Method of manufacturing a plate of electrically insulating mater

Details Method of manufacturing a plate of electrically insulating mater Method of manufacturing a plate of electrically insulating mater

1996-06-20

1998-11-10

Rose, Robert A.

Abrading

Abrading process

Utilizing shield

451 78, 451 38, B24C 100

Patent

active

058335161

ABSTRACT:
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.

REFERENCES:
patent: 3270464 (1966-09-01), Bowling, Jr.
patent: 5560743 (1996-10-01), Imayama et al.
patent: 5593528 (1997-01-01), Dings et al.

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