CN107420856A - A kind of reflector plate and preparation method thereof, backlight module - Google Patents
A kind of reflector plate and preparation method thereof, backlight module Download PDFInfo
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- CN107420856A CN107420856A CN201710561475.1A CN201710561475A CN107420856A CN 107420856 A CN107420856 A CN 107420856A CN 201710561475 A CN201710561475 A CN 201710561475A CN 107420856 A CN107420856 A CN 107420856A
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- quantum dot
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/10—Construction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/02—Combinations of only two kinds of elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
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- General Engineering & Computer Science (AREA)
- Planar Illumination Modules (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
The invention discloses a kind of reflector plate and preparation method thereof, backlight module.The reflector plate is used to reflect incident light, including at least bubble layer and first film layer on the surface for the non-light incidence side for being arranged at bubble layer, wherein, bubble layer includes multiple embedded bubbles and quantum dot, quantum dot produces under the exciting of incident light has the light of different wave length with incident light, the display colour gamut of reflector plate emergent light can be improved, and embedded bubble and quantum dot can reduce the thickness of reflector plate and backlight module.
Description
Technical field
The present invention relates to display technology field, more particularly to a kind of reflector plate and preparation method thereof, backlight module.
Background technology
Reflector plate is the important composition part of display device, and it can significantly improve the light utilization efficiency of display device, is improved
The display brightness of display device, save electric energy.Quantum dot is the nano material of quasi-zero dimension, by change quantum dot size and it
Chemical composition its emission spectrum can be made to cover whole visible region, quantum dot has exciting light spectrum width and continuously distributed, because
This can significantly lift the display colour gamut of display device.
The present inventor has found in long-term research and development, anti-to improve the light of reflector plate in currently available technology
Rate is penetrated, general to improve inorganic matter in reflector plate, the concentration of such as titanium oxide, but with the increase of titanium oxide concentration, reflector plate
Weight, volume can all significantly increase, and intensity can diminish.To improve the display colour gamut of display device, usually by quantum dot film
Piece is encapsulated on the blooming pieces such as polaroid or reflector plate, and this mode can also increase the thickness of reflector plate and whole display part
Degree, is unfavorable for the lightening of display device.
The content of the invention
The present invention solves the technical problem of a kind of reflector plate and preparation method thereof, backlight module is provided, with increase
Colour gamut is shown, and reduces the thickness of reflector plate and backlight module.
In order to solve the above technical problems, one aspect of the present invention is：A kind of reflector plate is provided.The reflection
Reflector plate described in piece is used to reflect incident light, comprises at least：Bubble layer, including multiple embedded bubbles and quantum dot, the amount
Son point produces the light for having different wave length with the incident light under the exciting of the incident light；First film layer, it is arranged at described
The surface of the non-light incidence side of bubble layer, for incident light described in diffusing reflection.
In order to solve the above technical problems, another technical solution used in the present invention is：A kind of backlight module is provided.It is described
Backlight module includes above-mentioned reflector plate and is arranged at the light guide plate of the light emission side of the reflector plate, and the reflector plate is by the incidence
Light reflexes to the light guide plate.
In order to solve the above technical problems, another technical scheme that the present invention uses is：A kind of making of reflector plate is provided
Method.The preparation method includes setting bubble layer, wherein, the bubble layer includes multiple embedded bubbles and quantum dot, institute
State quantum dot and the light that there is different wave length with the incident light is produced under the exciting of the incident light；In the non-of the bubble layer
The surface of incident side sets the first film layer, and first film layer is used for the incident light that diffusing reflection is incident to the reflector plate.
The beneficial effect of the embodiment of the present invention is：Be different from prior art, reflector plate of the embodiment of the present invention be used to reflecting into
Light is penetrated, including at least bubble layer and first film layer on the surface for the non-light incidence side for being arranged at bubble layer, wherein, bubble layer includes more
Individual embedded bubble and quantum dot, quantum dot produces under the exciting of incident light has the light of different wave length with incident light, can carry
The display colour gamut of high reflection piece emergent light, embedded bubble and quantum dot can reduce the thickness of reflector plate and backlight module.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of reflector plate one of the present invention；
Fig. 2 is the operation principle schematic diagram of the bubble layer of Fig. 1 embodiment reflector plates；
Fig. 3 is the structural representation of another embodiment of reflector plate of the present invention；
Fig. 4 is the structural representation of the embodiment of backlight module one of the present invention；
Fig. 5 is the structural representation of another embodiment of backlight module of the present invention；
Fig. 6 is the schematic flow sheet of an embodiment of the preparation method of reflector plate of the present invention；
Fig. 7 is the idiographic flow schematic diagram of the step 601 of Fig. 6 embodiment preparation methods.
