CN202383315U - Optical diffusion film - Google Patents
Optical diffusion film Download PDFInfo
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- CN202383315U CN202383315U CN2011205716429U CN201120571642U CN202383315U CN 202383315 U CN202383315 U CN 202383315U CN 2011205716429 U CN2011205716429 U CN 2011205716429U CN 201120571642 U CN201120571642 U CN 201120571642U CN 202383315 U CN202383315 U CN 202383315U
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Abstract
The utility model relates to the technical field of optical films, particularly to an optical diffusion film. The optical diffusion film solves the defect of poor bond force between diffusion particles and resin and between diffusion particles and substrates in exiting optical diffusion films. The optical diffusion film is a three-layer structure and comprises a base material, wherein at least one side of the base material is provided with a diffusion layer, and the diffusion layer contains scattering particles with particle diameters ranging from 1 mu m to 60 mu m. In the optical diffusion film, the bond force between diffusion particles and the resin, surface anti-blocking performance and optical performance are good.
Description
Technical field
The utility model relates to optical film technology field, relates in particular to a kind of optical diffusion.
Background technology
Optical diffusion membrane (also can be described as optical diffusion, be called for short diffusion barrier) is widely used in liquid crystal display, advertising lamp box, lighting etc. to be needed in the device of light source, and particularly in liquid crystal indicator, diffusion barrier is the key components and parts in the backlight module.The main effect of optical diffusion is to promote light luminance, and with gentle diffusingization of light that LGP is received, for display provides a uniform surface light source, plays the effect of widening the visual angle.
With regard to LCD, in whole optics module, need two optical diffusions, be called diffusion barrier and following diffusion barrier respectively.Wherein descend diffusion barrier near LGP, major function is light harvesting, cover LGP printing net-point or line source, the fluorescent tube shadow; Last diffusion barrier has high light penetration capacity, can improve the visual angle, increase the soft property of light source, has the function of diffusion and protection prismatic lens concurrently.It is not high that diffusion barrier is compared to material cost proportion shared other blooming piece (like prismatic lens), but under the requirement of high brightness specification, the uniformity coefficient of display screen and brightness mainly receive the quality influence of diffusion barrier.
The purpose of diffusion barrier is evenly to convert linear light sorurce or point source of light to area source, and its action principle is to utilize light in having the medium of different refractivity, to pass, and light produces the phenomenon of many refractions, reflection, scattering, causes the effect of optics diffusion.
The method for making of diffusion barrier adopts the wet coat mode of scattering particle type more at present; As shown in Figure 1; Existing diffusion barrier structure is respectively diffusion layer 2, base material 1 and antiblock particle 4 from top to bottom, and diffusion layer 2 contains scattering particle 3 (also can be described as the diffusion particulate, or diffusion particle) and binder resin.Wherein base material 1 is generally the transparent optical level polyester film, and scattering particle 3 can be inorganic particulate or macromolecule particle (or claiming polymer particle).The upper and lower of some diffusion barrier structure all are diffusion layers, also are provided with adhesive linkage below the following diffusion layer of some diffusion barrier.Diffusion layer 2 is through coating method, with scattering particle and binder resin, is coated on base material 1 surface like the potpourri of polyacrylic resin (or claim acryl resin), coating through hyperthermia drying remove solvent, sclerosis forms.
Scattering particle type cloth of coating-type diffusion barrier has that transmittance is higher, and the mist degree range of adjustment is big, and the advantage that presentation quality is good is the first-selected kind of diffusion barrier of high-end backlight product.But such diffusion barrier exists the cohesive force of scattering particle and solvent, resin not good owing to adopt back coating processing mode, and the distribution of particles uniformity coefficient is difficult to shortcomings such as control.In addition, used coating contains organic solvent, because of solvent evaporates degree difference is prone to cause the uneven problem of coating, also exists dry out solvent consumes energy and used time long simultaneously, and dry run is subject to humiture to be influenced, problems such as the exhaust-gas treatment of solvent.
Summary of the invention
In order to solve diffusion particle and the not good defective of cohesive force between binder resin and the basement membrane in the existing optical diffusion; And existing optical diffusion need be coated with the back processed; The defective of complex process; The invention provides a kind of optical diffusion and preparation method thereof, diffusion particle and the cohesive force between the resin in the optical diffusion provided by the invention are better, and surperficial antiblock performance and optical property are good; Its preparation method comprises three-layer co-extrudedly going out and stretch processes, and is simple to operate.
In order to solve the problems of the technologies described above, the present invention adopts following technical proposals:
A kind of optical diffusion, its feature be, said diffusion barrier is a three-decker, comprises base material, and at least one side in said base material both sides is provided with diffusion layer, and said diffusion layer includes scattering particle, and the particle diameter of said scattering particle is 1-60 μ m.
