CN206805067U - Backlight module and display device - Google Patents
Backlight module and display device Download PDFInfo
- Publication number
- CN206805067U CN206805067U CN201720471499.3U CN201720471499U CN206805067U CN 206805067 U CN206805067 U CN 206805067U CN 201720471499 U CN201720471499 U CN 201720471499U CN 206805067 U CN206805067 U CN 206805067U
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- Prior art keywords
- quantum dot
- backlight module
- dot layer
- luminescence
- light
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- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 3
- 229910052700 potassium Inorganic materials 0.000 claims description 3
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Abstract
The utility model discloses a kind of backlight module and display device, wherein, the backlight module includes multiple luminescence components, and each luminescence component includes luminescence chip and covers in the printing opacity main part of the luminescence chip, and fluorescent material is additionally provided with the printing opacity main part；And some blooming pieces, wherein the surface of a blooming piece is provided with quantum dot layer, the light that the luminescence chip is sent passes through the blooming piece and quantum dot layer after the fluorescent material, produces white light.Backlight module cost of the present utility model is low and thermal reliability is good.
Description
Technical field
It the utility model is related to technical field of liquid crystal display, more particularly to a kind of backlight module and the application backlight module
Display device.
Background technology
As liquid crystal tv technology develops, display image quality requirement of the consumer to TV also steps up.In prior art
In, it can realize that superelevation colour gamut image quality is shown using technology of quantum dots, therefore the backlight in existing most backlight module makes
With quantum dot.As shown in figure 1, traditional quanta point material 2 exposes in atmosphere, easy oxidation deactivation, therefore it needs up and down
Quanta point material 2 is wrapped up using barrier flaps 1.This technology is more complicated, and cost is higher, leads to not obtain in liquid crystal display extensively
Using.Meanwhile quantum dot usage amount is larger in existing back light source structure, causes cost further to increase.
Utility model content
A purpose of the present utility model is to provide a kind of backlight module, it is intended to obtains that a kind of cost is low and thermal reliability is good
Backlight module.
To achieve these goals, the utility model proposes backlight module, including：Multiple luminescence components, it is each luminous
Component includes luminescence chip and covers in the printing opacity main part of the luminescence chip, and fluorescence is additionally provided with the printing opacity main part
Powder；And
Some folded blooming pieces set, wherein the surface of a blooming piece is provided with quantum dot layer, the luminescence chip is sent
Light pass through the printing opacity main part, the blooming piece and quantum dot layer, produce white light.
Preferably, the luminescence chip is blue-light LED chip, and the fluorescent material is red fluorescence powder, the quantum dot layer
For green quantum dot layer.
Preferably, the luminescence chip is blue-light LED chip, and the fluorescent material is green emitting phosphor, the quantum dot layer
For red quantum dot layer.
Preferably, the quantum dot layer, the quantum dot are provided with close to the surface of a blooming piece of the luminescence component
Aspect is to the luminescence component.
Preferably, the material of the quantum dot layer is perovskite.
Preferably, the material of the fluorescent material is potassium fluosilicate.
Preferably, the thickness range of the quantum dot layer is 0.08~0.15mm.
Preferably, in addition to circuit board, multiple uniform shapes of luminescence component are distributed in the circuit board.
Preferably, the optical wavelength range that the blue-light LED chip is sent is 445nm~455nm.
Another purpose of the present utility model is to propose a kind of display device, including backlight module as described above.
In technical solutions of the utility model, the light source of backlight module is through common again after printing opacity main part using luminescence chip
With the quantum dot layer excited on blooming piece, white light is produced.The quantum dot layer is directly arranged in the surface of blooming piece, it is not necessary to enters
Row encapsulation process, has simplified preparation technology, can improve production efficiency, reduce cost.The light that luminescence chip is sent excites fluorescence
After powder, directive blooming piece surface excitation quantum dot layer, heat can give out in time caused by the quantum dot layer being excited
Go, no encapsulating material blocks, so as to improve the thermal reliability of quantum dot layer.Meanwhile use luminescence chip excitated fluorescent powder and amount
Son point layer, compared with the structure of of excitation two amounts before point, so as to reduce the usage amount of quantum dot, can be obtained
To required white light, so as to further reduce cost.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to the structure shown in these accompanying drawings.
