CN209182545U - A kind of Quantum Dot Glass light guide plate and backlight module - Google Patents
A kind of Quantum Dot Glass light guide plate and backlight module Download PDFInfo
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- CN209182545U CN209182545U CN201920152699.1U CN201920152699U CN209182545U CN 209182545 U CN209182545 U CN 209182545U CN 201920152699 U CN201920152699 U CN 201920152699U CN 209182545 U CN209182545 U CN 209182545U
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Abstract
The utility model relates to a kind of Quantum Dot Glass light guide plates, its upper surface is light-emitting surface, lower surface is reflecting surface, it is characterized by comprising the optical glass layer being arranged from top to bottom, quantum dot site optical waveguide layer and optical adhesive layers, it further include reflective coating, quantum dot site optical waveguide layer is made of multiple quantum dot light guiding points that site formula is distributed in optical glass layer lower surface.Compared with prior art; the Quantum Dot Glass light guide plate of the utility model; it realizes and light extraction efficiency is improved with simpler structure; and realize packaging protection to quantum dot; quantum dot can sufficiently be obstructed to the service life for coming, while capable of promoting quantum dot glass light guide plate with the water oxygen in external environment.
Description
Technical field
The utility model relates to back light model setting technology fields, more particularly to a kind of Quantum Dot Glass light guide plate and backlight mould
Group.
Background technique
Quantum dot is a kind of nanocrystal of zero-dimension structural by a small amount of atomic building, when quantum dot is by particular energy
After the excitation of light or electricity, the fluorescence of certain frequency can be issued.Quantum dot has fluorescence efficiency height, half-peak breadth as luminescent material
Narrow, the features such as colour gamut is wide, is highly suitable for LED backlight substitution traditional rare earth phosphor material powder, is TV, display, mobile phone, flat
Plate computer or other display equipment provides more high brightness and contrast, and brings better color gamut performance and energy demand advantages.
Existing quantum dot backlight module, as shown in Figure 1, being to increase by one based on the basis of traditional LED backlight mould group 2
The structure matching of a quantum dot fluorescence conversion film 1 forms.Though it may be implemented super wide colour gamut, energy consumption, brightness, uniformity and
Product demand growing in market is also much not achieved in the important parameters such as integral thickness.It is in particular in: quantum first
Point is intolerant to water oxygen, thus existing quantum dot fluorescence conversion coating needs to carry out encapsulation up and down using barrier film.It is a large amount of to use resistance
Diaphragm can greatly increase product cost, and this scheme can not solve the problems, such as that the water oxygen of film side is penetrated into, in addition, barrier film exists
Guarantee the transparency for needing to have high while barrier property.Secondly as quantum dot backlight module be backlight module it
On increase one layer of quantum dot fluorescence conversion film, this will necessarily bring the reduction of light extraction efficiency, and it is thick to also bring along whole backlight
The increase of degree.Fabrication error during finally again combining quantum dot fluorescence conversion film and blue light backlight mould group will cause
Emitting brightness and color it is uneven.
Utility model content
The purpose of this utility model is to provide a kind of Quantum Dot Glass light guide plates, compared with prior art, realize with
Simpler structure improves light extraction efficiency, and realizes the packaging protection to quantum dot, can will be in quantum dot and external environment
Water oxygen sufficiently obstruct the service life for coming, while quantum dot glass light guide plate capable of being promoted.
The utility model is achieved through the following technical solutions:
A kind of Quantum Dot Glass light guide plate, upper surface are light-emitting surfaces, and lower surface is reflecting surface, it is characterised in that: including
Optical glass layer, quantum dot site optical waveguide layer and the optical adhesive layer being arranged from top to bottom, further include reflective coating, the quantum dot
Site optical waveguide layer is made of multiple quantum dot light guiding points that site formula is distributed in optical glass layer lower surface.
For the optical glass layer of the utility model other than playing the role of leaded light, itself has high water oxygen rejection rate, can
To guarantee that there is low water oxygen permeability above the optical waveguide layer of quantum dot site.The function of quantum dot site optical waveguide layer is mainly basis
Side entering type blue light source is scattered by the size and site array distribution of quantum dot light guiding points, to obtain in light emission side
To uniform area source, meanwhile, each quantum dot light guiding points in site can convert blue light into pure white light.Optical cement
Layer is made of the optical cement with certain mechanical properties and adhesive strength, and for being bonded reflective coating, reflective coating not only may be used
Effectively to reflect light, surface is avoided to appear blue light, increase light emission side goes out luminous intensity, while reflective coating also has one
Fixed water oxygen obstructing capacity.Therefore, the utility model Quantum Dot Glass light guide plate combines the prior art with simpler structure
The effect of light guide plate and quantum dot fluorescence conversion film in quantum dot backlight module, avoids the use of quantum dot fluorescence conversion film
And light extraction efficiency is higher, while also achieving and adequately protecting to quantum dot, extend Quantum Dot Glass light guide plate uses the longevity
Life.
As an implementation, the optical adhesive layer is covered in outer surface and the optical glass of each quantum dot light guiding points
The lower surface of layer.
As another embodiment, the Quantum Dot Glass light guide plate, it is characterised in that: further include being located at the amount
Inorganic coating between son point site optical waveguide layer and the optical adhesive layer.The material of inorganic coating can be silica, dioxy
Change one of titanium, aluminium oxide, zinc oxide, titanium oxide and titanium nitride, but is not limited to these types of material.
As an implementation, the inorganic coating is pantostrat, is covered in the outer surface of each quantum dot light guiding points
With the lower surface of optical glass layer, the optical adhesive layer is covered in the lower surface of the inorganic coating.
As another embodiment, the inorganic coating is site layer, is covered in the appearance of each quantum dot light guiding points
Face and there is network point distribution corresponding with quantum dot site optical waveguide layer, the optical adhesive layer is covered in the outer of inorganic coating
The lower surface on surface and optical glass layer.
Further, the reflective coating is covered in the lower surface of at least described optical adhesive layer.
Preferably, the reflective coating be covered in the Quantum Dot Glass light guide plate in addition to light emission side and incident side
All faces.
As an implementation, quantum dot site optical waveguide layer is by quantum dot ink in the lower surface of optical glass layer
Solidify.Quantum dot ink can be selected from existing quantum dot composite material, and composition may include resin, quantum dot, solvent, light
Diffusant, antioxidant and other auxiliary agents etc..
Further, optical glass layer, which is selected from, can be used as one of unorganic glass or organic glass of light guide plate, have
There are the transparency, high homogeneity and the higher structural strength of height；The optical adhesive layer is the resin layer with adhesive property,
Such as resin can be selected from polyvinyl alcohol, polyethylene glycol, polyacrylamide, epoxy resin, organic silicon, polyacrylate
One or more of polymer such as class, polyurethanes, vinyl-vinyl acetate copolymer and polycarbonate；The reflectance coating
Layer is tinfoil paper, aluminium foil, silver foil, goldleaf or the conjunction containing elements such as gold, silver, copper, iron, tin, lead, aluminium, magnesium, platinum, palladium, nickel, chromium, zinc
One of layer gold.
The utility model also provides a kind of backlight source module, it is characterised in that: leads including Quantum Dot Glass described above
Tabula rasa.The structure of the backlight source module is more simplified compared with the prior art, and can promote the colour gamut and brightness of backlight simultaneously.
The preparation method of the Quantum Dot Glass light guide plate of the utility model, has the advantages that
(1) the Quantum Dot Glass light conducting plate structure of the utility model is simple, combines prior art quantum dot backlight module
In light guide plate and quantum dot fluorescence conversion film effect, while avoiding the use of quantum dot fluorescence conversion film, tied simplifying
While structure, it is higher to realize light extraction efficiency；The utility model also achieves the packaging protection to quantum dot, is able to ascend quantum
The service life of point glass light guide plate；
(2) since optical glass layer is in addition to that can play the role of outside guide-lighting, itself has with high optical transmittance
High water oxygen rejection rate, it is ensured that there is low water oxygen permeability, instead of original amount above the optical waveguide layer of quantum dot site
Barrier film in son point fluorescence conversion film, compared with prior art, the utility model also as save cost；
(3) barrier film of the prior art is very high to transparency requirement, and the reflective coating of the utility model plays resistance
Every effect, and the transparency is not required, further reduced the cost；
(4) further, if one layer of inorganic coating is arranged again fits in quantum dot site light guide and optical glass layer
It, can be under the premise of not destroying light guide effect greatly since inorganic coating is one layer of fine and close inorganic structure on lower surface
Raising water oxygen obstructing capacity, protected to be formed to quantum dot, even if reflective coating is not affixed on the side of light guide plate, this is practical
It is novel that effective protection also has been formed to quantum dot, therefore, in the presence of inorganic coating, using the sheet of reflective coating
For utility model to the packaging protection better effect of quantum dot, the effect to prolong the service life is more preferable；
(5) reflective coating can only be fitted in the lower section of entire Quantum Dot Glass light guide plate, can also be fitted in light guide plate
On all surface in addition to incident side and light emission side and these surfaces are completely covered, can also further fit in backlight mould
The outer surface of group, adequately protects to quantum dot light guiding points to reach, and promote quantum dot light guiding points goes out photostability.
Detailed description of the invention
Fig. 1 is the backlight module of the prior art and the structure setting schematic diagram of quantum dot fluorescence conversion film；
Fig. 2 is the back light module unit structure schematic diagram in embodiment 1；
Fig. 3 is the back light module unit structure schematic diagram in embodiment 2；
Fig. 4 is the back light module unit structure schematic diagram in embodiment 3；
Fig. 5 is the back light module unit structure schematic diagram in embodiment 4.
In Fig. 1: 1- quantum dot fluorescence conversion film, 2- backlight module, 3- barrier film, 4- quantum dot fluorescence conversion coating, 5- light
Learn glass, 6- light guide structure, 7- reflectance coating, 8- lamp bar；
In Fig. 2~5: 1 '-optical glass layer, 2 '-quantum dot site optical waveguide layers, 3 '-inorganic coating, 4 '-optical adhesive layers,
5 '-reflective coatings, 6 '-lamp bars.
Specific embodiment:
With reference to embodiment, the utility model is described further:
Embodiment 1:
As shown in Fig. 2, the Quantum Dot Glass light guide plate of the present embodiment, upper surface is light-emitting surface, and lower surface is reflecting surface,
Including optical glass layer 1 ', quantum dot site optical waveguide layer 2 ', inorganic coating 3 ' and the optical adhesive layer 4 ' being arranged from top to bottom, also wrap
Reflective coating 5 ' is included, quantum dot site optical waveguide layer 2 ' is led by multiple quantum dots that site formula is distributed in 1 ' lower surface of optical glass layer
Luminous point composition.
In the present embodiment, inorganic coating 3 ' is pantostrat, is covered in outer surface and the optics glass of each quantum dot light guiding points
The lower surface of glass layer 1 ', optical adhesive layer 4 ' are covered in the lower surface of inorganic coating 3 '.Reflective coating 5 ' be covered in except incident side and
All faces except light emission side, in other embodiments, when the setting for having inorganic coating 3 ', reflective coating 5 ' can be covered in
At least lower surface of optical adhesive layer 4 '.
The backlight module of the present embodiment, the Quantum Dot Glass light guide plate including the present embodiment, lamp bar 6 ' are located at quantum dot glass
The one side of glass light guide plate.
Embodiment 2
As shown in figure 3, the Quantum Dot Glass light guide plate of the present embodiment, upper surface is light-emitting surface, and lower surface is reflecting surface,
Including optical glass layer 1 ', quantum dot site optical waveguide layer 2 ', inorganic coating 3 ' and the optical adhesive layer 4 ' being arranged from top to bottom, also wrap
Reflective coating 5 ' is included, quantum dot site optical waveguide layer 2 ' is led by multiple quantum dots that site formula is distributed in 1 ' lower surface of optical glass layer
Luminous point composition.
In the present embodiment, inorganic coating 3 ' be site layer, be covered in the outer surface of each quantum dot light guiding points and have with
The corresponding network point distribution of quantum dot site optical waveguide layer 2 ', optical adhesive layer 4 ' are covered in outer surface and the optics glass of inorganic coating 3 '
The lower surface of glass layer 1 '.Reflective coating 5 ' is covered in all faces in addition to incident side and light emission side.
The backlight module of the present embodiment, the Quantum Dot Glass light guide plate including the present embodiment, lamp bar 6 ' are located at quantum dot glass
The one side of glass light guide plate.
Embodiment 3
As shown in figure 4, the Quantum Dot Glass light guide plate of the present embodiment, upper surface is light-emitting surface, and lower surface is reflecting surface,
It further include reflective coating including the optical glass layer 1 ', quantum dot site optical waveguide layer 2 ' and optical adhesive layer 4 ' being arranged from top to bottom
5 ', quantum dot site optical waveguide layer 2 ' is made of multiple quantum dot light guiding points that site formula is distributed in 1 ' lower surface of optical glass layer.
It is not provided with inorganic coating in the present embodiment, the appearance of each quantum dot light guiding points is directly covered in by optical adhesive layer 4 '
The lower surface in face and optical glass layer 1 '.Reflective coating 5 ' is covered in all faces in addition to incident side and light emission side.
The backlight module of the present embodiment, the Quantum Dot Glass light guide plate including the present embodiment, lamp bar 6 ' are located at quantum dot glass
The one side of glass light guide plate.
Embodiment 4
As shown in figure 5, the Quantum Dot Glass light guide plate of the present embodiment, upper surface is light-emitting surface, and lower surface is reflecting surface,
Including optical glass layer 1 ', quantum dot site optical waveguide layer 2 ', inorganic coating 3 ' and the optical adhesive layer 4 ' being arranged from top to bottom, also wrap
Reflective coating 5 ' is included, quantum dot site optical waveguide layer 2 ' is led by multiple quantum dots that site formula is distributed in 1 ' lower surface of optical glass layer
Luminous point composition.
In the present embodiment, inorganic coating 3 ' is pantostrat, is covered in outer surface and the optics glass of each quantum dot light guiding points
The lower surface of glass layer 1 ', optical adhesive layer 4 ' are covered in the lower surface of inorganic coating 3 '.Reflective coating 5 ' be covered in except incident side and
All faces except light emission side.
The backlight module of the present embodiment, the Quantum Dot Glass light guide plate including the present embodiment, lamp bar 6 ' are located at quantum dot glass
The side of the left and right sides of glass light guide plate.As shown in figure 5, the incident side of Quantum Dot Glass light guide plate two sides is both provided with light source,
The backlight module of this kind of structure can make Quantum Dot Glass light guide plate be able to achieve more evenly go out light；Meanwhile under identical brightness, enter
The blue light strength of light side light source can be lower, to avoid damaging quantum dot because intensity of illumination is excessively high, to mention
Rise the service life of quantum dot.
Embodiment 5
The Quantum Dot Glass light guide plate of embodiment 1 the preparation method comprises the following steps:
S1: cleaning optical glass surface is simultaneously dried；
S2: being drawn in optical glass surface for the painting of quantum dot ink by way of silk-screen printing in optical glass surface, and
Baking sizing；
S3: by the way of magnetron sputtering, silica is covered on the optical glass with quantum dot site optical waveguide layer
Whole surface；In other embodiments, can also be covered on inorganic material by way of high temperature deposition or plating has
The optical glass surface of quantum dot site optical waveguide layer；
S4: tearing the release film on optical cement surface, and the reflective coating for being coated with optical cement is fitted in the following table of light guide plate
Incident side and light emission side surface are only stayed in face and side.
Wherein, S2 is comprised the concrete steps that:
S21: the preparation of quantum dot ink
The green quantum dot dry powder of the red quantum dot of 0.02g and 0.25g are dissolved in 1g toluene, are then added the third of 5g
Alkene acid ester resin (contains ethyl acetate 40%), mechanical stirring 20 minutes, adds 2g silicon dioxide microsphere (particle diameter distribution 0.1-
1.0 microns), the organosilicon levelling agent of the hindered phenol antioxygen of 0.1g and 0.1g, mechanical stirring 50 minutes, obtain quantum dot oil
Ink.
S22: the preparation of quantum dot site optical waveguide layer
Prepared quantum dot ink is printed onto optical glass surface, quantum dot light guiding points by way of silk-screen printing
Hemispherical, a diameter of 50-1500um is highly 20-500um.In 120 DEG C of baking 30min after being completed for printing, had
The optical glass of quantum dot site optical waveguide layer.
Embodiment 6
The preparation method of the Quantum Dot Glass light guide plate of embodiment 2, in the magnetron sputtering step of inorganic material, first in light
It learns and covers a layer mask plate on glass, the aperture of mask plate is consistent with the designed distribution of quantum dot light guiding points, and aperture is
1.2-2 times of quantum dot leaded light spot diameter.Can accurately quantum dot site be carried out by carrying out magnetron sputtering using the mask plate
The encapsulation of silica coating, to reduce the dosage of silica coating.Other preparation steps and embodiment 5 of the present embodiment
It is identical.
