The New Chassis and Auto-degauss Coil of a CRT Display Monitor

Abstract

High resolution and brightness are required for CRT display monitors. A ferro-magnetic metal chassis is generally used as an external magnetic shield against fields. To obtain the shielding effect, the inner magnetic shield (IMS) is demagnetized by an auto-degauss coil (ADG coil). The influences of steel chassis and ADG coils are studied using magnetic field analysis. A new chassis and auto-degauss coil for a CRT display monitor have been developed using computer-aided design. The mislanding by the geomagnetic field is reduced.