Mask frame for cathode ray tube

Details Mask frame for cathode ray tube Mask frame for cathode ray tube

2005-04-12

2005-04-12

Williams, Joseph (Department: 2879)

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

C313S402000, C313S408000

Reexamination Certificate

active

06879094

ABSTRACT:
A color cathode ray tube comprising a panel having a substantially flat outer surface, a funnel mounted on a rear side of the panel, a shadow mask including a plurality of electron beam through holes, and a mask frame for supporting the shadow mask, said mask frame satisfying the following condition: d/v≧0.9, d/h≧0.9 wherein d is a height of a center of a diagonal portion of the mask frame, h is a height of a center of a short side portion of the mask frame, and v is a height of a center of a long side portion of the mask frame.

REFERENCES:
patent: 6030268 (2000-02-01), Lee
patent: 6268688 (2001-07-01), Tani et al.
patent: 6635981 (2003-10-01), Tani et al.
patent: 6707242 (2004-03-01), Ito et al.
patent: 11-329279 (1999-11-01), None
patent: 2000-0066352 (2000-11-01), None

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