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US 6,414,424 B1Granted
Electron gun, color cathode ray tube, and display apparatus using same
AssigneeSony Corporation
InventorYasunobu Amano
Life of this patent
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AssigneeSony Corporation
InventorYasunobu Amano
Estimating the term…
In an inline type electron gun incorporated in a color cathode ray tube, a plurality of electron beams are produced from each of cathodes. A plurality of beam apertures are formed, per cathode, in a first grid and a second grid of the electron gun. The second grid consists of a plurality of split grids spaced apart from each other in the traveling direction of electron beams. The beam apertures formed in at least one of the split grids constituting the second grid are positionally eccentric to the beam apertures formed in another split grid. A voltage of a waveform synchronized with a deflection period is impressed from a circuit in a display apparatus to at least one of the split grids constituting the second grid. And the electron lens effect of the second grid is changed in accordance with the impressed voltage waveform, thereby correcting the positional deviation of the plural electron beams caused in the peripheral area of a fluorescent screen.
An inline type electron gun comprising:
A color cathode ray tube having an inline type electron gun which comprises three cathodes, a first grid adjacent to said cathodes, and a second grid adjacent to said first grid;
A display apparatus equipped with the color cathode ray tube, said cathode ray tube having an inline type electron gun which comprises three cathodes, a first grid adjacent to said cathodes, and a second grid adjacent to said first grid;
Dependencies are inferred from the claim text.