(19)
(11) EP 0 948 801 A1

(12)

(43) Date of publication:
13.10.1999 Bulletin 1999/41

(21) Application number: 98936625.0

(22) Date of filing: 19.08.1998
(51) International Patent Classification (IPC): 
H01J 9/ 02( . )
H01J 9/ 38( . )
H01J 1/ 30( . )
H01J 9/ 18( . )
H01J 29/ 04( . )
(86) International application number:
PCT/IB1998/001279
(87) International publication number:
WO 1999/017326 (08.04.1999 Gazette 1999/14)
(84) Designated Contracting States:
DE FR GB NL

(30) Priority: 29.09.1997 EP 19970202977

(71) Applicant: Koninklijke Philips Electronics N.V.
5621 BA Eindhoven (NL)

(72) Inventors:
  • DE SAMBER, Mark, AndrĂ©
    NL-5656 AA Eindhoven (NL)
  • GEHRING, Frederik, Christiaan
    NL-5656 AA Eindhoven (NL)
  • VAN ZUTPHEN, Tom
    NL-5656 AA Eindhoven (NL)
  • KROON, Ron
    NL-5656 AA Eindhoven (NL)
  • HIJZEN, Erwin, Adolf
    NL-5656 AA Eindhoven (NL)

(74) Representative: Koppen, Jan 
INTERNATIONAAL OCTROOIBUREAU B.V., Prof. Holstlaan 6
5656 AA Eindhoven
5656 AA Eindhoven (NL)

   


(54) METHOD OF MANUFACTURING AN ELECTRON GUN COMPRISING A SEMICONDUCTOR CATHODE