Divided mask frame assembly and manufacturing method of divided mask frame assembly

Abstract

A mask frame assembly divided for manufacturing a large AMOLED TV panel and a panel for a mobile device and a manufacturing method thereof are provided to prevent the sag of the center of a frame by forming a rib in the center of the frame. CONSTITUTION: A rib crosses the center of a frame(1). A division mask(2) welded with the frame by the rib is divided into two parts. A mother glass printed with a mask pattern is integrated with a jig. The mother glass jig integrated with the mother glass is installed on the lower side of the frame. The pattern of the mother glass is matched with the division mask.

Description

technical field [0001] The present invention relates to the division of stick masks used to manufacture large-size AMOLED (Active Matrix / Organic Light Emitting Diode: Active Matrix Organic Light Emitting Diode panels) multi-faceted TV panels and mobile device (Mobile) operation panels. Mask frame assembly and method of manufacturing the same. Specifically, it relates to a mask frame assembly and a method of manufacturing the same. When a large-sized multi-faceted mask frame assembly is manufactured using a plurality of divided masks, ribs are formed in the center of the frame to minimize the drooping degree of the frame, thereby When the mask is soldered to the frame, the alignment of the pattern and the lower mother glass can be improved, so that more precise mask soldering can be performed, and the sagging of the frame is minimized due to the ribs in the center, so that it prevents organic matter from being deposited. The shadow (shadow) phenomenon, and ultimately significa...

AI Technical Summary

Problems solved by technology

[0033] In addition, in the past, due to the weight of the mask, the maximum sag value of the central mask was maintained at 150 μm or less. In order to overcome problems such as evaporation shadows, during evaporation, light contact between the mask and the substrate (Substrate) was induced. Permanent magnets are used as mask chucks to prevent shadows caused by mask sagging due to gravity. In this case, there are several problems with the use of permanent magnets: a drastic change in cross-sectional area, and magnetic field interruption at places where NS poles are not placed. The longer the mask, the more difficult it is to overcome the NS coupling of the mask and the fine jitter caused by the residual magnetic field, which leads to the decrease of its positioning accuracy.

[0034] As the size of the glass increases, when using a jig for holding the glass (Glass Keeping), magnets cannot be installed on the holding part that holds the glass, so the deposition quality will be greatly affected when the mask becomes longer.

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