CN209215806U - A kind of backlight module - Google Patents
A kind of backlight module Download PDFInfo
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- CN209215806U CN209215806U CN201822074900.7U CN201822074900U CN209215806U CN 209215806 U CN209215806 U CN 209215806U CN 201822074900 U CN201822074900 U CN 201822074900U CN 209215806 U CN209215806 U CN 209215806U
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- backlight module
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Abstract
The utility model discloses a kind of backlight modules, wherein excites and issue the quantum dot diaphragm of red, green, blue three coloured light including purple light chip LED and by purple light chip LED；The quantum dot diaphragm includes lower substrate, lower barrier layer, RGB quanta point material layer, upper barrier layer and the upper substrate of lamination setting from the bottom to top, the lower substrate is used to support lower barrier layer, the upper substrate is covered on barrier layer, the RGB quanta point material layer is located between the lower barrier layer and upper barrier layer, and encapsulates RGB quanta point material layer by the lower barrier layer and upper barrier layer.The utility model solves in prior art backlight module, and being easy to produce by the way of blue chip excitated fluorescent powder has the problem of biggish irreversible injury to human eye.
Description
Technical field
The utility model relates to quantum dot encapsulation technology field more particularly to a kind of use purple light chip LED excitation are bluish-green
The backlight module of red quantum dot.
Background technique
LED is widely used to backlight, illumination due to many excellent characteristics such as high with light efficiency, the service life is long, performance stabilizations
Equal fields.It is final to realize blending for white light generally by the way of blue chip excitated fluorescent powder in the application of TV backlight
Light.Some researches show that, shortwave blue lights to have a biggish irreversible injury for human eye, and the peak wavelength one that blue chip is luminous
As in 450nm or so, and spike energy is very strong, is placed exactly in and injures biggish blue light wavelength region to human eye.
Quantum dot has a wide characteristic for absorbing narrow transmitting, and peak luminous wavelength can with the change of quantum dot size and
Change, the final high colour gamut that the full spectrum of covering can be achieved is shown.Quantum dot is excited, wavelength is shorter, and launching efficiency is higher, i.e.,
The purple light chip of short wavelength has higher launching efficiency than blue chip.Most economical quantum dot application mode is by quantum dot
It is packaged in LED, but at present under technology, since quantum dot is extremely sensitive to substances such as water oxygens, is easy to lose under the invasion such as water oxygen
Effect, therefore be applied in LED and need to carry out more complicated water oxygen barrier design.
Therefore, the existing technology needs to be improved and developed.
Utility model content
The technical problem to be solved by the present invention is in view of the above drawbacks of the prior art, provide a kind of backlight mould
Group, it is intended to solve in prior art backlight module, being easy to produce by the way of blue chip excitated fluorescent powder has human eye
The problem of biggish irreversible injury.
The utility model technical scheme applied to solve the technical problem is as follows:
A kind of backlight module, wherein excited including purple light chip LED and by purple light chip LED and issue red, green, blue three
The quantum dot diaphragm of coloured light；
The quantum dot diaphragm includes lower substrate, the lower barrier layer, RGB quanta point material of lamination setting from the bottom to top
Layer, upper barrier layer and upper substrate, the lower substrate are used to support lower barrier layer, and the upper substrate is covered on barrier layer, institute
It states RGB quanta point material layer to be located between the lower barrier layer and upper barrier layer, the lower barrier layer and upper barrier layer are used
In the encapsulation RGB quanta point material layer.
The backlight module, wherein the quantum dot diaphragm further includes being laid on the outside of upper substrate and for realizing expansion
Dissipate several prism structures of function.
The backlight module, wherein the prism structure is isosceles square.
The backlight module, wherein the RGB quanta point material layer includes the blue set gradually from the bottom to top
Quantum dot layer, green quantum dot layer and red quantum dot layer.
The backlight module, wherein bluish-green red lateral size of dots size exists in the RGB quanta point material layer
Between 1-20nm.
The backlight module, wherein blue light quantum point size diameter is 1-4nm, and green light quantum point diameter dimension is 3-
6nm, red light quantum point diameter dimension is preferably in 5-10nm.
The backlight module, wherein when the backlight module is side entering type, the backlight module further includes a leaded light
Plate, the purple light chip LED are set to light guide plate side, and the quantum dot diaphragm is set on the upside of light guide plate；
When the backlight module is straight-down negative, the backlight module further includes a straight-down negative reflector plate structure, the purple
Optical chip LED is set to the bottom of the straight-down negative reflector plate structure, and the quantum dot diaphragm is set to the straight-down negative reflection
On the upside of chip architecture.
