Quantum dot membrane and preparation method thereof

Abstract

The invention provides a quantum dot membrane and a preparation method thereof. The quantum dot film comprises a first quantum dot packaging structure and a second quantum dot packaging structure, wherein the first quantum dot packaging structure comprises packaged red quantum dots and green quantum dots; the second quantum dot packaging structure is arranged on one side of the first quantum dot packaging structure, and the second quantum dot packaging structure comprises a second packaging material and a plurality of quantum dot parts arranged in the second packaging material at intervals; gaps between the quantum dot parts allow light to be directly emitted to the other side from one side of the second quantum dot packaging structure; and each quantum dot part comprises a third packagingmaterial and blue quantum dots dispersed in the third packaging material. The quantum dot parts capable of converting harmful blue light are arranged, so that harmful blue light is reduced, and the harm of blue light is lowered.

Description

technical field [0001] The invention relates to the technical field of quantum dot materials, in particular to a quantum dot film and a preparation method thereof. Background technique [0002] Quantum dots, also known as nanocrystals, are nanoparticles composed of II-VI or III-V elements. Because of the quantum confinement of quantum dots, the continuous energy band structure becomes a domain of separated energy levels with molecular characteristics, which can emit fluorescence after being stimulated by light. The half-peak width of the excitation spectrum of quantum dots is narrow, symmetrical and adjustable, the color of emitted light can be adjusted, the photochemical stability is high, and the fluorescence lifetime is long. Quantum dot materials have a wide range of applications in the fields of optoelectronics and materials. . [0003] At present, the red and green quantum dot film is used to emit red light and green light under the excitation of the blue light backl...

AI Technical Summary

Problems solved by technology

The hazards of blue light are mainly reflected in: (1) Harmful blue light has extremely high energy, which can penetrate the lens directly to the retina and cause the atrophy or even death of retinal pigment epithelial cells; (2) the wavelength of blue light is short, and the focus point falls in front of the retina, making the image unclear , easy to cause eye tension; (3) blue light can inhibit the secretion of melatonin, directly affecting sleep

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