Title:
ELECTRON SOURCE DEVICE AND DISPLAY
Document Type and Number:
WIPO Patent Application WO/2004/049372
Kind Code:
A1
Abstract:
An electron source device comprising a porous layer (for example, a porous alumina layer), which is composed of an insulator and has many microholes extending in a direction perpendicular to the major surface, and first and second conductor layers disposed on both sides of the porous layer is characterized in that the current density (I/S) is 1 μA/cm2 or higher when a direct current voltage is applied between the second conductor layer and the first conductor layer while using the second conductor layer as an anode. In this case, S represents the overlapping area among the first conductor layer, the second conductor layer and the porous layer. Consequently, an electron source device having a high electron emission ability and a long life even when the degree of vacuum is low can be obtained at low cost. A display having a high luminous efficiency and high reliability can be realized by using this electron source device.
Inventors:
Ito, Takeo c/o Intellectual, Property Division (Toshiba Corporation 1-1, Shibaura 1-chom, Minato-ku Tokyo, 105-8001, JP)
Matsuda, Hidemi c/o Intellectual, Property Division (Toshiba Corporation 1-1, Shibaura 1-chom, Minato-ku Tokyo, 105-8001, JP)
Inamura, Masaaki c/o Intellectual, Property Division (Toshiba Corporation 1-1, Shibaura 1-chom, Minato-ku Tokyo, 105-8001, JP)
Tanaka, Hajime c/o Intellectual, Property Division (Toshiba Corporation 1-1, Shibaura 1-chom, Minato-ku Tokyo, 105-8001, JP)
Sakai, Kazuo (2-1-43, Seiwadaihigashi Kawanishi-shi, Hyogo, 666-0142, JP)
Matsuda, Hidemi c/o Intellectual, Property Division (Toshiba Corporation 1-1, Shibaura 1-chom, Minato-ku Tokyo, 105-8001, JP)
Inamura, Masaaki c/o Intellectual, Property Division (Toshiba Corporation 1-1, Shibaura 1-chom, Minato-ku Tokyo, 105-8001, JP)
Tanaka, Hajime c/o Intellectual, Property Division (Toshiba Corporation 1-1, Shibaura 1-chom, Minato-ku Tokyo, 105-8001, JP)
Sakai, Kazuo (2-1-43, Seiwadaihigashi Kawanishi-shi, Hyogo, 666-0142, JP)
Application Number:
PCT/JP2003/014980
Publication Date:
June 10, 2004
Filing Date:
November 25, 2003
Export Citation:
Assignee:
KABUSHIKI KAISHA TOSHIBA (1-1 Shibaura 1-chome, Minato-ku, Tokyo, 105-8001, JP)
FUJI PIGMENT CO., LTD. (23-2, Obana 2-chome Kawanishi-shi, Hyogo, 666-0015, JP)
Ito, Takeo c/o Intellectual, Property Division (Toshiba Corporation 1-1, Shibaura 1-chom, Minato-ku Tokyo, 105-8001, JP)
Matsuda, Hidemi c/o Intellectual, Property Division (Toshiba Corporation 1-1, Shibaura 1-chom, Minato-ku Tokyo, 105-8001, JP)
Inamura, Masaaki c/o Intellectual, Property Division (Toshiba Corporation 1-1, Shibaura 1-chom, Minato-ku Tokyo, 105-8001, JP)
Tanaka, Hajime c/o Intellectual, Property Division (Toshiba Corporation 1-1, Shibaura 1-chom, Minato-ku Tokyo, 105-8001, JP)
Sakai, Kazuo (2-1-43, Seiwadaihigashi Kawanishi-shi, Hyogo, 666-0142, JP)
FUJI PIGMENT CO., LTD. (23-2, Obana 2-chome Kawanishi-shi, Hyogo, 666-0015, JP)
Ito, Takeo c/o Intellectual, Property Division (Toshiba Corporation 1-1, Shibaura 1-chom, Minato-ku Tokyo, 105-8001, JP)
Matsuda, Hidemi c/o Intellectual, Property Division (Toshiba Corporation 1-1, Shibaura 1-chom, Minato-ku Tokyo, 105-8001, JP)
Inamura, Masaaki c/o Intellectual, Property Division (Toshiba Corporation 1-1, Shibaura 1-chom, Minato-ku Tokyo, 105-8001, JP)
Tanaka, Hajime c/o Intellectual, Property Division (Toshiba Corporation 1-1, Shibaura 1-chom, Minato-ku Tokyo, 105-8001, JP)
Sakai, Kazuo (2-1-43, Seiwadaihigashi Kawanishi-shi, Hyogo, 666-0142, JP)
International Classes:
H01J29/04; H01J1/304; H01J1/312; H01J9/02; H01J31/12; (IPC1-7): H01J1/30; H01J29/04; H01J31/12
Attorney, Agent or Firm:
Suyama, Saichi (Kanda Higashiyama Bldg, 1 Kandata-cho 2-chom, Chiyoda-ku Tokyo, 101-0046, JP)