Liquid crystal display screen, display device and preparation method of single-color quantum dot layers

Abstract

The invention discloses a liquid crystal display screen, a display device and a preparation method of single-color quantum dot layers. A plurality of pixel units are disposed in liquid crystal panel. Each pixel unit is provided with a plurality of sub-pixel units in different colors. The single-color quantum dot layers are disposed at positions corresponding to the sub-pixel units in at least one color. The single-color quantum dot layers are used to replace the existing color resins as color filters so as to convert background light into single-color light. Due to the fact that quantum dots are narrow in emission spectrum and high in light emitting efficiency, the background light can be converted into the single-color light efficiently, color gamut of the liquid crystal display screen can be increased, color saturation can be increased, and display quality of the liquid crystal display screen is increased. In addition, by the polymer network-dispersed single-color quantum dots, quantum dot accumulation can be prevented, quantum yield can be increased to increase quantum inspired light effect, contact of the single-color quantum dots with oxygen can be avoided, and the service lives of the quantum dots are prolonged.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a liquid crystal display screen, a display device and a preparation method of a monochrome quantum dot layer. Background technique [0002] Quantum Dots (QDs), also known as nanocrystals, are nanoparticles composed of II-VI or III-V elements. The particle size of quantum dots is generally between 1 and 20 nm. Since electrons and holes are quantum-confined, the continuous energy band structure becomes a discrete energy level structure with molecular characteristics, and can emit fluorescence after being excited. [0003] The emission spectrum of quantum dots can be controlled by changing the size of quantum dots. By changing the size of the quantum dot and its chemical composition, its emission spectrum can cover the entire visible light region. Taking CdTe quantum dots as an example, when its particle size grows from 2.5nm to 4.0nm, their emission wavelength can ...

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Problems solved by technology

[0005] However, due to the poor dispersion of nano-scale quantum dots in organic solvents, the accumulation of quantum dots will cause quenching when patterning (Pattern) later, which seriously reduces the quantum yield. Therefore, in the prior art, No design that uses quantum dots inside LCD screens

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