To improve efficiency when manufacturing a light emitting device formed using a mask to form regions corresponding to pixels on a substrate, provided is a method including, after forming a pattern on a substrate with a first light emitting material that emits light of a first spectrum, through a first opening and one or more second openings of a mask, moving the mask in a longitudinal direction of the first opening by a distance that is less than the width of the first opening in the longitudinal direction of the first opening and greater than or equal to the width of the one or more second openings in the longitudinal direction of the first opening, and then forming a pattern with a second light emitting material that emits light of a second spectrum, through the first opening and the one or more second openings of the mask.