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: 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.