| 摘要 |
The present invention relates to a method for changing a color or a light transmittance of a surface part of a target along one side. The surface part of the target includes a solvent and a plurality of particles dispersed within the solvent. The gaps among the particles or the positions of a plurality of particles are changed when the electric field is applied to the solvent and a plurality of particles. The color or the light transmittance of the surface part of the target is changed according to the strength, direction, applied time or applied number of the electric field. The strength, direction, applied time or applied number of the electric field are changed in association with an input signal through a user using the target, a signal obtained through the target or a signal obtained through a sensing means provided to the target. |
