Patent ID: 9192959
Filing Date: 2015-11-24
Classification: B05C,C23C,C23F,H01L

Abstract:
1. A mask frame assembly for a thin film deposition, the mask frame assembly comprising: a mask frame including an opening and frames surrounding the opening; and a mask coupled to the mask frame, the mask comprising: a plurality of deposition patterns which are separated from each other; and a rib disposed between immediately adjacent deposition patterns and connecting the deposition patterns to each other, the rib comprising a first half-etched portion that is recessed from a surface of the rib and does not penetrate through the mask, the first half-etched portion of the rib having a rectangular shape and being enclosed by four sidewalls and a bottom wall of the rib, a thickness of the first half-etched portion being less than a thickness of another portion of the mask.