Mask and fabrication method of organic light emitting material layer

A fabrication method of an organic light emitting material layer, the fabrication method comprising following steps:

• forming a first color pattern on a substrate, comprising:
• providing the substrate, and the substrate comprising a plurality of first regions, and each of the plurality of first regions comprising a plurality of first sub-regions and a plurality of second sub-regions alternately disposed in a row direction, and the plurality of first sub-regions and the plurality of second sub-regions comprising a gap there-between or are connected;
• providing a mask on the substrate, wherein the mask comprises:
• a plurality of first rows of openings, each of the plurality of first rows of openings comprising a plurality of first openings arranged along a row direction, and the plurality of first openings positioned in different rows aligned in a column direction, wherein each of the plurality of first openings has a first length, and two adjacent first openings of the plurality of first openings in the same row of the plurality of first rows of openings comprises a first interval there-between;
• and
• a plurality of second rows of openings, each of the plurality of second rows of openings comprising a plurality of second openings arranged along the row direction, and the plurality of second openings positioned in different rows aligned in the column direction, wherein each of the plurality of the second openings has a second length, and two adjacent second openings of the plurality of second openings in the same row of the plurality of second rows of openings comprises a second interval there-between,
• the plurality of first rows of openings, and the plurality of second rows of openings are alternately disposed and any one of the plurality of second rows of openings is configured between two adjacent first rows of the plurality of first rows of openings, and the plurality of first openings and the plurality of second openings are alternately arranged in the row direction,
• wherein the each of the plurality of first openings has a first width,
• the plurality of second rows of openings is shifted relative to the plurality of first rows of openings in the row direction by a first distance, and the first distance is equal to the first length, and the first distance is equal to the first length plus a difference between the first interval and the second length,
• the plurality of second rows of openings is shifted relative to the plurality of first rows of openings in the column direction by a second distance, and the second distance is greater than or equal to three times the first width,
• wherein the plurality of first openings and the plurality of second openings expose the plurality of first sub-regions, while the plurality of second sub-regions is shielded by the mask;
• forming a first sub-pattern on each of the plurality of first sub-regions of the substrate via the plurality of first openings and the plurality of second openings;
• and
• forming a second sub-pattern on each of the plurality of second sub-regions, wherein the first sub-patterns and the second sub-patterns include a gap there-between or are connected, and the first color pattern comprises the first sub-pattern on the each of the plurality of first sub-regions and the second sub-pattern on the each of the plurality of second sub-regions.