Electron-emitting device, electron beam apparatus and image display apparatus
AssigneeCanon Kabushiki Kaisha
InventorsHideyasu Tashiro, Yohei Hashizume, Taro Hiroike, Fumikazu Kobayashi
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Abstract
An electron-emitting device according to the present invention, comprises: an insulating member having a top face, a side face and a recess portion formed between the top face and the side face; a cathode electrode which is disposed on the side face and has an electron emitting portion located in a boundary portion between the side face and the recess portion; and a gate electrode which is disposed on the top face and of which an edge faces the electron emitting portion, wherein the boundary portion in which the electron emitting portion is located has concavity and convexity in a direction parallel to the top face.
Claims5
An electron-emitting device, comprising:
- an insulating member having a top face, a side face and a recess portion formed between the top face and the side face;
- a cathode electrode which is disposed on the side face and has an electron emitting portion located in a boundary portion between the side face and the recess portion;
- and
- a gate electrode which is disposed on the top face and of which an edge faces the electron emitting portion, wherein
- the boundary portion in which the electron emitting portion is located has concavity and convexity in a direction parallel to the top face.
An electron-emitting device, comprising:
- an insulating member having a top face, a side face and a recess portion formed between the top face and the side face;
- a cathode electrode which is disposed on the side face and has an electron emitting portion, which is part of the cathode electrode, located in a boundary portion between the side face and the recess portion;
- and
- a gate electrode which is disposed on the top face and of which an edge faces the electron emitting portion, wherein
- the boundary portion in which the electron emitting portion is located has concavity and convexity in a plane parallel to the top face.
Dependencies are inferred from the claim text.