CN208737024U - Diffusion barrier - Google Patents
Diffusion barrier Download PDFInfo
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- CN208737024U CN208737024U CN201821590695.3U CN201821590695U CN208737024U CN 208737024 U CN208737024 U CN 208737024U CN 201821590695 U CN201821590695 U CN 201821590695U CN 208737024 U CN208737024 U CN 208737024U
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- scattering particles
- substrate
- diffusion barrier
- backlight module
- refractive index
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Abstract
The utility model proposes a kind of diffusion barriers characterized by comprising a substrate；And multiple scattering particles, the scattering particles are evenly distributed in the substrate, wherein the absolute value of the difference of the refractive index between the scattering particles and the substrate is less than or equal to 0.25, the partial size of the scattering particles is between 1 micron to 6 microns, and the scattering particles in the weight percent concentration in the substrate between 1 ‰ to 12 ‰, make the mist degree of the diffusion barrier whereby and transmitance be all larger than 80%.
Description
Technical field
The utility model relates to the technical field of display, in particular to a kind of diffusion barrier.
Background technique
Point light source and linear light source can be extended to area source by diffusion barrier, improve whole display effect, be all kinds of displays
Significant components in equipment.It is that scattering close to the inner portion is micro- why point light source and linear light source can be converted into area source by diffusion barrier
Scatter incident light to other directions, the power of scattering power are passed through " mist degree " Lai Hengliang by grain.In general, the expansion in display equipment
Film is dissipated while improving mist degree, loss will cause to brightness, the diffusion barrier of the prior art cannot be considered in terms of mist degree and transmitance.
Therefore, it is necessary to a kind of diffusion barrier be provided, to solve the problems of prior art.
Utility model content
The purpose of this utility model is to provide a kind of diffusion barrier, with solve diffusion barrier mist degree present in the prior art with
Transmitance cannot be considered in terms of the problem of mist degree and transmitance.
In order to solve the above technical problems, the utility model provides a kind of diffusion barrier characterized by comprising
One substrate；And
Multiple scattering particles, the scattering particles are evenly distributed in the substrate,
Wherein the absolute value of the difference of the refractive index between the scattering particles and the substrate is less than or equal to 0.25, institute
State the weight percent concentration that the partial size of scattering particles is between 1 micron to 6 microns and the scattering particles are in the substrate
Between 1 ‰ to 12 ‰, the mist degree of the diffusion barrier and transmitance is made to be all larger than 80% whereby.
According to one preferred embodiment of the utility model, the substrate is made of organic resin, wherein the organic resin is
Polymethyl methacrylate or polyethylene terephthalate；The scattering particles are made of organic material or inorganic material,
Wherein the organic material is epoxy resin or dimethyl silicone polymer, the inorganic material be titanium dioxide, silica or
Zinc oxide.
According to one preferred embodiment of the utility model, the difference of the refractive index between the scattering particles and the substrate
Absolute value is about 0.07, and the partial size of the scattering particles is about 4 microns and weight hundred of the scattering particles in the substrate
Dividing specific concentration is about 5 ‰.
The utility model also provides a kind of backlight module, which is characterized in that the backlight module includes as described above expands
Dissipate film.
The utility model also provides a kind of display panel, and the display panel has a backlight module, which is characterized in that institute
Stating backlight module includes diffusion barrier as described above.
The utility model also provides a kind of display device, and the display device has a display panel, the display panel
With a backlight module, which is characterized in that the backlight module includes diffusion barrier as described above.
Compared to the prior art, the utility model proposes a kind of diffusion barriers.The utility model is with common organic transparent tree
Rouge material is substrate, mixes the scattering particles of micron dimension partial size, passes through the refractive index between control substrate and scattering particles
Difference, the particle size of scattering particles, the incorporation of concentration of scattering particles make the diffusion barrier with haze, high transmittance,
To solve the problems, such as that the mist degree of diffusion barrier present in the prior art can not be promoted simultaneously with transmitance.
Detailed description of the invention
Fig. 1 is the stereoscopic schematic diagram according to the diffusion barrier of one preferred embodiment of the utility model.
Fig. 2 shows the mist according to the diffusion barrier of one preferred embodiment of the utility model production in the case where the light of various wavelength passes through
Degree and transmitance.
Specific embodiment
The explanation of following embodiment is to can be used to the specific of implementation to illustrate the utility model with reference to additional schema
Embodiment.The direction term that the utility model is previously mentioned, for example, "upper", "lower", "front", "rear", "left", "right", "inner", "
Outside ", " side " etc. is only the direction with reference to annexed drawings.Therefore, the direction term used is to illustrate and understand that this is practical
It is novel, rather than to limit the utility model.The similar unit of structure is to be given the same reference numerals in the figure.
Using common organic transparent resin material as substrate, incorporation micron dimension partial size dissipates the embodiments of the present invention
Particle is penetrated, the difference of refractive index between control substrate and scattering particles, the particle size of scattering particles, scattering particles are passed through
Incorporation of concentration makes the diffusion barrier with haze, high transmittance.For the refractive index, particle size and incorporation of scattering particles
Concentration is described as follows:
1. the refractive index about scattering particles: the refractive index between scattering particles and surrounding substrate medium is closer to each other
When, the refractive index homogeneity of diffusion barrier entirety is good, may make the probability of forescatering larger, and the probability scattered backward is smaller, expands
It is higher to dissipate film transmitance.Extreme case is that the refractive index of scattering particles is equal to the refractive index of substrate, in this case, is being detained
Except the reflection loss of outer interface, can be considered as diffusion barrier is full impregnated, and the transmitance of diffusion barrier is ideally at this time
Maximum value.
2. the particle size about scattering particles: when the particle size of scattering particles is smaller, scattering effect to the light of short wavelength
Fruit is stronger, so will increase the dispersion effect of the light of short wavelength.When the particle size of scattering particles increases, length so will increase
The dispersion effect of the light of wavelength；And when the particle size of scattering particles reaches a special value, scattering particles are to blue light~red
The scattering power of light is almost the same, at this point, the diffusion effect of diffusion barrier is not substantially with wavelength change.The grain of scattering particles at this time
Diameter size is the scattering particles particle size used selected by the embodiments of the present invention, and diffusion barrier at this time substantially will not
Dispersion is generated, it can be preferably using in the display.
3. the incorporation of concentration about scattering particles: the incorporation of concentration of scattering particles influences the mean free path of photon.With
The incorporation of concentration of scattering particles in substrate increases, and after photon enters diffusion barrier, the scattering imaging of experience be will increase, and lead to photon
The mean free path of movement becomes smaller, and dispersion effect increases backward, to improve the mist degree of diffusion barrier, reduces the saturating of diffusion barrier
Cross rate.In order to obtain higher transmitance, the incorporation of concentration of scattering particles cannot be too high.However, if the incorporation of scattering particles is dense
It spends too small and mist degree can be reduced, so the incorporation of concentration of scattering particles is also the diffusion barrier for influencing production haze, high transmittance
One of key parameter.
Fig. 1 is please referred to, Fig. 1 is the stereoscopic schematic diagram according to the diffusion barrier of one preferred embodiment of the utility model.
As shown in Figure 1, the embodiments of the present invention provide a kind of diffusion barrier 1.The diffusion barrier 1 include a substrate 11 and
Multiple scattering particles 12, the scattering particles 12 are evenly distributed in the substrate 11.Embodiment according to the present utility model, institute
The absolute value for stating the difference of the refractive index between scattering particles 12 and the substrate 11 is less than or equal to (being not more than) 0.25, institute
State the weight percent that the partial size of scattering particles 12 is between 1 micron to 6 microns and the scattering particles 12 are in the substrate 11
Specific concentration makes the mist degree of the diffusion barrier 1 and transmitance be all larger than 80% whereby between 1 ‰ to 12 ‰.
The substrate 11 is made of organic resin, such as the organic resin is the polymethyl that refractive index is about 1.49
The polyethylene terephthalate (PET) that sour methyl esters (PMMA) or refractive index are about 1.65.
In addition, the scattering particles 12 are made of organic material or inorganic material, such as the organic material is refractive index
The dimethyl silicone polymer (PDMS) that the epoxy resin or refractive index that are about 1.58 are about 1.41, the inorganic material is refractive index
Titanium dioxide (the TiO for being about 2.352), the silica (SiO that refractive index is about 1.462) or refractive index be about 2 zinc oxide
(ZnO)。
Embodiment according to the present utility model, by the difference of the refractive index between the scattering particles 12 and the substrate 11
Absolute value be limited to less than or be equal to 0.25.In addition, being directed to organic material, such as PMMA, PS, epoxy resin, PDMS
Deng the slightly different refractive index of the available numerical value of different synthesis conditions.Scattering film, example can be even prepared with same class material
Such as, using a kind of PMMA of refractive index as the substrate 11, as scattering particles 12, this can subtract the PMMA of another refractive index
Stress between the small scattering particles 12 and the substrate 11 obtains effect more preferably diffusion barrier.
Present inventor discovery arrive, when the refractive index between the scattering particles 12 and the substrate 11 difference it is exhausted
It is 1 micron to the partial size that value is the 0.1, scattering particles 12, weight percent of the scattering particles 12 in the substrate 11
When specific concentration is between 1 ‰ to 12 ‰, the mist degree of the diffusion barrier is about 10% to 65%, transmitance is 95% to 45%.When
The absolute value of the difference of refractive index between the scattering particles 12 and the substrate 11 is the grain of the 0.1, scattering particles 12
It is described when diameter is 6 microns, weight percent concentration of the scattering particles 12 in the substrate 11 is between 1 ‰ to 12 ‰
The mist degree of diffusion barrier is about 30% to 95%, transmitance is 85% to 30%.
