Process for manufacturing glass back cover of organic electroluminescence display device on planer glass etching groove

This invention relates to a mask used in glass etching and its application in glass etching, in which, the mask includes at least two layers of structures, one is mask material, the other is a glue layer, the mask material is placed above the glue layer and contacted with an etched glass via the glue layer, the mask can be bond on the etched glass stably and not easy to be corroded by acid, and the mask is fixed in the etching of glasses. It is not easy to fall off, it can prevent from acid liquid erosion. It's cost is low, efficiency is high. It can be randomly etched according to the etched pattern, and the groove can be manufactured with high accuracy.