A light source including a field emission cathode, and a...

H - Electricity – 01 – J

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

H01J 1/30 (2006.01) H01J 1/304 (2006.01) H01J 63/04 (2006.01) H01J 63/06 (2006.01)

Patent

CA 2293271

The light source comprises an evacuated container having walls, at least a portion of which consists of an outer glass layer (23, 23') which on at least a major part thereof is coated on the inside with a layer of phosphor (24, 24') forming a luminescent layer and a conductive layer (25, 25') forming an anode. The layer of phosphor (24, 24') is excited to luminescence by electron bombardment from a field emission cathode (40, 40') located in the interior of the container. A modulator electrode is arranged between the cathode (40, 40') and the anode (25, 25') for creating an electrical field necessary for the emission of electrons. The field emission cathode (40, 40') includes a longitudinally extending core (41, 41') having a central axis, and field emitting bodies (42, 42') extending from the core (41, 41'). The field emitting bodies (42, 42') are elongate and are distributed along at least a part of the length of the core (41, 41'). The field emitting bodies (42, 42') extend radially outwards from the core (41, 41') and have free ends provided with field emitting surfaces.

L'invention concerne une source lumineuse comprenant une cathode d'émission par effet de champ, et la cathode elle-même. La source lumineuse comprend un contenant sous vide dont les parois sont constituées, au moins en partie, d'une couche de verre externe (23, 23') dont la face intérieure est recouverte, au moins en majeure partie, d'une couche de phosphore (24, 24') constituant une couche luminescente, et d'une couche conductrice (25, 25') constituant une anode. Pour devenir luminescente, la couche de phosphore (24, 24') est excitée par un bombardement d'électrons provenant de la cathode d'émission par effet de champ (40, 40') située à l'intérieur du contenant. Une électrode de modulation est placée entre la cathode (40, 40') et l'anode (25, 25') pour créer le champ électrique nécessaire à l'émission d'électrons. La cathode d'émission par effet de champ (40, 40') comprend une âme (41, 41') longitudinale ayant un axe central, et des corps à émission de champ (42, 42'). Les corps à émission de champ (42, 42') sont allongés, sont répartis le long d'au moins une partie de la longueur de l'âme (41, 41'), s'étendent radialement de l'âme (41, 41') vers l'extérieur et ont des extrémités libres dotées de surfaces à émission de champ.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

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

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

Rate now

     

Profile ID: LFCA-PAI-O-1414081

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.