(19)
(11) EP 0 713 241 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
05.06.1996 Bulletin 1996/23

(43) Date of publication A2:
22.05.1996 Bulletin 1996/21

(21) Application number: 96100917.2

(22) Date of filing: 04.02.1988
(51) International Patent Classification (IPC)6: H01J 31/12
(84) Designated Contracting States:
DE FR GB IT NL

(30) Priority: 06.02.1987 JP 24872/87
06.02.1987 JP 24873/87
23.02.1987 JP 38075/87
23.02.1987 JP 38076/87
04.03.1987 JP 47816/87
06.03.1987 JP 50344/87
09.03.1987 JP 52113/87
24.03.1987 JP 67892/87
26.03.1987 JP 70467/87
27.03.1987 JP 73601/87

(62) Application number of the earlier application in accordance with Art. 76 EPC:
88101626.5 / 0278405

(71) Applicant: CANON KABUSHIKI KAISHA
Tokyo (JP)

(72) Inventors:
  • Okunuki,Masahiko
    Nishi Tama-gun, Tokyo (JP)
  • Suzuki,Akira
    Yokohama-shi, Kanagawa-ken (JP)
  • Shimoda,Isamu
    Zama-shi, Kanagawa-ken (JP)
  • Kaneko,Tetsuya
    Yokohama-shi, Kanagawa-ken (JP)
  • Tsukamoto,Takeo
    Atsugi-shi, Kanagawa-ken (JP)
  • Takeda,Toshihiko
    Tokyo (JP)
  • Yonehara,Takao
    Atsugi-shi, Kanagawa-ken (JP)
  • Ichikawa,Takeshi
    Sendai-shi, Miyagi-ken (JP)

(74) Representative: Pellmann, Hans-Bernd, Dipl.-Ing. et al
Patentanwaltsbüro Tiedtke-Bühling-Kinne & Partner Bavariaring 4
80336 München
80336 München (DE)

 
Remarks:
This application was filed on 23 - 01 - 1996 as a divisional application to the application mentioned under INID code 62.
 


(54) A display device comprising an electron emission element


(57) A multi type electron emission element comprises a plurality of electrodes formed on a deposition surface of an insulating material and each having a conical portion of a single crystal, an insulating layer formed on the deposition surface and having openings respectively centered on the conical portions, and a deriving electrodes, part of which is formed near at least the conical portions, the deriving electrode being formed on the insulating layer.






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