Color cathode ray tube correcting beam landing errors

Details Color cathode ray tube correcting beam landing errors Color cathode ray tube correcting beam landing errors

2007-03-06

2007-03-06

Roy, Sikha (Department: 2879)

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

C313S402000, C313S404000, C313S408000

Reexamination Certificate

active

10852189

ABSTRACT:
A cathode ray tube includes a shadow mask having a faceplate portion and a skirt portion. The faceplate portion includes an apertured portion. A frame is provided having a supporting portion and a bottom portion that extends by width Da from the short side of the supporting portion. Da satisfies the relation Da<Ha×La/P+Na, where La represents a distance between a center point of the faceplate portion and a short side of the apertured portion, Na represents a distance between the short side of the apertured portion and a short side of the border of the faceplate portion, P represents a distance between the electron beams deflection center and the center point of the faceplate portion, and Ha represents a distance between the short side of the border of the faceplate portion and a short side of a rear end line of the supporting portion.

REFERENCES:
patent: 6630776 (2003-10-01), Nakayama et al.
patent: 7012357 (2006-03-01), Kim
patent: 2002/0038995 (2002-04-01), Fukao

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