Method of manufacturing a plate of electrically insulating material having a pattern of apertures and/or cavities

After a plate of electrically insulating, particularly hard and brittle material has been provided with a mask having a very large number of patterned apertures, it is exposed to at least one jet of abrasive powder particles, which jet is moved relative to the plate. In this way a plate is manufactu...

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Bibliographische Detailangaben
Hauptverfasser:	DE HAAS, FRANCISCUS C. M, VAN LAARHOVEN, FRANCISCUS M. H, VAN BEEK, JOHANNES G
Format:	Patent
Sprache:	eng
Schlagworte:	ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL BASIC ELECTRIC ELEMENTS CABLES CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS CONDUCTORS ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY GRINDING INSULATORS MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS PERFORMING OPERATIONS POLISHING PRINTED CIRCUITS SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES TRANSPORTING
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Beschreibung
Zusammenfassung:	After a plate of electrically insulating, particularly hard and brittle material has been provided with a mask having a very large number of patterned apertures, it is exposed to at least one jet of abrasive powder particles, which jet is moved relative to the plate. In this way a plate is manufactured with a pattern of apertures and/or cavities which are eminently suitable for manipulating electron currents in electronic displays. Plates manufactured in this way may be used, for example, as control plates, spacer plates, or electron transport duct plates in electronic displays.