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Title:
ELECTRON EMISSION ELEMENT AND PRODUCTION METHOD THEREFOR, AND IMAGE DISPLAY UNIT USING THIS
Document Type and Number:
WIPO Patent Application WO/2002/007180
Kind Code:
A1
Abstract:
An electron emission element capable of improving the focusing performance of emitted electrons. The electron emission element comprises a cathode electrode, an insulation layer, and an electron drawing electrode that are laminated in that order on a substrate, and an electron emission layer provided on the bottom surface of a hole reaching from the drawing electrode up to the cathode electrode with which the electron emission layer contacts, wherein the electron emission layer is provided so that the front surface thereof is closer to the substrate than the interface between the cathode electrode and the insulation layer, and the contact area between the electron emission layer and the cathode electrode is limited to a peripheral area, excluding the center portion, on the bottom surface of the hole. Accordingly, since the electron emission layer receives electrons from the cathode electrode positioned at the side surface thereof, electrons are mostly emitted from the ends of the front surface of the electron emission layer to thereby enhance the focusing performance of electrons.

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Inventors:
SHIRATORI TETSUYA (JP)
AKIYAMA KOJI (JP)
KUROKAWA HIDEO (JP)
Application Number:
PCT/JP2001/006114
Publication Date:
January 24, 2002
Filing Date:
July 16, 2001
Export Citation:
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Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
SHIRATORI TETSUYA (JP)
AKIYAMA KOJI (JP)
KUROKAWA HIDEO (JP)
International Classes:
H01J1/304; H01J29/04; H01J31/12; H01J9/02; (IPC1-7): H01J1/304; H01J9/02; H01J31/12; H01J29/04
Foreign References:
JP2000067736A2000-03-03
US6028391A2000-02-22
JP2000067740A2000-03-03
Other References:
See also references of EP 1313122A4
Attorney, Agent or Firm:
Nakajima, Shiro (2-1 Toyosaki 3-chom, Kita-ku Osaka-shi Osaka, JP)
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