CN206892501U - A kind of multi-layer quantum point light diffusion film - Google Patents
A kind of multi-layer quantum point light diffusion film Download PDFInfo
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Abstract
The utility model discloses a kind of multi-layer quantum point light diffusion film, including quantum dot light diffusion layer, and the upper water oxygen barrier layer of the quantum dot light diffusion layer top and bottom, lower water oxygen barrier layer are arranged on, the quantum dot light diffusion layer is made up of the first scattering layer, the first quantum dot layer, the second scattering layer, the second quantum dot layer and the polarizing layer arranged successively from top to bottom.The utility model uses multiple scattering layer and quantum dot layer chi structure, increases light path of the light by quantum dot layer, improves quantum dot utilization rate, improves phototranstormation efficiency, reduces cost；Increase polarizing layer simultaneously so that the light rotation polarized, realize emergent ray uniform, largely prevent light from polarization occurs and eliminates and the phenomenon of light leak occurs.
Description
Technical field
Technology of quantum dots field is the utility model is related to, more particularly to a kind of multi-layer quantum point light diffusion film.
Background technology
In order to meet the needs of people are to the wide colour gamut of display, color high saturation, by adding light in backing structure
The quantum dot device of photoluminescence then becomes effective selection of major display manufacturer.
Quantum dot is as Nano grade material, and due to its narrower size, quantum confined effect is obvious, is excited when by light
When, when excitation level exceedes band gap, electronics transits to conduction band from valence band, and is converted to come in the form of luminous energy, so as to be formed not
Same color；And different colors can be adjusted out by controlling the size of quantum dot size itself.But quantum dot is thin
The thickness of film is probably in tens to one hundred microns, and under so thin thickness, the light conversion ratio of quantum dot is very low, is showed
Have in technology and generally improve the light conversion ratio of quantum dot by increasing quantum dot content, it is expensive yet with quantum dot,
Cost can be increased.
Patent of invention CN103487857A discloses quantum dot film and backlight module, and a kind of quantum dot is disclosed in patent
Film, including quantum dot layer, the quantum dot layer include matrix and some quantum dots being dispersed in matrix, the matrix
In also include some dispersed diffusion particles, between the diffusion particle and matrix refringence be more than 0.01, spread grain
Son is used to be scattered the incident ray of Medium Culture, increases light path of the light by quantum dot layer.In the technical scheme of patent
Using dispersed some diffusion particles in quantum dot layer, incident ray is scattered by diffusion particle, increases light
By the light path of quantum dot layer, but light, after quantum dot, exit direction is random, when the diverging after quantum dot
When light passes through liquid crystal, all light of respective pixel point position can be no longer controlled well, and LCD will occur because of the polarization of light
Eliminate light leakage phenomena.
Utility model content
The purpose of this utility model is part in view of the shortcomings of the prior art, there is provided a kind of multi-layer quantum point light expands
Film is dissipated, using multiple scattering layer and quantum dot layer chi structure, under conditions of quantum dot quantity is certain, improves the profit of quantum dot
With rate, phototranstormation efficiency；Polarizing layer is added simultaneously, the light rotation polarized is realized, realizes that emergent ray uniformly goes out
Penetrate, largely prevent light from polarization occurs and eliminates and the phenomenon of light leak occurs.
The purpose of this utility model can be realized by following technical proposal：A kind of multi-layer quantum point light diffusion film, bag
Quantum dot light diffusion layer is included, and is arranged on the upper water oxygen barrier layer of the quantum dot light diffusion layer top and bottom, the barrier of lower water oxygen
Layer, the quantum dot light diffusion layer by arrange successively from top to bottom the first scattering layer, the first quantum dot layer, the second scattering layer,
Second quantum dot layer and polarizing layer composition.
By the first scattering layer and the second scattering layer respectively to the incident light into the first quantum dot layer, the second quantum dot layer
Line is scattered, and light path of the incident ray by the quantum dot light diffusion layer is added, in the certain condition of quantum dot quantity
Under, the utilization rate of quantum dot is improved, and then improve phototranstormation efficiency；By increasing polarizing layer so that by the first scattering layer,
The light rotation polarized after first quantum dot layer, the second scattering layer and the second quantum dot layer, realizes that emergent ray is uniform
Outgoing, largely prevent light from polarization occurs and eliminates and the phenomenon of light leak occurs.
Further, it is evenly distributed with some quantum dot A in first quantum dot layer, a diameter of the 0 of the quantum dot A
~10nm；Some quantum dot B, a diameter of 10 ~ 20nm of the quantum dot B are evenly distributed with second quantum dot layer.
Further, the thickness of first quantum dot layer is 10 μm ~ 50 μm, and the thickness of second quantum dot layer is 50
μm~100μm。
Further, some diffusion particles, the diffusion grain are evenly distributed with first scattering layer, the second scattering layer
A diameter of 1 μm ~ 15 μm of son.
Further, the thickness of the polarizing layer is 10 μm ~ 100 μm.
The utility model has advantages below and beneficial effect compared with prior art：
1st, the utility model uses multiple scattering layer and quantum dot layer chi structure, increases light of the light by quantum dot layer
Journey, under conditions of quantum dot quantity is certain, quantum dot utilization rate is improved, phototranstormation efficiency is improved, reduces cost；Increase simultaneously
Polarizing layer so that the light rotation polarized, realize emergent ray uniform, largely prevent light from polarizing
Eliminate and the phenomenon of light leak occur.
2nd, the quantum dot A light in the quantum dot layer of the utility model first, which excites, will send blue light, the second quantum dot layer
In quantum dot B light excite and will send green light or red light, so by different incident rays, can be mixed to form
The light of different colours, drastically increases display colour gamut, and color gamut value NTSC reaches 95% ~ 110%.
Brief description of the drawings
Fig. 1 is a kind of structural representation of multi-layer quantum point light diffusion film of the present utility model.
Embodiment
With reference to embodiment and accompanying drawing, the present invention is described in further detail, but the embodiment of the invention
Not limited to this.
Embodiment：As shown in figure 1, a kind of multi-layer quantum point light diffusion film, including quantum dot light diffusion layer 3, and apply
Overlay on the upper water oxygen barrier layer 1 of the top and bottom of quantum dot light diffusion layer 3, lower water oxygen barrier layer 2, the quantum dot light diffusion layer
3 the first scattering layer 31, the first quantum dot layer 32, the second scattering layer 33, the second quantum dot layer 34 by arranging successively from top to bottom
And polarizing layer 35 forms.
By the first scattering layer 31 and the second scattering layer 33 respectively to entering the first quantum dot layer 32, the second quantum dot layer 34
Incident ray be scattered, light path of the incident ray by the quantum dot light diffusion layer 3 is added, in quantum dot quantity one
Under conditions of fixed, the utilization rate of quantum dot is improved, and then improve phototranstormation efficiency；By increasing polarizing layer 35 so that pass through
The light rotation polarized after first scattering layer 31, the first quantum dot layer 32, the second scattering layer 33 and the second quantum dot layer 34
Turn, realize emergent ray uniform, largely prevent light from polarization occurs and eliminates and the phenomenon of light leak occurs.
Some quantum dot A, a diameter of 0 ~ 10nm of the quantum dot A are evenly distributed with first quantum dot layer 32；
Some quantum dot B, a diameter of 10 ~ 20nm of the quantum dot B are evenly distributed with second quantum dot layer 34.
The thickness of first quantum dot layer 32 is 10 μm ~ 50 μm, the thickness of second quantum dot layer 34 for 50 μm ~
100μm。
Some diffusion particles are evenly distributed with first scattering layer 31, the second scattering layer 33, the diffusion particle
A diameter of 1 μm ~ 15 μm.
The thickness of the polarizing layer is 10 μm ~ 100 μm.