Fig. 1 is the sectional view of existing quantum dot material package；
Fig. 2 is the partial sectional view of the utility model backlight module.
Drawing reference numeral explanation：
Realization, functional characteristics and the advantage of the utility model purpose will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only part of the embodiment of the present utility model, rather than all
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belong to the scope of the utility model protection.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute in the utility model embodiment
It is only used for explaining relative position relation under a certain particular pose (as shown in drawings) between each part, motion conditions etc., such as
When the fruit particular pose changes, then directionality instruction also correspondingly changes therewith.
In addition, the description for being related to " first ", " second " etc. in the utility model is only used for describing purpose, without being understood that
To indicate or implying its relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ",
At least one this feature can be expressed or be implicitly included to the feature of " second ".
In the utility model, unless otherwise clearly defined and limited, term " connection ", " fixation " etc. should do broad sense reason
Solution, for example, " fixation " can be fixedly connected or be detachably connected, or integrally；Can mechanically connect, also may be used
Be electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, can be the connection of two element internals
Or the interaction relationship of two elements, limited unless otherwise clear and definite.For the ordinary skill in the art, can be with
Concrete meaning of the above-mentioned term in the utility model is understood as the case may be.
In addition, the technical scheme between each embodiment of the utility model can be combined with each other, but must be with ability
Domain those of ordinary skill can be implemented as basis, should recognize when the combination appearance of technical scheme is conflicting or can not realize
Combination for this technical scheme is not present, also not within the protection domain of the requires of the utility model.
The utility model proposes a kind of backlight module 10.
It refer to Fig. 2, the backlight module 10 of the embodiment of the utility model one, including：
Multiple luminescence components 11, each luminescence component 11 include luminescence chip 113 and cover in the printing opacity of luminescence chip 113
Main part 111, fluorescent material 115 is additionally provided with printing opacity main part 111；And
Some folded blooming pieces 15 set, wherein the surface of a blooming piece 15 is provided with quantum dot layer 17,
The light that luminescence chip 113 is sent passes through printing opacity main part 111, blooming piece 15 and quantum dot layer 17, produces white light.
In the present embodiment, the backlight of the backlight module 10 can be that side entering type is set or straight-down negative is set.Figure
Being set for straight-down negative shown in 2, luminescence component 11 region be directly facing blooming piece 15.The setting of printing opacity main part 111, both can be with
The light of luminescence chip 113 is passed through, protection can also be played a part of to luminescence chip 113.Optical film in backlight module 10
Piece 15 may include there is upper diffusion sheet, blast piece, lower diffusion sheet and prism film etc..Blooming piece 15 is used to send luminescence component 11
Light carry out corresponding modification so that the brightness being finally emitted is good and uniform.Close to the blooming piece 15 of luminescence component 11
Generally descend diffusion sheet.
In technical solutions of the utility model, the light source of backlight module 10 is to pass through printing opacity main part using luminescence chip 113
Excite the quantum dot layer 17 on blooming piece 15 after 111 jointly again, produce white light.The quantum dot layer 17 is directly arranged in blooming piece
15 surface, it is not necessary to be packaged processing, simplified preparation technology, production efficiency can be improved, reduce cost.Luminescence chip
After the 113 light excitated fluorescent powders 115 sent, the surface excitation quantum dot layer 17 of directive blooming piece 15, the quantum dot layer being excited
Heat caused by 17 can distribute in time, and no encapsulating material blocks, so as to improve the thermal reliability of quantum dot layer 17.Together
When, using the excitated fluorescent powder 115 of luminescence chip 113 and quantum dot layer 17, the structure with of excitation two amounts before point
Compare, so as to reduce the usage amount of quantum dot, required white light can be obtained, so as to further reduce cost.
Luminescence chip 113 of the present utility model includes a kind of coloured light chip in primaries, in an embodiment, hair
Optical chip 113 is blue-light LED chip, and fluorescent material 115 is red fluorescence powder, and quantum dot layer 17 is green quantum dot layer.
In the present embodiment, red fluorescence powder uniform ring can make it that caused red light distribution is uniform around blue-light LED chip.
White light can be formed after being mixed because of blue and green light with feux rouges primaries, blue light is sent using blue-light LED chip, it is excitated red
Fluorescent material produces feux rouges, then excites green quantum dot layer to produce green glow jointly again, and final three light mixing can obtain uniform
White light.Because the use of program Green quantum dot layer, can utilize quantum dot advantage, such as particle size it is controllable, point
Dissipate uniform.Transformation efficiency height, light efficiency height etc. are excited, so as to effectively improve the colour gamut of backlight module 10, meets high colour gamut liquid
The demand of crystalline substance display, significantly improves image quality display effect.In addition, the coloured light of quantum dot layer 17 is changed into now by former two kinds
Fluorescent material 115 and a kind of coloured light quantum dot layer 17, the usage amount of quantum dot can be greatly reduced, because of the raw material of quantum dot
Price is higher relative to fluorescent material, so the backlight module 10 of this structure can significantly reduce cost.
Preferably, when fluorescent material 115 is red fluorescence powder, the material of the fluorescent material can be potassium fluosilicate (K2SiF6),
The material is because of the characteristic of its own, and the red light pure color sent is very high, the green glow that can be sent with blue light and green quantum dot
With combination, shown so as to reach the quantum dot image quality of high colour gamut, significantly improve display effect.Certainly, fluorescent material 115 may be used also
To select other materials.
In an other embodiment, luminescence chip 113 is blue-light LED chip, and fluorescent material 115 is green emitting phosphor, quantum
Point layer 17 is red quantum dot layer.
In the present embodiment, blue-light LED chip sends blue light, excites green emitting phosphor to send green glow, then common excitated red
Quantum dot layer sends feux rouges, and three ultimately forms uniform white light.The embodiment also while high colour gamut liquid crystal display is ensured,
Reduce the usage amount of quantum dot, so as to which the cost of backlight module 10 can also be reduced.
Because of the luminous intensity highest of blue light in primaries, therefore in above two embodiment, entered using blue-light LED chip
Row excites, to ensure the luminous intensity of final emergent light.The wave-length coverage of blue light is 400nm to 480nm, in above two embodiment
In, it is 445nm~455nm to choose the optical wavelength range that blue-light LED chip is sent.The blue light of the wave-length coverage is ensureing laser hair
While intensity, the injury to human eye can also be reduced.
Preferably, the material of quantum dot layer 17 is perovskite.
In the present embodiment, quanta point material in quantum dot layer 17 quanta point material different from the past, perovskite quantum
Point not only has the excellent luminescent properties such as full spectral luminescence, quantum efficiency height, and the material has higher inoxidizability
Can so that quantum dot layer 17 is directly arranged on the surface of blooming piece 15, without using barrier flaps carry out every
The protection of water oxygen barrier, simplifies technique, so as to reduce cost.It is, of course, also possible to the quanta point material before use, the material
Material directly wraps up the Obstruct membrane of a floor height molecular material in the preparation, has the effect of water proof oxygen barrier, so as to be carried out with glue
Mixing, is then coated with that, on blooming piece 15, technique can also be simplified.
Fig. 2 is continued referring to, quantum dot layer 17, quantum dot are provided with close to the surface of a blooming piece 15 of luminescence component 11
Layer 17 is towards luminescence component 11.
In the present embodiment, quantum dot layer 17 is located at blooming piece 15, can make one is coated or formed by glue
Pasted after tunic.Specifically, quantum dot is by being coated on blooming piece 15, and quantum dot layer after being mixed with UV glue
Quantum dot in 17 is dispersed in UV glue.The blooming piece 15 nearest from luminescence component 11 is selected to coat quantum dot layer 17, can
To cause the direct excitation quantum point layer 17 of luminescence chip 113, so as to improve launching efficiency, and quantum dot can be reduced
Dosage, it is cost-effective.