The backlight module, wherein when the backlight module is side entering type, the backlight module further includes being provided with
The reflector plate of light guide plate bottom side and the diffusion sheet being set on the upside of quantum dot diaphragm, blast piece, reflective polarizers, compound film sheet
One of or it is a variety of；When the backlight module is straight-down negative, the backlight module further includes being set on quantum dot diaphragm
One of diffusion sheet, blast piece, reflective polarizers and compound film sheet of side are a variety of.
The utility model has the advantages that the utility model using purple light chip LED as quantum dot excitaton source, and by bluish-green red quantum dot material
Material is packaged in optical diaphragm, purple light excited bluish-green red quantum dot light emitting, can not only be imitated than blue chip with higher excitation
Rate, then realize that the high colour gamut of quantum dot is shown, injury of the shortwave blue light to human eye is also effectively reduced, solves prior art backlight mould
In group, being easy to produce by the way of blue chip excitated fluorescent powder has the problem of biggish irreversible injury to human eye.
Detailed description of the invention
Fig. 1 be backlight module described in the utility model be side entering type when overall structure diagram；
Fig. 2 be backlight module described in the utility model be straight-down negative when overall structure diagram；
Fig. 3 is the structural schematic diagram of quantum dot diaphragm described in the utility model；
Fig. 4 is the preferred embodiment structural schematic diagram of quantum dot diaphragm described in the utility model；
Fig. 5 is the another preferred embodiment structural schematic diagram of quantum dot diaphragm described in the utility model.
Specific embodiment
To keep the purpose of this utility model, technical solution and advantage clearer, clear, develop simultaneously implementation referring to the drawings
The utility model is further described in example.It should be appreciated that specific embodiment described herein is only used to explain this reality
With novel, it is not used to limit the utility model.
Backlight module described in the utility model can be divided into side entering type and straight-down negative.
When the backlight module is side entering type, referring to Fig. 1, including 10 He of purple light chip LED using purple light chip
Quantum dot diaphragm 20；Further include a light guide plate 30, the capable of emitting purple light light source of the purple light chip LED 10, setting and light guide plate
30 sides, the quantum dot diaphragm 20 is set to 30 upside of light guide plate, in this way by the switching of light guide plate 30 to realize by adopting
With the RGB quantum dot light emitting in the LED10 excitation quantum dot diaphragm 20 of purple light chip, shown in the realization high colour gamut of quantum dot
While, injury of the shortwave blue light to human eye is effectively reduced.It specifically, is preferably effectively luminous and light-out effect, the back
Optical mode group further includes the optical diaphragm 50 for being provided with the reflector plate 40 of 30 bottom side of light guide plate and being set on the upside of quantum dot diaphragm,
One of diffusion sheet that the optical diaphragm 50 includes, blast piece, reflective polarizers, compound film sheet are a variety of.
When the backlight module is side entering type, referring to Fig. 2, including purple light chip LED 10 and quantum dot diaphragm 20；Also
Including a straight-down negative reflector plate structure 60, the purple light chip LED 10 is set to the bottom of the straight-down negative reflector plate structure 60,
The quantum dot diaphragm 20 is set to 60 upside of straight-down negative reflector plate structure.Pass through straight-down negative reflector plate structure 60 in this way
The RGB quantum dot light emitting in the LED excitation quantum dot diaphragm by using purple light chip can be realized in transmitting effect, in reality
While the existing high colour gamut of quantum dot is shown, injury of the shortwave blue light to human eye is effectively reduced.It specifically, is preferably effectively luminous
And light-out effect, the backlight module further include the optical diaphragm 50 being set on the upside of quantum dot diaphragm, the optical diaphragm 50
Including one of diffusion sheet, blast piece, reflective polarizers and compound film sheet or a variety of.It is further preferred that in straight-down negative reflector plate
Diffuser plate 70 is additionally provided between structure 60 and quantum dot diaphragm 20.
Preferably, as shown in figure 3, in the backlight module, quantum dot diaphragm 20 includes lamination setting from the bottom to top
Lower substrate 21, lower barrier layer 22, RGB quanta point material layer 23, upper barrier layer 24 and upper substrate 25, the lower substrate 21 are used
In supporting lower barrier layer 22, the upper substrate 25 is covered on barrier layer 24, i.e., plays branch using lower substrate 21 and upper substrate 25
Support effect, it is of course also possible to play certain water oxygen barrier action；The RGB quanta point material layer 23 be located in it is described under
Between barrier layer 22 and upper barrier layer 24, and the RGB quantum dot is encapsulated by the lower barrier layer 22 and upper barrier layer 24
Material layer 23.Preferably, the material of the lower substrate 21 and upper substrate 25 is polyethylene terephthalate.The lower barrier
Layer 22 and upper barrier layer 24 are made then for obstructing water oxygen of water oxygen barrier material；Preferably, the lower barrier layer 22 and upper
The material of barrier layer 24 is SiO2、TiO2、BaSO4、Al2O3、CaCO3, polymethyl methacrylate (PMMA), acrylic nitrile-butadiene two
One of alkene-styrol copolymer (ABS), polystyrene (PS), polyurethane (PU), organosilicon polymer are a variety of.
Include in quantum dot diaphragm 20 in the backlight module red light quantum point material, green light quantum point material and
Blue light quantum point material, it is preferable that the quanta point material of above-mentioned three kinds of light be include CdSe, CdTe, MgS, MgSe, MgTe,
In CaS, CaSe, CaTe, SrS, SrSe, SrTe, BaS, BaSe, BaTe, ZnS, ZnSe, ZnTe and CdS any one
First kind compound, or being includes dioxins of any one in GaN, GaP, GaAs, InN, InP and InAs,
Or being includes hybrid inorganic-organic perovskite (chemical formula CH3NH3PbX3, X=Cl, Br, I) material third class
Object is closed, or is the 4th class chemical combination for including full-inorganic perovskite caesium lead halogen quantum dot (chemical formula CsPbX3, X=Cl, Br, I)
Object, or be a variety of packets in the first compound and/or second compound and/or third compound and/or fourth compound
Cover the core-shell structure compound or Doped nanocrystal to be formed.Preferably, bluish-green red quantum dot size preferably 1-20nm it
Between, blue light quantum point size diameter is preferably in 1-4nm, and for green quantum spot size preferably in 3-6nm, red quantum spot size is preferred
In 5-10nm.The blue light peak wavelength inspired is between 450-480nm, and preferably 460nm or more, green light peak wavelength is in 520-
Between 560nm, red light peak wavelength is between 610-660nm.
In addition, having the quantum-dot structure of high-barrier coefficient according to itself, then barrier layer 22 and upper barrier layer 24 are descended
It can cancel.In the utility model, the ratio of RGB quantum dot carrys out allotment ratio according to colour temperature needed for final display, and excellent
It selects quanta point material all to absorb purple light, i.e., does not include purple light spectrum in outgoing spectrum.
Preferably, as shown in figure 4, in the backlight module, the RGB quanta point material layer 23 include by down toward
On the blue quantum dot layer 231, green quantum dot layer 232 and the red quantum dot layer 233 that set gradually, i.e., using layering quantum dot
Structure, in this kind of structure, blue quantum dot layer 231 is located at lowest level, and green quantum dot layer 232 is located at middle layer, red quantum
Point layer 233 is located at top layer, and since quantum dot absorbs the characteristic of shortwave excitation long wave, the light that lower layer's quantum dot issues will be further
One layer of quantum dot is excited, to further promote launching efficiency.
In addition, the RGB quanta point material layer may include the UV solidification of bluish-green red three kinds of quanta point materials and doping
Glue, diffusion particle (not shown).
Because quantum dot diaphragm 20 described in the utility model both can be used as the use of quantum dot diaphragm, expansion can also be used as
It falls apart use, bluish-green red quantum dot can be coated in diaphragm or diffuser plate.Preferably, as shown in figure 5, by the amount
Son point diaphragm 20 is as diffuser plate in use, the quantum dot diaphragm further includes being laid in 25 outside of upper substrate and for realizing expansion
Dissipate several prism structures 26 of function, the preferably prism structure of apex angle upward.The structure can make quantum dot diaphragm in reality
While showing traditional diffusion function, further achieve the effect that increment.Prism vertex angle structure 26 is preferably right angle isosceles row.Separately
Outside, the material of prism vertex angle structure 26 is preferably then spreading plate stretching when for PS with the consistent material of 25 material of upper substrate
Before uncured afterwards, the micro-structure of prism vertex angle is directly imprinted out with the idler wheel carved on 25 surface of upper substrate；Prism vertex angle knot
The material of structure 26 can also be UV glue, after diffuser plate solidification, UV glue be coated on 25 surface of upper substrate, then with the idler wheel carved
Prism structure is imprinted out, then UV solidifies to obtain prism vertex angle structure 26.
In addition, using quantum dot diaphragm described in the utility model as diffuser plate in use, quantum dot diaphragm 20 it is total
Thickness is in 1mm or more or even 3mm, and lower substrate 21 and upper substrate 25 are using PS and control is in 0.5mm or thicker, for water
The barriering effect of oxygen can be more preferable than optical diaphragm.
Backlight module described in the utility model can be applied to the backlight displays such as TV, mobile phone, plate, computer field.
In conclusion backlight module provided by the utility model, using purple light chip LED as quantum dot excitaton source, and
Bluish-green red quanta point material is packaged in optical diaphragm, purple light excited bluish-green red quantum dot light emitting can not only compare blue chip
It with higher launching efficiency, then realizes that the high colour gamut of quantum dot is shown, injury of the shortwave blue light to human eye is also effectively reduced, solve
In prior art backlight module, be easy to produce by the way of blue chip excitated fluorescent powder to human eye have it is biggish can not
The problem of inverse injury.
It should be understood that the application of the utility model is not limited to above-mentioned citing, those of ordinary skill in the art are come
It says, it can be modified or changed according to the above description, and all these modifications and variations all should belong to the appended power of the utility model
The protection scope that benefit requires.
Claims (8)
1. a kind of backlight module, which is characterized in that including purple light chip LED and by purple light chip LED excite and issue it is red, green,
The quantum dot diaphragm of blue three color light；
The quantum dot diaphragm include the lower substrate being stacked from bottom to top, lower barrier layer, RGB quanta point material layer, on
Barrier layer and upper substrate, the lower substrate support lower barrier layer, and the upper substrate is covered on barrier layer, the RGB amount
Son point material layer is located between the lower barrier layer and upper barrier layer, and encapsulates institute by the lower barrier layer and upper barrier layer
State RGB quanta point material layer.
2. backlight module according to claim 1, which is characterized in that the quantum dot diaphragm further includes being laid in upper substrate
Outside and several prism structures for realizing diffusion function.
3. backlight module according to claim 2, which is characterized in that the prism structure is isosceles square.
4. backlight module according to claim 2, which is characterized in that the RGB quanta point material layer include by down toward
On the blue quantum dot layer, green quantum dot layer and the red quantum dot layer that set gradually.
5. backlight module according to claim 4, which is characterized in that bluish-green red amount in the RGB quanta point material layer
Sub- spot diameter size is between 1-20nm.
6. backlight module according to claim 4, which is characterized in that blue light quantum point size diameter is 1-4nm, green light amount
For sub- spot diameter having a size of 3-6nm, red light quantum point diameter dimension is 5-10nm.
7. backlight module described in -6 any one according to claim 1, which is characterized in that when the backlight module is side entering type
When, the backlight module further includes a light guide plate, and the purple light chip LED is set to light guide plate side, the quantum dot diaphragm
It is set on the upside of light guide plate；
When the backlight module is straight-down negative, the backlight module further includes a straight-down negative reflector plate structure, the purple light core
Piece LED is set to the bottom of the straight-down negative reflector plate structure, and the quantum dot diaphragm is set to the straight-down negative reflector plate knot
On the upside of structure.
8. backlight module according to claim 7, which is characterized in that when the backlight module is side entering type, the back
Optical mode group further include be provided with the reflector plate of light guide plate bottom side and be set on the upside of quantum dot diaphragm diffusion sheet, blast piece,
One of reflective polarizers, compound film sheet are a variety of；When the backlight module is straight-down negative, the backlight module further includes
It is set to one of diffusion sheet, blast piece, reflective polarizers and compound film sheet on the upside of quantum dot diaphragm or a variety of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822074900.7U CN209215806U (en) | 2018-12-11 | 2018-12-11 | A kind of backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822074900.7U CN209215806U (en) | 2018-12-11 | 2018-12-11 | A kind of backlight module |
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| Publication Number | Publication Date |
|---|---|
| CN209215806U true CN209215806U (en) | 2019-08-06 |
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|---|---|---|---|
| CN201822074900.7U Active CN209215806U (en) | 2018-12-11 | 2018-12-11 | A kind of backlight module |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110908182A (en) * | 2019-11-11 | 2020-03-24 | 东莞市仲磊光电材料有限公司 | Quantum dot optical sheet with wide color gamut and preparation method thereof |
| CN111240095A (en) * | 2020-03-12 | 2020-06-05 | Tcl华星光电技术有限公司 | Backlight module and display panel |
| CN111679493A (en) * | 2020-05-29 | 2020-09-18 | 太湖金张科技股份有限公司 | Backlight module with blue light conversion reflection film and liquid crystal display panel |
-
2018
- 2018-12-11 CN CN201822074900.7U patent/CN209215806U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110908182A (en) * | 2019-11-11 | 2020-03-24 | 东莞市仲磊光电材料有限公司 | Quantum dot optical sheet with wide color gamut and preparation method thereof |
| CN111240095A (en) * | 2020-03-12 | 2020-06-05 | Tcl华星光电技术有限公司 | Backlight module and display panel |
| CN111679493A (en) * | 2020-05-29 | 2020-09-18 | 太湖金张科技股份有限公司 | Backlight module with blue light conversion reflection film and liquid crystal display panel |
| CN111679493B (en) * | 2020-05-29 | 2022-10-21 | 太湖金张科技股份有限公司 | Backlight module with blue light conversion reflecting film and liquid crystal display panel |
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