Patent ID: 9625784
Date: 2017-04-18
CPC Classifications: B82Y,G02B,G02F,G09G

Claim:
1. A method, comprising: acquiring information sensed by using at least one sensing unit; generating a voltage signal based on the acquired information; variably tuning color and a transmittance of a display region of an object based on the generated voltage signal, wherein, in the display region, a solution, which comprises a solvent and a plurality of particles dispersed in the solvent, is provided between two or more electrodes in which one of the electrodes is transparent, and the solution shows a variable electrical polarization characteristic, in which an induced electrical polarization quantity is changed according to a change in electric field; variably tuning the color of the display region of the object by changing a distance between each particle of the plurality of particles to the substantially same extent such that the particles are evenly separated each other to the same extent so as to change a wavelength of light reflected from the particles; and variably tuning the transmittance of the display region of the object by applying the electric field only to the specific portion of the electrode to move the particles to the specific portion of the electrode, wherein the color and the transmittance of the display region of the object is variably tuned by applying electric field corresponding to the voltage signal between the electrodes to which the solution is provided, and tuning at least one of the intensity and direction of the electric field to control the distance between each particle of the plurality of particles and to control the location of the plurality of particles, wherein the particles have an electric charge of the same sign, and as the electric field is applied, the distance between each particle of the plurality of particles reach a specific range by an interaction of electrophoretic force that is applied to the particles in proportional to the intensity of electric field, electrostatic attraction that is applied between the particles by the variable electric polarization characteristic and electrostatic repulsion that is applied between the particles having the electric charge of the same sign, and thus, as the distance between each particle of the plurality of particles reach the specific range, light having a specific wavelength is reflected from the plurality of particles, wherein the plurality of particles show a steric effect, and as the electric field is applied, the distance between each particle of the plurality of particles reach the specific range by an interaction of the electrostatic attraction that is applied between the particles by the variable electric polarization characteristic and the steric hindrance repulsion, and thus, as the distance between each particle of the plurality of particles reach the specific range, light having a specific wavelength is reflected from the plurality of particles, wherein when the electric field is applied, the particles are arranged three-dimensionally with having short range ordering within the solvent, and wherein a first polarization region is formed to include a first particle of the plurality of particles and solvent within a region that is affected by an electrical attraction by an electric charge of the first particle, and a second polarization region is formed to include a second particle of the plurality of particles and solvent within a region that is affected by an electrical attraction by an electric charge of the second particle, wherein each of the first polarization region and the second polarization region acts like one large electrically polarized particle and interacts with one another.