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Quantum dot optical film of multi-layer structure, and preparation method and application thereof

A technology of quantum dot film and quantum dot layer, which is applied in optics, optical components, nonlinear optics, etc., and can solve problems such as the reduction of quantum dot luminous efficiency

Inactive Publication Date: 2018-02-02
WUHAN BAOLI LIANGCAI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This secondary absorption and excitation of light leads to a decrease in the overall luminous efficiency of the quantum dots

Method used

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  • Quantum dot optical film of multi-layer structure, and preparation method and application thereof
  • Quantum dot optical film of multi-layer structure, and preparation method and application thereof
  • Quantum dot optical film of multi-layer structure, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Multilayer structure quantum dot film with PET separation layer

[0033] 2 parts of light-diffusing particles (diffusion powder EL202, purchased from Yongqi Materials, the same as the light-diffusing particles in the examples and comparative examples described later) were dispersed into 20 parts of polymerization containing acrylic resin, epoxy resin and photoinitiator In the material (UV adhesive BTW-504-33, purchased from Betley, the polymer material in the following examples and comparative examples is the same), the disperser (Dragon Lab OS20-S) rotating speed is 1800rpm, The diameter of the turntable is 30mm, and the dispersion time is 10min. Repeat the above steps to obtain another part of the same mixture. Then, in the obtained mixture respectively, add 1.5 parts of green quantum dot mixed solution (provided by Tianjin Nanocomy, peak position 520nm) and 0.5 part of red quantum dot mixed solution (provided by Tianjin Nanocomy, peak position 625nm), respectively mi...

Embodiment 2

[0049] Multilayer structure quantum dot film with low refractive index spacer layer (air medium)

[0050] Disperse 2 parts of light-diffusing particles into 20 parts of polymer materials containing acrylic resin, epoxy resin and photoinitiator, the speed of the disperser (Dragon Lab OS20-s) is 1800rpm, the diameter of the turntable is 30mm, and the dispersion time is 10min. Repeat the above Step to obtain another portion of the same mixture. Then, to the respective obtained mixtures, add 1.5 parts of green quantum dot mixed solution (provided by Tianjin Nanocomy, peak position 520nm) and 0.5 part of red quantum dot mixed solution (provided by Tianjin Nanocomy, peak position 625nm), respectively mix to form green And red quantum dot UV curing glue. The two kinds of glue were respectively coated on a 75 μm thick PET base film, and after laminating another 75 μm thick PET base film, they were cured under 365 nm UV light to obtain two single-layer quantum dot films. In this embo...

Embodiment 3

[0054] Multilayer structure quantum dot film with dichroic mirror

[0055] A multilayer quantum dot film with red and green quantum dot layers separated by a dichroic mirror capable of 100% reflecting green light in a certain incident direction. The incident angle of the dichroic mirror used in this embodiment is 45°, the thickness is 6.5 mm, and the diameter is 30 mm. Since the dichroic mirror used is relatively thick and small, it is impossible to directly coat the film on its surface. We first made a single-layer green or red quantum dot film to carry out this experiment. Disperse 1 part of light-diffusing particles into 20 parts of polymer materials containing acrylic resin, epoxy resin and photoinitiator, the speed of the disperser (Dragon Lab OS20-S) is 1200rpm, the diameter of the turntable is 30mm, and the dispersion time is 10min. Repeat the above steps Obtain another portion of the same mixture. Then, add 1.0 parts of green quantum dot mixed solution (provided by T...

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Abstract

The invention relates to a quantum dot optical film of a multi-layer structure. The quantum dot optical film comprises one or more green quantum dot layers, one or more red quantum dot layers, and separating layers or dichroic mirrors, wherein the green quantum dot layers and the red quantum dot layers are alternatively arranged, and the separating layers or dichroic mirrors are arranged between the green quantum dot layers and the red quantum dot layers. The invention further relates to a preparation method and application of the quantum dot optical film.

Description

technical field [0001] The invention relates to the fields of light emission and light diffusion, in particular to a quantum dot film with a multilayer structure, which is used as a light diffusion film and a high-end fluorescent material for illumination and display. Background technique [0002] Liquid crystal displays are used in personal computers, televisions, monitors, cell phones, personal digital assistants, game consoles, e-readers, digital cameras, and similar products. Traditionally, the backlight module is combined with a liquid crystal unit to convert white light into the desired color light. 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 multi-layer quantum dot film of the present invention is sandwiched into the ba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/02G02F1/13357
CPCG02B5/0205G02F1/133606
Inventor 向爱双李沛
Owner WUHAN BAOLI LIANGCAI TECH CO LTD
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