Electricity: electrical systems and devices – Control circuits for electromagnetic devices – Systems for magnetizing – demagnetizing – or controlling the...
Patent
1997-04-03
1998-09-29
Gaffin, Jeffrey A.
Electricity: electrical systems and devices
Control circuits for electromagnetic devices
Systems for magnetizing, demagnetizing, or controlling the...
361149, 361267, H01F 1300
Patent
active
058153616
ABSTRACT:
A magnetic field shielding device of a CRT (cathode ray tube) display includes a degaussing coil for preventing a magnetic field, generated by a voltage supplied to a deflection coil of the display, from being emitted from the display. A tilt coil maybe disposed at the middle portion of the degaussing coil so as to surround an electron gun of the cathode ray tube. The top and bottom portions of the degaussing coil are arranged so as to be horizontal. Both sides of the middle portion of the degaussing coil are bent inward so as to approach to each other, and so as to have a predetermined distance therebetween. The shielding device prevents dark color purity from being generated at the lower portion of the display.
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Bushnell Esq. Robert E.
Gaffin Jeffrey A.
Huynh Kim
Samsung Electronics Co,. Ltd.
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