CN106681056A - Backlight module containing quantum-dot diffusion plate - Google Patents
Backlight module containing quantum-dot diffusion plate Download PDFInfo
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- CN106681056A CN106681056A CN201710165479.8A CN201710165479A CN106681056A CN 106681056 A CN106681056 A CN 106681056A CN 201710165479 A CN201710165479 A CN 201710165479A CN 106681056 A CN106681056 A CN 106681056A
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- quantum dot
- diffuser plate
- dot diffuser
- quantum
- diffusion plate
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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
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/0236—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element
- G02B5/0242—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element by means of dispersed particles
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0268—Diffusing elements; Afocal elements characterized by the fabrication or manufacturing method
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0273—Diffusing elements; Afocal elements characterized by the use
- G02B5/0294—Diffusing elements; Afocal elements characterized by the use adapted to provide an additional optical effect, e.g. anti-reflection or filter
-
- 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
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
-
- 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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Mathematical Physics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
Abstract
The invention provides a backlight module containing a quantum-dot diffusion plate. The backlight module comprises a plastic frame, an optical diaphragm group, a blue-light LED (Light Emitting Diode) lens, a reflecting membrane, a back plate and the quantum-dot diffusion plate, wherein the quantum-dot diffusion plate selects PS (Polystyrene), or PC (Polycarbonate) or PMMA (Polymethyl Methacrylate) plastic particles as raw materials. The backlight module is prepared by uniformly stirring and mixing the selected raw materials and powder mixture and then preparing into optical master batch; selecting the raw materials, the optical master batch, GPPS and quantum dots, uniformly stirring, then putting into an extrusion molding machine, and molding into plate materials of the quantum-dot diffusion plate; and cooling the plate materials of the quantum-dot diffusion plate by an extrusion line, and cutting into a finished quantum-dot diffusion plate product with the size adaptive to the backlight module. The backlight module provided by the invention has the advantages that quantum dots are fused in extrusion molding of the quantum-dot diffusion plate, a white-light excitation layer is excited by blue light to generate white light which penetrates through ineffective areas of the quantum-dot diffusion plate, the light emitting from a light-outgoing surface of the quantum-dot diffusion plate is white light too, and the color difference between the two types of white lights is small, so that the color-difference problem in visible areas can be effectively solved, and the color-range uniformity of the backlight module is high.
Description
Technical field
The present invention relates to backlight technology field, more particularly to a kind of backlight assembly containing quantum dot diffuser plate.
Background technology
Generally, down straight aphototropism mode set includes：Diffuser plate, backboard, the glue frame being arranged at around diffuser plate, LED
Lamp lens, optical diaphragm group, LED lens are fixed on backboard by heat-conducting glue band, and optical diaphragm group is two-sided also by shading
Adhesive tape is fixed in glue frame, and LCDs is then fixed by double faced adhesive tape with backlight module surrounding.
Wherein, diffuser plate major function is incident light is fully scattered, and realizes softer, uniform radiation response.Typically
For, diffuser plate generally used now is all to form GPPS and light diffusion particle by extruding, because light diffusion particle inside contains
There is light diffusing agent, light diffusing agent inevitably absorbs incident light, so as to cause incident light that light is being caused after diffuser plate
Loss, reduce the utilization rate of light, cause light diffusion it is uneven.What the matrix resin of this light diffusing particles was mainly selected is
Light transmittance is high, the engineering plastics of satisfactory mechanical property, and is more projected with PMMA, PS, PC etc..And the light in light diffusing particles expands
Powder mainly includes inorganic light diffusing agent, such as barium sulfate, silica etc. and organic light diffusing agent, and with microspheroidal reunion shape
Based on organic diffusion particle that formula is present.
The in bright gay color degree of liquid crystal display requires more and more higher, and this is accomplished by improving the color gamut value of display device, due to high color
There is the failure area of one fixed width at the membrane cutting edge of domain quantum dot, causes the color in failure area to produce with the color in other regions
Aberration, colour gamut lack of homogeneity.
The content of the invention
To solve above-mentioned the deficiencies in the prior art, the present invention proposes a kind of backlight assembly containing quantum dot diffuser plate.
