The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 20, 2007
Filed:
Nov. 13, 2003
Nobuhiro Ito, Kanagawa, JP;
Hideaki Mitsutake, Kanagawa, JP;
Nobuhiro Ito, Kanagawa, JP;
Hideaki Mitsutake, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An electron beam emitting apparatus has a first plate with an electron-emitting device, and an electrodeopposed to the first plate, and the electrodeis applied a potential to accelerate electrons emitted from the electron-emitting device. In the electron beam emitting apparatus, a potential defining regionis provided a surface of the first plate on the electrodeside and a first potential defining region forming the potential defining regionis provided in a projective area of the electrodeonto the potential defining region; and, where d represents a distance between the electrodeand the potential defining region, an additional potential defining region is defined in the range of 0.83d in all directions parallel to the first plate from the edge of the projective area of the electrodeonto the potential defining region. This stabilizes trajectories of electrons and permits an excellent image to be formed without deviation of light emission positions.