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Preparation method and processing equipment of ultrathin quantum dot film

A quantum dot film and processing equipment technology, applied in the direction of film/sheet adhesives, chemical instruments and methods, film/sheet without carrier, etc., can solve the problem of poor uniformity of optical properties, large fluctuation of finished product thickness, and occurrence of wrinkles Eliminate problems such as pleats, and achieve the effects of simple operation, stable mass production, and reduced impact

Active Publication Date: 2020-10-20
NANJING BREADY ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] There are some disadvantages in the production and preparation of the traditional quantum dot film, including if the simple barrier film is too thin, it will wrinkle during the drawing process and curing, the thickness of the finished product will fluctuate greatly, the uniformity of optical properties is poor, and when the simple barrier film is thin and solidified, it will wrinkle. The heat of UV energy can easily cause product warping

Method used

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  • Preparation method and processing equipment of ultrathin quantum dot film
  • Preparation method and processing equipment of ultrathin quantum dot film
  • Preparation method and processing equipment of ultrathin quantum dot film

Examples

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Effect test

preparation example Construction

[0041] A method for preparing an ultra-thin quantum dot film, comprising the following steps: 1) selecting quantum dots 105 according to the performance requirements of the ultra-thin quantum dot film to be prepared and dissolving them in a quantum dot stabilizer to obtain a quantum dot solution; The solution is uniformly mixed with the matrix resin 107, the scattering particles 106, the photoinitiator and the diluent to obtain the quantum dot glue; 2) The quantum dot glue is coated on the first barrier film 102 and the second barrier film 103 using a roll-to-roll process In between, the first barrier film 102 is bonded to the second barrier film 103 through the quantum dot glue layer, and the first quantum dot film is obtained after coating by the roll-to-roll process; the first barrier film 102 in the first quantum dot film and the sides away from each other on the second barrier film 103 are respectively attached with a protective film 101; 3) in the first quantum dot film, ...

Embodiment 1

[0055] (1) Preparation of quantum dot glue

[0056] Green and red CdSe quantum dots with an average particle size of 3 nm and 7 nm dissolved in n-hexane with a mass fraction of 1.5% were mixed with a matrix resin acrylic resin and scattering particles TiO 2 , photoinitiator 819 and diluent acetic acid are mixed; after vacuum deoxygenation and nitrogen protection, after stirring at a speed of 50-300rpm for 1-3 hours, the quantum dot glue liquid is obtained;

[0057] (2) Preparation of ultra-thin quantum dot film

[0058] The first barrier film 102 and the second barrier film 103 with the protective film 101 attached to one side are respectively unwound by the first unwinding shaft 201 and the second unwinding shaft 202, wherein the thickness of the protective film is 75 μm, the first barrier film and The thickness of the second barrier film layer is 25 μm; under the traction of the tractor, the prepared quantum dot glue solution is passed through the upper metering roller 211 ...

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Abstract

The invention provides a preparation method and processing equipment of an ultrathin quantum dot film, and relates to the technical field of liquid crystal display. In the preparation process, from the period when unreeling is started to the period when a quantum dot glue solution is coated, cured, and moulded between two barrier films, the lateral surfaces, away from each other, of two barrier films are always attached with release protective films; when the quantum dot glue solution is cured and reeled, the release protective films are gradually peeled-off from two barrier films through a peeling-off roller set so as to obtain the ultrathin quantum dot film, which comprises the quantum dot glue solution layer and two barrier film layers on the external sides of the quantum dot glue solution layer. The preparation method and processing equipment solve the problem that the quantum dot film wrinkles and warps during the traction and curing process due to the face that the film is too thin; the uniformity of the thickness and optical performance of the film is guaranteed, moreover, the operation is simple, and stable and massive production of the ultrathin quantum dot film can be realized without complicated operation.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a preparation method and processing equipment of an ultra-thin quantum dot film. Background technique [0002] Quantum dots (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. [0003] At present, the most extensive and profound application field of quantum dots is in the field of optics. The quantum dot film made by mixing quantum dots and light-curable glue to form a film can be applied to liquid crystal displays (Liquid Crystal Display), which can increase the NTSC color gamut to 110% and above, while the current NTSC co...

Claims

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Application Information

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IPC IPC(8): C09J7/30C09J133/04C09J7/10C09J11/04C09K11/02C09K11/88G02F1/13357
CPCC08K2003/2241C09J11/04C09J133/04C09J2203/318C09J2433/00C09K11/025C09K11/883C09J7/10C09J7/30G02F1/133606C08K3/22C08K3/30
Inventor 齐永高刘勇张光磊张飞鹏
Owner NANJING BREADY ELECTRONICS CO LTD
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