Abstract: A deposition mask according to an embodiment of the present disclosure includes a first surface, a second surface that is located opposite the first surface, and two or more through-holes. Each of the through-holes includes a first recess that is located at the first surface and a second recess that is located at the second surface. The deposition mask has a first mask region having a first surface remaining ratio that represents a remaining area ratio of the second surface and a second mask region having a second surface remaining ratio that represents a remaining area ratio of the second surface and that is higher than the first surface remaining ratio.

Abstract: A deposition mask apparatus including a frame, a supporter including a plurality of supporting members fixed to the frame, and a deposition mask fixed to the frame is provided. The plurality of supporting members include at least a first supporting member that is closest to an intermediate position between a third portion and a fourth portion of the frame and a second supporting member that is located closer to the third portion of the frame than the first supporting member. The first supporting member in a state of warping downward from the frame with a first warping amount supports the deposition mask from below. The second supporting member in a state of warping downward from the frame with a second warping amount that is smaller than the first warping amount supports the deposition mask from below.

Abstract: A deposition mask in which deformation of long sides is restrained is manufactured. A manufacturing method of a deposition mask includes a step of preparing a metal plate; a processing step of processing the metal plate into an intermediate product comprising: a plurality of deposition mask portions each including a pair of long sides and a pair of short sides, and having a plurality of through-holes formed therein; and a support portion that surrounds the plurality of deposition mask portions, and is partially connected to the short sides of the plurality of deposition mask portions; and a separation step of separating the deposition mask portions from the support portion to obtain the deposition mask. In the intermediate product, the long sides of the deposition mask portions are not connected to the support portion.

Abstract: A deposition mask apparatus including a frame, a supporter including a plurality of supporting members fixed to the frame, and a deposition mask fixed to the frame is provided. The plurality of supporting members include at least a first supporting member that is closest to an intermediate position between a third portion and a fourth portion of the frame and a second supporting member that is located closer to the third portion of the frame than the first supporting member. The first supporting member in a state of warping downward from the frame with a first warping amount supports the deposition mask from below. The second supporting member in a state of warping downward from the frame with a second warping amount that is smaller than the first warping amount supports the deposition mask from below.

Abstract: A deposition mask in which deformation of long sides is restrained is manufactured. A manufacturing method of a deposition mask includes a step of preparing a metal plate; a processing step of processing the metal plate into an intermediate product comprising: a plurality of deposition mask portions each including a pair of long sides and a pair of short sides, and having a plurality of through-holes formed therein; and a support portion that surrounds the plurality of deposition mask portions, and is partially connected to the short sides of the plurality of deposition mask portions; and a separation step of separating the deposition mask portions from the support portion to obtain the deposition mask. In the intermediate product, the long sides of the deposition mask portions are not connected to the support portion.

Abstract: 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.

Abstract: A deposition mask apparatus including a frame, a supporter including a plurality of supporting members fixed to the frame, and a deposition mask fixed to the frame is provided. The plurality of supporting members include at least a first supporting member that is closest to an intermediate position between a third portion and a fourth portion of the frame and a second supporting member that is located closer to the third portion of the frame than the first supporting member. The first supporting member in a state of warping downward from the frame with a first warping amount supports the deposition mask from below. The second supporting member in a state of warping downward from the frame with a second warping amount that is smaller than the first warping amount supports the deposition mask from below.

Abstract: 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.

Abstract: A manufacturing method for an electronic device includes a preparation step of preparing a layered body including a substrate, two or more first electrodes, and organic layers, the substrate having a first surface and a second surface that is positioned opposite to the first surface, the two or more first electrodes positioned above the first surface of the substrate, the organic layers positioned above the first electrodes; a second electrode formation step of forming a second electrode above the organic layers so that the second electrode overlaps the two or more first electrodes when viewed in a normal direction to the first surface of the substrate; and a removal step of partly removing regions of the second electrode that is positioned between the first electrodes in plan view.

Abstract: A deposition mask includes a first surface facing to the deposition target substrate, and a second surface opposite to the first surface. The deposition mask includes: an effective area in which a plurality of through holes are formed and a longitudinal direction in which one or more of the effective areas are arranged along the longitudinal direction. At least in a central area of the longitudinal direction, the deposition mask is warped to be convex on the first surface in a cross section orthogonal to the longitudinal direction.

Abstract: A method of inspecting an elongated metal plate is provided, including measuring longitudinal direction metal plate thicknesses, measuring width direction metal plate thicknesses, and selecting the metal plate that satisfies condition (1), (B/A)×100 (%) is 5% or less, A being an average value of the longitudinal direction metal plate thicknesses, and B being obtained by multiplying a standard deviation of the longitudinal direction metal plate thicknesses by 3, and that satisfies condition (2), (C/X)×100 (%) is 3% or less, C being a value obtained by multiplying a standard deviation of the width direction metal plate thicknesses by 3, and X being a central portion width direction metal plate thickness obtained when the width direction metal plate thicknesses are measured to calculate the standard deviation of the metal plate thicknesses in the width direction.

Abstract: A deposition mask package according to the present embodiment includes a receiving portion, a lid portion that faces the receiving portion, a deposition mask that is arranged between the receiving portion and the lid portion and has an effective region in which a plurality of through-holes is formed. The receiving portion has a first opposing surface facing the lid portion and a concave portion provided on the first opposing surface. The concave portion is covered by a first flexible film. The effective region of the deposition mask is arranged on the concave portion with the first flexible film interposed therebetween.

Abstract: A standard mask apparatus includes at least one standard mask including at least one through-hole. The standard mask apparatus may include standard regions each including the at least one through-hole. The standard regions may be arranged in a first direction and in a second direction that intersects with the first direction. A ratio of a dimension of each standard region in the first direction to a dimension of an interval between two of the standard regions in the first direction may be higher than or equal to 0.1. A ratio of a dimension of each standard region in the second direction to a dimension of an interval between the two standard regions in the second direction may be higher than or equal to 0.1.

Abstract: A deposition mask includes: a first surface and a second surface, in which a plurality of through-holes are formed; a pair of long side surfaces connected to the first and second surfaces, and defining a profile of the deposition mask in a longitudinal direction of the deposition mask; and a pair of short side surfaces connected to the first and second surfaces, and defining a profile of the deposition mask in a width direction of the deposition mask. The long side surface includes a first portion that is recessed inside and includes a first end portion positioned along the first surface, and a second end portion positioned along the second surface and positioned inside the first end portion. The through-hole includes a first recess formed on the first surface, and a second recess formed on the second surface and connected to the first recess through a hole connection portion.

Abstract: The object of the present invention is to provide a metal plate capable of manufacturing a deposition mask in which dispersion of positions of through-holes is restrained. A thermal recovery rate is defined as parts per million of a difference a distance between to measurement points on a sample before a heat treatment and a distance therebetween after the heat treatment, relative to the distance therebetween before the heat treatment. In this case, an average value of the thermal recovery rates of the respective samples is not less than ?10 ppm and not more than +10 ppm, and (2) a dispersion of the thermal recovery rates of the respective samples is not more than 20 ppm.

Abstract: A deposition mask package according to the present embodiment includes a receiving portion, a lid portion that faces the receiving portion, a deposition mask that is arranged between the receiving portion and the lid portion and has an effective region in which a plurality of through-holes is formed. The receiving portion has a first opposing surface facing the lid portion and a concave portion provided on the first opposing surface. The concave portion is covered by a first flexible film. The effective region of the deposition mask is arranged on the concave portion with the first flexible film interposed therebetween.

Abstract: A deposition mask apparatus including a frame, a supporter including a plurality of supporting members fixed to the frame, and a deposition mask fixed to the frame is provided. The plurality of supporting members include at least a first supporting member that is closest to an intermediate position between a third portion and a fourth portion of the frame and a second supporting member that is located closer to the third portion of the frame than the first supporting member. The first supporting member in a state of warping downward from the frame with a first warping amount supports the deposition mask from below. The second supporting member in a state of warping downward from the frame with a second warping amount that is smaller than the first warping amount supports the deposition mask from below.

Abstract: A deposition mask includes: a first surface and a second surface, in which a plurality of through-holes are formed; a pair of long side surfaces connected to the first and second surfaces, and defining a profile of the deposition mask in a longitudinal direction of the deposition mask; and a pair of short side surfaces connected to the first and second surfaces, and defining a profile of the deposition mask in a width direction of the deposition mask. The long side surface includes a first portion that is recessed inside and includes a first end portion positioned along the first surface, and a second end portion positioned along the second surface and positioned inside the first end portion. The through-hole includes a first recess formed on the first surface, and a second recess formed on the second surface and connected to the first recess through a hole connection portion.

Abstract: A deposition mask includes a mask body and a through-hole provided in the mask body and through which a deposition material passes when the deposition material is deposited on a deposition target substrate. The mask body satisfies y?950 and y?23x?1280 when an indentation elastic modulus is x (GPa) and a 0.2% yield strength is y (MPa).

Abstract: A method of quality determination of a deposition mask according to the present disclosure includes: a measuring step that measures a dimension X1 from a P1 point to a Q1 point, and a dimension X2 from a P2 point to a Q2 point; and a determining step that determines a quality of a deposition mask, based on the dimension X1 and the dimension X2 measured in the measuring step.