In general, should select the particle of a series of different-grain diameters for use, to reach different light scattering effects.For example, the system that adopts each particle size range to be evenly distributed, the diffusion barrier dispersion effect that obtains is more even; Adopt coarse grain footpath and fine grain respectively to account for half the system, the diffusion barrier brightness that obtains will be higher.
Further, the uniform optical diffusion of preparation dispersion effect, the general assembly (TW) of said scattering particle is 100%; Wherein: particle diameter is that the particle of 1-15um accounts for 25%; Particle diameter is that the particle of 16-30um accounts for 25%, and particle diameter is that the particle of 31-45um accounts for 25%, and particle diameter is that the particle of 46-60um accounts for 25%.Above-mentioned number percent is weight percentage.
Further, the optical diffusion of preparation high brightness, the general assembly (TW) of said scattering particle is 100%; Wherein: particle diameter is that the particle of 1-15um accounts for 40%; Particle diameter is that the particle of 16-30um accounts for 10%, and particle diameter is that the particle of 31-45um accounts for 10%, and particle diameter is that the particle of 46-60um accounts for 40%.Above-mentioned number percent is weight percentage.
Further, a side of said base material is provided with diffusion layer, and opposite side is provided with the antiblock layer, and said antiblock layer includes the antiblock particle, and the particle diameter of said antiblock particle is 1-4 μ m.Said antiblock particle is preferably silicon dioxide granule.
Wherein diffusion layer (or claiming scattering layer) plays the light diffusion, and the antiblock layer plays the antiblock effect in the film unwinding and rewinding process.Because the existing particulate of scattering layer itself exists, itself also has the antiblock effect, so there is the one side of scattering layer to need not to add the antiblock layer again.
Further, the thickness of said optical diffusion is 75-250 μ m, and the thickness of said base material is the 76%-88% of diffusion barrier thickness, and the thickness of said diffusion layer is the 6%-12% of diffusion barrier thickness.
The friction factor of film surface (dynamic and static friction factor) is generally 0.2-0.6, and best-case for 0.3-0.5, satisfies the resistance to blocking requirement of film unwinding and rewinding down.Aspect optical property, the transmittance of film is 86-94%, and mist degree is 60-94%.In general, the transmittance of film is high more, and light utilization efficiency is just high more; Mist degree is high more, and then the diffusion effect of film is good more.The requirement of transmittance, mist degree can be met through kind, particle diameter and the addition of adjustment scattering particle.
Further, said diffusion barrier is three-layer co-extruded structure.In basement membrane (or claiming base material) processing, directly accomplish the preparation of diffusion barrier.On the one hand, remove coating back processed operation from, thereby can avoid the product quality that coated brings and the problem of production management aspect; On the other hand, the skin of scattering particle and polyester basement membrane (being diffusion layer) resin fusion is mixed, need not to add extra binder resin and solvent; Make scattering particle embed in the diffusion layer securely; Diffusion layer and base material be through the preparation of fusion coextrusion and stretch processes, two-layer between not significantly boundary, formed an integral body; So the cohesive force between scattering particle and the basement membrane is better.
Further, said scattering particle particle diameter is 2-40 μ m.Said scattering particle can be according to the difference of particle diameter and said thickness of diffusion layer, the diffusion layer that when three-layer co-extruded, submerges fully, or partly expose on the diffusion barrier surface, or be squeezed in the said base material.
Further, the uniform optical diffusion of preparation dispersion effect, the general assembly (TW) of said scattering particle is 100%; Wherein: particle diameter is that the particle of 2-10um accounts for 25%; Particle diameter is that the particle of 11-20um accounts for 25%, and particle diameter is that the particle of 21-30um accounts for 25%, and particle diameter is that the particle of 31-40um accounts for 25%.Said number percent is weight percentage.
Further, the optical diffusion of preparation high brightness, the general assembly (TW) of said scattering particle is 100%; Wherein: particle diameter is that the particle of 2-10um accounts for 30%; Particle diameter is that the particle of 11-20um accounts for 20%, and particle diameter is that the particle of 21-30um accounts for 20%, and particle diameter is that the particle of 31-40um accounts for 30%.Said number percent is weight percentage.
Further, the thickness of said optical diffusion is 100-200 μ m.
Further, the thickness of said optical diffusion is 75-150 μ m.
Further, the thickness of said optical diffusion is 150-250 μ m.
Further, said base material raw material comprises polyethylene terephthalate (PET), polybutylene terephthalate (PBT), PEN (PEN) or its co-polymerization modified polyester, and said scattering particle is inorganic particulate or polymer particle.The inherent viscosity of polyester material is 0.55-0.70dl/g, is preferably 0.64-0.68dl/g, and fusing point is preferably more than 260 ℃ greater than 255 ℃.Said scattering particle is preferably polymer particle, particularly the transparency better and possess the polymer particle of certain optical index, like resin material.