Also, present inventor's discovery is arrived, when the difference of the refractive index between the scattering particles 12 and the substrate 11
Absolute value be 0.2, the partial size of the scattering particles 12 is 1 micron, weight of the scattering particles 12 in the substrate 11
When percent concentration is between 1 ‰ to 12 ‰, the mist degree of the diffusion barrier is about 25% to 80%, transmitance be 90% to
25%.When the absolute value of the difference of the refractive index between the scattering particles 12 and the substrate 11 is 0.2, the scattering particles
12 partial size is 6 microns, weight percent concentration of the scattering particles 12 in the substrate 11 is between 1 ‰ to 12 ‰
When, the mist degree of the diffusion barrier is about 45% to 97%, transmitance is 70% to 15%.
Pass through the absolute value of the difference of the refractive index between the control scattering particles 12 and the substrate 11, the scattering
The weight percent concentration of the particle size of particle 12, the scattering particles 12 in the substrate 11, can control mist degree with
The size of transmitance, numerical value change between 10%~97%.Therefore it can be adapted for different application scenarios.
Referring to figure 2., Fig. 2 show according to one preferred embodiment of the utility model production diffusion barrier various wavelength light
Mist degree and transmitance under.As shown in Fig. 2, in the present embodiment, by control the scattering particles and the substrate it
Between refractive index difference absolute value be 0.07, the partial size of the scattering particles is being 4 microns and the scattering particles in institute
Stating weight percent concentration in substrate is 5 ‰, the light (violet wavelength of the diffusion barrier of the utility model in wavelength 400 to 750nm
To red light wavelength) mist degree under and transmitance be all larger than 80%.Therefore, the expansion of embodiment production according to the present utility model
Scattered film can solve the problem of diffusion barrier present in the prior art cannot be considered in terms of mist degree and transmitance mist degree and transmitance.
The embodiments of the present invention also provide a kind of backlight module, and the backlight module includes diffusion as described above
Film.
The embodiments of the present invention also provide a kind of display panel (such as oled panel, micro-LED panel, the face LED
Plate etc.), the display panel has a backlight module, and the backlight module includes diffusion barrier as described above.
The embodiments of the present invention also provide a kind of display device (such as mobile phone, TV, display screen or any other is aobvious
Showing device etc.), the display device has a display panel, and the display panel has a backlight module, the backlight module
Including diffusion barrier as described above.
Compared to the prior art, the embodiments of the present invention propose a kind of diffusion barrier.The embodiments of the present invention with
Common organic transparent resin material is substrate, mixes the scattering particles of micron dimension partial size, passes through control substrate and scattering
The difference of refractive index, the particle size of scattering particles, the incorporation of concentration of scattering particles between grain make with haze, height
The diffusion barrier of transmitance, to solve the problems, such as that diffusion barrier present in the prior art cannot be considered in terms of mist degree and transmitance mist degree and thoroughly
Cross rate.
Although above preferred embodiment is not used in conclusion the utility model is disclosed above with preferred embodiment
To limit the utility model, those skilled in the art can make without departing from the spirit and scope of the utility model
It is various to change and retouch, therefore the protection scope of the utility model subjects to the scope of the claims.
Claims (6)
1. a kind of diffusion barrier characterized by comprising
One substrate；And
Multiple scattering particles, the scattering particles are evenly distributed in the substrate,
Wherein the absolute value of the difference of the refractive index between the scattering particles and the substrate is described to dissipate less than or equal to 0.25
The weight percent concentration that the partial size of particle is between 1 micron to 6 microns and the scattering particles are in the substrate is penetrated to exist
Between 1 ‰ to 12 ‰, the mist degree of the diffusion barrier and transmitance is made to be all larger than 80% whereby.
2. diffusion barrier according to claim 1, which is characterized in that
The substrate is made of organic resin, wherein the organic resin is polymethyl methacrylate or poly terephthalic acid second
Diol ester；
The scattering particles are made of organic material or inorganic material, wherein the organic material is epoxy resin or poly dimethyl
Siloxanes, the inorganic material are titanium dioxide, silica or zinc oxide.
3. diffusion barrier according to claim 1, which is characterized in that the refractive index between the scattering particles and the substrate
The absolute value of difference be about 0.07, the partial size of the scattering particles is about 4 microns and the scattering particles are in the substrate
Weight percent concentration be about 5 ‰.
4. a kind of backlight module, which is characterized in that the backlight module includes expanding as claimed any one in claims 1 to 3
Dissipate film.
5. a kind of display panel, the display panel has a backlight module, which is characterized in that the backlight module includes as weighed
Benefit require any one of 1 to 3 described in diffusion barrier.
6. a kind of display device, the display device has a display panel, and the display panel has a backlight module, special
Sign is that the backlight module includes diffusion barrier as claimed any one in claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821590695.3U CN208737024U (en) | 2018-09-28 | 2018-09-28 | Diffusion barrier |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821590695.3U CN208737024U (en) | 2018-09-28 | 2018-09-28 | Diffusion barrier |
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| CN208737024U true CN208737024U (en) | 2019-04-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109031487A (en) * | 2018-09-28 | 2018-12-18 | 武汉华星光电技术有限公司 | Diffusion barrier and preparation method thereof |
-
2018
- 2018-09-28 CN CN201821590695.3U patent/CN208737024U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109031487A (en) * | 2018-09-28 | 2018-12-18 | 武汉华星光电技术有限公司 | Diffusion barrier and preparation method thereof |
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