Device for manufacture including a deposition mask

Abstract

A device for manufacture including a deposition mask includes a clamper for fixing an end of a divided mask sheet and having a pin hole, a clamping pin in the clamper for being inserted into the pin hole, and an elevator for elevating the clamping pin.

Description

RELATED APPLICATIONS[0001]This application claims priority to and the benefit of Korean Patent Application No. 10-2012-0011423 filed in the Korean Intellectual Property Office on Feb. 3, 2012, the entire content of which is incorporated herein by reference.BACKGROUND[0002]1. Field[0003]The described technology relates generally to a device for manufacture including a deposition mask.[0004]2. Description of the Related Art[0005]An organic light emitting diode (OLED) display includes two electrodes and an organic emission layer therebetween. Electrons injected from one electrode and holes injected from the other electrode are coupled with each other at the organic emission layer to form excitons, and the excitons emit light while emitting energy.[0006]To form the organic emission layer, an organic material must be deposited on a substrate, and to achieve this, a deposition source filled with the organic material is heated to evaporate the organic material and spray the same over the s...

AI Technical Summary

Benefits of technology

[0011]Embodiments of the present invention provide a device for manufacture including a deposition mask for reducing or preventing the generation of wrinkles in a divided mask sheet during clamping, and controlling or avoiding mis-clamping (e.g., erroneous clamping).

[0020]According to the present embodiment, the suction groove and the clamping pin may be installed in the clamper for fixing the divided mask sheet so the divided mask sheet may be clamped while it is unwrinkled to be flat before it is loaded to the mask frame. Therefore, the wrinkles and the mis-clamping phenomenon occurring during clamping the divided mask sheet may be eliminated.

Problems solved by technology

However, the divided mask combines both ends of the divided mask sheet with the clamper, and applies a tension force thereto, so both ends of the divided mask sheet may be wrinkled.

This is because, when a thin-film divided mask sheet is clamped, the thin-film divided mask sheet might not withstand the clamping force of the clamper, so wrinkles may be generated at both the ends of the divided mask.

The clamping force may be weakened to stop the generation of wrinkles, but in that case, accurate tension force might not be applied and the clamping may be loose.

Further, the divided mask sheet may be fixed by vacuum in the stage before it is loaded to a mask frame, and a position of the divided mask sheet may be changed while the clamper clamps the divided mask sheet, so that one or both ends of the divided mask sheet might not be clamped at an accurate position.