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Quantum dot film with wide color gamut and preparation method thereof

A quantum dot film and technology of quantum dots, which are applied in the field of quantum dot film with wide color gamut and its preparation, can solve problems such as it is difficult to achieve 100% NTSC, and achieve the effects of high uniformity, uniform distribution and good optical performance.

Active Publication Date: 2017-06-30
NINGBO CHANGYANG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, many wide color gamut technologies can increase the color gamut of display devices to 80-100% NTSC, and it is difficult to achieve more than 100% NTSC

Method used

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  • Quantum dot film with wide color gamut and preparation method thereof
  • Quantum dot film with wide color gamut and preparation method thereof
  • Quantum dot film with wide color gamut and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0060] The preparation method of the quantum dot film that the present invention also provides comprises the following steps:

[0061] (1) preparing an inorganic barrier layer by chemical vapor deposition on the upper surface of the organic barrier layer;

[0062] (2) preparing a protective layer on the lower surface of the organic barrier layer to obtain a pre-composite layer comprising a protective layer and a barrier layer;

[0063] (3) using a structural roller to coat a quantum dot layer with a prism structure on the surface of the inorganic barrier film of the pre-composite layer;

[0064] (4) coating the second quantum dot layer on the quantum dot layer of the prism structure;

[0065] (5) on the surface of the second quantum dot layer, cover a pre-composite layer, so that the surface of the inorganic barrier layer of the pre-compound layer is connected with the surface of the second quantum dot layer;

[0066] (6) By curing, a quantum dot film is obtained.

[0067] ...

Embodiment 1

[0071] The quantum dot film provided by the invention has a symmetrical structure up and down, including a quantum dot layer, upper and lower barrier layers and upper and lower protective layers. The formulations of quantum dot layer and protective layer are shown in Table 1. The thickness of each layer is shown in Table 2. The adhesive of the quantum dot layer is polyester acrylate, the diffusion particles are polymethyl methacrylate particles and silicon dioxide particles, the mass ratio of the two is 6:1, and the particle size of the diffusion particles is 1-15 μm; silica gel particles The particle diameter of the silica gel particle is 10-20 μm, and the pore diameter of the micropore on the silica gel particle is 5-20 nm; the quantum dot particle accounts for 5% of the weight of the silica gel particle; and the photoinitiator adopts methyl o-benzoylbenzoate. The prism apex angle of the quantum dot layer of the prism structure is 90°, and the base of the triangle in the cr...

Embodiment 2

[0077] For the quantum dot film provided in Example 1, the formulations of the quantum dot layer and the protective layer are shown in Table 3. The thickness of each layer is shown in Table 4. The base of the triangle in the cross section of the prism is 75 μm. Quantum dot particles account for 15% of the weight of silica gel particles. The relevant performance test results of the obtained quantum dot film are shown in Table 11.

[0078] The formula of quantum dot layer and protective layer of table 3 embodiment 2

[0079]

[0080] The monolayer thickness of each layer of table 4 embodiment 1

[0081]

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Abstract

The invention relates to quantum dot films and particularly relates to a quantum dot film with wide color gamut and a preparation method thereof. In order to improve the color gamut and color uniformity of quantum-dot display equipment, the invention provides the quantum dot film with wide color gamut. The quantum dot film comprises a quantum dot layer, wherein an upper barrier layer is adhered on the upper surface of the quantum dot layer; a lower barrier layer is adhered on the lower surface of the quantum dot layer; an upper protective layer is adhered on the upper surface of the upper barrier layer; a lower protective layer is adhered on the lower surface of the lower barrier layer; the quantum dot layer comprises a first quantum dot layer and a second quantum dot layer; the first quantum dot layer is of a prism structure formed by a plurality of triangular prisms in parallel; and the second quantum dot layer is coated above the first quantum dot layer. Compared with an existing quantum dot film, the quantum dot film provided by the invention has the advantages that the distribution of quantum dots is more uniform, so that the light emission of the quantum dot film is higher in uniformity, and the quantum dot film has better optical property. The quantum dot film can be applied to the quantum-dot display equipment.

Description

technical field [0001] The invention relates to a quantum dot film, in particular to a wide color gamut quantum dot film and a preparation method thereof. Background technique [0002] Nowadays, the LEDs used in electronic display devices use a group of light-emitting diodes on the back of the device as the light source, or use blue LEDs and rare earth phosphors to achieve the effect of displaying different colors. The color gamut of traditional LED-backlit liquid crystals is only 70% NTSC, and the color expressiveness is average. At present, many wide color gamut technologies can increase the color gamut of display devices to 80-100% NTSC, but it is difficult to achieve more than 100% NTSC. Quantum dot film technology uses nano-scale quantum dots. The quantum dots under the protection of the film will replace the backlight module of the LED itself. Using blue LED backlight, part of the blue light is converted into red light and green light through quantum dots of different...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B17/06B32B17/10B32B27/06B32B27/36B32B33/00B32B37/02G02F1/13357
CPCB32B17/06B32B17/10027B32B27/06B32B27/36B32B33/00B32B37/02B32B2250/05B32B2250/40B32B2307/422G02F1/1336G02F1/133614
Inventor 金亚东张克然谷文翠
Owner NINGBO CHANGYANG TECH
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