Electron emitter, drive circuit of eletron emitter and method of driving electron emitter

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EP 1 376 641 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	25.10.2006 Bulletin 2006/43

(43)	Date of publication A2:
	02.01.2004 Bulletin 2004/01

(21)	Application number: 03253962.9

(22)	Date of filing: 24.06.2003

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International Patent Classification (IPC):

H01J 1/30^(2006.01)
H01J 31/12^(2006.01)

H01J 1/316^(2006.01)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
	Designated Extension States:
	AL LT LV MK

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Priority:

24.06.2002 JP 2002183481
01.10.2002 JP 2002289127
30.05.2003 JP 2003154412

(71)	Applicant: NGK INSULATORS, LTD.
	Nagoya-City, Aichi Pref. 467-8530 (JP)

(72)	Inventors:
	Takeuchi, Yukihisa., c/o NGK Insulators Ltd Nagoya City, Aichi-ken, 467-8530 (JP) Nanataki, Tsutomu., c/o NGK Insulators Ltd Nagoya City, Aichi-ken, 467-8530 (JP) Ohwada, Iwao., c/o Int.Prop.Dpt NGK Insulators Ltd Nagoya City, Aichi-ken, 467-8530 (JP) Kokune, Nobuyuki c/o NGK Insulators Ltd Nagoya City, Aichi-ken, 467-8530 (JP)

(74)	Representative: Naylor, Matthew John et al
	Mewburn Ellis LLP York House, 23 Kingsway London WC2B 6HP London WC2B 6HP (GB)

(54)	Electron emitter, drive circuit of eletron emitter and method of driving electron emitter

(57) An electron emitter (10A) has an emitter section (14) formed on a substrate (12), a cathode electrode (16) formed on one surface of the emitter section (14), and an anode electrode (20) formed on the same one surface of the emitter section (14) and cooperating with the cathode electrode (16) in providing a slit (18). A pulse generation source (22) applies a drive voltage (Va) between the cathode electrode (16) and the anode electrode (20). The anode electrode (20) is connected to GND (ground). The slit (18) has a width (d) in the range from 0.1 µm to 50 µm.

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