The invention relates to the technical field of display, in particular to a double-face
display device and preparation method of the double-face
display device. According to the double-face
display device, firstly, a
quantum luminous layer containing
quantum dot luminous materials is arranged between transparent electrodes and reflecting electrodes, and due to the fact that the
quantum dot luminous materials are relatively narrow in
full width at half maximum of emission peaks and high in luminous purity, the color
gamut and the brightness of the double-face display device are improved, and the double-face display device has high display quality; secondly, through the fact that charge transfer particles are mixed in the quantum luminous layer, the structure of the double-face display device is simplified, steps of a preparation technology are reduced, and production cost is lowered; lastly,
image display in two directions is achieved through one display panel, both the thickness and the weight are not increased compared with a traditional single-face display device, and therefore the double-face display device has the advantages of being more convenient to carry, light in weight, low in price and the like.