Abstract
An effective method is presented for reducing and reshaping an ambient magnetic field in a CRT. The key to this method is the use of a meander iron sheet arranged around the frame of a CRT. The magnetization characteristics of the meander iron sheet are anisotropic in the X and Z directions. The sheet has the reducing and reshaping effect of the field perpendicular to the screen (Z direction) and reducing the likelihood of mislanding. On the other hand, there is little effect to reduce the field parallel to the screen (in the X direction). Mislanding can be controlled by changing the gap between the frame and the meander iron sheet. The mislanding distance is 47 μm in the perpendicular and parallel fields when the gap is 4.5 mm.
