A high-resolution display device and a fabrication method thereof are provided. The display device includes a first insulating layer; a light-emitting element and a first conductive layer over the first insulating layer; a first layer over the first conductive layer; a second conductive layer over the first layer; a second insulating layer over the light-emitting element, the second conductive layer, and the first insulating layer; and a third conductive layer over the second insulating layer. The light-emitting element includes a fourth conductive layer, a second layer over the fourth conductive layer, a third layer over the second layer, and a fifth conductive layer over the third layer. The third conductive layer includes a region in contact with the second conductive layer through a first opening formed in the second insulating layer and a region in contact with the fifth conductive layer through a second opening formed in the second insulating layer; the second layer contains a light-emitting compound; the first conductive layer and the fourth conductive layer contain the same material; the first layer and the third layer contain the same material; and the second conductive layer and the fifth conductive layer contain the same material.

A method for manufacturing a display device that can easily achieve higher resolution is provided. A display device having both high display quality and high resolution is provided. A first EL film is deposited over a first pixel electrode, a first sacrificial film is formed to cover the first EL film and a first electrode, and the first sacrificial film and the first EL film are etched, so that a first EL layer is formed over the first pixel electrode. Then, the first sacrificial film is removed to expose the first electrode. Furthermore, a common electrode is formed over the first EL layer and the first electrode. The first EL film is etched by dry etching, and the first sacrificial film is removed by wet etching.

A display device in which a puddle in the vicinity of a partition of a light-emitting element is reduced when a light-emitting layer is formed by a wet process is provided. The display device includes a first anode; a second anode adjacent to the first anode in an X direction; a third anode adjacent to the first anode in a Y direction; a hole-injection layer provided across the first anode to the third anode; a partition provided over the hole-injection layer; a first light-emitting layer; a second light-emitting layer; a third light-emitting layer; and a cathode. The partition includes, in a top view, a first region positioned between the first anode and the third anode and extending in the X direction, and a second region positioned between the first anode and the second anode and extending in the Y direction. The height of the first region is larger than the height of the second region in a cross-sectional view of the partition.

A display device capable of high-quality images can be provided. The display device includes a first light-emitting element, a second light-emitting element, and a gap. The first light-emitting element includes a first light-emitting layer and a first electron-injection layer over the first light-emitting layer, and the second light-emitting element includes a second light-emitting layer and a second electron-injection layer over the second light-emitting layer. The first light-emitting element is adjacent to the second light-emitting element. The gap is placed between the first electron-injection layer and first light-emitting layer and the second electron-injection layer and second light-emitting layer. The first electron-injection layer comprises a region projecting from the side surface of the first light-emitting layer, and the second electron-injection layer comprises a region projecting from the side surface of the second light-emitting layer.

A display device capable of displaying a high-quality image is provided. The display device includes a first light-emitting element, a second light-emitting element, and a gap. The first light-emitting element includes a first lower electrode, a first light-emitting layer over the first lower electrode, and a first upper electrode over the first light-emitting layer. The second light-emitting element includes a second lower electrode, a second light-emitting layer over the second lower electrode, and a second upper electrode over the second light-emitting layer. The first light-emitting element is adjacent to the second light-emitting element. The gap is between the first upper electrode and first light-emitting layer and the second upper electrode and second light-emitting layer. The first upper electrode includes a region projecting from a side surface of the first light-emitting layer. The second upper electrode includes a region projecting from a side surface of the second light-emitting layer.

A display device that can display a high-quality image is provided. The display device includes a first conductive layer, a second conductive layer, a light-emitting layer, and a lens. The light-emitting layer is provided over the first conductive layer, the second conductive layer is provided over the light-emitting layer, and the lens is provided over the second conductive layer. The lens contains a photosensitive material. An end portion of the lens is located more outward than an end portion of the light-emitting layer and an end portion of the second conductive layer. The display device further includes an insulating layer, and the insulating layer includes a region in contact with a top surface of the lens, a region in contact with a side surface of the second conductive layer, and a region in contact with a side surface of the light-emitting layer.

Novel compounds comprising heteroleptic iridium complexes are provided. The compounds have a particular combination of ligands which includes a single pyridyl dibenzo-substituted ligand. The compounds may be used in organic light emitting devices, particularly as emitting dopants, to provide devices having improved efficiency, lifetime, and manufacturing.

Novel compounds comprising heteroleptic iridium complexes are provided. The compounds have a particular combination of ligands which includes a single pyridyl dibenzo-substituted ligand. The compounds may be used in organic light emitting devices, particularly as emitting dopants, to provide devices having improved efficiency, lifetime, and manufacturing.

A luminescent film includes a host compound, a blue phosphorescent compound, and a blue fluorescent compound, in which an emission spectrum of the blue phosphorescent compound and an absorption spectrum of the blue fluorescent compound have portions overlapping with each other; shortest wavelength-side maximum emission wavelengths of the blue phosphorescent compound (abbreviated as BPM in the expression) and the blue fluorescent compound (abbreviated as BFM in the expression) satisfy the following expression (1): .sub.BFM.sub.BPM: expression (1) in which .sub.BFM represents the shortest wavelength-side maximum emission wavelength of the blue fluorescent compound and .sub.BPM represents the shortest wavelength-side maximum emission wavelength of the blue phosphorescent compound; and light emission derived from the blue fluorescent compound is detected.

A luminescent film includes a host compound, a blue phosphorescent compound, and a blue fluorescent compound, in which an emission spectrum of the blue phosphorescent compound and an absorption spectrum of the blue fluorescent compound have portions overlapping with each other; shortest wavelength-side maximum emission wavelengths of the blue phosphorescent compound (abbreviated as BPM in the expression) and the blue fluorescent compound (abbreviated as BFM in the expression) satisfy the following expression (1): .sub.BFM.sub.BPM: expression (1) in which .sub.BFM represents the shortest wavelength-side maximum emission wavelength of the blue fluorescent compound and .sub.BPM represents the shortest wavelength-side maximum emission wavelength of the blue phosphorescent compound; and light emission derived from the blue fluorescent compound is detected.