The metal plate includes a plurality of pits located on the surface of the metal plate. The manufacturing method for a metal plate for use in manufacturing of a deposition mask includes an inspection step of determining a quality of the metal plate based on a sum of volumes of a plurality of pits located at a portion of the surface of the metal plate.

A light-emitting device (1) is provided with, on a substrate (3), light-emitting elements (2R, 2G, 2B) each including a first electrode (4), a second electrode (12), and a quantum dot layer (8) interposed between the first electrode and the second electrode. The quantum dot layer is provided with quantum dots (20R, 20G, 20B) including cores (22R, 22G, 22B) and shells (24R, 24G, 24B) with which the cores are coated, and ligands (18R, 18G, 18B) to coordinate with the quantum dots. A step of forming the quantum dot layer includes a step of light irradiation configured to form an exposure region where, by the light irradiation using a photomask, the ligand melts and a solvent of a solution in which the ligand is dispersed vaporizes, and a non-exposure region at a position different from a position on which the light irradiation is performed.

The present invention provides: (I) a display device including a display panel, a retardation layer, and a polarizer which are stacked in the stated order from a back surface side to a viewing surface side and integrated without an adhesive layer; and (II) a method for producing a display device including: forming a first alignment film on a display panel, applying a solution containing first polymerizable liquid crystal to the first alignment film, and curing the first polymerizable liquid crystal to produce a retardation layer; and forming a second alignment film on the retardation layer, applying a solution containing second polymerizable liquid crystal and a dichroic material to the second alignment film, and curing the second polymerizable liquid crystal to produce a polarizer.

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 method of producing a film having excellent external quantum efficiency when used in a light emitting layer of a light emitting device is provided. A method of film production includes preparing an ink containing a specific metal complex, storing the ink for 3 days or more under light shielding, and forming a film by using the stored ink. The total content of metal complexes having a molecular weight larger by 16, 32 or 48 than that of the specific metal complex according to an area percentage value determined by liquid chromatography is 0.6 or less when the content of the specific metal complex is taken as 100.

A method of producing a film having excellent external quantum efficiency when used in a light emitting layer of a light emitting device is provided. A method of film production includes preparing an ink containing a specific metal complex, storing the ink for 3 days or more under light shielding, and forming a film by using the stored ink. The total content of metal complexes having a molecular weight larger by 16, 32 or 48 than that of the specific metal complex according to an area percentage value determined by liquid chromatography is 0.6 or less when the content of the specific metal complex is taken as 100.

There is provided a display device including: a first substrate that is a silicon substrate and on which a plurality of light-emitting elements is formed; a second substrate including, on a surface, a color filter layer including a plurality of color filters arrayed and a microlens layer including a plurality of microlenses arrayed that are layered in this order, the microlens layer being arranged to face the plurality of light-emitting elements with respect to the first substrate; and an adhesive layer that fills a gap between the first substrate and the second substrate for bonding the first substrate and the second substrate together.

A display device includes the following: a base substrate; a light-emitting element on the base substrate with a TFT layer interposed therebetween, the light-emitting element forming a display region; a sealing film covering the light-emitting element and having a stack of, in sequence, first and second inorganic insulating films; a frame region surrounding the display region; a cut disposed in the frame region so as to partly cut the display region; a cut-peripheral wall disposed in the frame region between the display region and the cut, and extending along the boundary of the display region; an evaporated film between the cut-peripheral wall and the first inorganic insulating film; and an organic buffer layer disposed on a surface of the cut-peripheral wall and interposed between the first and second inorganic insulating films.

There is provided an organic EL element having high efficiency and high driving stability despite having a low driving voltage. An organic electroluminescent element has a light-emitting layer between an anode and a cathode which face each other, and the light-emitting layer contains a first host selected from among indolocarbazole compounds represented by formula (1), a second host selected from among biscarbazole compounds represented by formula (2), and a light-emitting dopant material: ##STR00001##