In order that the white light intensity being finally emitted is evenly distributed, therefore by the thickness of the quantum dot layer 17 coated on blooming piece 15
Degree is arranged to uniform.In the present embodiment, the thickness range of quantum dot layer 17 is set to 0.08~0.15mm, the quantum dot layer of the scope
17 can both ensure to inspire enough monochromatic light, made the uniformity of white light that is finally emitted good, can save quantum dot again
Dosage.
In addition, backlight module 10 also includes circuit board 19, multiple luminescence components 11 are distributed in circuit board 19 in uniform shape.
In the present embodiment, the luminescence component 11 that is arranged to of circuit board 19 improves electricity and supported, can be with the circuit board 19
Set other be used for control component.Multiple luminescence components 11 are evenly arranged in circuit board 19, can make the backlight of offer
Source is uniform and stable, so that the luminous intensity being finally emitted is uniformly distributed in various pieces.
Certainly, the backlight of the backlight module 10 can be side entering type, specifically include light guide plate (not shown), and light group
Part 11 is adjacent to the end face of light guide plate, and for blooming piece 15 towards a surface of light guide plate, particular location is the top of light guide plate, is measured
Son point layer 17 is located at blooming piece 15 towards the surface of light guide plate.The setting of light guide plate can make the light of luminescence component more uniform
Directive blooming piece.
In addition, backlight module 10 is additionally provided with backboard (not shown) and fixed frame (not shown), fixed frame is fixed in backboard
Periphery, backboard can be sheet metal component, and plastics or metal material may be selected in fixed frame, and some blooming pieces 15 are mounted on solid
Determine frame.Specifically, fixed frame includes (not scheming perpendicular to the straight section (not shown) of backboard and along the construction section of straight section bending extension
Show), the straight section is collectively forming an installing space (not shown) with construction section and backboard, and luminescence component 11 and light guide plate are installed on
The installing space, stabilized structure.Radiating piece is additionally provided between luminescence component 11 and fixed frame, light guide plate and backboard, the radiating
The material of part is aluminium, good heat conductivity, easy processing, in time can be distributed the heat that luminescence component 11 is sent, and is ensured
The service life and service behaviour of the luminescence component 11.Quantum dot layer 17 located at blooming piece 15 towards the surface of light guide plate, just
In exciting, and launching efficiency can be improved.Fixed frame is black towards being additionally provided between the surface of light guide plate and the upper surface of light guide plate
Coloring agent bar (not shown), for pushing down light guide plate, play a part of being fixedly secured light guide plate, while be also possible to prevent light leak.
Backlight module 10 can also include reflector plate (not shown), and reflector plate is attached at light guide plate and deviates from blooming piece 15
A surface, the end abutment luminescence component 11 of reflector plate.The base material material of reflector plate is generally polyethylene terephthalate
Ester (PET), reflector plate is set in the lower surface of light guide plate, unscattered light reflection can be again introduced into light conducting region, i.e.,
Projected into light guide plate, and from light guide plate towards the surface of blooming piece 15, reflector plate is reflected into mirror-reflection, to improve hair
The utilization rate of optical assembly 11.Meanwhile the end abutment luminescence component 11 of reflector plate, the light that luminescence component 11 dissipates can also be entered
Row reflection, so as to further improve the utilization rate of light.
Another purpose of the present utility model is to propose a kind of display device (not shown), including the back of the body as described above
Optical mode group 10.Because the backlight module 10 of display device employs whole technical schemes of above-mentioned all embodiments, therefore at least
With all beneficial effects caused by the technical scheme of above-described embodiment, this is no longer going to repeat them.
