and being adjacent to each other in the second direction, and a stepped surface rising from the upper surfaces except the uppermost surface. The first inorganic insulating film constitutes at least the upper surfaces except the lowest surface, and the stepped surface. The adjacent wirings include a pair of convex portions protruding toward a direction facing each other. One and the other of the pair of convex portions are separated to face each other at a position where the stepped portion does not exist in the second area in the first inorganic insulating film.

A method of manufacturing a display device includes: the first substrate preparation step of preparing a first substrate including insular, first electrodes, one for each of the plurality of subpixels; the second substrate preparation step of preparing a second substrate including a second electrode; the subpixel-specific layer forming step of forming insular subpixel-specific layers, one for each of the first electrodes, on either one or both of a top face of the first substrate and a top face of the second substrate; the nanoparticle layer forming step of forming a nanoparticle layer including a stack of nanoparticles on either one or both of the topmost face of the first substrate and the topmost face of the second electrode; and the bonding step of bonding the first substrate and the second substrate together via the nanoparticle layer in such a manner that the first electrodes face the second electrode.

A display device includes a first electrode, a second electrode, a light-emitting layer provided between the first electrode and the second electrode, and a charge transport layer provided between the first electrode and the second electrode and containing a charge transport material configured to transport a charge to the light-emitting layer. At least one layer of the light-emitting layer and the charge transport layer is a function layer including a nanofiber and a photosensitive material.

A display device provided with an image capturing function is provided. A display device with both high viewing angle characteristics and high image capturing performance is provided. The display device includes a light-emitting and light-receiving element and a color filter. The light-emitting and light-receiving element includes a light-emitting and light-receiving region having a function of emitting light of the first color and a function of receiving light of the second color. The color filter is positioned over the light-emitting and light-receiving element and has a function of transmitting the light of the first color and a function of blocking the light of the second color. The color filter includes an opening portion. The light-emitting and light-receiving region includes a portion positioned in the inside of the opening portion in the plan view.

Disclosed is a display device including: a substrate; a first insulating film over the substrate, the first insulating film exposing a part of the substrate to provide an exposed surface to the substrate; a second insulating film in contact with the exposed surface and a first side surface of the first insulating film; and a first wiring over the second insulating film and in contact with the exposed surface, the first insulating film, and the second insulating film. The display device may further possess a third insulating film spaced from the second insulating film and in contact with the exposed surface. The first insulating film has a second side surface opposing the first side surface through the exposed surface. The third insulating film may be in contact with the second side surface, and the wiring may be located over and in contact with the third insulating film.

A novel functional panel that is highly convenient or reliable is provided. A novel display device is provided. The functional panel includes an optical element, a first insulating film, and a region. The optical element has a first refractive index; the optical element is a concave lens; the optical element has a first surface and a second surface; the optical element has a first cross section on a first plane; the first surface forms a first curve in the first cross section; the first curve has a first radius of curvature; the second surface faces the first surface; the second surface is irradiated with first light; the first insulating film is interposed between the optical element and the region; the first insulating film is in contact with the second surface; the region overlaps with the second surface; the region faces the second surface; the region emits the first light; and a distance L1 is a distance between the region and the second surface. The distance L1 has a relationship with the first radius of curvature R1 and the first refractive index N1 represented by the following formula: L1≤5×R1/(N1−1).

Provided is a display device capable of suppressing deterioration in reliability. A display device includes: a plurality of light-emitting elements; a contact portion provided around a region in which the plurality of light-emitting elements are formed; an insulating layer having a step on the contact portion; and a protective layer covering the light-emitting elements, the contact portion, and the insulating layer. The light-emitting element includes: a first electrode; a second electrode having a peripheral portion connected to the contact portion; and a light-emitting layer provided between the first electrode and the second electrode. The step rises in a direction from an inner side of the display device toward an outer circumference side, and A peripheral edge of the second electrode is provided closer to the region than the step.