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Patent Searching and Data


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 (3-1, Shinonomecho, Kochi-sh, Kochi 05, 〒7800805, JP)
西村 一仁 (〒05 高知県高知市東雲町3番1号 高知FEL株式会社内 Kochi, 〒7800805, JP)
SASAOKA Hideki (3-1, Shinonomecho, Kochi-sh, Kochi 05, 〒7800805, JP)
Application Number:
JP2011/072324
Publication Date:
April 19, 2012
Filing Date:
September 29, 2011
Export Citation:
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Assignee:
Kochi FEL Co., Ltd. (3-1 Shinonomecho, Kochi-shi Kochi, 05, 〒7800805, JP)
高知FEL株式会社 (〒05 高知県高知市東雲町3番1号 Kochi, 〒7800805, JP)
CENTRAL GLASS COMPANY, LIMITED (5253, Oaza Okiube Ube-sh, Yamaguchi 01, 〒7550001, JP)
セントラル硝子株式会社 (〒01 山口県宇部市大字沖宇部5253番地 Yamaguchi, 〒7550001, JP)
NISHIMURA Kazuhito (3-1, Shinonomecho, Kochi-sh, Kochi 05, 〒7800805, JP)
International Classes:
H01J63/06; H01J63/02
Foreign References:
JP2010282956A
JP2006100254A
JP2008153222A
JP2001319560A
JP2009146816A
JPH01206537A
Attorney, Agent or Firm:
YASUTOMI & Associates (5-36, Miyahara 3-chome Yodogawa-ku, Osaka-sh, Osaka 03, 〒5320003, JP)
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Claims: