CN206039093U - A glimmering optical film for backlight unit - Google Patents
A glimmering optical film for backlight unit Download PDFInfo
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- CN206039093U CN206039093U CN201620894628.5U CN201620894628U CN206039093U CN 206039093 U CN206039093 U CN 206039093U CN 201620894628 U CN201620894628 U CN 201620894628U CN 206039093 U CN206039093 U CN 206039093U
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- quantum dot
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- backlight unit
- mixed crystal
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Abstract
The utility model belongs to the technical field of backlight unit, concretely relates to a glimmering optical film for backlight unit, glimmering optical film includes barrier film layer no. 1, barrier film layer no. 2 and quantum dot layer, and quantum dot layer locates and forms sandwich structure between barrier film layer no. 1 and the barrier film layer, and quantum dot layer is formed by quantum dot mixed crystal, diffusing particle and gluing agent blend. The utility model discloses the glimmering optical film who prepares has replaced the diffusion barrier among the present backlight unit, in the color saturation and promotion colour gamut who obviously improves LCD, can also improve luminance, reduces the consumption.
Description
Technical field
This utility model belongs to back light model setting technology field, and in particular to a kind of fluorescence membrane for backlight module.
Background technology
With the continuous development of Display Technique, people require also more and more higher to the display quality of display device.Current city
The colour gamut that LCD TV on face can be showed is in 68%～72%NTSC (National Television Standards
Committee between), thus the color effect of high-quality can not be provided.For improving the performance colour gamut of LCD TV, the high colour gamut back of the body
Light technology is just becoming the emphasis of research in industry.
Quantum dot film is the blooming piece for substituting diffusion barrier in a kind of module for LCD backlight.Compare common white
Light LED, the backlight module of quantum dot film of being arranged in pairs or groups using blue-ray LED, can be obviously improved the color saturation of liquid crystal display, and
Brightness can be improved while colour gamut is lifted, reduce power consumption.During quantum dot film is prepared, conventional method is directly will amount
Son point is mixed with adhesive, and growth over time, these adhesives occur the impact being quenched to quantum dot light emitting efficiency, enter
And reduce the high colour gamut and stability of quantum dot film display screen.
Utility model content
This utility model mainly provides a kind of fluorescence membrane for backlight module, and prepared fluorescence membrane instead of
Diffusion barrier in existing backlight module, while the color saturation and lifting colour gamut for significantly improving liquid crystal display, also
Brightness can be improved, power consumption is reduced.Its technical scheme is as follows：The fluorescence membrane includes intercepting film layer one, intercepts film layer two and amount
Son point layer, quantum dot layer form sandwich structure between obstruct film layer one and obstruct film layer, and quantum dot layer is mixed by quantum dot
Brilliant, diffusion particle and adhesive blending are formed.
Preferably, red light quantum point and green light quantum point are coated with the quantum dot mixed crystal.
Preferably, the red light quantum point and green light quantum point be CdS, CdSe, CdTe, CdSeTe, CdSeS, InP,
One or more in InAs, CdSe/ZnS, CdTe/ZnS, CdSe/CdS and InP/ZnS semi-conducting material.
Preferably, the red light quantum point accounts for the 10-50% of red light quantum point and green light quantum point total amount, red light quantum point
The total amount amount of accounting for of the 10-20% of quantum dot mixed crystal quality, red light quantum point and green light quantum point is accounted for the total amount of green light quantum point
The 0.1-1% of son point layer quality.
Preferably, the particle diameter of the red light quantum point is 5-9nm, and the particle diameter of the green light quantum point is 1-4nm, is measured
The particle diameter of son point mixed crystal is 10-40nm.
Preferably, the adhesive is acrylic resin, polyurethane resin, polystyrene resins, polymethyl
One or more in sour methyl ester and epoxy resin, the adhesive account for the 85-96% of quantum dot layer quality.
Preferably, the diffusion particle is polystyrene, polymethyl methacrylate, polybutyl methacrylate, silica
One or more in alkane resin, titanium dioxide, brium carbonate and barium sulfate, the particle diameter of diffusion particle is 3-35 μm, diffusion particle
Account for the 2-12% of quantum dot layer quality.
Preferably, film layer one and the thickness of obstruct film layer two of intercepting is 30-100 μm, the thickness of the fluorescence membrane
Spend for 100-300 μm.
Using the above-mentioned fluorescence membrane for backlight module, this utility model has advantages below：
This utility model leads to the diffusion barrier that prepared fluorescence membrane is instead of in backlight module, is significantly improving liquid crystal
While showing the color saturation of device and lift colour gamut, brightness can be improved, power consumption is reduced, moreover it is possible to fluorescence membrane luminous efficiency is improved
And stability, the decay of brightness and colour gamut substantially reduces, and colour gamut NTSC can reach 95-110%.
Description of the drawings
Fig. 1 is the structure chart of the fluorescence membrane for backlight module of the present utility model.
Wherein：1st, intercept film layer one, 2, intercept film layer two, 3, quantum dot layer, 31, quantum dot mixed crystal, 311, red quantum
Point, 312, green light quantum point, 32, diffusion particle.
Specific embodiment
Embodiment 1
The HONGGUANG CdS quantum dot that 0.1g particle diameters are 5nm is weighed, 0.9g particle diameters are added to for the green glow CdTe quantum of 1nm
In saturated solution containing 4.0g Sodium Chloride, carry out being recrystallized to give quantum dot mixed crystal, be fully ground and obtain the mixed of particle diameter 10nm
It is brilliant.0.5g quantum dot mixed crystal is weighed, the polystyrene diffusion particle of 3 μm of 3.5g particle diameters is filled in being added to 96.0g acrylic resins
Divide and mix, then coat the obstruct film layer upper surface of 30 μ m-thicks, film layer is intercepted on quantum dot coating fluid upper surface is compound, it is purple
Outer solidification obtains thickness for 100 μm of fluorescence membranes.
As shown in figure 1, the structure chart of the fluorescence membrane prepared for said method.The fluorescence membrane includes intercepting film layer one
1st, film layer 22 and quantum dot layer 3 is intercepted, quantum dot layer 3 is located at obstruct film layer 1 and intercepts formation sandwich knot between film layer 2
Structure, quantum dot layer 3 are formed by the blending of quantum dot mixed crystal 31, diffusion particle 32 and adhesive.It is coated with quantum dot mixed crystal 31 red
Light quanta point 311 and green light quantum point 312.
Embodiment 2
The red CdSe/ZnS quantum dots that 0.5g particle diameters are 9nm are weighed, 0.5g particle diameters are added for the green glow InP quantum dots of 4nm
To in the saturated solution containing 9.0g sodium citrates, carry out being recrystallized to give quantum dot mixed crystal, be fully ground and obtain particle diameter 40nm
Mixed crystal.10.0g quantum dot mixed crystal is weighed, the titanium dioxide diffusion particle of 35 μm of 5.0g particle diameters is added to 85.0g polyurethane trees
Fully mix in fat, then coat the obstruct film layer upper surface of 100 μ m-thicks, intercept on quantum dot coating fluid upper surface is compound
Film layer, ultra-violet curing obtain thickness for 300 μm of fluorescence membranes.
The structure of fluorescence membrane prepared by said method is as shown in Figure 1.
Embodiment 3
Weigh the HONGGUANG CdSe/ZnS quantum dot that 0.6g particle diameters are 7nm, green glow CdSe/ZnS quantum of the 2.4g particle diameters for 3nm
Point is added in the saturated solution containing 17.0 magnesium sulfate, is carried out being recrystallized to give quantum dot mixed crystal, is fully ground and obtains particle diameter
The mixed crystal of 20nm.2.0g quantum dot mixed crystal is weighed, the polymethyl methacrylate diffusion particle of 10 μm of 12.0g particle diameters is added to
Fully mix in 86.0g polystyrene resins, then coat the obstruct film layer upper surface of 50 μ m-thicks, on quantum dot coating fluid
Film layer is intercepted in surface recombination, and ultra-violet curing obtains thickness for 200 μm of fluorescence membranes.
The structure of fluorescence membrane prepared by said method is as shown in Figure 1.
Embodiment 4
Weigh the HONGGUANG InP/ZnS quantum dot that 0.4g particle diameters are 8nm, green glow CdSe/CdS quantum of the 0.8g particle diameters for 2nm
Point is added in the saturated solution containing 6.8g potassium bromide, is carried out being recrystallized to give quantum dot mixed crystal, is fully ground and obtains particle diameter
The mixed crystal of 30nm.8.0g quantum dot mixed crystal is weighed, the silicone resin diffusion particle of 22 μm of 2.0g particle diameters is added to the poly- first of 90.0g
Fully mix in base acrylic acid methyl ester., then coat the obstruct film layer upper surface of 70 μ m-thicks, in quantum dot coating fluid upper surface
Compound upper obstruct film layer, ultra-violet curing obtain thickness for 250 μm of fluorescence membranes.
The structure of fluorescence membrane prepared by said method is as shown in Figure 1.
