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1. (WO2007006479) CARBON BASED FIELD EMISSION CATHODE AND METHOD OF MANUFACTURING THE SAME
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2007/006479 International Application No.: PCT/EP2006/006591
Publication Date: 18.01.2007 International Filing Date: 06.07.2006
Chapter 2 Demand Filed: 08.05.2007
IPC:
H01J 9/02 (2006.01) ,H01J 1/304 (2006.01)
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
J
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
9
Apparatus or processes specially adapted for the manufacture of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
02
Manufacture of electrodes or electrode systems
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
J
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
1
Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
02
Main electrodes
30
Cold cathodes
304
Field-emissive cathodes
Applicants:
LIGHTLAB SWEDEN AB [SE/SE]; Vikingavägen 17E S-133 33 Saltsjöbaden, SE (AllExceptUS)
HU, Qiu-Hong [SE/SE]; SE (UsOnly)
Inventors:
HU, Qiu-Hong; SE
Agent:
AWAPATENT AB; Box 11394 S-404 28 Göteborg, SE
Priority Data:
05106440.014.07.2005EP
Title (EN) CARBON BASED FIELD EMISSION CATHODE AND METHOD OF MANUFACTURING THE SAME
(FR) MATERIAU CARBONE POUR CATHODE A EMISSION DE CHAMP
Abstract:
(EN) A method for manufacturing a field emission cathode comprising the steps of providing a liquid compound comprising a liquid phenolic resin and at least one of a metal salt and a metal oxide, arranging a conductive cathode support (2) such that said conductive cathode support comes in a vicinity of said liquid compound (2) and heating said liquid compound (2). By performing the above mentioned steps, a solid compound foam is formed which is transformed from said liquid compound, said solid compound foam at least partly covering said conductive cathode support. Advantage with the novel compound comprises its improved work function and the minimal or non-existing training period. Hence, this novel method will provide the possibility to manufacture a field emission cathode at a fraction of the cost associated with the in prior art used methods and materials.
(FR) L'invention concerne un procédé pour fabriquer une cathode à émission de champ, qui consiste à fournir un composé liquide comprenant une résine phénolique liquide et au moins un sel métallique et un oxyde de métal, à ménager un support de cathode conductrice de manière à ce que ledit support de cathode conductrice soit à proximité dudit composé liquide, et à chauffer ledit composé liquide. En effectuant les opérations indiquées ici, on forme une mousse composée solide, qui est transformée à partir dudit composé liquide, ladite mousse composée recouvrant au moins partiellement ledit support de cathode conductrice. L'avantage du nouveau composé comprend sa fonction de travail améliorée et une durée d'apprentissage minimale ou nulle. De cette manière, le nouveau procédé offre la possibilité de fabriquer une cathode à émission de champ à une fraction des coûts associés aux procédés et matériaux utilisés dans les techniques antérieures.
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Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
US20090167140CN101223622IN80/DELNP/2008