Metal mask plate frame, mask plate assembly and net stretching processing method of mask plate assembly

Abstract

The invention provides a metal mask frame, a mask assembly and a net stretching processing method of the mask assembly, and relates to the field of metal masks. The metal mask frame comprises a fixed frame, four groups of movable frame edges and a plurality of springs; a plurality of spring holes are distributed in the outer side face of the periphery of the fixing frame and extend towards the interior of the frame body in the normal direction of the corresponding outer side face. The movable frame edges are arranged on the four edges of the fixed frame respectively and slidably connected with the upper side face of the fixed frame, the movable frame edges are provided with spring blocking parts, and the outer side faces of the corresponding fixed frame are covered with the spring blocking parts; the springs are matched with the spring holes and installed in the corresponding spring holes respectively, and the outer ends of the springs abut against the inner side faces of the spring blocking parts. The mask plate assembly comprises the metal mask plate frame and the metal mask plate. During net stretching, the movable frame edge is extruded and moved to a preset position in the direction towards the center of the fixed frame, and then the metal mask plate is stretched and welded to the movable frame edge. According to the invention, sagging of the mask mesh surface can be inhibited.

Description

technical field [0001] The invention relates to the field of metal masks, in particular to a metal mask frame, a mask assembly and a method for processing the mesh. Background technique [0002] OLED display devices are more and more widely used due to their advantages of self-luminous, bright colors, low power consumption, and wide viewing angles. At present, evaporation technology is generally used in the production of OLED display devices, in which the metal mask (Metal Mask, Mask for short) can effectively control the position of the organic material deposited on the substrate, and plays an extremely important role in the entire OLED display device production process. Role. Usually, the mask assembly includes a metal mask frame (Frame) and a metal mask, and the latter is combined with the former by mesh welding. Among them, the metal mask also includes a supporting mask (Supporting Mask), a common metal mask (Common Metal Mask, referred to as CMM) and a precision metal...

AI Technical Summary

Problems solved by technology

However, this method has a limited effect on improving the above problems. As the accuracy requirements are getting higher and higher, it is urgent to find a new solution.

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