| 摘要 |
PURPOSE: A display method and a device thereof are provided to variably display a logo of a product or a trademark using a color changeable material or a light transmittance changeable material. CONSTITUTION: A display device comprises a first part including a color variable material for changing colors by the magnetic field direction or the intensity and a second part formed including some part of a magnetic field generating area. If the magnetic field generating area is approached to the color variable area by combining the first part and the second part, the magnetic field is applied to the color variable area and controls the color of the color variable area. |
