Electric lamp and discharge devices – With luminescent solid or liquid material – Vacuum-type tube
Patent
1995-11-01
1996-11-26
O'Shea, Sandra L.
Electric lamp and discharge devices
With luminescent solid or liquid material
Vacuum-type tube
313309, 313336, 445 41, H01J 162, H01J 6304, H01J 102, H01J 116
Patent
active
055789005
ABSTRACT:
A field emission display having an ion pump, for removal of outgassed material, is described. The display has a baseplate and an opposing face plate. A substrate acts as a base for the baseplate. There are parallel, spaced conductors acting as cathode electrodes, over the substrate. An insulating layer covers the cathode electrodes and the substrate, and parallel, spaced conductors act as gate electrodes and overlay the insulating layer. There is a plurality of openings extending through the insulating layer and the gate electrodes. At each of the openings is a field emission microtip connected to and extending up from one of the cathode electrodes. The faceplate has a glass base and is mounted opposite and parallel to the baseplate. A conducting anode electrode covers the glass base. There is a pattern of phosphorescent material over the conducting anode electrode, so that when electrons which are emitted from the field emission microtips strike the pattern of phosphorescent material, light is emitted, as well as outgassed material. Ion pump cathode electrodes formed of a gettering material cover the gate electrodes, so that during display operation the outgassed material is collected at the ion pump cathode electrodes. Alternately, the ion pump cathode may be formed on a focusing electrode, on a focusing mesh, or on other electrode structures.
REFERENCES:
patent: 5063323 (1991-11-01), Longo et al.
patent: 5083958 (1992-01-01), Longo et al.
patent: 5223766 (1993-06-01), Nakayama et al.
Peng Chao-Chi
Tsai Chun-hui
Ackerman Stephen B.
Haynes Mack
Industrial Technology Research Institute
O'Shea Sandra L.
Saile George O.
LandOfFree
Built in ion pump for field emission display does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Built in ion pump for field emission display, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Built in ion pump for field emission display will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1975576