Embodiment 5
The HONGGUANG CdSe quantum dot that 0.2g particle diameters are 6nm is weighed, 0.4g particle diameters are added to for the green glow InAs quantum dots of 3nm
In saturated solution containing 3.4g sodium carbonate, carry out being recrystallized to give quantum dot mixed crystal, be fully ground and obtain the mixed of particle diameter 25nm
It is brilliant.4g quantum dot mixed crystal is weighed, the barium sulfate diffusion particle of 28 μm of 4g particle diameters is fully mixed in being added to 92.0g epoxy resin,
Then the obstruct film layer upper surface of 85 μ m-thicks is coated, and film layer, ultra-violet curing is intercepted on quantum dot coating fluid upper surface is compound
Thickness is obtained for 270 μm of fluorescence membranes.
The structure of fluorescence membrane prepared by said method is as shown in Figure 1.
Comparative example 1
Weigh the HONGGUANG CdSe quantum dot that 0.2g particle diameters are 6nm, green glow InAs quantum dot of the 0.4g particle diameters for 3nm, 3.4g
The crystals of sodium carbonate of particle diameter 25nm, the barium sulfate diffusion particle of 28 μm of 4g particle diameters are fully mixed in being added to 92.0g epoxy resin,
Then the obstruct film layer upper surface of 85 μ m-thicks is coated, and film layer, ultra-violet curing is intercepted on quantum dot coating fluid upper surface is compound
Thickness is obtained for 270 μm of fluorescence membranes.
Performance test
Fluorescence membrane prepared by Example 1-5 and comparative example 1 is tested to its performance using following methods：
Bright spot is tested：The fluorescence membrane of 14 cun of sizes is taken, is placed in 14 cun of backlight modules, in the specified electricity of 24V
Pressure is lighted, and measures its brightness and chromaticity coordinate with luminance meter (BM-7).
Weatherability is tested, condition：85 DEG C of temperature, humidity RH85%, time：1000h.
Colour gamut is tested and is calculated：The diaphragm of 14 cun of sizes is taken, is placed in 14 cun of display, replace diffusion barrier, will
Display is adjusted to the working condition of regulation, by whole audience red, green, blue signal input to display, with luminance meter (BM-7) point
The chromaticity coordinate of other test center's point, calculates NTSC value by set formula.After weather resistant experiment, brightness is front with experiment bright
The ratio percent of degree is brightness decay amount, and after weather resistance test, colour gamut NTSC with the ratio percent of front colour gamut NTSC of experiment is
Colour gamut NTSC attenuation.
Test result is as shown in table 1 below.
1 the performance test results of table
Comparative example and embodiment test result indicate that, in weatherability test, quantum dot is coated in crystal, Ke Yiti
The stability of photoluminescence of high quantum dot, reduces fluorescence membrane brightness and the decay of colour gamut.
It will be apparent to those skilled in the art that technical scheme that can be as described above and design, make other various
It is corresponding to change and deformation, and all these change and deformation should all belong to the protection of this utility model claim
Within the scope of.
Claims (3)
1. a kind of fluorescence membrane for backlight module, it is characterised in that：The fluorescence membrane includes intercepting film layer one (1), resistance
Membrane layer two (2) and quantum dot layer (3), quantum dot layer (3) is located at obstruct film layer one (1) and intercepts formation between film layer two (2)
Sandwich structure, quantum dot layer (3) are formed by the blending of quantum dot mixed crystal (31), diffusion particle (32) and adhesive.
2. the fluorescence membrane for backlight module according to claim 1, it is characterised in that：The grain of quantum dot mixed crystal (31)
Footpath is 10-40nm.
3. the fluorescence membrane for backlight module according to claim 1, it is characterised in that：Intercept film layer one (1) and resistance
The thickness of membrane layer two (2) is 30-100 μm, and the thickness of the fluorescence membrane is 100-300 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620894628.5U CN206039093U (en) | 2016-08-16 | 2016-08-16 | A glimmering optical film for backlight unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620894628.5U CN206039093U (en) | 2016-08-16 | 2016-08-16 | A glimmering optical film for backlight unit |
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| Publication Number | Publication Date |
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| CN206039093U true CN206039093U (en) | 2017-03-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107541213A (en) * | 2017-09-19 | 2018-01-05 | 常州华威新材料有限公司 | The process of coated and molded production quantum dot fluorescence membrane |
-
2016
- 2016-08-16 CN CN201620894628.5U patent/CN206039093U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107541213A (en) * | 2017-09-19 | 2018-01-05 | 常州华威新材料有限公司 | The process of coated and molded production quantum dot fluorescence membrane |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |