| US 7,612,494 B2 | ||
| Image display apparatus having accelerating electrode with uneven thickness | ||
| Yasushi Shioya, Kanagawa-ken (Japan) | ||
| Assigned to Canon Kabushiki Kaisha, Tokyo (Japan) | ||
| Filed on Jul. 27, 2005, as Appl. No. 11/189,786. | ||
| Claims priority of application No. 2004-238161 (JP), filed on Aug. 18, 2004. | ||
| Prior Publication US 2006/0038483 A1, Feb. 23, 2006 | ||
| Int. Cl. H01J 1/62 (2006.01); H01J 63/04 (2006.01) | ||
| U.S. Cl. 313—497 [313/495; 313/496] | 5 Claims |
| 1. An image display apparatus comprising:
a face plate having a phosphor and an accelerating electrode laminated on the phosphor; and
a rear plate having an electron-emitting device emitting an electron to a partial region of the phosphor,
wherein the accelerating electrode includes a first metal thin film laminated on the phosphor and a second metal thin film
laminated on a part of the first metal thin film positioned on a non-irradiation region which is not to be subjected to an
irradiation with the electron emitted from the electron-emitting device, so that an average thickness of the accelerating
electrode of the non-irradiation region is larger than an average thickness of the accelerating electrode of an irradiation
region to be subjected to the irradiation with the electron emitted from the electron-emitting device, wherein an average
thickness of a portion comprising the first metal thin film and the second metal thin film that is positioned on the non-irradiation
region of the accelerating electrode is equal to or more than 300 nm, and wherein the irradiation region and the non-irradiation
region are formed in the phosphor.
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