Perforated plates for electron control, in particular for plasma-cathode displays

摘要

In thin-glass perforated plates for electron control, the etching of the openings 3 in the glass plates 1 takes place after the metallic conductor layout 2 is built up. As a result, lateral undercuts 4 of the printed conductors are also produced so that the etch overhangs can bend and may possibly lead to short-circuits with the next board. In order to avoid this, according to the invention the metallic structures in the region of the holes through which the electrons pass are provided in a depression 5 of the pre-etched glass. <IMAGE>