Further; Said scattering particle is a polymer particle; The optical index of said polymer particle material is 1.4-1.75, and said polymer particle comprises the combination of a kind of in polymethylmethacrylate particle, polyester granules, polycarbonate particle or the polystyrene particle or at least two kinds.
The present invention also provides a kind of preparation method of above-mentioned optical diffusion, and its feature is that said preparation method comprises the steps:
(1) preparation of scattering masterbatch
The scattering particle of calculated amount and polyester slice is evenly mixed, make that the weight content of scattering particle in masterbatch is 4g-8g/kg, be preferably 6g/kg (6000ppm), fusion then, extrude, pelletizing, make the scattering masterbatch; Whether wherein, scattering particle must be uniformly dispersed in polyester masterbatch and can use, through the distribution situation of scanning electron microscopic observation particle, check the dispersion of scattering particle in the masterbatch section even.
(2) preparation of diffusion barrier
Step (1) gained scattering masterbatch is mixed with polyester slice, and the weight ratio of wherein said scattering masterbatch and polyester slice is 30-50: 70-50, processes compound A; Gained compound A and base material raw material B carry out fusion plastification respectively; The melt of gained gets into the three-layer co-extruded die head that goes out machine through divider, and two skins are blended stock A, and the middle layer is base material raw material B; Through cooling, casting sheet, stretch processes, make the optical diffusion of ABA structure after the coextrusion;
Perhaps,
Step (1) gained scattering masterbatch is mixed with polyester slice, and the weight ratio of wherein said scattering masterbatch and polyester slice is 30-50: 70-50, processes compound A; Antiblock masterbatch and polyester slice is mixed, and the weight ratio of wherein said antiblock masterbatch and polyester slice is 30-40: 60-70, processes compound C; Gained compound A, compound C and base material raw material B carry out fusion plastification respectively; The melt of gained gets into the three-layer co-extruded die head that goes out machine through divider, and two skins are respectively blended stock A and compound C, and the middle layer is base material raw material B; Through cooling, casting sheet, stretch processes, make the optical diffusion of ABC structure after the coextrusion.
The present invention also provides a kind of module backlight, comprises optical diffusion, and its feature is that said diffusion barrier is above-mentioned optical diffusion.
The present invention also provides a kind of liquid crystal indicator, comprises module backlight, and its feature is that said module backlight comprises above-mentioned optical diffusion.
Compared with prior art, optical diffusion provided by the invention, resistance to blocking, the combination property of light transmission rate and mist degree is better, on properties of product, can reach the level of existing product.The preparation method of optical diffusion provided by the invention is simple, on preparation technology, need not be coated with processed in the back; Saved numerous and diverse operation one, the demand of removing binder resin, organic solvent etc. from not only reduces production cost; Make operation more easy; And can improve performance of products, as improved the cohesive strength between scattering layer and the basement membrane, and be beneficial to environmental protection.The preparation method of optical diffusion provided by the invention just can realize on existing drawn polyester production line.
Description of drawings
The structural representation of the diffusion barrier that Fig. 1 makes for existing scattering particle type rubbing method;
Fig. 2 is the structural representation of optical diffusion provided by the invention (single diffusion layer);
Fig. 3 is the structural representation of optical diffusion provided by the invention (double diffusion layer);
Fig. 4 is the diagrammatic cross-section of optical diffusion provided by the invention (single diffusion layer);
Fig. 5 is the diagrammatic cross-section of optical diffusion provided by the invention (double diffusion layer).
Wherein, 1 is base material, and 2 is diffusion layer, and 3 is scattering particle, and 4 is the antiblock particle, and 5 is the antiblock layer.
Embodiment
As shown in Figure 2, optical diffusion provided by the invention (single diffusion layer) is a three-decker, comprises base material 1, and a side of said base material 1 is provided with diffusion layer 2, and said diffusion layer 2 is added with scattering particle 3, and the particle diameter of said scattering particle 3 is 1-60 μ m; The opposite side of said base material 1 is provided with antiblock layer 5, and said antiblock layer 5 is added with antiblock particle 4, and the particle diameter of said antiblock particle 4 is 1-4 μ m.
As shown in Figure 3, optical diffusion provided by the invention (double diffusion layer) is a three-decker, comprises base material 1, and the both sides of said base material 1 all are provided with diffusion layer 2, and said diffusion layer 2 is added with scattering particle 3.
As shown in Figure 4, optical diffusion provided by the invention (single diffusion layer) is a three-decker, comprises base material 1; One side of said base material 1 is provided with diffusion layer 2, and said diffusion layer 2 is added with scattering particle 3, and the particle diameter of said scattering particle 3 is 1-60 μ m; Said scattering particle 3 is different according to particle diameter and diffusion layer 2 thickness situation; The diffusion layer 2 that can when three-layer co-extruded, submerge fully, or part exposes on the diffusion barrier surface, or be squeezed in the base material 1; The opposite side of said base material 1 is provided with antiblock layer 5, and said antiblock layer 5 is added with antiblock particle 4, and the particle diameter of said antiblock particle 4 is 1-4 μ m.
