Abstract: A mask cleaning composition for cleaning a deposition mask includes a solvent having a Hansen solubility parameter distance Ra1 of 7.35 (MPa)1/2 or less, the Hansen solubility parameter distance Ra1 being expressed by Equation below: Ra1={4×(17.9??D)2+(9.9??P)2+(7.4??H)2}1/2, where ?D (MPa)1/2 indicates a dispersion power term of the solvent, ?P (MPa)1/2 indicates a polarity term of the solvent, and ?H (MPa)1/2 indicates a hydrogen bonding force term of the solvent.

Abstract: A mask assembly includes a mask frame including a plurality of sides and an opening, a first support stick arranged on the mask frame to overlap the opening, the first mask stick extending in a direction parallel to one of the sides of the mask frame, a mask sheet arranged on the first support stick, the mask sheet extending in a direction parallel to one of the sides of the mask frame, and a first waterproof membrane arranged on a surface of the first support stick facing the mask sheet.

Abstract: Various embodiments of the disclosure relate to an electronic device including an antenna. An electronic device may include: a housing, a main substrate s disposed in an inner space of the housing and including a first surface facing a first direction and a second surface facing a second direction opposite to the first direction, and an antenna module disposed on the main substrate, wherein the antenna module includes a first substrate disposed on the first surface of the main substrate and including at least one antenna, the main substrate including multiple through-holes, multiple antenna structures disposed to penetrate the multiple through-holes, respectively, and include at least one antenna element including at least one antenna spaced at a designated interval, and matching structure comprising impedance matching circuitry disposed on the first substrate and configured to match impedance for the at least one antenna element included in each of the multiple antenna structures.

Abstract: A display apparatus includes a pixel area and an adjacent transmission area, first to third sub-pixel electrodes disposed on a substrate, disposed in the pixel area, and spaced apart from each other, a bank layer overlapping an edge of each of the first to third sub-pixel electrodes, first to third intermediate layers respectively disposed on the first to third sub-pixel electrodes and spaced apart from each other, first to third opposite electrodes respectively disposed on the first to third intermediate layers and spaced apart from each other, and an auxiliary electrode disposed on the bank layer. The first to third opposite electrodes respectively pass through edges of the first to third intermediate layers and electrically contact the auxiliary electrode.

Abstract: Provided are a display device and a method of manufacturing the same. The display device includes a substrate; a pixel electrode on the substrate; a pixel-defining layer having a first opening exposing a central portion of the pixel electrode and a barrier portion defining the first opening; an auxiliary electrode on the barrier portion; an intermediate layer on the pixel electrode; and an opposite electrode on the intermediate layer and in electrical contact with the auxiliary electrode.

Abstract: A method of manufacturing a mask, includes forming an organic material layer on a mask substrate and patterning a hard mask on the organic material layer, etching the organic material layer to form a mask sheet including through holes, removing the hard mask on the mask sheet, forming a conductive material layer on the mask sheet, and etching the conductive material layer to form a conductive layer.

Abstract: A method of manufacturing a mask, includes forming an organic material layer on a mask substrate and patterning a hard mask on the organic material layer, etching the organic material layer to form a mask sheet including through holes, removing the hard mask on the mask sheet, forming a conductive material layer on the mask sheet, and etching the conductive material layer to form a conductive layer.

Abstract: A method of manufacturing a mask, includes forming an organic material layer on a mask substrate and patterning a hard mask on the organic material layer, etching the organic material layer to form a mask sheet including through holes, removing the hard mask on the mask sheet, forming a conductive material layer on the mask sheet, and etching the conductive material layer to form a conductive layer.

Abstract: Provided are a display device and a method of manufacturing the same. The display device includes a substrate; a pixel electrode on the substrate; a pixel-defining layer having a first opening exposing a central portion of the pixel electrode and a barrier portion defining the first opening; an auxiliary electrode on the barrier portion; an intermediate layer on the pixel electrode; and an opposite electrode on the intermediate layer and in electrical contact with the auxiliary electrode.

Abstract: Provided are a display device and a method of manufacturing the same. The display device includes a substrate; a pixel electrode on the substrate; a pixel-defining layer having a first opening exposing a central portion of the pixel electrode and a barrier portion defining the first opening; an auxiliary electrode on the barrier portion; an intermediate layer on the pixel electrode; and an opposite electrode on the intermediate layer and in electrical contact with the auxiliary electrode.

Abstract: Provided are a display device and a method of manufacturing the same. The display device includes a substrate; a pixel electrode on the substrate; a pixel-defining layer having a first opening exposing a central portion of the pixel electrode and a barrier portion defining the first opening; an auxiliary electrode on the barrier portion; an intermediate layer on the pixel electrode; and an opposite electrode on the intermediate layer and in electrical contact with the auxiliary electrode.