Electric lamp and discharge devices – With luminescent solid or liquid material – Coplanar electrodes
Patent
1995-08-24
1997-09-09
O'Shea, Sandra L.
Electric lamp and discharge devices
With luminescent solid or liquid material
Coplanar electrodes
313309, 313336, 313351, H01J 162, H01J 6304, H01J 116, H01J 153
Patent
active
056660243
ABSTRACT:
An electron emitter plate (110) for an FED image display has an extraction (gate) electrode (122, 222) spaced by a dielectric insulating layer (25) from a cathode electrode including a conductive mesh (118, 218). Circular arrays (112) of microtips (14) are located concentrically within mesh spacings (116, 216) on a resistive layer (15), within apertures (26) formed on ring-shaped pads (127, 227) patterned in an extraction electrode (122). Mesh spacings (116) and pads (127) are circular. Mesh spacings (226) and pads (227) are hexagonal. For reduced capacitance, dielectric material (25) is etched from cores (144) of rings (127, 227) and from toroidal regions (148) below rings (127, 227). Mesh spacings (116, 216) are hexagonal close-packed and mesh material (118, 218) is removed from portions (142) of cathode electrode. Y-shaped bridging strips (129') have nodes (146) located over removed cathode electrode portions (142).
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Brady III Wade James
Donaldson Richard L.
Franz Warren L.
Haynes Mark
O'Shea Sandra L.
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