Electric lamp and discharge devices – Cathode ray tube – Shadow mask – support or shield
Patent
1996-04-30
1998-06-09
Dombroske, George M.
Electric lamp and discharge devices
Cathode ray tube
Shadow mask, support or shield
313326, 313352, H01J 2906
Patent
active
057639906
ABSTRACT:
An assembly of mask frame and inner shield for color cathode-ray tubes is disclosed, including a mask frame which is attached toward a panel so as to improve initial doming characteristics, decrease correction capacity of the spring, and prevent unbalanced magnetic field induction to the inside. An inner shield which is attached in opposition to the mask frame and protects electron beams from the earth's magnetic field, a mask frame assembly which contains the mask frame, and the inner shield. The mask frame has a band type with only side and a plate for preventing random reflection provided in the side of the inner shield. The plate for preventing random reflection is formed in a single body together with the inner shield. The inner shield is assembled inside or outside of the mask frame. The plate for preventing random reflection is extended from the inner shield to the inside at the front end or rear end of the mask frame.
REFERENCES:
patent: 3376451 (1968-04-01), Mears
patent: 4678963 (1987-07-01), Fonda
patent: 4694216 (1987-09-01), Morrell
patent: 5103132 (1992-04-01), Van Der Bolt et al.
Dombroske George M.
Patel Harshad
Samsung Display Devices Co. Ltd.
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