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 (JP)
MATSUDA HIDEMI (JP)
INAMURA MASAAKI (JP)
TANAKA HAJIME (JP)
SAKAI KAZUO (JP)
MATSUDA HIDEMI (JP)
INAMURA MASAAKI (JP)
TANAKA HAJIME (JP)
SAKAI KAZUO (JP)
Application Number:
PCT/JP2003/014980
Publication Date:
June 10, 2004
Filing Date:
November 25, 2003
Export Citation:
Assignee:
TOSHIBA KK (JP)
FUJI PIGMENT (JP)
ITO TAKEO (JP)
MATSUDA HIDEMI (JP)
INAMURA MASAAKI (JP)
TANAKA HAJIME (JP)
SAKAI KAZUO (JP)
FUJI PIGMENT (JP)
ITO TAKEO (JP)
MATSUDA HIDEMI (JP)
INAMURA MASAAKI (JP)
TANAKA HAJIME (JP)
SAKAI KAZUO (JP)
International Classes:
H01J1/304; H01J1/312; H01J9/02; H01J31/12; H01J29/04; (IPC1-7): H01J1/30; H01J29/04; H01J31/12
Foreign References:
| EP0923104A2 | 1999-06-16 | |||
| JPH11204024A | 1999-07-30 | |||
| JP2000030603A | 2000-01-28 |
Other References:
See also references of EP 1566823A4
Attorney, Agent or Firm:
Suyama, Saichi (1 Kandata-cho 2-chom, Chiyoda-ku Tokyo, JP)
Download PDF: