CN105259598A - Quantum-dot optical film and backlight module - Google Patents
Quantum-dot optical film and backlight module Download PDFInfo
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- CN105259598A CN105259598A CN201510762711.7A CN201510762711A CN105259598A CN 105259598 A CN105259598 A CN 105259598A CN 201510762711 A CN201510762711 A CN 201510762711A CN 105259598 A CN105259598 A CN 105259598A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133621—Illuminating devices providing coloured light
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light
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- Optics & Photonics (AREA)
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- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Luminescent Compositions (AREA)
- Planar Illumination Modules (AREA)
- Optical Elements Other Than Lenses (AREA)
- Liquid Crystal (AREA)
Abstract
The invention relates to a quantum-dot optical film and a backlight module. A quantum dot core layer, an upper water-proof oxygen-insulation encapsulation layer and a lower water-proof oxygen-insulation encapsulation layer are included. The quantum dot core layer comprises, by weight, 80-110 parts of a matrix adhesive, 6-44 parts of a quantum dot microcapsule and 1-15 parts of a diffusion particle. Luminescence efficiency and stability of the quantum-dot optical film are good. A test is performed under high temperature and high humidity conditions. Brightness and color gamut attenuation are low and small.
Description
Technical field
The present invention relates to technical field of flat panel display, particularly relate to a kind of quantum dot blooming and use the backlight module of this film.
Background technology
Liquid crystal display LCD(liquidcrystaldisplay) development of backlight is by cold pole fluorescent tube CCFL(coldcathodefluorescentlamp) develop into LED (Lightemittingdiode) the most universal at present.The back lighting device that liquid crystal display uses comprises for the light source of luminescence, reflector plate, light guide plate, optical diffusion and prismatic lens etc., and passing through of LCD Controlling light, color filter, for which increasing color, constitutes LCD backlight module with upper-part.LCD is using one of the equipment back side group of light emitting diode as white light source, and the mode that wherein white light realizes mainly contains three kinds:
The first is on blue chip, and cover yellow fluorescent powder, the blue light sent is converted into white light, and this mode is simple, use the most general, but colour gamut NTSC is less than 70%.
The second is that LED unit is mixed to form white light by primitive colours LED light source, and colour gamut NTSC can reach 95%, but the method complex manufacturing technology, expensive, the color of synthesized white light is partially yellow.
The mode that the third white light realizes uses LED blue light, excites the blooming being added with red and green two amounts point to form white light.The colour gamut NTSC that this quantum dot film can improve display can reach more than 95%.Being applied in backlight module, having the feature of high-color rendering and high-luminous-efficiency, is emerging technology.
In the mode that the third white light realizes, make quantum dot film by prior art, there is the problem of quantum dot membrane stability difference, cause luminescence efficiency easily to decay, the serviceable life of display reduces greatly.Prior art generally adopts and is directly mixed with resin matrix tackifier, diffusion particle etc. by quantum dot solution, and coating forms quantum dot film.Red and green quantum dot is due to non-refractory, high humidity; the easily feature such as oxidized; water proof oxygen barrier is needed to protect; if quantum dot is directly dispersed in resin matrix tackifier; the various auxiliary agents of adding such as the solvent in resin matrix tackifier, levelling agent, hardening agent make the easy quencher of quantum dot; have impact to quantum dot stability, luminescence efficiency reduces greatly.
Summary of the invention
Technical matters to be solved by this invention is the deficiency existed for prior art, a kind of quantum dot blooming of high colour gamut is provided, described quantum dot film not only possesses high colour gamut but also can improve quantum dot film luminescence efficiency and stability, brightness and colour gamut decay and greatly reduce, and colour gamut NTSC can reach 95% ~ 110%.
Solving the problems of the technologies described above adopted technical scheme is:
A kind of quantum dot blooming, comprise quantum dot core layer, upper water proof oxygen barrier encapsulated layer and lower water proof oxygen barrier encapsulated layer, described quantum dot core layer comprises following component:
Matrix tackifier, 80 weight portion ~ 110 weight portions;
Quantum dot microcapsules, 6 weight portion ~ 44 weight portions;
Diffusion particle, 1 weight portion ~ 15 weight portion;
Described quantum dot microcapsules comprise red quantum dot microcapsules and green quantum dot microcapsules, by capsule-core and cyst wall composition; The capsule-core of red quantum dot microcapsules is the particulate with micropore being adsorbed with red quantum dot, and the capsule-core of green quantum dot microcapsules is the particulate with micropore being adsorbed with green quantum dot, and wherein the weight ratio of red quantum dot microcapsules and green quantum dot capsule is 1:2 ~ 1:15.
Above-mentioned quantum dot blooming, described particulate is one or more the above compositions in organic or inorganic particle, preferred PMMA and organic silicone microparticle.
Above-mentioned quantum dot blooming, the particle diameter of described quantum dot microcapsules is 1 μm ~ 40 μm, preferably 2 μm ~ 25 μm; Described diameter of particle is 0.5 μm ~ 35 μm, and the aperture of micropore is 10nm ~ 40nm, and the micropore degree of depth is 5nm ~ 20nm, and the shape of micropore is cylindrical, conical, polygonal or anomocytic type.
Above-mentioned quantum dot blooming, described diameter of particle is 1.5 μm ~ 20 μm, and the aperture of micropore is 12nm ~ 30nm, and the micropore degree of depth is 6nm ~ 15nm.
Above-mentioned quantum dot blooming, described cyst wall is obtained after heat curing or UV are solidified by adhesive compound, and adhesive is selected from one or more the combination in polystyrene resin, polymethylmethacrylate, acryl resin, urethane resin or epoxy resin.
Above-mentioned quantum dot blooming, described Adhesive composition has also dosed levelling agent, light curing agent, one or more in crosslinking chemical and solvent.
Above-mentioned quantum dot blooming, the refringence between described quantum dot microcapsules and matrix tackifier is more than or equal to 0.005, and the diffusion particle in core layer and the refringence between matrix tackifier are more than or equal to 0.005.
Above-mentioned quantum dot blooming, diffusion particle in described quantum dot core layer is spherical or elliposoidal possess the particle of light diffusion function, for single particle size dispersion or multiple particle diameter mixing dispersion, the diameter of diffusion particle is 0.1 μm ~ 20 μm, preferred l μm ~ 15 μm.
Above-mentioned quantum dot blooming, described quantum dot blooming gross thickness is 25 μm ~ 500 μm.
Quantum dot blooming of the present invention, uses it for and prepares backlight module, and its technical scheme is:
A kind of backlight module, comprise light source, light guide plate, prismatic lens, also comprise quantum dot blooming as above, described quantum dot blooming is between light guide plate and prismatic lens.
Compared with prior art, the present invention has the following advantages:
1, the present invention is owing to adding luminescence efficiency and higher red quantum dot microcapsules, the green quantum dot microcapsules of spectral purity, and make the colour gamut of quantum dot blooming high, NTSC can reach 95% ~ 110%.
2, the present invention adopts quantum dot microcapsules, and its effect is protection quantum dot, can prevent quantum dot quencher, to improve quantum dot film water proof barrier, improve the stability of photoluminescence of quantum dot, stablize quantum dot luminescence efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of small porous particle in quantum dot core layer provided by the invention;
Fig. 2 is the structural representation of quantum dot capsule-core provided by the invention;
Fig. 3 is the structural representation of quantum dot microcapsules provided by the invention;
Fig. 4 is the structural representation of quantum dot film core layer provided by the invention;
Fig. 5 is the structural representation of quantum dot film provided by the invention.
In figure, each label is expressed as: the small porous particle 101, with microcellular structure, the quantum dot that the micropore of 201, small porous particle adsorbs, 301, quantum dot capsule-core, 302, a quantum dot capsule ancient piece of jade, round, flat and with a hole in its centre, 401, quantum dot microcapsules, 402, diffusion particle, 403, matrix tackifier, 501, quantum dot core layer, 502, up and down water proof oxygen barrier encapsulated layer.
Embodiment
Quantum dot blooming of the present invention comprises quantum dot core layer, quantum dot upper and lower water proof oxygen barrier encapsulated layer.Described quantum dot core layer is made up of matrix tackifier and some quantum dot microcapsules be dispersed in matrix tackifier, diffusion particle.Matrix tackifier, 80 weight portion ~ 110 weight portions, quantum dot microcapsules, 6 weight portion ~ 44 weight portions, diffusion particle, 1 weight portion ~ 15 weight portion.Quantum dot microcapsules comprise red quantum dot microcapsules and green quantum dot microcapsules, and quantum dot microcapsules are made up of capsule-core and cyst wall, and described capsule-core is respectively the particulate with micropore being adsorbed with red quantum dot or green quantum dot.
For stablizing the luminescence efficiency of red green quantum dot; the present invention adopts quantum dot microcapsules; quantum dot is dispersed in the micropore of organic or inorganic particulate of porous structure; form quantum dot capsule-core; wrapped up by cyst wall outside quantum dot capsule-core, cyst wall is the protective seam of quantum dot, is namely encapsulated quantum dot capsule-core; which prevent the contact of quantum dot on capsule-core and water in air vapour or other gas, reduce the contact of quantum dot and matrix material resin or various auxiliary agent and the quantum dot quencher that causes simultaneously.Small porous particle is generally organic or inorganic material, and heat-resisting solvent resistance is stablized, and quantum dot is better protected in the micropore of small porous particle, and its stability also improves greatly.
Described capsule-core is one or more above compositions that surface has in the organic or inorganic particulate of porous structure, and preferred PMMA and organosilicon, particle diameter is 0.5 μm ~ 35 μm, and the aperture of micropore is 10nm ~ 40nm, and the aperture degree of depth of micropore is 5nm ~ 20nm.Diameter of particle more bigger serface is less, therefore the aperture of diameter of particle and micropore too conference increase quantum dot consumption in unit area, be unfavorable for reducing costs.The shape in the hole of porous granule is cylindrical, conical, polygonal or anomocytic type.
Preferably, the particle diameter of described particulate is 1.5 μm ~ 20 μm, and the aperture of micropore is 12nm ~ 30nm, and the micropore size degree of depth is 6nm ~ 15nm.
The preparation method of quantum dot capsule-core is as follows:
First the particulate with micropore is added respectively in the red quantum dot solution that percent by weight is 5-20% and green quantum dot solution, mix dispersion fully, according to xenogenesis coherent function method, red quantum dot and green quantum dot can be adsorbed in the surface honeycomb porous of above-mentioned particulate, dry, solvent is volatilized, in the present invention this diffusion particulate having adsorbed a large amount of red quantum dot or green quantum dot is called red quantum dot capsule-core or green quantum dot capsule-core.
In order to improve the stability of quantum dot luminescence efficiency, the present invention is to the above-mentioned particulate being adsorbed with quantum dot---quantum dot capsule-core is encapsulated, and encapsulating material is called cyst wall.Cyst wall is the protective seam of quantum dot; avoid that quantum dot is exposed to be contacted with air or water outside; reduce quantum dot and matrix material resin or the wherein contact of various auxiliary agent and the quantum dot quencher that causes, various auxiliary agent comprises: levelling agent, light curing agent, crosslinking chemical, solvent etc. simultaneously.Quantum dot to be dispersed in particulate micropore and after being encapsulated, avoid quantum dot and contact with the steam in air or other gas the performance degradation caused, improve stability and the luminescence efficiency of quantum dot, the organic or inorganic quantum dot diffusion particulate being adsorbed with red or green quantum dot through being encapsulated is called red or green quantum dot microcapsules, and details are as follows for preparation method:
First configuration has the capsule wall solution of certain viscosity, capsule wall solution can be heat curing or UV cured adhesive, and tackifier is selected from the combination of a kind of in polystyrene resin, polymethylmethacrylate, acryl resin, urethane resin, epoxy resin or at least two kinds.Preferred polyester resin and the agent of urethane resin gluing.Making the simplest embodiment of cyst wall is utilize air suspension, namely the air blast of fluidized bed is used by capsule-core particle suspension in air, by nozzle, the cyst wall adhesive solvent being made into proper viscosity is sprayed at microparticle surfaces, if cyst material selects hot setting adhesive, then improving gas flow temperature makes the solvent in capsule wall solution volatilize, and is formed and has certain thickness cyst wall.If cyst material selects UV cured adhesive, then improve gas flow temperature and the solvent in capsule wall solution is volatilized, then carry out known UV curing mode formation cyst wall.The thickness of cyst wall can be controlled by the extrusion capacity adjusting nozzle.Wall thickness is 0.5 μm ~ 5 μm, when wall thickness is less than 0.5 μm, easy broken wall, and quantum dot can not get protection; The briliancy of quantum dot film can be reduced, preferably 1 μm ~ 2 μm when being greater than 5 μm.The quantum dot Microcapsules Size of final formation 1.0 μm ~ 40 μm, diameter of particle more bigger serface is less, therefore the aperture of diameter of particle and micropore too conference increase quantum dot consumption in unit area, be unfavorable for reducing costs, preferably 1.5 μm ~ 20 μm.
Make cyst wall and also do not get rid of the preparation method adopting other microcapsules, as physical-chemical process, chemical method etc.
In addition, lower increase water proof oxygen barrier encapsulated layer, also plays the object of stable quantum dot luminescence efficiency on core layers.Encapsulated layer water vapor transmittance is preferably 0.l ~ 10
-6mg/m
2.day, 10 are more preferably
-2~ 10
-5mg/m
2m
2.day, preferred 0.l ~ 10 of OTR oxygen transmission rate
-6mg/m
2.day, 10 are more preferably
-2~ 10
-5mg/m
2.day.
Matrix tackifier in quantum dot core layer can select one or more the above compositions in known crylic acid resin, polyurethanes, polyester, acrylic acid multielement alcohols, curing mode adopts heat curing or UV solidification, further optimization polyurethane and polyester resin.
Diffusion particle in quantum dot core layer is spherical or elliposoidal etc. possesses the particle of light diffusion function, and can be single particle size dispersion or multiple particle diameter mixing dispersion, the diameter of diffusion particle be 0.1 μm ~ 20 μm, preferred l μm ~ 15 μm.
Light diffusion particle material in quantum dot core layer can select known silicone based, PS, PMMA, PBMA, TiO
2, CaCO3, AI203, one or more compositions of BaSO4, nylon etc., further preferably PMMA and silicone based one or more combine.
Refringence between described quantum dot microcapsules and matrix tackifier is more than or equal to 0.005, and the diffusion particle in core layer and the refringence between matrix tackifier are more than or equal to 0.005.Quantum dot microcapsules and diffusion particle carry out scattering refraction to the incident ray entered in matrix, and increase the light path of light by quantum dot layer, improve the luminescence efficiency of quantum dot, refractive index difference is larger, and the angle that refraction scattering occurs light is larger.
Described red green quanta point material, comprise in the first compound that the element in II main group and VI main group formed any one, comprise CdSe, CdTe, MgS, MgSe, MgTe, CaS, CaSe, CaTe, SrS, SrSe, SrTe, BaS, BaSe, BaTe, ZnS, ZnSe, ZnTe and CdS; Any one in the second compound that element in III main group and V main group is formed, comprises GaN, GaP, GaAs, InN, InP and InAs; The nucleocapsid structure compound of the multiple coated formation in described first compound and/or described second compound or Doped nanocrystal, the diameter of described quantum dot is 1nm ~ 10nm, preferably the particle size range of red light quantum point is 6nm ~ 9nm further, and the particle size range of described green light quantum point is 2nm ~ 5nm.
