Patent ID: 9441288
Filing Date: 2016-09-13
CPC Classification: B05B,C23C,C30B,H01L

Claim Text:
1. A mask for thin film deposition, comprising: a base member; a plurality of slits penetrating through the base member, wherein the plurality of slits have a predetermined length and extend in a first direction; and a plurality of ribs each being formed between two adjacent ones of the slits, wherein the plurality of slits comprise an outermost slit positioned in an outermost location in a second direction having a predetermined angle with respect to the first direction, wherein only the outermost slit comprises two sub-slits separated from each other by a rib supporting part, wherein each of the sub-slits is fully enclosed by the base member comprising the adjacent rib and rib supporting part and has a length less than half that of each of the slits, and wherein the length is defined along the first direction.