The incident upper water oxygen barrier layer 1 of incident ray, is irradiated in the first scattering layer 31 and produces scattering, light through diffusion particle
Direction changes, and injects the first quantum dot layer 31, excites the quantum dot A in the first quantum dot layer 32 to send blue light, this portion
Divide blue light to be scattered afterwards by the second scattering layer 33, into the second quantum dot layer 34, can excite in the second quantum dot layer 34
Quantum dot B send green or red light, the light of mixing pass through polarizing layer 35 so that by the first scattering layer 31, the first amount
The light rotation polarized after son point layer 32, the second scattering layer 33 and the second quantum dot layer 34, is penetrated from lower water oxygen barrier layer 2
Go out.Whole process is scattered by the first scattering layer 31 and the second scattering layer 33, and increase single beam passes through the first quantum dot layer 32, the
The light path of two quantum dot layers 34, in the case where quantum dot distribution is constant, light conversion ratio is improved, and optical haze can be carried out；Together
When the light that is polarized by polarizing layer 35 of light rotate, realize emergent ray uniform, largely prevent
Light occurs polarization and eliminates and the phenomenon of light leak occur.
Certainly, described above is not limitation of the utility model, and the utility model is also not limited to the example above, this skill
The variations, modifications, additions or substitutions that the those of ordinary skill in art field is made in essential scope of the present utility model, also belong to
In the scope of protection of the utility model.
Claims (7)
- A kind of 1. multi-layer quantum point light diffusion film, it is characterised in that：Including quantum dot light diffusion layer, and it is arranged on the amount Upper water oxygen barrier layer, the lower water oxygen barrier layer of son point light diffusion layer top and bottom, the quantum dot light diffusion layer by from top to bottom according to The first scattering layer, the first quantum dot layer, the second scattering layer, the second quantum dot layer and the polarizing layer composition of secondary arrangement.
- A kind of 2. multi-layer quantum point light diffusion film according to claim 1, it is characterised in that：First quantum dot layer In be evenly distributed with some quantum dot A, a diameter of 0 ~ 10nm of the quantum dot A.
- A kind of 3. multi-layer quantum point light diffusion film according to claim 1, it is characterised in that：Second quantum dot layer In be evenly distributed with some quantum dot B, a diameter of 10 ~ 20nm of the quantum dot B.
- A kind of 4. multi-layer quantum point light diffusion film according to claim 1 or 2, it is characterised in that：First quantum The thickness of point layer is 10 μm ~ 50 μm.
- A kind of 5. multi-layer quantum point light diffusion film according to claim 1 or 3, it is characterised in that：Second quantum The thickness of point layer is 50 μm ~ 100 μm.
- A kind of 6. multi-layer quantum point light diffusion film according to claim 1, it is characterised in that：First scattering layer, It is evenly distributed with some diffusion particles in second scattering layer, a diameter of 1 μm ~ 15 μm of the diffusion particle.
- A kind of 7. multi-layer quantum point light diffusion film according to claim 1, it is characterised in that：The thickness of the polarizing layer For 10 μm ~ 100 μm.
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| CN201621079550.8U CN206892501U (en) | 2016-09-26 | 2016-09-26 | A kind of multi-layer quantum point light diffusion film |
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| CN201621079550.8U CN206892501U (en) | 2016-09-26 | 2016-09-26 | A kind of multi-layer quantum point light diffusion film |
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| CN111665586A (en) * | 2019-03-08 | 2020-09-15 | 苏州星烁纳米科技有限公司 | Quantum dot polaroid and display device |
| CN111665586B (en) * | 2019-03-08 | 2022-04-15 | 苏州星烁纳米科技有限公司 | Quantum dot polaroid and display device |
| WO2020181445A1 (en) * | 2019-03-11 | 2020-09-17 | 深圳阜时科技有限公司 | Biological feature detection module, backlight module and electronic device |
| WO2020181444A1 (en) * | 2019-03-11 | 2020-09-17 | 深圳阜时科技有限公司 | Biological characteristic detection module, backlight module, display, and electronic device |
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| CN109887978A (en) * | 2019-03-12 | 2019-06-14 | 京东方科技集团股份有限公司 | Display base plate, its production method and display device |
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| CN110459560A (en) * | 2019-07-26 | 2019-11-15 | 深圳市华星光电半导体显示技术有限公司 | A kind of quantum dot color filter, display panel and display device |
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| CN114241896B (en) * | 2021-12-14 | 2024-03-19 | 广州华星光电半导体显示技术有限公司 | Quantum dot film, manufacturing method thereof, backlight module and display device |
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