METHOD, FILM AND DEVICE FOR DISPLAYING BY USING MAGNETIC PARTICLES

摘要

PURPOSE: A display method using magnetic particles, a film and a display device are provided to partially write or erase information using a magnetic field application device such as a magnet pen. CONSTITUTION: A plurality of magnetic particles in a display device is arranged in the direction parallel to a first magnetic field using a first magnetic field application unit(230). The particles form a particle chain(210) by arrangement. The particles are magnetized by the first magnetic field. Some part of the particles is moved to the direction close to a display surface of a second magnetic field application area for displaying a predetermined color.