Light source, and a field emission cathode

Details Light source, and a field emission cathode Light source, and a field emission cathode

2005-03-29

2005-03-29

Patel, Nimeshkumar D. (Department: 2879)

Electric lamp and discharge devices

Electrode and shield structures

Point source cathodes

C313S34600R, C313S351000, C313S309000, C313S310000, C313S311000

Reexamination Certificate

active

06873095

ABSTRACT:
The light source, comprises an evacuated container having walls, including an outer glass layer (23) which on at least part thereof is coated on the inside with a layer of phosphor (24) forming a luminescent layer and a conductive layer (25) forming an anode. The phosphor (24) is excited to luminescence by electron bombardment from a field emission cathode (40) located in the interior of the container. The field emission cathode (40) comprises a carrier having a diameter in the mm range. At least a portion of the surface of the carrier is provided with a conductive layer having surface irregularities in the form of tips, having a radial extension being less than about 10 μm. Due to the geometry and the tips, the electric field is concentrated and amplified at the field emission surface.

REFERENCES:
patent: 3758809 (1973-09-01), Menelly et al.
patent: 4818914 (1989-04-01), Brodie
patent: 5371431 (1994-12-01), Jones et al.
patent: 5764004 (1998-06-01), Rabinowitz
patent: 5773834 (1998-06-01), Yamamoto et al.
patent: 6008575 (1999-12-01), Kaftanov et al.
patent: 0 905 737 (1999-03-01), None
patent: 1022764 (2000-07-01), None
patent: 510 412 (1999-05-01), None
patent: 9707531 (1997-02-01), None
patent: 9821736 (1998-05-01), None
patent: 9931701 (1999-06-01), None
Chubin, N. et al. “Vacuum Fluorescent Light Source with Carbon Fibers Field Emission Cathode.”Eighth International Vacuum Microelectronics Conference Technical Digest.(1995): 516-521.
Chakhovskoi, Andrei G. et al. “Phosphor selection constraints in application of gated field-emission microcathodes to flat panel displays.”J. Vac. Sci. Technol.(Mar./Apr. 1994): 785-789.

Affiliated with

Also associated with

Rating

Light source, and a field emission cathode does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Light source, and a field emission cathode, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Light source, and a field emission cathode will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3456311