Spacer for flat panel display

Details Spacer for flat panel display Spacer for flat panel display

1995-06-07

1996-10-08

Bradley, P. Austin

Electric lamp or space discharge component or device manufacturi

Process

With assembly or disassembly

445 24, H01J 130, H01J 926

Patent

active

055625177

ABSTRACT:
A spacer 40 for use in a field emission device comprises a comb-like structure having a plurality of elongated filaments 42 joined to a support member 44. The filaments 42, which may be glass, are positioned longitudinally in a single layer between the facing surfaces of the anode structure 10 and the electron emitting structure 12. Support member 44 is positioned entirely outside the active regions of anode structure 10 and emitting structure 12. Spacer 40 provides voltage isolation between the anode structure 10 and the cathode structure 12, and also provides standoff of the mechanical forces of vacuum within the assembly. In a second embodiment, spacer 50 comprises elongated filaments 52 joined at each end to a support member 54a and 54b, the additional support facilitating handling, fabrication and assembly. In an additional embodiment, a filament 70 of nonuniform diameter contacts planar surfaces 74 and 76 only at the high spots 72 of filament 70, thereby reducing the shadowing of the beam on the display surface.

REFERENCES:
patent: 3778127 (1973-12-01), Langston, Jr. et al.
patent: 3858284 (1975-01-01), Costa et al.
patent: 4341980 (1982-07-01), Noguchi et al.

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