| 摘要 |
The present invention relates to: a magnetic field shielding sheet for a digitizer which can minimize an influence on a geomagnetic sensor, shield the electromagnetic field generated from various components of a main body of a portable terminal device when preparing a digitizer function for the portable terminal device, and improve sensitivity of the digitizer as well; and the portable terminal device using the same. The magnetic field shielding sheet of the present invention comprises: a thin magnetic sheet divided into a plurality of fine pieces by flake treatment; a protective film attached to one side of the thin magnetic sheet; and a double-side adhesive tape adhered to the other side of the thin magnetic sheet, wherein the thin magnetic sheet is characterized by treating a heat-treated amorphous ribbon formed with Fe-based amorphous alloy into flakes to increase an demagnetizing field, such that magnetic saturation in earth magnetic field may be prevented. |
