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US 7,682,213 B2Granted
Method of manufacturing an electron emitting device by terminating a surface of a carbon film with hydrogen
AssigneeCanon Kabushiki Kaisha
InventorsRyoji Fujiwara, Yoji Teramoto
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Abstract
An electron emission device is provided which has sufficient on/off characteristics and is capable of efficiently emitting electrons with a low voltage. An electron emission device includes a substrate, a cathode electrode, a gate electrode, which are arranged on the substrate, an insulation layer covering the surface of the cathode electrode, and a dipole layer formed by terminating the surface of the insulation layer with hydrogen.
Claims8
A method for manufacturing an electron-emitting device, comprising the steps of:
- (A) providing a first electrode having a carbon film on its surface;
- (B) providing a second electrode apart from the first electrode by a predetermined distance;
- and
- (C) terminating the surface of the carbon film with hydrogen so that the carbon film has positive electron affinity both when a drive voltage for emitting electrons is applied and when the drive voltage is not applied between the first and the second electrodes, wherein an electron affinity of the carbon film surface terminated with hydrogen is 2.5 eV or more.
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A method for manufacturing an electron-emitting device, comprising the steps of:
- (A) providing a substrate having an electrode;
- (B) providing a carbon film on the electrode;
- and
- (C) terminating the surface of the carbon layer with hydrogen by heating the substrate in atmosphere containing hydrocarbon gas and hydrogen gas, wherein an electron affinity of the carbon film surface terminated with hydrogen is 2.5 eV or more.
1 more element
Dependencies are inferred from the claim text.