Abstract: Provided is an EL element utilizing upconversion light emission involving highly efficient triplet-triplet annihilation. A blue-light-emitting layer includes an ionic liquid, a red phosphorescent material, and a blue fluorescent material. The blue fluorescent material and the red phosphorescent material are homogeneously dispersed in a liquid film of the ionic liquid.

Abstract: In an organic EL element equipped with an anode, a cathode, a luminescent layer, and an electron transport layer, the cathode includes a reflecting electrode. The electron transport layer includes a doped electron transport layer to which an n-type dopant material is added and a non-doped electron transport layer to which an n-type dopant material is not added. A first reflection surface that reflects light from the luminescent layer is provided at an interface between the doped electron transport layer and the non-doped electron transport layer.

Abstract: Provided is a scan vapor deposition metal mask with which a high-resolution, linear vapor deposition film pattern can be formed even on a large-sized substrate. Two first unit opening groups are included. The first unit opening groups are arranged by being shifted from each other in a Y direction so as not to be adjacent to each other in an X direction, while the first unit opening groups adjacent to each other in the Y direction are arranged by being shifted from each other in the X direction by ½ times a first opening pitch.

Abstract: An organic EL display device includes a plurality of sub-pixels each including a first organic EL element and a second organic EL element, a temperature information detector configured to measure current-voltage characteristics of the second organic EL element included in each of the sub-pixels, and to detect, on the basis of a result of the measurement, temperature information of the second organic EL element included in each of the sub-pixels, and a correction unit configured to correct a driving signal of the first organic EL element included in each of the sub-pixels on the basis of the temperature information of the second organic EL element included in the same sub-pixel as the sub-pixel including the relevant first organic EL element.

Abstract: An organic EL element is provided that has a high light emission efficiency and that emits a plurality of light beams having respective wavelength ranges different from one another, the light beams including short wavelength light having a high chromaticity. An organic EL element (1) includes an exciton generating layer (7) and a guest layer (8) that are adjacent to each other.

Abstract: To provide an organic EL element having good injection properties and transport properties of a carrier. Included are: an InGaZnO layer with a composition rich in In2O3 as a transparent electrode contacting a negative electrode; an InGaZnO layer with a stoichiometric ratio of In:Ga:Zn:O=1:1:1:4 as an electron injecting layer; and an InGaZnO layer with a composition rich in Ga2O3 as an electron transport layer contacting a light emitting layer.

Abstract: An organic EL element (10) includes a first light-emitting layer (33a) having the shortest emission peak wavelength of a light-emitting layer (33) and containing a host material and a TTF material or at least the TTF material, a second light-emitting layer (33b) containing at least a TADF material, a third light-emitting layer (33c) having the longest emission peak wavelength of the light-emitting layer (33) and containing at least fluorescent material. The excited triplet level of the TTF material is lower than the excited triplet level of the TADF material.

Abstract: A restriction unit includes at least one restriction opening configured to allow vapor deposition particles to pass through and a plurality of restriction sections prepared at both sides of the restriction opening. The restriction section has a cross-sectional shape of an inverse concave formed of a top wall and opening walls.

Abstract: The organic electroluminescent element of the present invention includes, in the given order: an anode; a light-emitting layer; and a cathode, the light-emitting layer including a luminescent dopant layer and a luminescent host layer, the luminescent dopant layer containing a luminescent dopant material and substantially no luminescent host material, the luminescent host layer containing a luminescent host material and substantially no luminescent dopant material.

Abstract: A magnetic material section is provided on a mask substrate so as to be interposed between Y aperture lines of the mask substrate and between X aperture line of the mask substrate. A portion of the magnetic material section which portion is interposed between the X aperture lines has a first thickness and a second thickness which is less than the first thickness, the first thickness being that of each sub-portion thereof which is positioned between mutually adjacent ones of the Y aperture lines, the second thickness being that of each sub-portion thereof which is positioned between apertures which are mutually adjacent in a Y direction.

Abstract: To provide a vapor deposition source of which material usage efficiency is higher as compared with the related art. A vapor deposition source (10) includes a vapor deposition particles ejecting unit (30) configured to include multistage of nozzle units layered apart from each other in a vertical direction, each of the nozzle units including at least one vapor deposition nozzle (32, 52), and at least one space part (43) provided between the multistage of vapor deposition nozzles, and a vacuum exhaust unit (14) connected with the at least one space part (43).