Embodiment
Referring to Fig. 1, Fig. 1 is the structural representation of the embodiment of reflector plate one of the present invention.The reflector plate 101 of the present embodiment is used
Incident light in reflected illumination to reflector plate 101；Reflector plate 101 comprises at least the film layer 103 of bubble layer 102 and first, and first
Film layer 103 is arranged at the surface of the non-light incidence side of bubble layer 102, for diffusing reflection incident light, wherein, bubble layer 102 includes more
Individual embedded bubble 104 and quantum dot 105, quantum dot 105 produces under the exciting of incident light has different wave length with incident light
Light.
The thickness of reflector plate 101 can be ignored relative to the surface size of incident side, therefore, the present embodiment
The incident side of reflector plate 101 is its light emission side, and the incident side of bubble layer 102 is its light emission side, does not consider the side of incident side
The optical phenomena on side.
Light reflection refers to the phenomenon that light wave runs into other medium interfaces and partly still propagated in original matter.The present embodiment
For reflector plate 101 by setting bubble 104 in bubble layer 102, the light that can make to expose to bubble 104 is reflected back incident side, with
Improve the light reflectivity of reflector plate 101.Bubble layer 102 is by heating, melting to materials such as base material, quantum dot 105, expanded materials
Foaminess resin fused mass is formed after melting and being kneaded, then foaminess resin fused mass is extruded, stretched and is formed.Its
In, base material can be, but not limited to, polyethylene terephthalate (Poly Ethylene Terephthalate, PET),
Polypropylene etc., foaming agent can be, but not limited to, the physical blowing agents such as nitrogen dioxide, carbon dioxide, or the chemistry such as ammonium hydrogencarbonate
Foaming agent.In other embodiments, it can also will by base material melt molding be first sheet, then be placed in the flat substrates of gained
It is allowed to after being impregnated with inert gas in pressurized inert gas atmosphere, heats at ambient pressure, is allowed to produce bubble, forms bubble layer 102.
Certainly, the bubble layer 102 of the present embodiment still further comprises the inorganic fillers such as titanium oxide and foaming regulator, oxygen
The refractive index of change titanium is higher, and light absorbs are few, can improve the light reflectivity of reflector plate 101, and titanium oxide can be used as quantum dot 105
Screen layer.
The present embodiment reflector plate 101 is provided with the first film layer 103 on the surface of the non-light incidence side of bubble layer 102, can will be from
The light diffusing reflection return-air alveolar layer 102 that the surface transmission of the non-light incidence side of bubble layer 102 goes out, to increase the reflection of the light of reflector plate 101
The uniformity of rate and emergent light.First film layer 103 can be, but not limited to, metal, dielectric, resin or other materials.To enter
One step increase the emergent light of reflector plate 101 uniformity, can improve bubble 104, quantum dot 105 bubble layer 102 uniformity.
The present embodiment does not limit bubble 104, the concentration of quantum dot 105, size.
Prior art is different from, the quantum dot 105 of the present embodiment produces under the exciting of incident light to be had not with incident light
The light of co-wavelength, can improve the display colour gamut of the emergent light of reflector plate 101, and embedded bubble 104 and quantum dot 105 can be reduced
The thickness of reflector plate 101.
Wherein, the quantum dot 105 of the present embodiment is arranged in bubble 104.This setup, can further it improve anti-
The uniformity of the emergent light of piece 101 is penetrated, quantum dot 105 can be in the extrusion of bubble 104, drawing process as bubble 104 homogenizes.
For this setup, first quantum dot 105 can be mixed with foaming agent, quantum dot 105 is wrapped up by foaming agent, formed mixed
Compound, foaminess resin melting is formed after then mixture is mixed, heats, melts and is kneaded with foaming regulator and base material
Thing, so that when extrusion, stretching foaminess resin fused mass form bubble 104, bubble 104 wraps up quantum dot 105.
Certainly, in other embodiments, quantum dot 105 can be completely or partially arranged at outside bubble 104.
Alternatively, the incident light of the present embodiment is blue laser, and quantum dot 105 includes green quantum dot and red quantum
Point；Green quantum dot and red quantum dot produce green glow and feux rouges respectively under the exciting of blue light laser source.The present embodiment it is anti-
It is the white light formed by blue laser, green glow, feux rouges colour mixture to penetrate the emergent light of piece 101, because quantum dot 105 have exciting light spectrum width and
Continuously distributed characteristic, there is high the advantages of showing colour gamut into emergent light by the blue laser, green glow, feux rouges colour mixture.
As shown in Fig. 2 the part that blue laser B is transmitted through in bubble 104 excites green quantum dot 201 and red quantum dot
202, green glow G and feux rouges R is produced respectively, and part green glow G and feux rouges R reflects the light emission side of retroreflective sheeting 101 through bubble 104, i.e.,
The surface of the incident side of bubble layer 102, some blue light B, green glow G and feux rouges R are transmitted through the first film layer 103, by the first film layer 103
The exiting surface of diffusing reflection retroreflective sheeting 101, part blue laser B are directly reflected the light emission side of retroreflective sheeting 101 by bubble 104.
(not shown)
Certainly, in other embodiments, amount of red can be replaced using the quantum dot 105 of other colors according to the actual requirements
Son point 201 and/or green quantum dot 202, with blue light colour mixture into white light or non-white coloured light, for example, quantum dot 105 includes Huang
Color quantum dot, yellow quantum dot generation gold-tinted under the exciting of blue light laser source, blue laser synthesize white light with gold-tinted.
Alternatively, the quantum dot 105 of the present embodiment includes core luminescent nanocrystal/shell luminescent nanocrystals and cladding material
Material；The composition of core luminescent nanocrystal/shell luminescent nanocrystals vulcanizes including cadmium selenide CdSe/ zinc sulphide ZnS, indium phosphide InP/
Zinc ZnS, lead selenide PbSe/ vulcanized lead PbS, cadmium selenide CdSe/ cadmium sulfides CdS, cadmium telluride CdTe/ cadmium sulfides CdS or cadmium telluride
Any of CdTe/ zinc sulphide ZnS or any is a variety of；Covering material is by methacrylic, phenylethylene, metering system
The combination copolymer resins that any of sour methyl esters class, carbonates or any a variety of copolymerization obtain.
The present invention further provides the reflector plate of another embodiment, and the reflector plate disclosed in the present embodiment is in above-described embodiment
Reflector plate on the basis of be described.Referring to Fig. 3, the reflector plate 301 of the present embodiment further comprises the second film layer 302,
The surface of the light emission side of bubble layer 303 is arranged at, for scattering the emergent light of bubble layer 303, increases the emergent light of reflector plate 301
Uniformity.Second film layer 302 can be, but not limited to, metal, dielectric, resin or other materials.
Referring to Fig. 4, Fig. 4 is the structural representation of the embodiment of backlight module one of the present invention.The present embodiment backlight module 401
Light guide plate 403 including reflector plate 402 and the light emission side for being arranged at reflector plate 402, reflector plate 402 will be incident to reflector plate 402
Incident light reflex to light guide plate 403.The present embodiment backlight module 401 further comprises backlight 404, and backlight 404 is led
Tabula rasa 403 provides backlight.The backlight 404 of the present embodiment is side entering type light source, that is, is arranged on the both sides of light guide plate 403.
Wherein, the reflector plate 402 of the present embodiment comprises at least the film layer 406 of bubble layer 405 and first, and the first film layer 406 is set
The surface of the non-light incidence side of bubble layer 405 is placed in, for diffusing reflection incident light, wherein, bubble layer 405 includes multiple embedded gas
Bubble 407 and quantum dot 408, quantum dot 408 produces under the exciting of incident light has the light of different wave length with incident light.
Prior art is different from, multiple embedded bubbles 407 of the present embodiment can significantly increase light reflectivity, and quantum
Point 408 produces the light for having different wave length with incident light under the exciting of incident light, can improve the display of the emergent light of reflector plate 402
Colour gamut, so as to improve the display colour gamut of the backlight of backlight module 401, embedded bubble 407 and quantum dot 408 can reduce instead
Penetrate the thickness of piece 402.
Wherein, the quantum dot 408 of the present embodiment backlight module 401 is arranged in bubble 407, is improved backlight module 401 and is gone out
Penetrate the uniformity of light.Certainly, in other embodiments, quantum dot 408 can be completely or partially arranged at outside bubble 407.
Alternatively, the incident light of the present embodiment backlight module 401 is blue laser, and quantum dot 408 includes green quantum dot
And red quantum dot；Green quantum dot and red quantum dot produce green glow and feux rouges respectively under the exciting of blue light laser source.This
The emergent light of reflector plate 402 of embodiment is to form white light by blue laser, green glow, feux rouges colour mixture, and it has the advantages that high colour gamut.
