(19)
(11) EP 1 463 022 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
04.05.2005 Bulletin 2005/18

(43) Date of publication A2:
29.09.2004 Bulletin 2004/40

(21) Application number: 04251718.5

(22) Date of filing: 25.03.2004
(51) International Patent Classification (IPC)7: G09G 3/22
(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 PL PT RO SE SI SK TR
Designated Extension States:
AL HR LT LV MK

(30) Priority: 26.03.2003 JP 2003086501
03.10.2003 JP 2003345992
08.12.2003 US 730754
09.12.2003 JP 2003410830
12.03.2004 JP 2004070859

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

(72) Inventors:
  • Takeuchi, Yukihisa, c/o Intellectual Property Dept
    Nagoya City Aichi-ken, 467-8530 (JP)
  • Nanataki, Tsutomu, c/o Intellectual Property Dept.
    Nagoya City Aichi-ken, 467-8530 (JP)
  • Ohwada, Iwao, c/o Intellectual Property Dept.
    Nagoya City Aichi-ken, 467-8530 (JP)
  • Akao, Takayoshi, c/o Intellectual Property Dept.
    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 display apparatus, method of driving electron emitter display apparatus, apparatus for driving electron emitter display apparatus


(57) One image is displayed in a period as one frame, which includes one charge accumulation period and one light emission period. In the charge accumulation period (Td), all electron emitters (12) are scanned, and voltages depending on the luminance levels of corresponding pixels are applied to the electron emitters (12) which correspond to pixels to be turned on (to emit light), to accumulate charges (electrons) in amounts depending on the luminance levels of corresponding pixels in the electron emitters (12) which correspond to pixels to be turned on. In the next light emission period (Th), a constant voltage is applied to all the electron emitters (12) to emit electrons in amounts depending on the luminance levels of corresponding pixels from the electron emitters (12) which correspond to pixels to be turned on, thereby emitting light from the pixels to be turned on.






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