Quantum dot film and preparation method thereof

Abstract

The invention relates to a quantum dot film and a preparation method thereof applied to the field of optical display. The quantum dot film comprises a first base film, a quantum dot layer and a second base film, wherein the quantum dot layer is positioned between the first base film and the second base film, and the quantum dot layer comprises photo-curing glue, a quantum dot nano-material dispersed in the photo-curing glue, and a light diffusing agent. The preparation method comprises the following steps: preparing a quantum dot concentrated liquid, preparing a photo-curing glue material, forming the quantum dot layer on the first base film, placing the second base film on the quantum dot layer and forming a film by photo-curing. The quantum dot film and the preparation method thereof provided by the invention have the beneficial effects that the quantum dot nano-material is uniformly and stably dispersed in a photo-curing glue system with 100% solid content, so that the obtained quantum dot film has high quantum luminescence efficiency; the film is formed by photo-curing without heat curing, quantum dots cannot be damaged due to high temperature; on the one hand, the working procedures are reduced, and the production efficiency is improved; on the other hand, the equipment investment and energy consumption are reduced, and the production cost is reduced.

Description

technical field

[0001] The invention relates to the field of quantum dot film preparation, in particular to a quantum dot film and a preparation method thereof. Background technique

[0002] Liquid crystal displays are widely used in personal computers, televisions, monitors, mobile phones, personal digital assistants, gaming devices, electronic reading devices, digital cameras, and the like. Conventional LCD devices are equipped with a backlight unit that together converts the white backlight into the desired target display color. The color light emitted by this traditional light emitting device has limited performance and low luminous efficiency. Therefore, it is very necessary to develop low-cost light-emitting methods and devices to obtain colored light with high purity, high efficiency, and improved performance. The quantum dot film of the present invention is sandwiched into the backlight module unit, and this new type of liquid crystal device has the characteristics...

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