The technical scheme is that what is be achieved in that：
A kind of backlight assembly containing quantum dot diffuser plate, including glue frame, optical diaphragm group, blue-ray LED lens, reflection
Film, backboard, also including quantum dot diffuser plate；
The quantum dot diffuser plate：From PS or PC or PMMA plastic grains as this material；By weight, 100 parts are chosen
This material, then 3~8 parts of powder mixtures are chosen, it is female by optics is made after this material chosen and the mixing of powder mixture uniform stirring
Grain, the powder mixture includes diffusant, anti-UV agent, oxidant, light stabilizer and lubrication dispersing agent；By weight, choose
100 parts of described material, 1~25 part of the optics master batch, 1-25 part GPPS, 1-9 part quantum dots, input is extruded into after stirring
In type machine, in extrusion shaping machine mixture is melted and stirred, quantum dot diffuser plate is molded by extrusion shaping machine
Sheet material；Quantum dot diffuser plate sheet material is cooled down by extrusion line, makes quantum dot diffuser plate sheet material smooth, and the quantum dot of shaping is expanded
The sheet material that falls apart cuts into and is adapted the quantum dot diffusion board finished product of size with backlight module.
Alternatively, the powder mixture includes by weight：Diffusant 8-12 parts, anti-UV agent 1-3 parts, oxidant 2-4
Part, light stabilizer 0.5-2 parts, lubrication dispersing agent 0.5-2 parts.
Alternatively, the powder mixture also includes fluorescent whitening agent, according to the powder mixture weight ratio, in pulvis
Add the fluorescent whitening agent of 0.1-3 weight portions in mixture.
Alternatively, will put in dual-screw pelletizer after this material chosen and the mixing of powder mixture uniform stirring, make
Optics master batch, the prilling temperature in dual-screw pelletizer between 160 degree to 230 degree, granulation pressure 3Mpa to 13.5Mpa it
Between.
Alternatively, the outlet in the extrusion shaping machine is provided for drawing 3 forward rollers of quantum dot diffuser plate sheet material
Wheel, respectively upper roll wheel, middle running roller, lower roll wheel；
Upper roller wheel load quantum dot diffuser plate incidence surface, central roll wheel load quantum dot diffuser plate exiting surface, lower roll wheel assists central roll
Wheel compresses quantum dot diffuser plate sheet material；
After quantum dot diffuser plate sheet material is molded, running roller is rotated, and can be expanded in quantum dot during affecting sheet material to move
The incidence surface and exiting surface for falling apart suppresses optical grains, and optical grains are determined by the lines of upper roll wheel, middle running roller, lower roll wheel
It is fixed.
Alternatively, the middle running roller is set to mirror roller, and upper roll wheel or lower roll wheel are appointing in concave convex texture or minute surface
It is a kind of.
Alternatively, the plate forming temperature in the extrusion shaping machine is between 270 degree to 300 degree, plate forming pressure
Between 3Mpa to 13.5Mpa.
Alternatively, by extrusion line natural cooling quantum dot diffuser plate sheet material.
Alternatively, the quantum dot diffuser plate density is 1.04~1.06g/cm3, quantum dot diffusion plate thickness be：0.8mm
≤ quantum dot spreads plate thickness≤3mm.
Alternatively, the glue frame has the parallel surface being oppositely arranged with quantum dot diffuser plate, and the parallel surface is also adopted by quantum
Point diffuser plate.
The invention has the beneficial effects as follows：
(1) blue light that blue-ray LED is projected is injected into the quantum dot diffuser plate in backlight assembly, the white light of quantum dot diffuser plate
Excitation layer excites to form white light, because having quantum dot in quantum dot diffuser plate, can absorb sightless blue light, thus can compensate
It is undesired slightly yellow in matrix, while reflecting than original incident wavelength in the more visible of 360-475nm scopes
Light, so that product seems whiter, brighter, more bright-coloured；
(2) while, quantum dot diffuser plate merges quantum dot in extrusion molding, and white light excitation layer is excited generation white by blue light
Through the dead space of quantum dot diffuser plate, and project from the exiting surface of quantum dot diffuser plate is also white light to coloured light line, and two
Person's aberration is little, can be high with the aberration problem of effectively solving visible area, the colour gamut uniformity of backlight module.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structure chart of the backlight assembly containing quantum dot diffuser plate of the present invention；
Fig. 2 is the flow sheet of the quantum dot diffuser plate of the present invention：
Fig. 3 is the quantum dot diffusion board structure figure of the present invention；
Fig. 4 is the quantum dot diffuser plate pattern forming schematic diagram of the present invention.
Each component names are as follows in figure：
1 is diffuser plate incidence surface；2 is diffuser plate exiting surface；3 is quantum dot；4 is upper roll wheel；5 is middle running roller；6 is lower roll
Wheel；7 is quantum diffusion plate sheet material；9 is blue-ray LED lens；10 is backboard；11 is quantum dot diffuser plate；12nd, 13 is blooming piece
Prismatic lens in group；14 is glue frame；15 is reflectance coating.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
The present invention changes the optical property of diffuser plate from the diffuser plate inside of backlight assembly, by extrusion molding step
Cancel light diffusion particle, increase quantum dot particle, the quantum dot diffuser plate inside allowed after being molded has the chemistry of different refractivity
Polymer uniform is dispersed in the upper and lower surface of main body flaggy so as to fabulous optical scattering performance, can deduct blooming
Piece or LED lens numbers, reach backlight module demand effects equivalent.
The present invention proposes a kind of backlight module containing quantum dot diffuser plate, as shown in figure 1, including glue frame, quantum dot
Diffuser plate, optical diaphragm group, blue-ray LED lens, reflectance coating, backboard.
Wherein, first prismatic lens 13 and the second prismatic lens 12 of optical diaphragm group stacks gradually from top to bottom quantum dot diffusion
Above plate 11.Blue-ray LED lens 9 are fixed above backboard 10 by two-sided tape.
Wherein, described optical diaphragm group mainly includes 90 degree of prismatic lenses and 0 degree of prismatic lens.Wanting according to backlight illumination
Ask, the order interchangeable of optical diaphragm group is used, and its face shaping is similar with quantum dot diffuser plate, assembling of the size according to backboard
It is variant with quantum dot diffuser plate.
The backlight module of the present invention also includes reflectance coating 15, and reflectance coating 15 is arranged on below quantum dot diffuser plate 11, and with
Quantum dot diffuser plate has certain interval, it is preferable that reflectance coating 15 is located between blue-ray LED lens 9 and backboard 10.
The glue frame of the present invention has the parallel surface being oppositely arranged with quantum dot diffuser plate, and the parallel surface is also adopted by quantum dot expansion
Fall apart.
The above-mentioned quantum dot diffuser plate of the present invention, as shown in Fig. 2 its production process is comprised the following steps：
Step one, prepares this material：From PS (polystyrene plastics) or PC (Merlon) or PMMA (polymethyls
Sour methyl esters) plastic grain is used as this material.
Step 2, makes optics master batch：By weight, 100 parts of this material described in step one are chosen, then chooses 3~8 parts of pulvis
Mixture, will put in dual-screw pelletizer after this material chosen and the mixing of powder mixture uniform stirring, make gross weight ratio
For 103-108 part optics master batches；Powder mixture includes diffusant, anti-UV agent, oxidant, light stabilizer and lubrication dispersing agent,
Powder mixture includes by weight：Diffusant 8-12 parts, anti-UV agent 1-3 parts, oxidant 2-4 parts, light stabilizer 0.5-2 parts,
Lubrication dispersing agent 0.5-2 parts.To realize the whitening effect of optics master batch, it is preferable that in making optics master batch step, pulvis mixing
Thing also includes fluorescent whitening agent, according to above-mentioned powder mixture weight ratio, the glimmering of 0.1-3 weight portions is added in powder mixture
Optical brightener.
Above-mentioned diffusant selects organosilicon light diffusing agent, is a kind of light diffusing agent for belonging to organic, bonded with silica,
The polymer microballoon of 3-D solid structure, less than oleic series, such as Japan SHIN-ETSU HANTOTAI organosilicon light diffusing agent KMP-590.
Above-mentioned anti-UV agent mainly include benzoic acids, benzophenone, benzotriazole and part hindered amines, than
Such as UV-531, UV-531, UV-2908, the positive hexadecyl ester of 3,5- di-tert-butyl-4-hydroxybenzoic acids
Deng.
Step 3, extrusion molding：By weight, 100 parts of this material are chosen from this material, 1~25 part of optics master batch, choosing is chosen
1-25 part GPPS (General Purpose Polystyrenre) is taken, 1-9 part quantum dots are chosen；By this material for selecting, quantum dot, GPPS mixing
Thing puts in extrusion shaping machine after stirring, and during the High Temperature Rotating of extrusion shaping machine mixture is melted and is stirred
It is even, quantum dot diffuser plate sheet material is molded by extrusion shaping machine.
Nano-fluorescent grain of the quantum dot of the present invention made by semi-conducting material, the property with diffusant
Can, general fluorescent material is different from, quantum dot wavelength is 550nm-620nm, and lateral size of dots is respectively 2mm, 4mm, 6mm, because
Quantum dot particle contains GeSn, therefore growth temperature≤300 DEG C.
As shown in Figures 3 and 4, the outlet in extrusion shaping machine is provided for drawing 3 that quantum dot diffuser plate sheet material 7 moves ahead
Running roller, respectively upper roll wheel 4, middle running roller 5, lower roll wheel 6.Upper roller wheel load quantum dot diffuser plate incidence surface 1, the pressure quantum of middle running roller 5
Point diffuser plate exiting surface 2, lower roll wheel 6 assists central roll wheel to compress quantum dot diffuser plate sheet material 7.
After quantum dot diffuser plate sheet material 7 is molded, running roller is rotated, and can be expanded in quantum dot during affecting sheet material to move
The incidence surface 1 and exiting surface 2 for falling apart suppresses optical grains, and optical grains pass through upper roll wheel 4, middle running roller 5, the line of lower roll wheel 6
Road determines.Wherein, middle running roller 5 is set to mirror roller, and upper roll wheel 4 or lower roll wheel 6 are any one in concave convex texture or minute surface.
Therefore, quantum dot diffuser plate lines has various, and respectively two sides concave convex texture, a face minute surface another side concave convex texture, two sides be all
It is minute surface.
Step 4, cooling cuts：After extrusion molding step, by extrusion line natural cooling quantum dot diffuser plate sheet material,
Make quantum dot diffuser plate sheet material smooth, and by the quantum dot diffuser plate sheet material of shaping cut with down straight aphototropism mode set be adapted
The quantum dot diffusion board finished product of size.
Above-mentioned steps two, make optics master batch the step of in, the prilling temperature in dual-screw pelletizer preferably at 160 degree extremely
Between 230 degree, granulation pressure is preferably between 3Mpa to 13.5Mpa.
Above-mentioned steps three, in extrusion molding step, it is considered to the melting point of quantum dot and resistance to temperature, the plate in extrusion shaping machine
Preferably between 270 degree to 300 degree, plate forming pressure is preferably between 3Mpa to 13.5Mpa for material forming temperature.
Quantum dot diffuser plate density is 1.04~1.06g/cm3, quantum dot diffuser plate melt temperature≤300 DEG C are extruded into
Between about 270 DEG C to 300 DEG C of type temperature.
The quantum dot of the present invention spreads plate thickness：0.8mm≤quantum dot diffusion plate thickness≤3mm.
In the backlight assembly of the present invention, blue-ray LED lens 9 are wavelength 360nm-475nm blue-ray lights, what blue-ray LED was projected
Blue light is injected into quantum dot diffuser plate white light excitation layer and excites to form white light, because having quantum dot in quantum dot diffuser plate, can inhale
Sightless blue light (wave-length coverage is 360-475nm) is received, thus can compensate undesired slightly yellow in matrix, while instead
More visible rays of the wavelength than original incidence in 360-475nm scopes are projected, so that product seems whiter, brighter, more
It is bright-coloured.Meanwhile, quantum dot diffuser plate merges quantum dot in extrusion molding, and white light excitation layer is excited generation white light by blue light
Through the dead space of quantum dot diffuser plate, and project from the exiting surface of quantum dot diffuser plate is also white light, the two aberration
It is little, can be high with the aberration problem of effectively solving visible area, the colour gamut uniformity of backlight module.
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (10)
1. a kind of backlight assembly containing quantum dot diffuser plate, including glue frame, optical diaphragm group, blue-ray LED lens, reflectance coating,
Backboard, it is characterised in that also including quantum dot diffuser plate；
The quantum dot diffuser plate：From PS or PC or PMMA plastic grains as this material；By weight, 100 parts of this material are chosen,
3~8 parts of powder mixtures are chosen again, will make optics master batch, institute after this material chosen and the mixing of powder mixture uniform stirring
Powder mixture is stated including diffusant, anti-UV agent, oxidant, light stabilizer and lubrication dispersing agent；By weight, 100 parts are chosen
Described material, 1~25 part of the optics master batch, 1-25 part GPPS, 1-9 part quantum dots, put into extrusion shaping machine after stirring
In, in extrusion shaping machine mixture is melted and stirred, quantum dot diffuser plate sheet material is molded by extrusion shaping machine；
Quantum dot diffuser plate sheet material is cooled down by extrusion line, makes quantum dot diffuser plate sheet material smooth, and the quantum dot diffuser plate that will be molded
Sheet material cuts into and is adapted the quantum dot diffusion board finished product of size with backlight module.
2. a kind of backlight assembly containing quantum dot diffuser plate as claimed in claim 1, it is characterised in that the pulvis mixing
Thing includes by weight：Diffusant 8-12 parts, anti-UV agent 1-3 parts, oxidant 2-4 parts, light stabilizer 0.5-2 parts, lubrication dispersion
Agent 0.5-2 parts.
3. a kind of backlight assembly containing quantum dot diffuser plate as claimed in claim 2, it is characterised in that the pulvis mixing
Thing also includes fluorescent whitening agent, according to the powder mixture weight ratio, the glimmering of 0.1-3 weight portions is added in powder mixture
Optical brightener.
4. a kind of backlight assembly containing quantum dot diffuser plate as claimed in claim 1, it is characterised in that this material that will be chosen
And put in dual-screw pelletizer after the mixing of powder mixture uniform stirring, optics master batch is made, making in dual-screw pelletizer
Between 160 degree to 230 degree, granulation pressure is between 3Mpa to 13.5Mpa for grain temperature.
5. a kind of backlight assembly containing quantum dot diffuser plate as claimed in claim 1, it is characterised in that be extruded into described
The outlet of type machine is provided for drawing 3 forward running rollers of quantum dot diffuser plate sheet material, respectively upper roll wheel, middle running roller, lower roll
Wheel；
Upper roller wheel load quantum dot diffuser plate incidence surface, central roll wheel load quantum dot diffuser plate exiting surface, lower roll wheel assists central roll wheel load
Tight quantum dot diffuser plate sheet material；
After quantum dot diffuser plate sheet material is molded, running roller is rotated, and meeting is in quantum dot diffuser plate during affecting sheet material to move
Incidence surface and exiting surface suppress optical grains, optical grains are determined by the lines of upper roll wheel, middle running roller, lower roll wheel.
6. a kind of backlight assembly containing quantum dot diffuser plate as claimed in claim 5, it is characterised in that the middle running roller sets
It is set to mirror roller, upper roll wheel or lower roll wheel are any one in concave convex texture or minute surface.
7. a kind of backlight assembly containing quantum dot diffuser plate as claimed in claim 1, it is characterised in that the extrusion molding
Between 270 degree to 300 degree, plate forming pressure is between 3Mpa to 13.5Mpa for plate forming temperature in machine.
8. a kind of backlight assembly containing quantum dot diffuser plate as claimed in claim 1, it is characterised in that by extrusion line from
So cool down quantum dot diffuser plate sheet material.
9. a kind of backlight assembly containing quantum dot diffuser plate as claimed in claim 1, it is characterised in that the quantum dot expands
The density that falls apart is 1.04~1.06g/cm3, quantum dot diffusion plate thickness be：0.8mm≤quantum dot diffusion plate thickness≤3mm.
10. a kind of backlight assembly containing quantum dot diffuser plate as described in any one of claim 1 to 9, it is characterised in that institute
State glue frame and there is the parallel surface being oppositely arranged with quantum dot diffuser plate, the parallel surface is also adopted by quantum dot diffuser plate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710165479.8A CN106681056A (en) | 2017-03-20 | 2017-03-20 | Backlight module containing quantum-dot diffusion plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710165479.8A CN106681056A (en) | 2017-03-20 | 2017-03-20 | Backlight module containing quantum-dot diffusion plate |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107167871A (en) * | 2017-07-07 | 2017-09-15 | 青岛骐骥光电科技有限公司 | A kind of quantum dot light guide plate manufacture equipment and manufacture method |
| CN107246563A (en) * | 2017-07-26 | 2017-10-13 | 合肥惠科金扬科技有限公司 | Quantum dot backlight module, display and quantum dot lens making methods |
| CN108490682A (en) * | 2018-02-24 | 2018-09-04 | 惠州市华星光电技术有限公司 | A kind of optical diaphragm, backlight module and display device |
| CN108803147A (en) * | 2018-07-02 | 2018-11-13 | 京东方科技集团股份有限公司 | Backlight module and display device with it |
| CN109725455A (en) * | 2017-10-31 | 2019-05-07 | 乐金显示有限公司 | Back light unit and liquid crystal display device including the back light unit |
| CN110888190A (en) * | 2019-11-21 | 2020-03-17 | 惠州市凯帝智光电科技有限公司 | High-uniformity quantum dot multifunctional optical composite board |
| CN111454713A (en) * | 2020-04-10 | 2020-07-28 | 南通创亿达新材料股份有限公司 | Perovskite quantum dot powder, preparation method thereof and perovskite quantum dot functional material |
| CN111650775A (en) * | 2020-06-08 | 2020-09-11 | 深圳市天诺通光电科技有限公司 | Quantum dot diffusion plate for preventing quantum dots from being dissipated by heating, manufacturing method and backlight module |
| CN112795031A (en) * | 2021-02-03 | 2021-05-14 | 青岛国骐光电科技有限公司 | QD color master batch and preparation method thereof |
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| CN108803147A (en) * | 2018-07-02 | 2018-11-13 | 京东方科技集团股份有限公司 | Backlight module and display device with it |
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| CN111454713A (en) * | 2020-04-10 | 2020-07-28 | 南通创亿达新材料股份有限公司 | Perovskite quantum dot powder, preparation method thereof and perovskite quantum dot functional material |
| CN111650775A (en) * | 2020-06-08 | 2020-09-11 | 深圳市天诺通光电科技有限公司 | Quantum dot diffusion plate for preventing quantum dots from being dissipated by heating, manufacturing method and backlight module |
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| CN112795031A (en) * | 2021-02-03 | 2021-05-14 | 青岛国骐光电科技有限公司 | QD color master batch and preparation method thereof |
| WO2022184036A1 (en) * | 2021-03-02 | 2022-09-09 | 纳晶科技股份有限公司 | Quantum dot particle aggregate and preparation method therefor, optical conversion component preparation method, quantum dot particle |
| CN113025112A (en) * | 2021-04-21 | 2021-06-25 | 惠州视维新技术有限公司 | Reflection-type printing ink, diffusion plate, backlight module and display device |
| CN113025112B (en) * | 2021-04-21 | 2023-03-10 | 惠州视维新技术有限公司 | Reflection-type printing ink, diffusion plate, backlight module and display device |
| CN116239854A (en) * | 2022-12-16 | 2023-06-09 | 合肥宇皓新型光学材料有限公司 | Quantum dot light diffusion plate |
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Effective date of registration: 20200224 Address after: No.36, Yuyuan Third Road, Jihongtan street, Chengyang District, Qingdao, Shandong Province Applicant after: Qingdao Guoqi Photoelectric Technology Co., Ltd Address before: 266000 jade Ridge Industrial Zone, Chengyang District, Shandong, Qingdao Applicant before: Qingdao Qiji Photoelectric Technology Co.,Ltd. |
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Application publication date: 20170517 |