In the present embodiment, display device also includes display panel (not shown), and display panel is liquid crystal display panel 30, its
Substrate is glass material.Specifically, display panel is set on the construction section of fixed frame with the parallel interval of blooming piece 15,
And blooming piece 15 is completely covered, so that the light that backlight module 10 is sent all is emitted by display panel, improve picture matter
Amount.In order to fix backlight module 10 and display panel, display device is additionally provided with front frame, and the front frame is metal material, ensures display
The stability of apparatus structure.
Preferred embodiment of the present utility model is the foregoing is only, not thereby limits the scope of the claims of the present utility model,
Every equivalent structure change under inventive concept of the present utility model, made using the utility model specification and accompanying drawing content
Change, or directly/be used in other related technical areas indirectly and be included in scope of patent protection of the present utility model.
Claims (10)
- A kind of 1. backlight module, it is characterised in that including：Multiple luminescence components, each luminescence component include luminescence chip and cover in the printing opacity main part of the luminescence chip, institute State in printing opacity main part and be additionally provided with fluorescent material；AndSome folded blooming pieces set, wherein the surface of a blooming piece is provided with quantum dot layer, the light that the luminescence chip is sent Through the printing opacity main part, the blooming piece and quantum dot layer, white light is produced.
- 2. backlight module as claimed in claim 1, it is characterised in that the luminescence chip is blue-light LED chip, the fluorescence Powder is red fluorescence powder, and the quantum dot layer is green quantum dot layer.
- 3. backlight module as claimed in claim 1, it is characterised in that the luminescence chip is blue-light LED chip, the fluorescence Powder is green emitting phosphor, and the quantum dot layer is red quantum dot layer.
- 4. backlight module as claimed in claim 1, it is characterised in that close to the surface of a blooming piece of the luminescence component Provided with the quantum dot layer, the quantum dot layer is towards the luminescence component.
- 5. backlight module as claimed in claim 1, it is characterised in that the material of the quantum dot layer is perovskite.
- 6. backlight module as claimed in claim 2, it is characterised in that the material of the fluorescent material is potassium fluosilicate.
- 7. the backlight module as described in claim 1 to 6 is any, it is characterised in that the thickness range of the quantum dot layer is 0.08~0.15mm.
- 8. backlight module as claimed in claim 7, it is characterised in that also uniform including circuit board, multiple luminescence components Shape is distributed in the circuit board.
- 9. backlight module as claimed in claim 2 or claim 3, it is characterised in that the optical wavelength model that the blue-light LED chip is sent Enclose for 445nm~455nm.
- 10. a kind of display device, it is characterised in that including the backlight module as described in any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720471499.3U CN206805067U (en) | 2017-04-28 | 2017-04-28 | Backlight module and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720471499.3U CN206805067U (en) | 2017-04-28 | 2017-04-28 | Backlight module and display device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110579905A (en) * | 2019-02-22 | 2019-12-17 | 友达光电股份有限公司 | Display device |
| US10686020B2 (en) | 2018-11-16 | 2020-06-16 | Ford Global Technologies, Llc | Perovskite illuminated vehicle control surfaces |
| TWI712843B (en) * | 2019-02-22 | 2020-12-11 | 友達光電股份有限公司 | Display apparatus |
| CN113130458A (en) * | 2019-12-31 | 2021-07-16 | Tcl集团股份有限公司 | Light-emitting unit, backlight structure, display panel and manufacturing method of light-emitting source |
-
2017
- 2017-04-28 CN CN201720471499.3U patent/CN206805067U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10686020B2 (en) | 2018-11-16 | 2020-06-16 | Ford Global Technologies, Llc | Perovskite illuminated vehicle control surfaces |
| CN110579905A (en) * | 2019-02-22 | 2019-12-17 | 友达光电股份有限公司 | Display device |
| TWI691765B (en) * | 2019-02-22 | 2020-04-21 | 友達光電股份有限公司 | Display apparatus |
| TWI712843B (en) * | 2019-02-22 | 2020-12-11 | 友達光電股份有限公司 | Display apparatus |
| CN113130458A (en) * | 2019-12-31 | 2021-07-16 | Tcl集团股份有限公司 | Light-emitting unit, backlight structure, display panel and manufacturing method of light-emitting source |
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