CN209707723U - A kind of backlight module and liquid crystal display - Google Patents
A kind of backlight module and liquid crystal display Download PDFInfo
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- CN209707723U CN209707723U CN201920103851.7U CN201920103851U CN209707723U CN 209707723 U CN209707723 U CN 209707723U CN 201920103851 U CN201920103851 U CN 201920103851U CN 209707723 U CN209707723 U CN 209707723U
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- quantum dot
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- backlight module
- liquid crystal
- glass substrate
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Abstract
The utility model relates to a kind of backlight module and liquid crystal displays, wherein backlight module includes light source, optical diaphragm group and the straight-down negative quantum dot diffuser plate being arranged between light source and optical diaphragm group, the straight-down negative quantum dot diffuser plate includes quantum dot layer, glass substrate and encapsulated layer, and quantum dot layer is arranged between encapsulated layer and glass substrate.The utility model improves diffuser plate rigidity, reduces the coefficient of expansion, realize that backlight module is thinned for solving the problems, such as that existing diffuser plate is easily-deformable and the coefficient of expansion is big.
Description
Technical field
The utility model belongs to field of display technology, and in particular to a kind of backlight module and liquid crystal display.
Background technique
Generally, down straight aphototropism mode set includes backboard, LED light, lens, diffuser plate, optical diaphragm group, is set to diffuser plate
The glue frame of surrounding, LED light, lens are fixed on backboard by heat-conducting glue band, and optical diaphragm group is fixed also by shading double-sided adhesive
In glue frame, diffuser plate is arranged above LED light, is used to support between optical diaphragm group and each LED light and diffuser plate and is all provided with
It is equipped with a lens.Wherein, diffuser plate major function is to scatter incident light sufficiently, realizes softer, uniform radiation response.
Since quantum dot has, luminescent spectrum is adjustable, half-peak width, high luminous efficiency and other features, to apply in liquid crystal
Show the display colour gamut that liquid crystal display can be significantly promoted in device.The amount of being widely used in the high-end backlight of liquid crystal display at present
It is sub-, mainly it is that quanta point material is encapsulated in diaphragm, makes quantum dot film, but quantum dot is due to encountering steam or oxygen
Gas can fail, it is therefore desirable to promote quantum dot film in the water oxygen barrier layer of increase up and down of quantum dot layer to obstruct steam and oxygen
Long term reliability.The structure of quantum dot film is sandwich structure at present, has water oxygen in the two sides up and down of quantum dot layer
Barrier layer, general water oxygen barrier layer be first attached to polyethylene terephthalate (Polyethylene terephthalate,
Abbreviation PET) on film, quantum dot layer is coated on PET and water oxygen barrier layer, after the completion of coating, with another PET and barrier
The composite membrane of layer is protected.General PET and water oxygen barrier layer with a thickness of 100 μm, quantum dot layer is 100 μm.
In common down straight aphototropism mode set, quantum dot film is arranged between diffuser plate and optical diaphragm group, diffuser plate branch
Quantum dot film and optical diaphragm group are supportted, and plays the role of light diffusion, the light uniform irradiation for enabling plurality of LEDs lamp to be emitted exists
On quantum dot film.But existing diffuser plate is generally polycarbonate (Polycarbonate, abbreviation PC), rigidity is small, is used for big ruler
It can generate severely deformed when very little backlight module (such as 55 cun or more), cause light-emitting uniformity poor, and the coefficient of expansion is opposite
Greatly, so that designing needs when backlight module, there are gap surplus (such as 3% gaps) on length and width direction, to prevent swollen
It is swollen, it is difficult to realize that backlight module is thinned.
Utility model content
The utility model provides a kind of backlight module and liquid crystal display, easily-deformable and expand for solving existing diffuser plate
The big problem of coefficient improves diffuser plate rigidity, reduces the coefficient of expansion, realizes that backlight module is thinned.
In order to solve the above-mentioned technical problem, the utility model proposes following technical solutions to be resolved:
A kind of backlight module, including light source and optical diaphragm group, which is characterized in that further include being arranged in light source and optical film
Straight-down negative quantum dot diffuser plate between piece group, the straight-down negative quantum dot diffuser plate include quantum dot layer, encapsulated layer and glass base
Plate, the quantum dot layer are arranged between the encapsulated layer and the glass substrate,
Uniform by the light of glass substrate in order to guarantee, the glass substrate is arranged to frosted far from the surface of quantum dot layer
Surface.
In order to which the light beam after preferably spreading glass substrate further scatters, in the glass substrate and the quantum dot
Diffusion layer is provided between layer.
Further, the diffusion layer includes scattering particles.
Destruction in order to avoid quantum dot layer by steam or oxygen, the encapsulated layer include PET base material and water oxygen barrier
Layer, the water oxygen barrier layer are attached to the PET base material close to the surface of the quantum dot layer.
Another alternative in order to avoid quantum dot layer by the destruction of steam or oxygen, the encapsulated layer are
The composite layer of PET base material and water oxygen barrier layer.
Further, the quanta point material in the quantum dot layer includes red quantum dot material and green quantum dot material
Material.
Further, the thickness of the glass substrate is less than 1.5 millimeters.
The utility model further relates to a kind of liquid crystal display, which is characterized in that including liquid crystal display panel and back as described above
Optical mode group, the liquid crystal display panel are oppositely arranged with the backlight module, and the light-emitting surface of the backlight module is towards the liquid crystal
Panel.
Compared with prior art, the advantages of the utility model and beneficial effect is: encapsulated layer, quantum dot layer and glass substrate
Successively arrangement forms straight-down negative quantum dot diffuser plate up and down, and since glass substrate has, rigidity is big, flatness is good and hinders water oxygen
Every the advantages of, one layer of water oxygen barrier film and PET base material only are set in the upper surface of quantum dot layer, backlight module, and glass is thinned
Substrate expansion coefficient is small, avoids reserving larger expansion space, further be thinned convenient for backlight module.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be practical to this
New embodiment or attached drawing needed to be used in the description of the prior art are made one and are briefly introduced, it should be apparent that, it is described below
Attached drawing is some embodiments of the utility model, for those of ordinary skill in the art, is not being made the creative labor
Under the premise of, it can also be obtained according to these attached drawings other accompanying drawings.
Fig. 1 is the structure chart of the first embodiment of straight-down negative quantum dot diffuser plate in the utility model backlight module；
Fig. 2 is the structure chart of the second embodiment of straight-down negative quantum dot diffuser plate in the utility model backlight module；
Fig. 3 is the structure chart of the embodiment of the backlight module of the utility model.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to
The range of the utility model protection.
In the prior art, since common diffuser plate uses PC plastic, rigidity is small, easily-deformable, cannot function well as branch
The effect of quantum dot layer and optical diaphragm group is supportted, and the optical uniformity of deformed diffuser plate diffusion is poor, and common diffuser plate
The coefficient of expansion is relatively large, needs on length and width direction to prevent expansion, to cause to carry on the back there are gap surplus when designing backlight module
Optical mode group thickness becomes larger.To solve the above-mentioned problems, the utility model relates to a kind of backlight modules, including light source, optical diaphragm
Group and the straight-down negative quantum dot diffuser plate being arranged between light source and optical diaphragm group, the straight-down negative quantum dot diffuser plate include amount
Son point layer, glass substrate and encapsulated layer, quantum dot layer are arranged between encapsulated layer and glass substrate.
Specifically, as shown in Figure 1, in the first embodiment, straight-down negative quantum dot diffuser plate 10 includes quantum dot layer 11, envelope
Layer 12 and glass substrate 13 are filled, encapsulated layer 12 and glass substrate 13 all have the effect of barrier steam and oxygen, avoid outside water
Vapour and oxygen influence the luminescent properties of quanta point material, and the present embodiment encapsulated layer 12 includes PET base material 121 arranged up and down and water
Oxygen barrier layer 122, normally due to 122 thinner thickness of water oxygen barrier layer (such as several microns), therefore first by water oxygen barrier layer 122
(such as utilizing optics viscose) is attached in PET base material 121, and the encapsulated layer 122 then formed is pasted with quantum dot layer 11 again
It is attached.The thickness of the present embodiment glass substrate 13 is less than 1.5 millimeters, and the surface far from quantum dot layer 11 is (such as shown in Fig. 1
Lower surface 131) it is arranged to matte surface, after the light source at difference is radiated at lower surface 131, by the expansion of lower surface 131
Effect is dissipated, glass substrate 13 is made to become a more uniform area source, such as blue-ray LED can be equal by the glass substrate 13
It is even to be radiated on quantum dot layer 11, improve the coloration and brightness uniformity of final light out.Wherein, quantum dot layer 11 is provided with red
Quanta point material and green quanta point material, red quantum dot material are about 620nm to 640nm by blue light excitation emission wavelength,
And it is about 520nm to 540nm that green quanta point material, which is excited sending wavelength by blue light,.
As shown in Fig. 2, in a second embodiment, encapsulated layer 12 is PET base material and the composite layer that water oxygen barrier layer is formed, use
In protecting destruction of the quantum dot layer 11 not by steam and oxygen.The thickness of the present embodiment glass substrate 13 is and remote less than 1.5 millimeters
Surface (such as lower surface 131 shown in Figure 2) from quantum dot layer 11 is arranged to matte surface, and the light source at difference shines
It penetrates behind lower surface 131, by the diffusion of lower surface 131, glass substrate is made to become a more uniform area source, example
As blue-ray LED can improve the coloration and brightness of final light out by 13 uniform irradiation of glass substrate on quantum dot layer 11
Uniformity.In addition, being folded with diffusion layer 14 between quantum dot layer 11 and glass substrate 13, which includes heat dissipation grain
Sub (such as titanium dioxide, zinc oxide, calcium oxide etc.), for the light being emitted from glass substrate 13 further to be scattered, thus
Uniformity of the blue light illumination on quantum dot layer 11 is improved, also, the material of diffusion layer 14 for example can be silica gel or asphalt mixtures modified by epoxy resin
Rouge material.Wherein, quantum dot layer 11 is provided with red quantum dot material and green quanta point material, and red quantum dot material is by indigo plant
It is about 620nm to 640nm that light, which excites emission wavelength, and green quanta point material excited by blue light issue wavelength be about 520nm extremely
540nm。
As shown in figure 3, the utility model further relates to a kind of backlight module 100, including light source 20, optical diaphragm group 30, set
The straight-down negative quantum dot diffuser plate 10 between light source 20 and optical diaphragm group 30 is set, straight-down negative quantum dot diffuser plate 10 includes amount
Son point layer 11, glass substrate 13 and encapsulated layer 12, quantum dot layer 11 are arranged between encapsulated layer 12 and glass substrate 13.The light source
20 be blue-ray LED, issues the peak wavelength of blue light within the scope of 440nm to 470nm, and in each blue-ray LED and diffuser plate 10
Between be provided with a lens 40, which is optical secondary lens, and the light for projecting blue-ray LED expands, make
The light of blue-ray LED outgoing more broadly exposes on diffuser plate 10, and blue-ray LED and lens are arranged on backboard 50.
The utility model further relates to a kind of liquid crystal display (not shown), including liquid crystal display panel (not shown) and as described above
Backlight module 100, liquid crystal display panel is oppositely arranged with backlight module 100, and the light-emitting surface of backlight module 100 is towards liquid crystal surface
Plate.Specifically, liquid crystal display panel source driving plate (not shown) is additionally provided in backlight module 100, liquid crystal display panel passes through flip chip
(not shown) is connect with liquid crystal display panel source driving plate.
The backlight module and liquid crystal display of the utility model are provided with encapsulated layer 12 above quantum dot layer 11 and lower section are set
Be equipped with attached glass substrate 13, wherein encapsulated layer 12 be PET base material 121 arranged up and down and water oxygen barrier layer 122 or PET base material and
The composite layer that water oxygen barrier layer is formed only uses one layer of water oxygen barrier layer and PET base material above it, reduces backlight module 100
Thickness；The rigidity of glass substrate 13 is big, is unlikely to deform, and may be implemented ultra-thin, and the coefficient of expansion is relatively small, without reserving biggish
Gap surplus can further reduce 100 thickness of backlight module, realize the ultra-thin ultra-narrow of liquid crystal display, promote selling point.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that:
It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out etc.
With replacement；And these are modified or replaceed, various embodiments of the utility model technology that it does not separate the essence of the corresponding technical solution
The spirit and scope of scheme.
Claims (9)
1. a kind of backlight module, including light source and optical diaphragm group, which is characterized in that further include being arranged in light source and optical diaphragm
Straight-down negative quantum dot diffuser plate between group, the straight-down negative quantum dot diffuser plate include quantum dot layer, encapsulated layer and glass base
Plate, the quantum dot layer are arranged between the encapsulated layer and glass substrate.
2. backlight module according to claim 1, which is characterized in that table of the glass substrate far from the quantum dot layer
Face is arranged to matte surface.
3. backlight module according to claim 1, which is characterized in that between the glass substrate and the quantum dot layer
It is provided with diffusion layer.
4. backlight module according to claim 3, which is characterized in that the diffusion layer includes scattering particles.
5. backlight module described in any one of -4 according to claim 1, which is characterized in that the encapsulated layer includes PET base material
With water oxygen barrier layer, the water oxygen barrier layer is attached to the PET base material close to the surface of the quantum dot layer.
6. backlight module described in any one of -4 according to claim 1, which is characterized in that the encapsulated layer be PET base material and
The composite layer of water oxygen barrier layer.
7. backlight module described in any one of -4 according to claim 1, which is characterized in that the quantum dot in the quantum dot layer
Material includes red quantum dot material and green quanta point material.
8. backlight module described in any one of -4 according to claim 1, which is characterized in that the thickness of the glass substrate is less than
1.5 millimeter.
9. a kind of liquid crystal display, which is characterized in that including liquid crystal display panel and backlight described in any item of the claim 1 to 8
Mould group, the liquid crystal display panel are oppositely arranged with the backlight module, and the light-emitting surface of the backlight module is towards the liquid crystal surface
Plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920103851.7U CN209707723U (en) | 2019-01-22 | 2019-01-22 | A kind of backlight module and liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920103851.7U CN209707723U (en) | 2019-01-22 | 2019-01-22 | A kind of backlight module and liquid crystal display |
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| Publication Number | Publication Date |
|---|---|
| CN209707723U true CN209707723U (en) | 2019-11-29 |
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| CN201920103851.7U Active CN209707723U (en) | 2019-01-22 | 2019-01-22 | A kind of backlight module and liquid crystal display |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109633979A (en) * | 2019-01-23 | 2019-04-16 | 惠州市华星光电技术有限公司 | Backlight module and liquid crystal display device |
| CN114839809A (en) * | 2022-04-22 | 2022-08-02 | 北京京东方显示技术有限公司 | Backlight module and display device |
-
2019
- 2019-01-22 CN CN201920103851.7U patent/CN209707723U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109633979A (en) * | 2019-01-23 | 2019-04-16 | 惠州市华星光电技术有限公司 | Backlight module and liquid crystal display device |
| CN114839809A (en) * | 2022-04-22 | 2022-08-02 | 北京京东方显示技术有限公司 | Backlight module and display device |
| WO2023202646A1 (en) * | 2022-04-22 | 2023-10-26 | 京东方科技集团股份有限公司 | Backlight module and display device |
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Address after: 266555 Qingdao economic and Technological Development Zone, Shandong, Hong Kong Road, No. 218 Patentee after: Hisense Video Technology Co.,Ltd. Address before: 266555 Qingdao economic and Technological Development Zone, Shandong, Hong Kong Road, No. 218 Patentee before: HISENSE ELECTRIC Co.,Ltd. |