MANUFACTURING METHOD FOR SHADOW MASK OF CATHODE-RAY TUBE

摘要

making a flat thin metal plate have a curvature by pressing process; applying a photoresist on the plate and placing an original plate with a number of patterns of small holes on the top of the plate and an original plate with a number of patterns of large holes on the bottom; exposing the patterns to infrared light and removing the unexposed parts with a developer; and etching away the opened parts after the developing with etchants.