Electron gun with quadrupole electrode structure

Details Electron gun with quadrupole electrode structure Electron gun with quadrupole electrode structure

1997-04-24

1998-09-29

O'Shea, Sandra L.

Electric lamp and discharge devices

Cathode ray tube

Plural beam generating or control

313460, 313428, 3153821, H01J 2946

Patent

active

058149295

ABSTRACT:
An in-line electron gun for a color CRT includes a static electrode (39') applied with a static voltage, and a dynamic electrode (40') applied with a dynamic voltage. A side of the static electrode (39') facing toward the dynamic electrode (40') is formed with a common opening for the electron beams, and a plain electrode (21) having three apertures (20) is positioned inside the static electrode (39'). The dynamic electrode (40') has a pair of lens reinforcement partitions (38) having round horizontal partitions (41) disposed in a vicinity of the apertures (20) and has a curvature similar to that of the apertures (20), and linear partitions (42) formed integral with the round partitions (41) to provide a static facing side of the dynamic electrode (40') with a quadrupole effect. The in-line electron gun reduces the voltage difference of the peak-to-peak voltage of the dynamic voltage reducing the production cost of the dynamic voltage supply.

REFERENCES:
patent: Re34339 (1993-08-01), Ogakabe
patent: 4737682 (1988-04-01), Alig et al.
patent: 4886999 (1989-12-01), Yamane et al.
patent: 4887009 (1989-12-01), Bloom et al.
patent: 5142190 (1992-08-01), Koh
patent: 5162695 (1992-11-01), Shimona et al.
patent: 5325013 (1994-06-01), Johnson et al.
patent: 5532547 (1996-07-01), Park et al.

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