Electric lamp and discharge devices – Cathode ray tube – Shadow mask – support or shield
Reexamination Certificate
2005-07-19
2005-07-19
Patel, Nimeshkumar D. (Department: 2879)
Electric lamp and discharge devices
Cathode ray tube
Shadow mask, support or shield
C313S408000
Reexamination Certificate
active
06919673
ABSTRACT:
A shadow mask is arranged to face a phosphor screen formed on an inner surface of a panel. A plurality of aperture columns are formed in parallel in the shadow mask. Each aperture column includes a plurality of apertures arranged in line at a predetermined interval. On both sides of each aperture column on the surface of the shadow mask facing the electron gun, stripe-shaped dielectric layers for acting on electron beams toward the apertures are formed respectively, and extend in substantial parallel with the aperture columns. The shadow mask is manufactured in such a manner that stripe-shaped insulating material layers are formed on the surface of a mask base material facing the electron gun, the mask base material is thereafter shaped into a predetermined shape, and the insulating material layers on the shaped mask are sintered.
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Fukuda Kumio
Inoue Masatsugu
Ishikawa Satoshi
Nakamura Akiyoshi
Nikaido Masaru
Colón German
Kabushiki Kaisha Toshiba
Patel Nimeshkumar D.
Pillsbury Winthrop Shaw & Pittman LLP
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