Electric lamp and discharge devices – Cathode ray tube – Plural beam generating or control
Reexamination Certificate
2005-10-04
2005-10-04
Patel, Nimeshkumar D. (Department: 2879)
Electric lamp and discharge devices
Cathode ray tube
Plural beam generating or control
C313S412000, C313S413000, C313S421000, C313S417000, C313S449000, C313S456000, C315S015000
Reexamination Certificate
active
06952077
ABSTRACT:
An electron gun for a cathode ray tube includes a cathode for radiating electron beams, a scanning velocity modulation coil for synchronizing the electron beams with an image signal, a focus electrode having first and second sub-electrodes disposed with a gap through which a magnetic field generated by the scanning velocity modulation coil passes, a plurality of grid electrodes with the focus electrode for controlling the electron beams radiated from the cathode, a support for aligning and supporting the grid electrodes, and a shield electrode electrically connected to the first and second sub-electrodes to protect against infiltration of an outer electric field. The shield electrode includes plural intermediate electrodes disposed in the gap between the first and second sub-electrodes, and electrical connecting unit for electrically connecting the intermediate electrodes to the first and second sub-electrodes. The intermediate electrodes are spaced away from each other.
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Hwang Se-Ja-Chul
Jung Bong-Wook
Park Duk-Sung
Won Yeong-Guon
Bushnell , Esq. Robert E.
Patel Nimeshkumar D.
Roy Sikha
Samsung SDI & Co., Ltd.
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