Color cathode ray tube

Details Color cathode ray tube Color cathode ray tube

1996-12-30

1998-08-11

Patel, Nimeshkumar

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

313402, 313408, H01J 2981

Patent

active

057931569

ABSTRACT:
A color cathode ray tube in which the structure of a shadowmask frame assembly is improved. The color cathode ray tube includes a panel, a funnel sealingly coupled to the panel, an electron gun installed in a neck portion of the funnel, a deflection yoke installed around a conical portion of the funnel, a shadowmask frame assembly including a shadowmask in which a multiplicity of electron beam passing holes are formed and a frame installed at an inner edge of the panel for supporting the shadowmask, and a heater for thermally expanding the frame in the same direction as the thermal expansion direction of the shadowmask. According to the color cathode ray tube, it is possible to stabilize an initial screen.

REFERENCES:
patent: 5594300 (1997-01-01), Nosker et al.

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