Electric lamp and discharge devices – Cathode ray tube – Shadow mask – support or shield
Patent
1996-07-23
1998-09-01
Patel, Ashok
Electric lamp and discharge devices
Cathode ray tube
Shadow mask, support or shield
313407, 445 30, 445 37, H01J 2906
Patent
active
058014799
ABSTRACT:
A cathode-ray tube consuppress deterioration and reduce unevenness in color of a picture by preventing an electrode element thereof from being twisted. The color cathode-ray tube includes a frame and an aperture grill stretched across and fixed on the frame and having an electrode element. The aperture grill is stretched across and fixed on the frame in a state that the frame is applied with a compressive force and the aperture grill is applied with a tension. In a process of stretching and fixing the aperture grill across and on the frame, of the tension applied to the aperture grill, a maximum tension applied to the electrode element is set within the range from 30% to 85% of a tensile strength of the electrode element.
REFERENCES:
patent: 4495437 (1985-01-01), Kume et al.
patent: 5382871 (1995-01-01), Funahashi et al.
patent: 5406168 (1995-04-01), Takagi
patent: 5416380 (1995-05-01), Horiuchi
patent: 5550428 (1996-08-01), Kume et al.
Kananen Ronald P.
Patel Ashok
Sony Corporation
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