Electron-emitting device as well as electron source and image-forming apparatus using such devices
AssigneeCanon Kabushiki Kaisha
InventorTakeo Tsukamoto
Life of this patent
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Abstract
An electron-emitting device comprises a pair of electrodes and an electroconductive thin film therebetween having an electron-emitting region. The electroconductive thin film is coated with an additional film at the electron-emitting region to provide an additional resistance within a range from 500 .OMEGA. to 100 k.OMEGA..
Claims8
An electron-emitting device comprising a pair of electrodes, an electro conductive thin film arranged between and connected to said electrodes, said electro conductive thin film containing a fissure so that a high potential one-side part and a low potential other-side part of the electro conductive thin film are arranged with respect to the fissure and a laminate film of semiconductor or metal oxide layer and carbon or carbon compound layer coated on a fissure forming end of at least one of the high potential one-side part and the low potential other-side of the electroconductive thin film.
Dependencies are inferred from the claim text.