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Quantum dot film and preparation method thereof

A quantum dot film and quantum dot technology are applied in the field of quantum dot film and its preparation to achieve the effects of reducing processes, reducing energy consumption and improving production efficiency

Inactive Publication Date: 2017-06-20
WUHAN BAOLI LIANGCAI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a quantum dot film and its preparation method. The first thing to solve is the problem of stable dispersion of quantum dot materials in a photocurable glue system with 100% solid content

Method used

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  • Quantum dot film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1 A light-curable glue was formulated from 50g of isobornyl acrylate, 36g of aliphatic urethane acrylate, and 3.2g of photoinitiator 1173, with a refractive index of 1.52 and a viscosity of about 1000cPs. Take a quantum dot product containing 0.08 g of quantum dots, remove the organic solvent by rotary evaporation, then add 0.72 g of isobornyl acrylate, stir first and then ultrasonically disperse to obtain a quantum dot concentrate. Add the quantum dot concentrate and 10 g of light diffusing agent into the light-curable glue, stir first and then ultrasonically disperse to obtain the quantum dot light-curable glue material. Coat the above-mentioned quantum dot light-curable glue material on the PET base film to form a quantum dot layer, then place another PET base film on the quantum layer by rolling method, and irradiate with LED UV light source to cure the quantum dot layer , to obtain the quantum dot film, wherein the thickness of the quantum dot layer after c...

Embodiment 2

[0033] Example 2 A photocurable glue was prepared from 60g of lauryl methacrylate, 26g of aliphatic urethane acrylate, and 3.2g of photoinitiator 1173, with a refractive index of 1.50 and a viscosity of about 700cPs. Take a quantum dot product containing 0.08 g of quantum dots, remove the organic solvent by rotary evaporation, then add 0.72 g of lauryl methacrylate, stir first and then ultrasonically disperse to obtain a quantum dot concentrate. Add the quantum dot concentrate and 10 g of light diffusing agent into the light-curable glue, stir first and then ultrasonically disperse to obtain the quantum dot light-curable glue material. Coat the above-mentioned quantum dot light-curable glue material on the PET base film to form a quantum dot layer, then place another PET base film on the quantum layer by rolling method, and irradiate with LED UV light source to cure the quantum dot layer , to obtain the quantum dot film, wherein the thickness of the quantum dot layer after cur...

Embodiment 3

[0034] Example 3 A photocurable glue was prepared from 60g of isobornyl acrylate, 26g of epoxy acrylate, and 3.2g of photoinitiator 184, with a refractive index of 1.50 and a viscosity of about 800cPs. Take a quantum dot product containing 0.08 g of quantum dots, remove the organic solvent by rotary evaporation, then add 0.72 g of isobornyl acrylate, stir first and then ultrasonically disperse to obtain a quantum dot concentrate. Add the quantum dot concentrate and 10 g of light diffusing agent into the light-curable glue, stir first and then ultrasonically disperse to obtain the quantum dot light-curable glue material. Coat the above-mentioned quantum dot light-curable glue material on the PET base film to form a quantum dot layer, then place another PET base film on the quantum layer by rolling method, and irradiate with LED UV light source to cure the quantum dot layer , to obtain the quantum dot film, wherein the thickness of the quantum dot layer after curing is 40 μm.

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B7/12B32B27/06B32B27/36B32B37/02B32B38/16
CPCB32B27/06B32B7/12B32B27/36B32B37/02B32B38/164C09J11/04C09J163/10C09J175/14
Inventor 向爱双李沛丁玲刘浩李循向正涛
Owner WUHAN BAOLI LIANGCAI TECH CO LTD
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