Projection type cathode ray tube device

Details Projection type cathode ray tube device Projection type cathode ray tube device

2006-03-21

2006-03-21

Guharay, Karabi (Department: 2879)

Electric lamp and discharge devices

Cathode ray tube

Ray generating or control

C313S431000

Reexamination Certificate

active

07015634

ABSTRACT:
A pair of magnets of which magnetizing direction differs from each other in the horizontal direction (X axis) are arranged at upper and lower portions of a funnel-side opening portion of a deflection yoke. The pair of magnets are held and fixed to a coil support body which supports horizontal deflection coils in a state where the magnets are embedded in the coil support body. In a projection type cathode ray tube of a single electron beam method, a locus of an electric beam which receives the deflection distortion is corrected so as to correct an electron beam shape on a screen to an approximately circular shape whereby a focusing performance of a display image on a screen is enhanced.

REFERENCES:
patent: 4939415 (1990-07-01), Iwasaki et al.
patent: 5378961 (1995-01-01), Shiro et al.
patent: 6373202 (2002-04-01), Ito et al.
patent: 6750602 (2004-06-01), Hirota et al.
patent: 2003/0173889 (2003-09-01), Tagami et al.
patent: 7-37526 (1995-02-01), None
patent: 8-287845 (1996-11-01), None
patent: 2001-185053 (2001-07-01), None
Patent Abstracts of Japan; Publication No. 08-287845, Jan. 11, 1996, Projection Cathode-Ray Tube Device.

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