Electric lamp and discharge devices – Electrode and shield structures – Point source cathodes
Patent
1995-10-30
1997-09-30
Patel, Nimeshkumar
Electric lamp and discharge devices
Electrode and shield structures
Point source cathodes
313309, 313351, H01J 130
Patent
active
056729332
ABSTRACT:
An electron emitter plate (10, 10') for an FED image display has a gate conductive layer (22) spaced by a dielectric insulating layer (25) from a cathode conductive layer formed into a mesh (18). Arrays (12) of microtips (14) are located within mesh spacings (16) for field emission of electrons toward a phosphor layer (34) of an anode plate (11). Cathode layer (18) is patterned into column stripes (19) separated by gaps (17). Gate layer (22) is patterned into row cross-stripes (24) separated by gaps (23) which intersect with stripes (19) at matrix addressable pixel locations (30). Resistive layer (15) is patterned into stripes (40) separated by gaps (42) which interrupt column-to-column electrical communication through resistive layer (15). Unetched strips (43) are provided to bridge gap discontinuities for deposition of gate layer (22) at crossovers of rows (24) between columns (19). In one embodiment, gate layer (22) has a mesh pattern with apertured pads (46) commonly connected along resistive gap edges by marginal buses (50) formed on borders (49) of resistive layer (15) along gaps (42). Adjacent marginal buses (50) are connected by crossover buses (52) formed over bridging strips (43).
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Shen Chi-Cheong
Taylor Robert H.
Wilson Arthur M.
Brady III Wade James
Donaldson Richard L.
Franz Warren L.
Patel Nimeshkumar
Texas Instruments Incorporated
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