Title:
FIELD-EMISSION LIGHT SOURCE
Document Type and Number:
WIPO Patent Application WO/2012/049975
Kind Code:
A1
Abstract:
To provide a field-emission light source capable of suppressing the field intensity in an electron-emission film on a cathode electrode within a low-intensity range and keeping the density of an incident electron beam that is incident on a phosphor within a preferable range, without changing electron emission characteristics of, or the voltage applied to, the electron-emission film. A field-emission light source characterized by comprising: a vacuum sealing container; and a cathode electrode disposed along the central axis of the vacuum sealing container and including a rod-shaped support bar and one or a plurality of rod-shaped electron-emission members that are embedded in the periphery of the support bar and have an electron-emission film formed at a portion exposed from the support bar, wherein D > r is satisfied, where D is the curvature radius of the support bar, and r is the curvature radius of the electron-emission member.
Inventors:
NISHIMURA KAZUHITO (JP)
SASAOKA HIDEKI (JP)
OOKA MASAHIRO (JP)
SASAOKA HIDEKI (JP)
OOKA MASAHIRO (JP)
Application Number:
PCT/JP2011/072324
Publication Date:
April 19, 2012
Filing Date:
September 29, 2011
Export Citation:
Assignee:
KOCHI FEL CO LTD (JP)
CENTRAL GLASS CO LTD (JP)
NISHIMURA KAZUHITO (JP)
SASAOKA HIDEKI (JP)
OOKA MASAHIRO (JP)
CENTRAL GLASS CO LTD (JP)
NISHIMURA KAZUHITO (JP)
SASAOKA HIDEKI (JP)
OOKA MASAHIRO (JP)
International Classes:
H01J63/06; H01J63/02
Foreign References:
| JP2010282956A | 2010-12-16 | |||
| JP2006100254A | 2006-04-13 | |||
| JP2008153222A | 2008-07-03 | |||
| JP2001319560A | 2001-11-16 | |||
| JP2009146816A | 2009-07-02 | |||
| JPH01206537A | 1989-08-18 |
Attorney, Agent or Firm:
YASUTOMI & Associates (JP)
Patent business corporation Yasutomi international patent firm (JP)
Patent business corporation Yasutomi international patent firm (JP)
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Claims: