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:
Mar. 31, 2009
Filed:
Aug. 25, 2005
Hisanori Tsuda, Atsugi, JP;
Masaru Kamio, Sagamihara, JP;
Ihachiro Gofuku, Chigasaki, JP;
Yasue Sato, Machida, JP;
Yoshiyuki Shimada, Fukaya, JP;
Hiromasa Mitani, Hiratsuka, JP;
Kazuyuki Seino, Fukaya, JP;
Takashi Nishimura, Fukaya, JP;
Hisanori Tsuda, Atsugi, JP;
Masaru Kamio, Sagamihara, JP;
Ihachiro Gofuku, Chigasaki, JP;
Yasue Sato, Machida, JP;
Yoshiyuki Shimada, Fukaya, JP;
Hiromasa Mitani, Hiratsuka, JP;
Kazuyuki Seino, Fukaya, JP;
Takashi Nishimura, Fukaya, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
In an image display apparatus composed of a vacuum container having an electron source composed of multiple electron-emitting devices and a phosphor film that is irradiated with an electron from the electron source to emit light for display, an ion pump for exhausting the vacuum container through a communicating path by virtue of an action of a magnetism forming portion is arranged. A magnetic shielding member is arranged in a space where the ion pump and the electron-emitting devices are in communication with each other, whereby an influence of a magnetic field generated by the magnetism forming portion on the trajectory of an electron emitted from any one of the electron-emitting devices and display luminance unevenness incidental to the influence are removed.