Cathode-ray tube employing a separate grid structure to...

Details Cathode-ray tube employing a separate grid structure to... Cathode-ray tube employing a separate grid structure to...

2006-08-08

2006-08-08

Patel, Ashok (Department: 2879)

Electric lamp and discharge devices

Cathode ray tube

Ray generating or control

C313S412000, C313S417000, C313S456000

Reexamination Certificate

active

07088034

ABSTRACT:
An electron gun assembly that emits three electron beams, which are arranged in line, toward a phosphor screen includes three cathodes arranged in line, three first grids arranged to face the associated cathodes, and a second grid with an integral structure that is disposed to face a phosphor screen side of the first grids. Each of the first grids is formed of a cup-shaped electrode body having an electron beam passage hole. The electron gun assembly further includes an insulation member through which the three first grids penetrate, the insulation member thus integrally holding the three first grids, a cylindrical member that surrounds the insulation member and has an implant part, and an insulating support member that supports the implant part of the cylindrical member.

REFERENCES:
patent: 5637952 (1997-06-01), Tischer
patent: 2002-110056 (2002-04-01), None
patent: 2002-184320 (2002-06-01), None
T. Shiroishi, et al. “Development of Electron Gun for High Brightness CRT”; IDW '02; Dec. 4, 2002; p. 611.

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