Flat screen display with cathode field effect transmission and anode/extraction grid together with electronic bombardment permeable ion parasitic reduction filter.

摘要

The flat screen display has a cathode (1) with field effect electronic transmission (2). There is an anode (5) illuminated by the cathode, together with an extraction grid (3). There is a grid (20) permeable to electronic bombardment which is polarised to prevent ion parasitics.