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Mask plate and mask plate assembly

A mask plate and component technology, which is applied in metal material coating process, vacuum evaporation coating, coating, etc., can solve the problems affecting the evaporation accuracy and the position deviation of the opening, so as to improve the evaporation accuracy and prevent The effect of shifting

Pending Publication Date: 2020-11-13
HEFEI VISIONOX TECH CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] However, during the welding process, wrinkles are formed in the welding area, and these wrinkles will extend into the opening area, causing the position of the opening in the opening area to shift, affecting the accuracy of evaporation

Method used

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  • Mask plate and mask plate assembly
  • Mask plate and mask plate assembly
  • Mask plate and mask plate assembly

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Embodiment Construction

[0059] The inventor of the present application found in the actual work process that when the mask plate is placed on the frame with the jaws and the mask plate is welded to the frame by laser welding, stress will be formed inside the mask plate. When the stress is concentrated in some areas of the mask plate, for example, the area where the alignment holes are located, wrinkles will occur in these areas. During the subsequent evaporation alignment process, the magnetic adsorption will expand the above-mentioned wrinkles and make the above-mentioned wrinkles Extending into the opening area of ​​the mask plate causes the position of the opening area to shift, reducing the positional accuracy (PAA) of the evaporation pattern, which in turn causes the pixel of the evaporated OLED device to shift, affecting the normal display of the OLED device.

[0060] In view of the above-mentioned technical problems, embodiments of the present invention provide a mask and a mask assembly. By pr...

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Abstract

The invention provides a mask plate and a mask plate assembly, and relates to the technical field of display. The mask plate comprises an open area and a welding area arranged around the open area, and a stop groove is arranged outside the open area. When the mask plate is welded to a framework, wrinkles can be formed on the mask plate. The stop groove is arranged on the mask plate and can stop transmission of wrinkles, wrinkles are prevented from being transmitted into the open area of the mask plate, then the position of the open area is prevented from deviating, and evaporation precision isimproved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a mask plate and a mask plate assembly. Background technique [0002] The film layer structure in an Organic Light-Emitting Diode (OLED for short) usually needs to be formed by vapor deposition using a mask assembly (MFA). [0003] The mask plate assembly usually includes a frame and a mask plate, wherein the mask plate includes an opening area and a welding area arranged around the opening area, and alignment holes are arranged in the welding area; when forming the mask plate assembly, it is usually necessary to first The mask plate is placed on the frame, and the alignment holes on the mask plate are aligned with the alignment holes on the frame, and then the welding area of ​​the mask plate is welded on the frame. [0004] However, during the welding process, wrinkles are formed in the welding area, and these wrinkles will extend into the opening area, causing the position o...

Claims

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Application Information

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IPC IPC(8): C23C14/04C23C14/24
CPCC23C14/042C23C14/24
Inventor 王恩霞孙琳李世泰李慧李伟丽刘明星甘帅燕
Owner HEFEI VISIONOX TECH CO LTD
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