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Quantum dot film

A technology of quantum dot film and quantum dot layer, applied in the directions of polymer adhesive additives, non-polymer adhesive additives, non-polymer organic compound adhesives, etc., can solve the problem of unsatisfactory heat resistance of the bonding layer , Reduce the high color gamut stability of the quantum dot film display screen, and achieve the effect of good optical transparency, brightness and color saturation not easy to decline, and good optical characteristics.

Active Publication Date: 2015-04-15
HEFEI LUCKY SCI & TECH IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The general bonding method is to use cyanoacrylate-based optical adhesives. Cyanoacrylates are polymerized by the moisture adsorbed on the surface of the material. The optical adhesive of this material has a quenching effect on the luminous efficiency of quantum dots. With the increase of time, there are problems such as the unsatisfactory heat resistance of the adhesive layer and the reduction of the high color gamut stability of the quantum dot film display.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The method for preparing optical adhesive and attaching quantum dot film:

[0045] 1) Mix the materials according to the ratio in Table 1, stir and mix to form an optical adhesive;

[0046] 2) Configure the quantum dot coating solution containing red / green quantum dots, silica gel particles, diffusion particles, adhesives, additives and solvents; coat quantum dots on the smooth surface of the substrate with water and oxygen barrier protection layer, cured to form a film for later use.

[0047] 3) Coating the prepared optical adhesive on the quantum dot layer obtained in the previous step, with the thickness controlled at 15±5 μm. Bond the smooth surface of the substrate with water and oxygen barrier protection, heat and cure at 80°C under air-isolated conditions, and obtain the quantum dot film bonded with the optical adhesive. Its structure is as follows: figure 1 As shown, the test results are shown in Table 8.

[0048] Table 1 The ratio of the optical adhesive use...

Embodiment 2

[0051] The quantum dot film was prepared according to the method of Example 1, the difference being that the optical adhesive was prepared using the ratio shown in Table 2.

[0052] Table 2 The ratio of the optical adhesive used in Example 2

[0053]

[0054]

Embodiment 3

[0056] The quantum dot film was prepared according to the method of Example 1, the difference being that the optical adhesive was prepared using the ratio shown in Table 3.

[0057] Table 3 The ratio of the optical adhesive used in Example 3

[0058]

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Abstract

A quantum dot film comprises a quantum dot layer (101), a lower water-insulation oxygen-insulation protective layer (102), an optical adhesive layer (103), an upper water-insulation oxygen-insulation protective layer (104) and anti-adhesion layers (105), wherein the quantum dot layer (101) comprises silica gel particles (106), red / green quantum dots (107) adsorbed to the silica gel particles, adhesive (108) and diffusion particles (109); the optical adhesive layer (103) is used for bonding the quantum dot layer (101) and the upper water-isolation oxygen-isolation protective layer (104) and mainly comprises the following compositions in parts by weight: 85-100 parts of methacrylic acid diester monomers, 3-15 parts of thickening agents, 0.5-5 parts of coupling agents, 2-5 parts of initiators and 0.1-0.5 parts of accelerants. The brightness and the color saturation of the quantum dot film are unlikely to fade and the quantum dot film has good optical characteristics and long service life.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a quantum dot film applied to a backlight module. Background technique [0002] Optical adhesive is a special adhesive used for bonding transparent optical components. It is characterized by colorless transparency, light transmittance above 90%, good bonding strength, can be cured at room temperature or medium temperature, and has small curing shrinkage, etc. Features, mainly used for bonding of ITO film, electronic paper, transparent devices, projection screen assembly, display assembly, lens assembly, resistive touch screen, capacitive touch screen, panels and other related electronic optical devices. There are various types of optical adhesives due to different raw materials used, or differences in the preparation and measurement of the same raw materials. Silicone rubber, acrylic resin and unsaturated polyester, polyurethane, epoxy resin, etc. can be used as t...

Claims

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Application Information

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IPC IPC(8): G02B5/02G02F1/13357C09J4/02C09J183/07C09J11/08C09J11/06B32B7/12B32B27/30
CPCB32B7/12B32B27/30C09J4/00C09J11/06C09J11/08C09J183/04G02B5/0242G02F1/1336G02F1/133606G02F1/133614
Inventor 李彩翠王增敏王辉刘红妹汪志松
Owner HEFEI LUCKY SCI & TECH IND
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