(19)

(11)

EP 0 968 520 A1

(12)

(43) Date of publication: 05.01.2000 Bulletin 2000/01 (21) Application number: 98945461.6 (22) Date of filing: 08.10.1998

(51) International Patent Classification (IPC)7: H01J 61/48 // C09K11:00 (86) International application number: PCT/IB9801/567 (87) International publication number: WO 9921/214 (29.04.1999 Gazette 1999/17)

(84) Designated Contracting States: DE FR GB (30) Priority: 20.10.1997 EP 97203266 (71) Applicant: Koninklijke Philips Electronics N.V. 5621 BA Eindhoven (NL)	(72) Inventor: OOMEN, Emmanuel, Wilhelmus, Johannes, Leonardus NL-5656 AA Eindhoven (NL) (74) Representative: Mulder, Cornelis A.M. et al P.O. Box 220 5600 AE Eindhoven 5600 AE Eindhoven (NL)