Described quantum dot core layer, by adding the red quantum dot microcapsules of different proportion and green quantum dot microcapsules, to meet the chromaticity requirements of different user to quantum dot film.
Red green quantum dot capsule in described quantum dot core layer, wherein the weight ratio of red quantum dot microcapsules and green quantum dot capsule is 1:2 ~ 1:15, and further preferably, described red quantum dot microcapsules and green quantum dot capsules weight are than being 1:5 ~ 1:10.
The thickness of described quantum dot core layer is 2 μm ~ 300 μm, preferably 3 μm ~ 200 μm.
The surface of described quantum dot core layer is provided with upper and lower water proof oxygen barrier encapsulated layer; quantum dot core layer is coated on lower water proof oxygen barrier encapsulated layer; upper and lower water proof oxygen barrier encapsulated layer can also contain the protective finish of electrostatic prevention and anti-stick function, or adds antistatic agent or diffusion particle in water proof oxygen barrier encapsulated layer.
The water proof oxygen barrier encapsulated layer of described quantum dot core layer both sides is made up of one or more layers film with gas (as water vapor, oxygen etc.) obstructing capacity, includes but not limited to that PVA is coated with high-isolation film, polyvinylidene chloride film (PVDC), ethylene/vinyl alcohol copolymer, PET etc.Film thickness is less than 200 μm, preferably 20 μm ~ 100 μm.
The upper water proof oxygen barrier encapsulated layer of described quantum dot core layer and quantum dot core layer bond or are combined with each other.
The invention also discloses a kind of backlight module, comprising: light source, light guide plate, prismatic lens and the quantum dot blooming utilizing the present invention to make, any position that wherein quantum dot blooming is positioned on light guide plate, prismatic lens is upper and lower.
The preparation method of quantum dot blooming of the present invention, comprises the steps:
(1) diffusion particle is added in matrix resin tackifier; stir; continue to add red quantum dot microcapsules and green quantum dot microcapsules that preceding method obtains; mix dispersion fully; continue to add the additive such as levelling agent, hardening agent; mix, obtain quantum dot core layer coating fluid;
(2) quantum dot core layer coating solution step (1) obtained is at the upper surface of water proof oxygen barrier encapsulated layer.
(3) water proof oxygen barrier encapsulated layer in the upper surface bonding or compound of quantum dot core layer.Obtain quantum dot film.
Quantum dot film core layer coating fluid of the present invention, coated the upper surface of lower water proof oxygen barrier encapsulated layer by equipment such as rod painting, scraper for coating, spraying, intaglio plate coating, the coating of nick version, bar seam or slits, form through techniques such as heat curing or UV solidification, dryings.
Quantum dot blooming test brightness provided by the invention and colour gamut computing method as follows:
Luminance test: the quantum dot blooming piece getting 14 cun of sizes, be placed in 14 cun of backlight modules, light under the rated voltage of 24V, measure its brightness and chromaticity coordinate with nitometer (Suzhou Fu Shida scientific instrument company limited produces, model: BM-7).
Colour gamut test and calculating: the diaphragm getting 14 cun of sizes, be placed in 14 cun of displays, replace lower diffusion barrier, after display being adjusted to the duty of regulation, whole audience red, green, blue signal is input to display, by the chromaticity coordinate of nitometer (model: BM-7) difference test center's point, calculate NTSC color gamut value by known set formula.
The present invention will be described in more detail by the following examples.But these embodiments do not limit the present invention, the structure that those skilled in the art makes according to these embodiments, method or conversion functionally are all included in protection scope of the present invention.
Embodiment is as table 1
Table 1 embodiment parameter
Make quantum dot blooming by above-described embodiment and quantum dot optics membrane preparation method of the present invention, test brightness also calculates colour gamut NTSC.Diaphragm is done weatherability test, condition: temperature 85 ° of C, humidity RH85%, time: 1000 hours, again test brightness calculate colour gamut NTSC, after weather resistance test with experiment before ratio percentage be respectively brightness decay amount and colour gamut NTSC damping capacity.
