Electron emission element and method for same
AssigneeSharp Kabushiki Kaisha
InventorsHidekazu Hayashi, Tokio Taguchi, Kenichiro Nakamatsu, Tadashi Iwamatsu, Kohji Shinkawa, Mai Takasaki, Toshihiro Kaneko, Atsushi Niinoh
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Abstract
An electron emitting device (100) includes a first electrode (12), a second electrode (52), and a semi-conductive layer (30) provided between the first electrode (12) and the second electrode (52). The semi-conductive layer (30) includes a porous alumina layer (32) having a plurality of pores (34) and silver (42) supported in the plurality of pores (34) of the porous alumina layer (32).
Claims13
An electron emitting device comprising a first electrode, a second electrode, and a semi-conductive layer provided between the first electrode and the second electrode, wherein
- the semi-conductive layer includes a porous alumina layer having a plurality of pores and silver supported in the plurality of pores of the porous alumina layer, and
- the first electrode is formed of an aluminum substrate containing aluminum in an amount of not less than 99.00 mass % but less than 99.99 mass %, and the porous alumina layer is an anodized layer formed at a surface of the aluminum substrate.
An electron emitting device comprising a first electrode, a second electrode, and a semi-conductive layer provided between the first electrode and the second electrode, wherein
- the semi-conductive layer includes a porous alumina layer having a plurality of pores and silver supported in the plurality of pores of the porous alumina layer, and
- the plurality of pores of the porous alumina layer have a stepped side surface.
An electron emitting device comprising a first electrode, a second electrode, and a semi-conductive layer provided between the first electrode and the second electrode, wherein
- the semi-conductive layer includes a porous alumina layer having a plurality of pores and silver supported in the plurality of pores of the porous alumina layer, and
- the silver contains silver nanoparticles having an average particle size which is not less than 1 nm and not more than 50 nm.
A method of producing an electron emitting device comprising a first electrode, a second electrode, and a semi-conductive layer provided between the first electrode and the second electrode, wherein
- the semi-conductive layer includes a porous alumina layer having a plurality of pores and silver supported in the plurality of pores of the porous alumina layer, the method comprising:
- a step of providing an aluminum substrate or an aluminum layer supported by a substrate;
- a step of anodizing a surface of the aluminum substrate or the aluminum layer to form a porous alumina layer;
- and
- a step of applying silver nanoparticles in a plurality of pores of the porous alumina layer.
Dependencies are inferred from the claim text.