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

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 l...

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Bibliographische Detailangaben
Hauptverfasser:	WEINGAND,KASPAR,.ER.NAT, BUERK,HERMANN, UNGER,EUGEN,.ER.NAT, HOUBEN,WILFRIED
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	BASIC ELECTRIC ELEMENTS CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS ELECTRICITY GLASS JOINING GLASS TO GLASS OR OTHER MATERIALS METALLURGY MINERAL OR SLAG WOOL SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS
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Beschreibung
Zusammenfassung:	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.