CN205427215U - Quantum dot blooming and backlight unit - Google Patents
Quantum dot blooming and backlight unit Download PDFInfo
- Publication number
- CN205427215U CN205427215U CN201520892744.9U CN201520892744U CN205427215U CN 205427215 U CN205427215 U CN 205427215U CN 201520892744 U CN201520892744 U CN 201520892744U CN 205427215 U CN205427215 U CN 205427215U
- Authority
- CN
- China
- Prior art keywords
- quantum dot
- blooming
- micropore
- particle
- core layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Luminescent Compositions (AREA)
Abstract
The utility model relates to a quantum dot blooming and backlight unit, including the quantum dot core layer, go up the water proof and separate oxygen encapsulated layer and water proof down and separate the oxygen encapsulated layer, the quantum dot core layer is equipped with the quantum dot microcapsule. The utility model discloses a quantum dot blooming luminous efficacy and stability are good, test under the humid tropical condition, and luminance is little with the colour gamut decay.
Description
Technical field
This utility model relates to technical field of flat panel display, particularly relates to a kind of quantum dot blooming and uses 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 current most popular LED (Lightemittingdiode).The back lighting device used on liquid crystal display includes that passing through of LCD Controlling light, light filter, for which increasing color, constitutes LCD backlight module with upper-part for luminous light source, reflector plate, light guide plate, optical diffusion and prismatic lens etc..LCD is mainly to have three kinds using one group of light emitting diode at the equipment back side as white light source, the mode that wherein white light realizes:
The first is on blue chip, covers yellow fluorescent powder and the blue light sent is converted into white light, and the simple use of this mode is the most universal, 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 the most yellow.
The mode that the third white light realizes is to use LED blue light, and excitated red and green two amounts point film forms white light.This quantum dot film can improve colour gamut NTSC of display can reach more than 95%.It is applied in backlight module, there is the feature of high-color rendering and high-luminous-efficiency, be emerging technology.
In the mode that the third white light realizes, making quantum dot film by prior art and there is the problem of quantum dot membrane stability difference, cause luminous efficiency easily to decay, the service life of display is substantially reduced.Prior art typically uses and is directly mixed with resin matrix adhesive, 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 feature such as the most oxidized; water proof oxygen barrier is needed to protect; if quantum dot is directly dispersing in resin matrix adhesive; quantum dot stability can be had an impact by the various auxiliary agents of adding such as solvent in resin matrix adhesive, levelling agent, firming agent; the easy quencher of quantum dot, luminous efficiency is substantially reduced.
Utility model content
Technical problem to be solved in the utility model is the deficiency existed for prior art, the quantum dot blooming of a kind of high colour gamut is provided, described quantum dot film not only possesses high colour gamut but also can improve quantum dot film luminous efficiency and stability, brightness is substantially reduced with colour gamut decay, and colour gamut NTSC can reach 95%～110%.
The technical scheme that this utility model is used is:
A kind of quantum dot blooming, including quantum dot core layer, upper water proof oxygen barrier encapsulated layer, with lower water proof oxygen barrier encapsulated layer, described quantum dot core layer contains quantum dot microcapsule and diffusion particle, quantum dot microcapsule is made up of capsule-core and cyst wall, capsule-core is the microgranule with micropore being adsorbed with quantum dot, diameter of particle is 0.5 μm～35 μm, the aperture of micropore is 10nm～40nm, micropore depth is 5nm～20nm, and the particle diameter of quantum dot microcapsule is 1 μm～40 μm, a diameter of 0.1 μm of diffusion particle～20 μm.
Above-mentioned quantum dot blooming, cylindrically shaped, conical, the polygonal or anomocytic type of described micropore.
Above-mentioned quantum dot blooming, described lateral size of dots is 1nm～10nm.
Above-mentioned quantum dot blooming, described quantum dot core layer thickness is 2 μm～200 μm, preferably 3 μm～100 μm.
Above-mentioned quantum dot blooming, described diameter of particle is 1.5 μm～20 μm, and the aperture of micropore is 12nm～30nm, and micropore depth is 6nm～15nm.
Above-mentioned quantum dot blooming, the thickness of described upper and lower water proof oxygen barrier encapsulated layer is less than 150 μm, preferably 15-100 μm.
Above-mentioned quantum dot blooming, described quantum dot blooming gross thickness is 25 μm～500 μm.
A kind of backlight module, including light source, light guide plate, prismatic lens, after improvement, also includes quantum dot blooming as above, and described quantum dot blooming is between light guide plate and prismatic lens.
Compared with prior art, this utility model has the advantage that
This utility model uses quantum dot microcapsule, and its effect is to prevent contacting of quantum dot on capsule-core and steam in air or other gas, simultaneously minimizing quantum dot and matrix material resin or various contacting of auxiliary agent and the quantum dot quencher that causes.Quantum dot is preferably protected in the micropore of small porous particle, and its stability is also greatly improved.The colour gamut making quantum dot blooming is high, and NTSC can reach 95%～110%.
Accompanying drawing explanation
The structural representation of small porous particle in the quantum dot core layer that Fig. 1 provides for this utility model；
The structural representation of quantum dot capsule-core in the quantum dot core layer that Fig. 2 provides for this utility model；
Fig. 3 is the structural representation of quantum dot microcapsule in this utility model quantum dot core layer；
Fig. 4 is the structural representation of this utility model quantum dot blooming core layer；
The structural representation of the quantum dot blooming that Fig. 5 provides for this utility model；
In figure, each label is expressed as: 101, have the small porous particle of microcellular structure, 201, the quantum dot of absorption on the micropore of small porous particle, 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 microcapsule, 402, diffusion particle, 403, matrix adhesive, 501, quantum dot core layer, 502, upper and lower water proof oxygen barrier encapsulated layer.
Detailed description of the invention
This utility model quantum dot blooming includes quantum dot core layer, upper and lower water proof oxygen barrier encapsulated layer.Described quantum dot core layer is made up of matrix adhesive and some quantum dot microcapsules of being dispersed in matrix adhesive, diffusion particle.Quantum dot microcapsule is made up of capsule-core and cyst wall, and described capsule-core is respectively adsorbed with the microgranule with micropore of red quantum dot or green quantum dot.
Described capsule-core is one or more composition described above that surface has in the organic or inorganic microgranule of loose structure, preferably PMMA and organosilicon, and 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 the least, and therefore diameter of particle increases quantum dot consumption in unit are with the aperture too conference of micropore, is unfavorable for reducing cost.Cylindrically shaped, conical, the polygonal or anomocytic type in the hole of porous granule.
Preferably, the particle diameter of described microgranule 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 above-mentioned microgranule quantum dot capsule-core being adsorbed with quantum dot is encapsulated by this utility model, and encapsulating material is referred to as cyst wall.Cyst wall is the protective layer of quantum dot; avoid that quantum dot is exposed to be contacted with air or water outside; the quantum dot quencher simultaneously reducing quantum dot and matrix material resin or the most various contacting of auxiliary agent and cause; improve stability and the luminous efficiency of quantum dot; the organic or inorganic quantum dot diffusion microgranule being adsorbed with red or green quantum dot through being encapsulated is called red or green quantum dot microcapsule; wall thickness is 0.5 μm～5 μm; when wall thickness is less than 0.5 μm; easily breaking cellular wall; quantum dot can not get protection, more than the briliancy that can reduce quantum dot film during 5 μm.Preferably 1 μm～2 μm.Quantum dot Microcapsules Size 1.0 μm ultimately formed～40 μm.
Diffusion particle material in quantum dot core layer can select known silicone, PS, PMMA, PBMA, TiO2, CaCO3, AI203, one or more compositions of BaSO4, nylon etc., further preferably one or more combinations of PMMA and silicone.Diffusion particle in quantum dot core layer is spherical or elliposoidal etc. possesses the particle of light diffusion function, can be single particle size dispersion or the mixing dispersion of multiple particle diameter, a diameter of 0.1 μm of diffusion particle～20 μm, preferably l μm～15 μm.
Described quanta point material, including any one in the first compound that ii main group and the element in VI main group are formed, including 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 ii I main group and V main group is formed, including GaN, GaP, GaAs, InN, InP and InAs；The nucleocapsid structure compound of the multiple cladding formation in described first compound and/or described second compound or Doped nanocrystal, a diameter of 1nm-10nm of described quantum dot, the diameter of further preferred quantum dot is 6nm-9nm.
The thickness of described quantum dot core layer is 2 μm～300 μm, preferably 3 μm～200 μm.
The oxygen barrier encapsulated layer of water proof up and down of described quantum dot core layer both sides is to be made up of one or more layers thin film with gas (steam) obstructing capacity, film material, includes but not limited to the thin film such as PVA coating high-isolation film, polyvinylidene chloride film (PVDC), ethylene/vinyl alcohol copolymer, PET.Film thickness is less than 200 μm, preferably 20-100 μm.
The upper water proof oxygen barrier encapsulated layer of described quantum dot core layer bonds with quantum dot core layer or is combined with each other.
The invention also discloses a kind of backlight module, including: light source, light guide plate, prismatic lens and utilize the quantum dot blooming that this utility model makes, 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 described in the utility model, comprises the steps:
(1) first being added in quantum dot solution by the diffusion particle with loose structure, sufficiently mix dispersion, quantum dot can adsorb in the surface honeycomb porous of above-mentioned diffusion particle, dries, and makes solvent volatilization form capsule-core.
(2) configuration has the capsule wall solution of certain viscosity, with the air blast of fluid bed by capsule-core particle suspension in air, by nozzle, the cyst wall adhesive solvent being made into proper viscosity is sprayed at microparticle surfaces, improves gas flow temperature and make the solvent volatilization in capsule wall solution then form wall thickness.If cyst material selects UV cured adhesive, then improve gas flow temperature and make the solvent in capsule wall solution volatilize, then carry out UV and be solidificated on quantum dot capsule-core formation cyst wall.
(3) matrix resin adhesive adds diffusion particle, stir, continuously add the quantum dot microcapsule that step (2) obtains, sufficiently mix dispersion, continuously add the additive such as levelling agent, firming agent, mix homogeneously, obtain quantum dot core layer coating fluid;
(4) quantum dot core layer coating solution step (3) obtained is at the upper surface of water proof oxygen barrier encapsulated layer.
(5) upper surface in quantum dot core layer bond or be compound on water proof oxygen barrier encapsulated layer.Obtain quantum dot film.
The quantum dot blooming test brightness that this utility model provides is as follows with colour gamut computational methods:
Luminance test
Take the quantum dot blooming piece of 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 luminance meter (Suzhou Fu Shida scientific instrument company limited produces, model: BM-7).
Colour gamut test and calculating
Take the diaphragm of 14 cun of sizes, it is placed in 14 cun of display, replace lower diffusion barrier, display is adjusted to the duty of regulation, whole audience red, green, blue signal is input to display, by the chromaticity coordinate of luminance meter (model: BM-7) test center's point respectively, calculate NTSC value by formula.
By the following examples this utility model is described in detail.But these embodiments are not limiting as embodiment of the present utility model, structure, method or conversion functionally that those skilled in the art is made according to these embodiments are all contained in protection domain of the present utility model.
Respectively implement such as table 1
Table 1 each embodiment parameter
Weatherability is tested, condition: 85 ° of C of temperature, humidity RH85%, time: 1000 hours, test brightness calculate colour gamut NTSC again, after weather resistance test, the ratio percent of brightness and the front brightness of experiment is brightness decay amount, and after weather resistance test, the ratio percent of colour gamut NTSC colour gamut NTSC front with experiment is colour gamut NTSC attenuation.
Embodiment data result such as table 2:
Table 2 performance
Claims (9)
1. a quantum dot blooming, including quantum dot core layer, upper water proof oxygen barrier encapsulated layer and lower water proof oxygen barrier encapsulated layer, it is characterized in that, described quantum dot core layer contains quantum dot microcapsule and diffusion particle, quantum dot microcapsule is made up of capsule-core and cyst wall, capsule-core is the microgranule with micropore being adsorbed with quantum dot, diameter of particle is 0.5 μm～35 μm, the aperture of micropore is 10nm～40nm, micropore depth is 5nm～20nm, and the particle diameter of quantum dot microcapsule is 1 μm～40 μm, a diameter of 0.1 μm of diffusion particle～20 μm.
Quantum dot blooming the most according to claim 1, it is characterised in that the particle diameter of described quantum dot microcapsule is 2 μm～25 μm.
Quantum dot blooming the most according to claim 2, it is characterised in that cylindrically shaped, conical, the polygonal or anomocytic type of described micropore.
Quantum dot blooming the most according to claim 3, it is characterised in that described lateral size of dots is 1nm～10nm.
Quantum dot blooming the most according to claim 4, it is characterised in that described quantum dot core layer thickness is 2 μm～200 μm.
Quantum dot blooming the most according to claim 5, it is characterised in that described diameter of particle is 1.5 μm～20 μm, the aperture of micropore is 12nm～30nm, and micropore depth is 6nm～15nm.
Quantum dot blooming the most according to claim 6, it is characterised in that the thickness of described upper and lower water proof oxygen barrier encapsulated layer is less than 150 μm.
Quantum dot blooming the most according to claim 7, it is characterised in that described quantum dot blooming gross thickness is 25 μm～500 μm, quantum dot core layer thickness is 3 μm～100 μm, and the thickness of upper and lower water proof oxygen barrier encapsulated layer is 15 μm～100 μm.
9. a backlight module, including light source, light guide plate, prismatic lens, it is characterised in that also including the quantum dot blooming as described in any one of claim 1 to 8, described quantum dot blooming is between light guide plate and prismatic lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520892744.9U CN205427215U (en) | 2015-11-10 | 2015-11-10 | Quantum dot blooming and backlight unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520892744.9U CN205427215U (en) | 2015-11-10 | 2015-11-10 | Quantum dot blooming and backlight unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205427215U true CN205427215U (en) | 2016-08-03 |
Family
ID=56518339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520892744.9U Active CN205427215U (en) | 2015-11-10 | 2015-11-10 | Quantum dot blooming and backlight unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205427215U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106505137A (en) * | 2016-11-01 | 2017-03-15 | 厦门世纳芯科技有限公司 | Excellent quantum dot reinforcing membrane of a kind of optical effect and preparation method thereof |
-
2015
- 2015-11-10 CN CN201520892744.9U patent/CN205427215U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106505137A (en) * | 2016-11-01 | 2017-03-15 | 厦门世纳芯科技有限公司 | Excellent quantum dot reinforcing membrane of a kind of optical effect and preparation method thereof |
| CN106505137B (en) * | 2016-11-01 | 2018-08-17 | 厦门世纳芯科技有限公司 | A kind of quantum dot that optical effect is excellent enhancing film and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105259598B (en) | A kind of quantum dot optical film and backlight module | |
| CN105259704A (en) | Quantum dot film and backlight module | |
| US9546320B2 (en) | Quantum dot film applied to backlight module | |
| KR101604339B1 (en) | Light conversion film, baclight unit and display devive comprising the same | |
| CN105259601B (en) | A kind of multi-layer quantum point film and backlight module | |
| CN104536078B (en) | A kind of dichroic filter enhancing fluorescence light guide plate and preparation method thereof | |
| CN100527457C (en) | GaN-base semiconductor light emitting element, planar light source device, and liquid crystal display assembly | |
| CN100591746C (en) | Light-emitting body, lighting device and display device using the same | |
| CN104459845B (en) | A kind of quantum dot light diffusion barrier | |
| CN109979958A (en) | MicroLED display panel | |
| TW201831653A (en) | Micro led and display device including the same | |
| CN107966855A (en) | A kind of green quantum dot film and its backlight module | |
| CN207799291U (en) | A kind of high colour gamut illuminating module | |
| CN207198363U (en) | A kind of light guide plate, backlight module and display device | |
| JP2007243135A (en) | Illuminating device, and display equipped with it | |
| CN106855648A (en) | Quantum dot polarization element, backlight module and liquid crystal display device | |
| CN104910819A (en) | UV curing adhesive, quantum dot light conversion film and white light emitting device comprising quantum dot light conversion film | |
| WO2019140707A1 (en) | White-light led, and preparation method therefor and use thereof | |
| CN107275462A (en) | LED, backlight module and liquid crystal display device | |
| CN206684429U (en) | A kind of color membrane substrates, liquid crystal panel and liquid crystal module | |
| CN106054458A (en) | Fluorescent film for backlight module and manufacturing method of fluorescent film | |
| CN108257948A (en) | White light emitting diode and backlight module | |
| CN107093662A (en) | A kind of new full-inorganic perovskite quantum dot silica-gel lens and preparation method thereof | |
| CN106647037A (en) | Quantum dots backlight module and liquid crystal display device | |
| CN205353517U (en) | Quantum dot membrane and backlight unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |