Universal metal mask welding method and manufactured universal metal mask

Abstract

The invention discloses a universal metal mask welding method and a manufactured universal metal mask, and belongs to the field of display panel manufacturing equipment. According to the universal metal mask plate welding method, the periphery of a mask net is stretched and positioned on the upper surface of a metal frame, and the periphery of the mask net is welded and fixed to the metal frame by adopting a spot welding process. According to the method, the long sides and the short sides of the rectangular mask net are subjected to segmented welding, central welding areas of the long sides and the short sides of the rectangular mask net are welded firstly, and then corresponding end welding areas of the long sides and the short sides of the rectangular mask net are welded respectively, so that accumulated extrusion deformation caused by single-side continuous welding of the mask net is relieved, and the welding position precision of the universal metal mask is improved; Moreover, the welding method is simple and easy to implement and convenient to implement, and a new thought is provided for improving the manufacturing precision of the universal metal mask. The manufactured universal metal mask plate is higher in position precision, the mask net is not prone to distortion, and high precision of the universal metal mask plate is guaranteed.

Description

technical field [0001] The invention relates to a metal mask welding method, more specifically, to a general metal mask welding method and the produced universal metal mask. Background technique [0002] In the production process of OLED panels, one of the core processes is the vacuum evaporation process, and the metal mask is a key component to realize this process, and its precision directly determines the quality of OLED panels. With the continuous growth of global OLED panel production, the market demand for metal masks is also rising. Metal masks mainly include Common Metal Mask (abbreviation: CMM) and high-precision fine metal mask (Fine Metal Mask, abbreviation: FMM). CMM is mainly used in the field of large-size OLED panel production , FMM is mainly used in the field of small and medium-sized OLED panel production. [0003] The common metal mask (CMM) is mainly composed of a metal frame (Frame) and a mask net (Masksheet) fixed on the metal frame. Most of the mask n...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of the existing general metal mask that the welding accumulated deformation is relatively large, which leads to the poor position accuracy of the mask, and to provide a general metal mask welding method and the produced universal metal mask version, adopt the technical scheme of the present invention, the long side and the short side of the rectangular mask net are welded separately, first weld the long side and the central welding area of ​​the short side of the rectangular mask net, and then respectively weld the rectangular mask net Weld the corresponding end welding areas of the long and short sides of the mask net, which improves the cumulative extrusion deformation caused by continuous welding on one side of the mask net, and improves the welding position accuracy of the general metal mask plate; moreover, the welding method is simple and easy It is easy to implement and provides a new idea for improving the production accuracy of general metal masks

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