The reflector plate 402 of the present embodiment can further include the second film layer (not indicating), be arranged at bubble layer 405
The surface of incident side, for scattering the emergent light of bubble layer 405, to improve the uniformity of the emergent light of backlight module 401.
The present invention further provides the backlight module of another embodiment, the backlight module disclosed in the present embodiment is in above-mentioned reality
Apply and be described on the basis of the backlight module of example.Referring to Fig. 5, under the backlight 502 of the present embodiment backlight module 501 is straight
Formula, i.e. backlight 502 are arranged on the incident side of light guide plate 503, and reflector plate 504 is arranged at the side of light guide plate 503, will be from leading
Light that the side of tabula rasa 503 transmits returns to light guide plate 503, and excites the light for having different wave length with backlight 502, with backlight
The light colour mixture in source 502 is into high colour gamut light.
Referring to Fig. 6, Fig. 6 is the schematic flow sheet of the embodiment of preparation method one of reflector plate of the present invention.The present embodiment system
Make the reflector plate that method is used to make above-described embodiment.The present embodiment preparation method specifically includes following steps：
Step 601：Bubble layer is set, wherein, bubble layer includes multiple embedded bubbles and quantum dot, and quantum dot is in incidence
The light that there is different wave length with incident light is produced under the exciting of light.
Quantum dot has exciting light spectrum width and continuously distributed, and therefore, the present embodiment preparation method passes through incident light booster dose
Son point generation is excited light, with incident light colour mixture into emergent light so that emergent light has high colour gamut advantage.Wherein, this implementation
The incident light of example is blue laser, and quantum dot includes green quantum dot and red quantum dot；Green quantum dot and red quantum dot
Green glow and feux rouges are produced under the exciting of blue light laser source, blue laser, green glow and feux rouges synthesize high colour gamut white light.
Step 602：The first film layer is set on the surface of the non-light incidence side of bubble layer, the first film layer is incident to for diffusing reflection
The incident light of reflector plate.
Not all incident light and light emission side can be reflected back by bubble layer by incident light activated light, pass through setting
First film layer, the light not being reflected back by bubble layer can be reflected, can further improve the light reflectivity of reflector plate.
Alternatively, the present embodiment preparation method still further comprises step 603：Formed on the surface of the light emission side of bubble layer
Second film layer, the second film layer is used for the emergent light for scattering bubble layer, to improve the uniformity of reflector plate emergent light.
Wherein, referring to Fig. 7, the step 601 of the present embodiment preparation method specifically includes：
Step 701：Quantum dot and foaming agent material are mixed, forms mixing material.
The quantum dot of the present embodiment includes core luminescent nanocrystal/shell luminescent nanocrystals and covering material；Core is luminous to be received
The composition of meter Jing Ti/shell luminescent nanocrystals includes cadmium selenide CdSe/ zinc sulphide ZnS, indium phosphide InP/ zinc sulphide ZnS, selenizing
Lead PbSe/ vulcanized lead PbS, cadmium selenide CdSe/ cadmium sulfides CdS, cadmium telluride CdTe/ cadmium sulfides CdS or cadmium telluride CdTe/ zinc sulphide
Any of ZnS or any is a variety of；Covering material is by methacrylic, phenylethylene, Tri- n -butyltin methacrylate, carbon
The combination copolymer resins that any of esters of gallic acid or any a variety of copolymerization obtain.
Foaming agent can be, but not limited to, the physical blowing agents such as nitrogen dioxide, carbon dioxide, or the chemistry such as ammonium hydrogencarbonate
Foaming agent.
Step 702：Base material is added in mixing material, and it is heated, melted and is kneaded, forms foaminess resin
Fused mass.Wherein, base material can be, but not limited to, PET, polypropylene etc..
Heating, melting and mixing processing procedure in the preparation method of the present embodiment to mixing material and PET material are being extruded
Carried out in machine.It is, of course, also possible to the inorganic fillers such as titanium oxide and foaming regulator are added in mixing material, it is specifically, first
First mixing material is mixed with titanium oxide, radiation curing, quantum dot is penetrated into titanium oxide, titanium oxide can improve reflector plate light
Reflectivity, can also be as the screen layer of quantum dot.
Step 703：Extrusion, stretching foaminess resin fused mass, form bubble layer.
Specifically, foaminess resin fused mass is imported in annular die, and extrusion foaming in an atmosphere, form tubular bubble
Body, finally the cylindric cooling device in the edge of tubular air bladder one (mandrel) is pulled while cutting so as to obtain bubble layer.
