CN109768150A - A kind of high luminance quantum dot film of high stability and a kind of display device - Google Patents
A kind of high luminance quantum dot film of high stability and a kind of display device Download PDFInfo
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- CN109768150A CN109768150A CN201811585268.0A CN201811585268A CN109768150A CN 109768150 A CN109768150 A CN 109768150A CN 201811585268 A CN201811585268 A CN 201811585268A CN 109768150 A CN109768150 A CN 109768150A
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Abstract
The present invention relates to quantum dot film and use quantum dot film display field, and in particular to the display device for making and using the quantum dot film of the high luminance quantum dot film of high stability.In order to solve the problems, such as that existing quantum dot film TV is relatively low compared to common LED TV luminance, the present invention provides a kind of high luminance quantum dot film of high stability and a kind of display device.The high luminance quantum dot film of high stability successively includes upper barrier film, blue light conversion layer and lower barrier film.The blue light conversion layer includes the light-cured type acrylic resin of 100 parts by weight, the scattering particles of 3~30 parts by weight, the photoinitiator of 0.1~5 parts by weight, the green quantum dot of 1~5 parts by weight, the red quantum dot of 1~5 parts by weight.The blue light converting layer thicknesses are 10~150 μm.After the high luminance quantum dot film of high stability provided by the invention is applied to quantum dot film TV, quantum dot film TV and luminance can be effectively improved.
Description
Technical field
The present invention relates to quantum dot film and use quantum dot film display field, and in particular to the high luminance quantum dot of high stability
The display device for making and using the quantum dot film of film.
Background technique
Quantum dot is inorganic nanocrystal, is a kind of nano particle being made of II-VI group or iii-v element, can
Size range applied to display field is 1~30nm.Since the size of quantum dot is less than or equal to exciton Bohr radius, approach
Continuous energy level is converted into discrete energy level, therefore the size of band gap is adjusted by sized size, so that different
Size can show different colors.Quantum dot protects core by shell mostly based on core-shell structure, so that increasing makes
With the service life, in addition to this, also there is an alloy structure, atomicity is controlled by the concentration between each component when synthesis, so as to adjust
The size and wavelength needed out.
With the continuous development of technology, quantum dot is applied to display field known to industry.The application shape of quantum dot
There are three types of formulas, the first is packaged on LED with quantum dot, though the technology can reduce the usage amount of quantum dot, high temperature is affected
The service life of quantum dot；Second is quantum dot pipe, is placed in light guide plate side, the disadvantage is that special jig is needed to clamp, and is transported
It is needed and its careful with using, prevents breakage.The third is in the form of a film, to be placed on light guide plate or diffuser plate, and common
Optical film is identical, relatively easy due to designing, easy to use, is the currently the only form largely used.By combining blue led
Lamp bead, the optical film comprising green and red quantum dot can significantly improve display device colour gamut, from common TV NTSC 75%
It improves to 100% or more, even more than 110%, restores color difference, show color true to nature.Compared to another of high colour gamut
OLED (Organic Light Emitting Diode) display technology, quantum dot display technology are that large scale can be achieved, and are up to 110 cun, relatively low
The optimal case of cost.
, can be relatively low using the TV luminance of quantum dot film compared to common LED television but in luminance, the reason is that amount
The red, green, blue light that son point issues has smaller half-peak breadth, and the white light that common LED issues is continuous spectrum, is issued more
Yellow light, and wavelength contributes more luminance closer to 555nm.Therefore, for quantum dot film, improving luminance is working technology people
What member needed to try to explore and make great efforts.Titanium dioxide scattering particles is added in existing quantum dot film, although titanium dioxide scatters
Particle is with high refractive index, and only needing less additive amount is the color dot that can reach requirement, but part quantum dot matches cognition therewith
In conjunction with influencing the service life and transfer efficiency of quantum dot.
