Edge-closed quantum dot enhanced film and preparation method thereof

Abstract

The invention discloses an edge-closed quantum dot enhanced film. The quantum dot enhanced film has a multi-layer structure, and comprises two outer base films, two inner barrier layers and a middle quantum dot layer, wherein the two inner barrier layers are located on the outer sides of the middle quantum dot layer, the two outer base films are located on the outer sides of the two inner barrierlayers, the thickness of each outer base film is 50-125 [mu]m, the thickness of each inner barrier layer is 0.001-0.5 [mu]m, and the thickness of the middle quantum dot layer is 50-150 [mu]m; the quantum dot layer is composed of matrix resin, quantum dots, a quantum dot stabilizer, scattering particles, an initiator and a diluent. The invention also discloses a preparation method of the edge-closed quantum dot enhanced film. The method is easy to operate, and avoids the need of time-consuming and labor-consuming coating on a specific area, and only a step of immersing a whole quantum dot filmis needed. In addition, the method can be used for coating a plurality of layers of ultrathin films with the minimum thickness of 20 nm, and the optical performance of the product is hardly influenced.

Description

technical field [0001] The invention relates to an edge-closed quantum dot enhanced film. [0002] The invention also relates to a method for preparing an edge-closed quantum dot reinforced film. [0003] The invention also relates to a preparation method of the slurry of the quantum dot film, in particular to a preparation method of the slurry suitable for making the quantum dot film by the slit coating method. . Background technique [0004] Quantum Dots (QDs) are semiconductor nanoparticles with a size between 1-10nm. Due to their small physical structure, they can bind conductive particles, holes and excitons in three directions. So it has a quantum effect. Due to its structure, quantum dots can be used in many fields, such as light-emitting devices, solar cells, bioluminescent labels, etc., and have broad application prospects. [0005] At present, the most extensive and profound application field of quantum dots is in the field of optics. The quantum dot film made...

AI Technical Summary

Problems solved by technology

During the process of forming and cutting the coil, the edge part is exposed to air and water vapor. After a long time of exposure, the air and moisture will penetrate into the inner layer of the quantum dot film and chemically interact with the quantum dots, making the quantum dots fluorescent The yield is reduced, causing the quantum dots to lose their original color, causing the edge of the quantum dot film to turn white and lose its original orange-yellow color

[0007] At present, some patents have begun to reduce the edge effect of quantum dot films by sealing the edges (Chinese patent CN 104501043 A, Chinese patent CN 106189826 A), but the above-mentioned edge-closed quantum dot films have some disadvantages: (1) In the quantum dot film Coating the adhesive layer on the edge of the film will greatly reduce the production efficiency; (2) the area where the adhesive layer is difficult to apply, such as the positioning hole of the membrane, will not be able to improve the effect; (3) the method of curing the liquid microcapsule at the edge means that There are liquid microcapsules in the whole quantum dot membrane. To ensure that the glue is cured but the liquid microcapsules are not cured, the curing and forming method is relatively difficult; (4) The liquid microcapsules will affect the optical and mechanical properties of the quantum dot film , it is difficult to ensure that the quantum dot film will not deform under the action of external force

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