Electric lamp and discharge devices – Cathode ray tube – Shadow mask – support or shield
Patent
1993-01-22
1994-10-11
O'Shea, Sandra L.
Electric lamp and discharge devices
Cathode ray tube
Shadow mask, support or shield
313407, H01J 2906
Patent
active
053550498
ABSTRACT:
The present invention provides the assembly of a shadow mask frame with an inner shield for a color cathode ray tube having a shadow mask frame, an inner shield and a clip for coupling the shadow mask frame with the inner shield, the frame having a rim part and a flange part bent at a nearly right angle to the rim part and extending inwardly, wherein: a sloping face is formed to a predetermined width between the rim part and the flange part of the frame with a predetermined obtuse angle therebetween, and the inner shield includes a fixing part aligned with the sloping face and having the same width as that of the sloping face, a flat part bent at the same angle as the angle between the sloping face and the flange part, and a shield part extending to a predetermined length from the inside edge of the flat part and bent at a predetermined angle with respect to the flange part of the frame, and each slot is formed on the positions of the sloping face of the frame and the fixing part of the inner shield corresponding to each other when the sloping face is aligned with the fixing part, and the clip is inserted into the slots to couple the frame with the inner shield.
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"Design Principles of the RCA Large-Screen 110.degree. Precision In-Line Color Picture Tube"; A. M. Morrell; IEEE Transactions on Consumer Electronics, Feb. 1976.
O'Shea Sandra L.
Samsung Electron Devices Co. Ltd.
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