Prior art is different from, the quantum dot of the present embodiment produces under the exciting of incident light has different ripples from incident light
Long light, can improve the display colour gamut of reflector plate emergent light, and embedded bubble and quantum dot can reduce the thickness of reflector plate.
Embodiments of the present invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this
The equivalent structure or equivalent flow conversion that description of the invention and accompanying drawing content are made, or directly or indirectly it is used in other correlations
Technical field, it is included within the scope of the present invention.
Claims (10)
1. a kind of reflector plate, it is characterised in that the reflector plate is used to reflect incident light, comprises at least：
Bubble layer, including multiple embedded bubbles and quantum dot, the quantum dot generation and institute under the exciting of the incident light
Stating incident light has the light of different wave length；
First film layer, the surface of the non-light incidence side of the bubble layer is arranged at, for incident light described in diffusing reflection.
2. reflector plate according to claim 1, it is characterised in that the incident light is blue laser, the quantum dot bag
Include green quantum dot and red quantum dot, the green quantum dot and the red quantum dot difference under the exciting of the blue laser
Produce green glow and feux rouges.
3. reflector plate according to claim 1, it is characterised in that the quantum dot is arranged in the bubble.
4. reflector plate according to claim 1, it is characterised in that the reflector plate further comprises the second film layer, sets
In the surface of the light emission side of the bubble layer, for scattering the emergent light of the bubble layer.
5. reflector plate according to claim 1, it is characterised in that the quantum dot includes core luminescent nanocrystal/shell hair
Light nanocrystal and covering material；The composition of the core luminescent nanocrystal/shell luminescent nanocrystals includes CdSe/ZnS, InP/
Any of ZnS, PbSe/PbS, CdSe/CdS, CdTe/CdS or CdTe/ZnS or any are a variety of；The covering material be by
What any of methacrylic, phenylethylene, Tri- n -butyltin methacrylate, carbonates or any a variety of copolymerization obtained
Combine copolymer resins.
A kind of 6. backlight module, it is characterised in that including：Reflector plate described in any one of claim 1 to 5 and it is arranged at described
The incident light is reflexed to the light guide plate by the light guide plate of the light emission side of reflector plate, the reflector plate.
A kind of 7. preparation method of reflector plate, it is characterised in that including：
Bubble layer is set, wherein, the bubble layer includes multiple embedded bubbles and quantum dot, and the quantum dot is in the incidence
The light that there is different wave length with the incident light is produced under the exciting of light；
First film layer is set on the surface of the non-light incidence side of the bubble layer, and first film layer is incident to described for diffusing reflection
The incident light of reflector plate.
8. preparation method according to claim 7, it is characterised in that the incident light is blue laser, the quantum dot
Including green quantum dot and red quantum dot, the production under the exciting of the blue laser of the green quantum dot and red quantum dot
Raw green glow and feux rouges.
9. preparation method according to claim 7, it is characterised in that the setting bubble layer includes：
The quantum dot and foaming agent material are mixed, forms mixing material；
Base material is added in the mixing material, and it is heated, melted and is kneaded, forms foaminess resin fused mass；
Extrude, stretch the foaminess resin fused mass, form the bubble layer.
10. preparation method according to claim 7, it is characterised in that the preparation method further comprises：
The second film layer is formed on the surface of the light emission side of the bubble layer, for scattering the emergent light of the bubble layer.
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| CN201710561475.1A CN107420856B (en) | 2017-07-11 | 2017-07-11 | Reflector plate, manufacturing method thereof and backlight module |
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| CN201710561475.1A CN107420856B (en) | 2017-07-11 | 2017-07-11 | Reflector plate, manufacturing method thereof and backlight module |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108150968A (en) * | 2017-12-26 | 2018-06-12 | 中华映管股份有限公司 | Reflectance coating |
| WO2020093945A1 (en) * | 2018-11-09 | 2020-05-14 | 深圳Tcl新技术有限公司 | Side edge reflecting plate attaching process of light guide plate and light guide plate |
| CN111763346A (en) * | 2020-07-03 | 2020-10-13 | 武汉珈源同创科技有限公司 | Quantum dot optical function plate, preparation method thereof and backlight module |
| CN114675356A (en) * | 2022-02-23 | 2022-06-28 | 广东瑞捷光电股份有限公司 | Foaming diffusion plate and preparation method thereof |
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Address after: No.9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Patentee after: TCL Huaxing Photoelectric Technology Co.,Ltd. Address before: No.9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Patentee before: Shenzhen China Star Optoelectronics Technology Co.,Ltd. |