Field emission device having a focusing structure and method of

Details Field emission device having a focusing structure and method of Field emission device having a focusing structure and method of

1998-07-07

2000-07-25

Patel, Vip

Electric lamp and discharge devices

Discharge devices having a multipointed or serrated edge...

313336, 313351, 313451, 313310, H01J 102

Patent

active

060940018

ABSTRACT:
A field emission device (400) includes a substrate (414), a cathode (415) disposed on substrate (414), a dielectric layer (418) disposed on cathode (415) and defining an emitter well (421) and further defining a focusing well (448), an electron emitter (420) disposed within emitter well (421) and connected to cathode (415), a gate electrode (422) disposed on dielectric layer (418), and a focusing structure (450) disposed within focusing well (448) and connected to cathode (415) for focusing an electron beam (430) emitted by electron emitter (420). A method for fabricating field emission device (400) includes directing a second collimated vapor beam (461) toward focusing well (448) subsequent to forming an encapsulating layer (478) over emitter well (421), thereby forming focusing structure (450).

REFERENCES:
patent: 4874981 (1989-10-01), Spindt
patent: 5278472 (1994-01-01), Smith et al.
patent: 5451175 (1995-09-01), Smith et al.

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