Embodiment 7
The preparation method of the Quantum Dot Glass light guide plate of embodiment 3 does not have step S3, and directly using after step S2 has light
The reflective coating for learning glue is fitted in the lower surface and side of light guide plate, only stays incident side and light emission side surface.The present embodiment its
His preparation step is same as Example 5.
Embodiment 8
The preparation method of the Quantum Dot Glass light guide plate of embodiment 4, it is same as Example 5.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.
Claims (10)
1. a kind of Quantum Dot Glass light guide plate, upper surface is light-emitting surface, and lower surface is reflecting surface, it is characterised in that: including from
It further include reflective coating up to the optical glass layer, quantum dot site optical waveguide layer and optical adhesive layer of lower setting, the quantum dot net
Point optical waveguide layer is made of multiple quantum dot light guiding points that site formula is distributed in optical glass layer lower surface.
2. Quantum Dot Glass light guide plate according to claim 1, it is characterised in that: the optical adhesive layer is covered in each amount
The son point outer surface of light guiding points and the lower surface of optical glass layer.
3. Quantum Dot Glass light guide plate according to claim 1, it is characterised in that: further include being located at the quantum dot site
Inorganic coating between optical waveguide layer and the optical adhesive layer.
4. Quantum Dot Glass light guide plate according to claim 3, it is characterised in that: the inorganic coating is pantostrat, is covered
It is placed on the outer surface of each quantum dot light guiding points and the lower surface of optical glass layer, the optical adhesive layer is covered in the inorganic plating
The lower surface of layer.
5. Quantum Dot Glass light guide plate according to claim 3, it is characterised in that: the inorganic coating is site layer, is covered
It is placed on the outer surface of each quantum dot light guiding points and there is network point distribution corresponding with quantum dot site optical waveguide layer, it is described
Optical adhesive layer is covered in the outer surface of inorganic coating and the lower surface of optical glass layer.
6. Quantum Dot Glass light guide plate according to claim 1, it is characterised in that: the reflective coating is covered in the light
Learn the lower surface of glue-line.
7. Quantum Dot Glass light guide plate according to claim 6, it is characterised in that: the reflective coating is covered in the amount
All faces in addition to light emission side and incident side of son point glass light guide plate.
8. Quantum Dot Glass light guide plate according to claim 1, it is characterised in that: quantum dot site optical waveguide layer is by measuring
Son point ink solidifies in the lower surface of optical glass layer.
9. Quantum Dot Glass light guide plate according to claim 1, it is characterised in that: the optical glass layer is selected from and can be used as
One of unorganic glass or organic glass of light guide plate；The optical adhesive layer is the resin layer with adhesive property；It is described anti-
Film layer is penetrated to be tinfoil paper, aluminium foil, silver foil, goldleaf or contain the elements such as gold, silver, copper, iron, tin, lead, aluminium, magnesium, platinum, palladium, nickel, chromium, zinc
One of alloy-layer.
10. a kind of backlight module, it is characterised in that: including any Quantum Dot Glass light guide plate of claim 1~9.
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| CN201920152699.1U CN209182545U (en) | 2019-01-28 | 2019-01-28 | A kind of Quantum Dot Glass light guide plate and backlight module |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112859219A (en) * | 2021-03-11 | 2021-05-28 | 绵阳捷智科技股份有限公司 | Preparation method of quantum dot diffusion plate |
| CN113741098A (en) * | 2021-11-04 | 2021-12-03 | 拓米(成都)应用技术研究院有限公司 | UTG-QD type MINI-LED board and application, preparation method and optical framework thereof |
| CN114702856A (en) * | 2022-04-20 | 2022-07-05 | 广州思而特科技有限公司 | Dot ink for glass light guide plate and manufacturing method of glass light guide plate |
-
2019
- 2019-01-28 CN CN201920152699.1U patent/CN209182545U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112859219A (en) * | 2021-03-11 | 2021-05-28 | 绵阳捷智科技股份有限公司 | Preparation method of quantum dot diffusion plate |
| CN113741098A (en) * | 2021-11-04 | 2021-12-03 | 拓米(成都)应用技术研究院有限公司 | UTG-QD type MINI-LED board and application, preparation method and optical framework thereof |
| CN114702856A (en) * | 2022-04-20 | 2022-07-05 | 广州思而特科技有限公司 | Dot ink for glass light guide plate and manufacturing method of glass light guide plate |
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