Auxiliary jig for manufacturing mask plate for large-area evaporation and its use method

The invention discloses an auxiliary jig for manufacturing a mask plate for large-area evaporation and a use method of the auxiliary jig. The auxiliary jig for manufacturing the mask plate for the large-area evaporation comprises a side frame and openings in the side frame, and is characterized in that the side frame comprises two groups of opposite sides and a hollow region formed among the four opposite sides, the openings are strip-shaped openings or dispersed openings positioned in the four opposite sides, each opposite side comprises an inner side and an outer side, and the openings are positioned between the inner sides and the outer sides. The auxiliary jig for manufacturing the mask plate for the large-area evaporation, provided by the utility model, is capable of connecting and fixing four sides of the mask plate to ensure that the mask plate has a certain tension so that the surface of the mask plate is flat without deforming when passing through corresponding processing lines, and thus the product quality is improved, the rejection rate is reduced, the production cost is saved, and the efficiency is increased.