Embodiment data result is as table 2:
The experimental result of comparative example and embodiment shows, quantum dot blooming colour gamut and brightness all use the backlight product of conventional diffusion barrier higher than comparative example 1; Comparative example 2 shows with the experimental result of embodiment, after application quantum dot makes the test of quantum dot blooming weatherability, and brightness decay 7%, colour gamut NTSC decay 8%; After application quantum dot microcapsules make the test of quantum dot blooming weatherability, brightness and colour gamut NTSC damping capacity are all less than 5%.
Claims (10)
1. a quantum dot blooming, comprises quantum dot core layer, upper water proof oxygen barrier encapsulated layer and lower water proof oxygen barrier encapsulated layer, and it is characterized in that, described quantum dot core layer comprises following component:
Matrix tackifier, 80 weight portion ~ 110 weight portions;
Quantum dot microcapsules, 6 weight portion ~ 44 weight portions;
Diffusion particle, 1 weight portion ~ 15 weight portion;
Described quantum dot microcapsules comprise red quantum dot microcapsules and green quantum dot microcapsules, by capsule-core and cyst wall composition; The capsule-core of red quantum dot microcapsules is the particulate with micropore being adsorbed with red quantum dot, and the capsule-core of green quantum dot microcapsules is the particulate with micropore being adsorbed with green quantum dot, and wherein the weight ratio of red quantum dot microcapsules and green quantum dot capsule is 1:2 ~ 1:15.
2. quantum dot blooming according to claim 1, is characterized in that, described particulate is one or more the above compositions in organic or inorganic particle, preferred PMMA and organic silicone microparticle.
3. quantum dot blooming according to claim 2, is characterized in that, the particle diameter of described quantum dot microcapsules is 1 μm ~ 40 μm, preferably 2 μm ~ 25 μm; Described diameter of particle is 0.5 μm ~ 35 μm, and the aperture of micropore is 10nm ~ 40nm, and the micropore degree of depth is 5nm ~ 20nm, and the shape of micropore is cylindrical, conical, polygonal or anomocytic type.
4. quantum dot blooming according to claim 3, is characterized in that, described diameter of particle is 1.5 μm ~ 20 μm, and the aperture of micropore is 12nm ~ 30nm, and the micropore degree of depth is 6nm ~ 15nm.
5. quantum dot blooming according to claim 4, it is characterized in that, described cyst wall is obtained after heat curing or UV are solidified by adhesive compound, and adhesive is selected from one or more the combination in polystyrene resin, polymethylmethacrylate, acryl resin, urethane resin or epoxy resin.
6. quantum dot blooming according to claim 5, is characterized in that, described Adhesive composition has also dosed levelling agent, light curing agent, one or more in crosslinking chemical and solvent.
7. quantum dot blooming according to claim 6, it is characterized in that, refringence between described quantum dot microcapsules and matrix tackifier is more than or equal to 0.005, and the diffusion particle in core layer and the refringence between matrix tackifier are more than or equal to 0.005.
8. quantum dot blooming according to claim 7, it is characterized in that, diffusion particle in described quantum dot core layer is spherical or elliposoidal possess the particle of light diffusion function, for single particle size dispersion or multiple particle diameter mixing dispersion, the diameter of diffusion particle is 0.1 μm ~ 20 μm, preferred l μm ~ 15 μm.
9. quantum dot blooming according to claim 8, is characterized in that, described quantum dot blooming gross thickness is 25 μm ~ 500 μm.
10. a backlight module, comprises light source, light guide plate, prismatic lens, it is characterized in that, also comprises the quantum dot blooming as described in any one of claim 1 to 9, and described quantum dot blooming is between light guide plate and prismatic lens.
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| CN107966852A (en) * | 2017-11-09 | 2018-04-27 | 合肥乐凯科技产业有限公司 | A kind of Ca-Ti ore type quantum dot film |
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| CN109880613A (en) * | 2019-02-28 | 2019-06-14 | 苏州星烁纳米科技有限公司 | Quantum dot compound and preparation method thereof, quantum dot LED light source |
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