US 6,982,521 B2
Visual display with cathode plate connected to a separate backplate
Ingemar V Rodriguez, 13716 Fontanelle Pl., San Diego, Calif. 92128 (US); and William P Bischoff, 1874 Lindsley Park Dr., San Marcos, Calif. 92069 (US)
Filed on Jun. 01, 2001, as Appl. No. 9/872,723.
Claims priority of provisional application 60/208710, filed on Jun. 01, 2000.
Prior Publication US 2002/0044130 A1, Apr. 18, 2002
Int. Cl. H01J 1/62 (2006.01)
U.S. Cl. 313—495 23 Claims
OG exemplary drawing
 
1. A visual display comprising:
a cathode plate in the form of a field effect emission device including:
a substrate and
an emission layer on one face of the substrate, the emission layer having:
a multiplicity of emitters and gates, arranged as an array of emission pixels and
conductive connections in the emission layer to the emitters and the gates;
the substrate having:
first conductive vias provided through the substrate or at least a front layer thereof to at least some of the said conductive connections in the emission layer for electrical connection to their emitters and gates and
second conductive vias depending from a back layer of the cathode plate, and
an anode plate; characterised in that it includes:
a separate back plate, wherein the cathode plate back layer is carried on the front side of the back plate, the back plate being continuous across the back side of the cathode plate; and
a frame connecting the back plate to the anode plate; and
further wherein for connection to the cathode plate, the back plate has vias in a front layer positioned to connect via solder connections with the second vias depending from the conductive back layer of the cathode plate.