Electrically-controllable color filter array based on phase-change material, and artificial vision system

An electrically-controllable color filter array based on a phase-change material, comprising a plurality of color filter units arranged in an array along a first direction and a second direction intersecting each other, each of the color filter units comprises a substrate layer, a first metal layer, a bottom transparent conductive layer, a chalcogenide phase-change material layer, and a top transparent conductive layer arranged from bottom to top, red, green and blue filter functions of each of the color filter units are adjusted according to thickness of the bottom transparent conductive layer and thickness of the top transparent conductive layer,

• in the color filter units arranged in the array, the top transparent conductive layers in each row of the color filter units are connected to a bit line BL, and the bottom transparent conductive layers in each column of the color filter units are connected to a word line WL, a phase transition of the chalcogenide phase-change material layer in each of the color filter units is realized by adjusting a width and voltage amplitude of electrical pulses applied to the bit line BL and the word line WL, states of the chalcogenide phase-change material layer comprise a high-resistance state and a low-resistance state, and the state transition of the chalcogenide phase-change material layer is adjusted to implement data storage.