Mask sheet and method for manufacturing the same

A mask sheet comprising a plurality of mask units, wherein each of the plurality of mask units comprises an evaporation effective area and a plurality of welding areas that are distributed around the evaporation effective area according to a preset rule,

• wherein a plurality of evaporation effective areas are arranged in an array and the plurality of mask units are arranged in an array corresponding to the plurality of evaporation effective areas,
• the plurality of mask units have similar shapes and areas,
• the mask units have a shape of rectangle, and
• the plurality of welding areas comprise welding areas disposed at four corners of each of the plurality of mask units, and
• wherein:
• a virtual mask unit area is disposed at an outer side of mask units that are located at beginning and end of each column, the outer side is a side away from an inside part of each column, and the plurality of welding areas further comprise welding areas disposed at two adjacent corners of the virtual mask unit area that are close to the mask units at the beginning and the end of each column;
• and/or a virtual mask unit area is disposed at an outer side of mask units that are located at the beginning and end of each row, the outer side is a side away from an inside part of each row, and the plurality of welding areas further comprise welding areas disposed at two adjacent corners of the virtual mask unit area that are close to the mask units at the beginning and the end of each row.