Adjustable fixture

Abstract

The invention discloses an adjustable fixture, which fixed a mask. The adjustable fixing device consists of a framework and two adjustable fixing mechanism. Two adjustable fixed on both sides of the relative institutions in framework, and adjustable to every fixed mechanism includes a body, two supports, a fixed piece, and two for the first piece. A body is set on the framework. Two supports movably set in on both sides of the body of the relative. At both ends of the fixed piece respectively fixed on two supports, and the mask is fixed on the fixing parts. Two piece corresponding to the two supports setting in the body of the relative sides, and every piece respectively used to drive the two supports one of the back and forth motion relative to the framework. Using the adjustable fixing device, which can effectively improve the mask of migration, and extend the service life of the mask and frame.

Description

technical field [0001] The invention relates to an adjustable fixing device, in particular to an adjustable fixing device for fixing a mask. Background technique [0002] At present, most of the organic film layers in organic light emitting diodes (OLEDs) are coated by thermal evaporation, and magnetic metals are mainly used to make masks (masks, masks), and fine particles are etched on the masks. The opening of the opening exposes the position to be coated. During evaporation, magnets are used to attract the mask, so that the mask is closely attached to the substrate to be coated. When making a large-area mask, the mask is currently made into multiple strip masks, and then each strip The mask is stretched, aligned using the tiny openings on the mask, and then welded to the frame. [0003] Please refer to Figure 1 to Figure 3 , figure 1 It is a top view of the prior art mask 10 fixed on the frame 12, figure 2 is a schematic diagram of five kinds of masks 10 that produ...

AI Technical Summary

Problems solved by technology

Since the current mask 10 is welded on the frame 12 by means of laser spot welding, the welding speed is relatively slow, and the force balance state of the mask 10 will gradually change during the welding process, and the temperature of the welding point will cause expansion, resulting in The mask 10 will have an offset situation, and then produce distortion, such as figure 2 shown

In addition, since the processing quality of each mask 10 is different, and they are sequentially welded to different positions on the frame 12, the offset of the mask 10 will cause different stress distributions in the frame 12, resulting in twisting deformation, such as image 3 shown

Finally, as the number of evaporations increases, all masks 10 may have different offsets, and even the offset is too large to be used

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