Double-face display device and preparation method thereof

Abstract

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.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a double-sided display device and a preparation method of the double-sided display device. Background technique [0002] Quantum dots (Quantum Dot, abbreviated as QD), also known as nanocrystals, are nanoparticles composed of II-VI or III-V elements, such as CdSe, CdS, CdTe, ZnSe, ZnTe, ZnS and HgTe Such as II-VI semiconductor compounds or III-V semiconductor compounds such as InAs and InP. The particle size of quantum dots is generally between 1nm and 10nm. Since electrons and holes are quantum-confined, the continuous energy band structure becomes a discrete energy level structure with molecular characteristics, which can emit fluorescence after being excited. Moreover, the emission spectrum of the quantum dot can be controlled by changing the size of the quantum dot, and the emission spectrum of the quantum dot can cover the entire visible light region by changing the size o...

AI Technical Summary

Problems solved by technology

However, using the existing layered manufacturing process of quantum dot light-emitting diode display devices to prepare double-sided display devices, usually a transparent anode, a hole transport layer, a quantum luminescent layer, an electron transport layer, a reflective cathode or more layers are prepared sequentially. , requires more process steps, the preparation efficiency is low, and the yield of the produced product is also low, which increases the production cost

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