Electron gun with improved withstand voltage for color-picture t

Details Electron gun with improved withstand voltage for color-picture t Electron gun with improved withstand voltage for color-picture t

1993-11-01

1996-01-23

Yusko, Donald J.

Electric lamp and discharge devices

Cathode ray tube

Plural beam generating or control

313412, 313460, H01J 2951

Patent

active

054867355

ABSTRACT:
Disclosed is a color cathode ray tube equipped with a main electronic lens section for focusing a plurality of in-line electron beams on a screen section. The main electronic lens section includes a plurality of grids each having electron-beam through holes and securely supported by a plurality of insulating supports. At least one of the grids has a rectangular cup portion with a substantially rectangular cross section for commonly enclosing the plurality of in-line electron beams and a face having electron-beam through holes formed at least at one end and substantially perpendicular to the rectangular cup portion. The ratio of an outside diameter L.sub.H of the substantially rectangular portion in a long-axial direction to an outside length L.sub.S thereof in a short-axial direction, L.sub.H /L.sub.S, is set to 2.5<L.sub.H /L.sub.S <4.4, and the ratio of the outside length L.sub.S to a diameter D.sub.V of the electron-beam through holes in the same short-axial direction, L.sub.S /D.sub.V, is set to 1.0<L.sub.S /D.sub.V <2.1. This design can improve the withstand voltage characteristic and the focusing characteristic of the CRT.

REFERENCES:
patent: 2957106 (1960-10-01), Moodey
patent: 3772554 (1973-11-01), Hughes
patent: 4086513 (1978-04-01), Evans, Jr.
patent: 4887001 (1989-12-01), D'Amato et al.
patent: 4897575 (1990-01-01), Shimoma et al.
patent: 5034652 (1991-07-01), Shimona et al.
Patent Abstracts of Japan, vol. 3, No. 2 (E-83) 13 Jan. 1979 & JP-A-53 129 579 (Matsushita Denki Kogyo K.K.) 11 Nov. 1978 *abstract*.

Affiliated with

Also associated with

Rating

Electron gun with improved withstand voltage for color-picture t does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electron gun with improved withstand voltage for color-picture t, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electron gun with improved withstand voltage for color-picture t will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1506700