Electric lamp and discharge devices – Cathode ray tube – Plural beam generating or control
Reexamination Certificate
2005-05-03
2005-05-03
Patel, Vip (Department: 2879)
Electric lamp and discharge devices
Cathode ray tube
Plural beam generating or control
C313S412000, C315S015000
Reexamination Certificate
active
06888299
ABSTRACT:
An electron gun for a cathode ray tube and a cathode ray tube using such electron gun is provided. The electron gun includes a cathode for emitting an electron beam; a plurality of grid electrodes aligned sequentially from the cathode, one of the grid electrodes including a plurality of focusing electrodes that are mounted with a predetermined gap therebetween; a support for fixing the grid electrodes in their aligned arrangement; and a shield electrode mounted covering the gap(s) of the focusing electrodes and extending a predetermined distance over the focusing electrodes. The cathode ray tube includes the electron gun; a neck, within which the electron gun is mounted; and a scanning velocity modulation coil mounted on an outer circumference of the neck corresponding to the positioning of the gap(s) of the focusing electrodes.
REFERENCES:
patent: 4686420 (1987-08-01), Kamohara
patent: 5077498 (1991-12-01), Odenthal
patent: 6617777 (2003-09-01), Taguchi et al.
patent: 55-146847 (1980-11-01), None
patent: 8-115684 (1996-05-01), None
patent: 11-162372 (1999-06-01), None
patent: 2003031154 (2003-01-01), None
Hwang Se Ja Chul
Jung Bong-Wook
Park Duk-Sung
Won Yeong-Guon
Christie Parker & Hale LLP
Guharay Karabi
Patel Vip
Samsung SDI & Co., Ltd.
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