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US 2010/0053126 A1Published application
Electron emission device and image display panel using the same, and image display apparatus and information display apparatus
AssigneeCanon Kabushiki Kaisha
InventorsTamaki Kobayashi, Shoji Nishida, Takuto Moriguchi, Takeo Tsukamoto
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Abstract
An electron emission device includes a polycrystalline film of lanthanum boride, and a size of a crystallite which composes the polycrystalline film is equal to or more than 2.5 nm and equal to or less than 100 nm, preferably the film thickness of the polycrystalline film is equal to or less than 100 nm.
Claims12
An electron emission device comprising a polycrystalline film of lanthanum boride,
- wherein a size of a crystallite which composes the polycrystalline film is equal to or more than 2.5 nm and equal to or less than 100 nm.
Dependencies are inferred from the claim text.