Summary of the invention
In order to solve the problems, such as that existing quantum dot film TV is relatively low compared to common LED TV luminance, the present invention provides one kind
The high luminance quantum dot film of high stability and a kind of display device.The high luminance quantum dot film of high stability provided by the invention is applied to
After quantum dot film TV, the luminance of quantum dot film TV can be effectively improved.It is provided by the invention using the present invention most sub film
The luminance of display device is high.Further, the color long-time stability of quantum dot film provided by the invention are good, long service life,
To improve integral brightness and the service life of quantum dot TV.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical solutions.
The present invention provides a kind of high luminance quantum dot film of high stability, and the quantum dot film includes upper barrier film, blue light turn
Change layer and lower barrier film.
Further, the high luminance quantum dot film of the high stability successively includes upper barrier film, blue light conversion layer and lower resistance
Diaphragm.
Further, the blue light conversion layer includes the light-cured type acrylic resin of 100 parts by weight, 3~30 weight
The scattering particles of number, the photoinitiator (abbreviation initiator) of 0.1~5 parts by weight, the green quantum dot of 1~5 parts by weight,
The red quantum dot of 1~5 parts by weight.The blue light converting layer thicknesses are 10~150 μm.
Further, the blue light conversion layer includes the light-cured type acrylic resin of 100 parts by weight, 15~30 weight
The scattering particles of number, the photoinitiator (abbreviation initiator) of 0.5~0.8 parts by weight, the green quantum of 1~3 parts by weight
Point, the red quantum dot of 1~3 parts by weight.The blue light converting layer thicknesses are 10~50 μm.Preceding solution includes implementing
Example 3-4.
Further, the light-cured type acrylic resin be selected from polyurethane acrylic resin, polyester acrylate resin, or
One of epoxy acrylic resin or at least two combination.
Further, the scattering particles can be spherical shape, and elliposoidal, for full-size at 0.01~5 μm, material is selected from poly- pair
Ethylene terephthalate, ureaformaldehyde-melamine copolymer, styrene, one of polyurethane or at least two combination, into
The size of one-step optimization is 3~5 μm.
Further, the initiator is selected from Irgacure-1173, Irgacure-184, TPO, Irgacure-369,
One of Irgacure-819 or ITX or at least two combination.
Further, the green quantum dot is core-shell structure or the green quantum dot without core-shell structure；The amount of red
Son point is core-shell structure or the red quantum dot without core-shell structure.
Further, the green quantum dot is core-shell structure, and cadmium selenide, cadmium sulfide, indium phosphide etc. is core, vulcanization
Zinc, cadmium sulfide etc. are shell or the green quantum dot without core-shell structure.
Further, the red quantum dot is core-shell structure, and cadmium selenide, cadmium sulfide, indium phosphide etc. is core, vulcanization
Zinc, cadmium sulfide etc. are shell or the red quantum dot without core-shell structure.
Further, the upper barrier film and lower barrier film are by sputter, and vapor deposition or the method being coated with are made, splash
Coating, the material that layer or coating layer is deposited can be inorganic matter or organic matter with water vapor barrier property and oxygen-barrier property.Institute
It states the surface that barrier film is contacted with air and is coated with diffusion particle, diffusion particle is selected from one in PMMA, PBMA, PU, PA or PS
Kind or at least two combination.
It applies the technical scheme of the present invention, can effectively improve the luminance of quantum dot film, collocation system test luminance is promoted
2% or more.
The high luminance quantum dot film of high stability proposed by the invention by optimization quantum dot film formulation come improve luminance and
Stability effectively solves the problems, such as the stability and transfer efficiency of quantum dot, has brightness using the display device of the quantum dot film
The characteristics of degree is high, and the service life is long, color stable.
Detailed description of the invention
Fig. 1 is quantum dot membrane structure provided by the invention.
Wherein, 101 be blue light conversion layer, includes light-cured type acrylic resin, photoinitiator, scattering particles, green amount
It is sub-, red quantum dot；201 be barrier film；301 be the diffusion particle for obstructing film surface.
Specific embodiment
As shown in Figure 1, the present invention provides a kind of high luminance quantum dot film of high stability, the quantum dot film includes upper barrier
Film 201, blue light conversion layer 101 and lower barrier film 201.The surface that the barrier film 201 is contacted with air is coated with diffusion particle
301。
A kind of performance of the high luminance quantum dot film of high stability provided by the invention is tested using following methods:
1,31.5 cun of quantum dot film luminance (Lv), white point coordinates (Wx, Wy) test: is placed in 31.5 cun of backlight
In mould group, backlight is blue light, wavelength 440nm~455nm, test equipment model CS-2000 luminance meter (Konica Minolta
Holding Co., Ltd.), measuring distance 500mm, carried out in dark room conditions the luminance of test quantum dot film, white point coordinates (Wx,
Wy)。
2, stability test: strong blue light test: the self-control that the sample of 3 A4 sizes is placed in 100 times of blue light strengths is surveyed
It tries in platform, temperature controls within 60 ± 5 degree, and ambient humidity was tested a luminance and white point coordinates, and held at interval of 100 hours
It is continuous to proceed to 500 hours.The test result of 3 quantum dot films takes arithmetic mean of instantaneous value.
The high luminance quantum dot film of high stability of the present invention that embodiment 1-8 is provided, the high luminance quantum dot of high stability
Film successively includes upper barrier film, blue light conversion layer and lower barrier film.
The blue light conversion layer includes the light-cured type acrylic resin of 100 parts by weight, the scattering of 3~30 parts by weight
Particle, the photoinitiator (abbreviation initiator) of 0.1~5 parts by weight, the green quantum dot of 1~5 parts by weight, 1~5 parts by weight
Several red quantum dots.The blue light converting layer thicknesses are 10~150 μm.
The light-cured type acrylic resin is selected from polyurethane acrylic resin, polyester acrylate resin or propylene oxide
One of acid resin or at least two combination.
For the full-size of the scattering particles at 0.01~5 μm, material is selected from polyethylene terephthalate, ureaformaldehyde-
Melamine copolymer, styrene, one of polyurethane or at least two combination.
Particular technique parameter is as shown in table 1.
Comparative example 1-2 provide quantum dot film, the quantum dot film successively include upper barrier film, blue light conversion layer and under
Barrier film.
The blue light conversion layer includes the light-cured type acrylic resin of 100 parts by weight, and the inorganic of 0-2 parts by weight dissipates
Radion, the photoinitiator (abbreviation initiator) of 0.5~1 parts by weight, the green quantum dot of 3~5 parts by weight, 3~5 weight
The red quantum dot of number.The blue light converting layer thicknesses are 35~100 μm.Particular technique parameter is as shown in table 1.
The main performance testing results for the quantum dot film that the embodiment of the present invention and comparative example provide are as shown in table 3.
The technical parameter for the high luminance quantum dot film of high stability that 1 embodiment 1-8 of table is provided
The technical parameter for the quantum dot film that 2 comparative example 1-2 of table is provided
The main performance testing results for the quantum dot film that 3 embodiment of the present invention of table and comparative example provide
From embodiment 2, embodiment 5, comparative example 1, comparative example 2, which can be seen that, adds a small amount of scattering particles, can be obvious
Raising brightness and color dot, and after the test of strong blue light, brightness and color dot have no significant change, and the stability of diaphragm is preferable.
From embodiment 2, embodiment 5, comparative example 3, comparative example 4 is as can be seen that when the scattering particles of addition is titanium dioxide
When, although raising brightness and color dot that can be a small amount of, after strong blue light test, brightness and the equal sharp fall of color dot, diaphragm be stablized
Property is poor.
By the data of table 3 it can be concluded that, the high luminance quantum dot film of high stability proposed by the invention have high luminance and
Stability is good.The △ Lv. absolute value for the quantum dot film that wherein embodiment 3-4 is provided is low, and stability is more preferable.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.It is all
The equivalent changes and modifications that content is done according to the present invention are encompassed by the scope of the patents of the invention.
Claims (10)
1. a kind of high luminance quantum dot film of high stability, which is characterized in that the quantum dot film includes upper barrier film, blue light conversion
Layer and lower barrier film.
2. the high luminance quantum dot film of high stability according to claim 1, which is characterized in that the blue light conversion layer includes
The light-cured type acrylic resin of 100 parts by weight, the light of the scattering particles of 3~30 parts by weight, 0.1~5 parts by weight draw
Send out agent, the green quantum dot of 1~5 parts by weight, the red quantum dot of 1~5 parts by weight.
3. the high luminance quantum dot film of high stability according to claim 1, which is characterized in that the blue light converting layer thicknesses
It is 10~150 μm.
4. the high luminance quantum dot film of high stability according to claim 1, which is characterized in that the blue light conversion layer includes
The light-cured type acrylic resin of 100 parts by weight, the scattering particles of 15~30 parts by weight, the light of 0.5~0.8 parts by weight
Initiator, the green quantum dot of 1~3 parts by weight, the red quantum dot of 1~3 parts by weight.The blue light converting layer thicknesses are
10~50 μm.
5. the high luminance quantum dot film of high stability according to claim 1, which is characterized in that the light-cured type acrylic acid
Resin is selected from polyurethane acrylic resin, one of polyester acrylate resin or epoxy acrylic resin or at least two
Combination.
6. the high luminance quantum dot film of high stability according to claim 1, which is characterized in that the material of the scattering particles
Selected from polyethylene terephthalate, ureaformaldehyde-melamine copolymer, styrene, one of polyurethane or at least two
Combination.
7. the high luminance quantum dot film of high stability according to claim 1, which is characterized in that into the ruler of the scattering particles
Very little is 0.01~5 μm.
8. the high luminance quantum dot film of high stability according to claim 1, which is characterized in that the initiator is selected from
One of Irgacure-1173, Irgacure-184, TPO, Irgacure-369, Irgacure-819 or ITX or at least
Two kinds of combination.
9. the high luminance quantum dot film of high stability according to claim 1, which is characterized in that the green quantum dot is core
Shell structure or green quantum dot without core-shell structure；The red quantum dot is core-shell structure or the red quantum without core-shell structure
Point.
10. the high luminance quantum dot film of high stability according to claim 1, which is characterized in that the upper barrier film is under
Barrier film is by sputter, and vapor deposition or the method being coated with are made, sputtered layer, and the material of vapor deposition layer or coating layer, which is selected from, to be had
The inorganic matter or organic matter of water vapor barrier property and oxygen-barrier property.
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| CN111610664A (en) * | 2020-06-12 | 2020-09-01 | 广东万顺科技有限公司 | Backlight module based on brightening barrier film |
| CN111647380A (en) * | 2020-05-06 | 2020-09-11 | 武汉华彩光电有限公司 | Quantum dot film with high luminous efficiency and preparation process thereof |
| CN111650678A (en) * | 2020-06-29 | 2020-09-11 | 苏州龙桥光电有限公司 | High-brightness quantum dot film |
| CN111808603A (en) * | 2020-07-13 | 2020-10-23 | Tcl华星光电技术有限公司 | Quantum dot film, preparation method thereof and display device |
| WO2022050229A1 (en) * | 2020-09-01 | 2022-03-10 | 昭和電工マテリアルズ株式会社 | Wavelength conversion member, backlight unit and image display device |
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| CN111647380A (en) * | 2020-05-06 | 2020-09-11 | 武汉华彩光电有限公司 | Quantum dot film with high luminous efficiency and preparation process thereof |
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| WO2022050229A1 (en) * | 2020-09-01 | 2022-03-10 | 昭和電工マテリアルズ株式会社 | Wavelength conversion member, backlight unit and image display device |
| WO2022049624A1 (en) * | 2020-09-01 | 2022-03-10 | 昭和電工マテリアルズ株式会社 | Wavelength conversion member, backlight unit, and image display device |
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Application publication date: 20190517 |