Abstract: A vapor deposition particles ejecting unit (30) in a vapor deposition source (10) includes: a plurality of stages of nozzle units each including at least one vapor deposition nozzle (32, 52) and stacked while separated from each other in a vertical direction; and at least one hollow portion (43) formed between the at least one vapor deposition nozzle and the at least one vapor deposition nozzle of respective stages. The at least one hollow portion is surrounded on four sides by a side wall (44) including at least one opening (45) formed in the side wall and connecting the at least one hollow portion and a vacuum chamber space (2a).

Abstract: Provided is a line source that can achieve uniform film thickness distribution and also achieve high use efficiency of vapor deposition materials. A line source (10) has slit nozzles (1) having a slit nozzle's length-to-width ratio of 4 to 50, a width of 1 mm to 5 mm, and a depth of 5 mm to 20 mm.

Abstract: A display according to an embodiment of the present invention includes an element substrate, a display section including a plurality of pixels each including a plurality of light-emitting elements, and monitoring elements for detecting the temperature of the light-emitting elements. The light-emitting elements each include an anode, a cathode, and a light-emitting layer placed between the anode and the cathode. The monitoring elements each include an anode, a cathode, and a light emission-suppressing layer containing the same light-emitting material as the light-emitting layer. When voltages are supplied to the monitoring elements, the light emission-suppressing layers do not emit any visible light or emit visible light with a luminance lower than the case where the same voltages as the above voltages are applied to the light-emitting elements.

Abstract: A vapor deposition device (100) includes a vapor deposition source (30), a vapor deposition mask (10), a limiting plate unit (20), and a gas supply mechanism (50). The limiting plate unit (20) is disposed between the vapor deposition source and the vapor deposition mask. The gas supply mechanism (50) causes a gas wall (501) to be formed in a non-opening portion (13). The non-opening portion (13) is a portion between the vapor deposition mask and the limiting plate unit. The non-opening portion (13) is positioned between limiting-plate openings (21) of the limiting plate unit, which are adjacent to each other, and is positioned between mask opening regions (11) of the vapor deposition mask, which are adjacent to each other in plan view.

Abstract: Provided is a display device with high productivity and with reduced color shift in light-emitting elements and reduced degradation in light-emitting element characteristics. An electron transport film (4c) formed on a blue light-emitting film (4b) in B pixels is thicker than an electron transport film (6d) formed on a green light-emitting film (6b) and a red light-emitting film (6c) in G and R pixels so that the remaining film percentage of the electron transport film (4c) after exposure to heat generated by irradiation with laser light is higher than the remaining film percentage of the electron transport film (6d) after exposure to heat generated by irradiation with laser light.

Abstract: In plan view, a magnet plate (10) has a first magnetic domain (11) and a second magnetic domain (12), a magnetic domain boundary line (14) is inclined to an opening side (26) and is bent or curved, and the magnet plate has magnetic fields that are generated in a respective plurality of different directions.

Abstract: The present invention provides an organic EL element having high luminous efficacy and productivity and an organic EL panel including the organic EL element. The organic electroluminescent element of the present invention includes, in the given order, an anode, a hole-transport layer, a luminescent unit, an electron-transport layer, and a cathode. The luminescent unit includes a mixed light-emitting layer and includes a luminescent dopant layer at least between the hole-transport layer and the mixed light-emitting layer or between the electron-transport layer and the mixed light-emitting layer. The mixed light-emitting layer contains a first luminescent host material and a first luminescent dopant material. The luminescent dopant layer consists essentially of a second luminescent dopant material and is thinner than the mixed light-emitting layer.

Abstract: In plan view, a magnet plate (10) has a first magnetic domain (11) and a second magnetic domain (12), a magnetic domain boundary line (14) is inclined to an opening side (26) and is bent or curved, and the magnet plate has magnetic fields that are generated in a respective plurality of different directions.

Abstract: The present invention is directed to a method for manufacturing a vapor deposition mask (2) which includes a mask section (3) and a mask frame (4). The mask section (3) includes an alloy containing iron and nickel. The method includes a heat treatment step of carrying out heat treatment with respect to the mask section (3) in a state in which end parts of the mask section (3) are fixed to the mask frame (4) while tension is applied to the mask section (3).