As shown in Figure 5, optical diffusion provided by the invention (double diffusion layer) is a three-decker, comprises base material 1; The both sides of said base material 1 all are provided with diffusion layer 2; Said diffusion layer 2 is added with scattering particle 3, and said scattering particle 3 is different according to particle diameter and diffusion layer 2 thickness situation, and diffusion layer 2 fully can submerge when three-layer co-extruded; Or partly expose, or be squeezed in the base material 1 on the diffusion barrier surface.
The used material and facility of the present invention is current material and equipment; For example: mylar prepares raw material and adopts the film grade polyester chip of selling on the market, is generally polyethylene terephthalate (PET), polybutylene terephthalate (PBT), PEN (PEN) or its co-polymerization modified polyester; Scattering particle adopts polymethylmethacrylate (PMMA), polyester (PET), polycarbonate (PC), the polystyrene of selling on the market (PS).
The present invention adopts the resistance to blocking and the optical property of the prepared optical diffusion of following detection method commonly used and testing of equipment.
Friction factor: estimate the surperficial resistance to blocking of diffusion barrier, the friction factor of the high more correspondence of resistance to blocking is low more.Determination of Friction Coefficient is carried out on the MXD-01A of Labthink Instruments Co., Ltd. friction coefficient instrument according to being GB 10006-88 plastic sheeting and thin slice measuring friction coefficient method.
Light transmission rate and mist degree: be used for evaluating the optical property of diffusion film, the high more then optical property of the light transmission rate of film is good more, and the dispersion effect of the high more film of mist degree is good more.The mensuration of light transmission rate and mist degree is carried out on the EEL 57D of Britain Diffusion company mist degree appearance according to GB/T 2410-2008 standard.
The equipment that stretch processes is used: the mylar stretching production line that the Mitsubishi heavy industry is produced.
The preparation method of optical diffusion provided by the invention comprises the steps:
(1) preparation of scattering masterbatch
The scattering particle of calculated amount and polyester slice is evenly mixed, make that the weight content of scattering particle in masterbatch is 4g-8g/kg, be preferably 6g/kg (6000ppm), fusion then, extrude, pelletizing, make the scattering masterbatch;
(2) preparation of diffusion barrier
Step (1) gained scattering masterbatch is mixed with polyester slice, and the weight ratio of wherein said scattering masterbatch and polyester slice is 30-50: 70-50, processes compound A; Gained compound A and base material raw material B carry out fusion plastification respectively, and the melt of gained gets into the three-layer co-extruded die head that goes out machine through divider, and two skins are blended stock A; The middle layer is base material raw material B, and through cooling, casting sheet, the gained sheet is 4 times of 100 ℃ of following longitudinal stretchings after the coextrusion; 3.8 times of 104 ℃ of following cross directional stretchs; Handle 225 ℃ of following thermal finalizations, rolling after the cooling, making thickness is the ABA structure optical diffusion of 75-250 μ m;
Perhaps,
Step (1) gained scattering masterbatch is mixed with polyester slice, and the weight ratio of wherein said scattering masterbatch and polyester slice is 30-50: 70-50, processes compound A; Antiblock masterbatch and polyester slice is mixed, and the weight ratio of wherein said antiblock masterbatch and polyester slice is 30-40: 60-70, processes compound C; Gained compound A, compound C and base material raw material B carry out fusion plastification respectively, and the melt of gained gets into the three-layer co-extruded die head that goes out machine through divider, and two skins are respectively blended stock A and compound C; The middle layer is base material raw material B, and through cooling, casting sheet, the gained sheet is 4 times of 100 ℃ of following longitudinal stretchings after the coextrusion; 3.8 times of 104 ℃ of following cross directional stretchs; Handle 225 ℃ of following thermal finalizations, rolling after the cooling, making thickness is the ABC structure optical diffusion of 75-250 μ m.
The preparation method of diffusion barrier is identical with above-mentioned preparation method among the following embodiment, and just material is different with proportioning, and through above-mentioned detection method the surperficial antiblock performance and the optical property (transmittance, mist degree) of the diffusion barrier of following embodiment preparation is measured.
Among the following embodiment 1-8; Said diffusion barrier raw material includes light section (product type is FG600) and antiblock masterbatch section (product type is FG610), the aforementioned film grade polyester chip that has light section and antiblock masterbatch to cut into slices to be the production of Chinese Yizheng Fiber Optical plant company limited.
Scattering particle adopts polymethylmethacrylate (PMMA) particle, is changed into industrial group's preparation and is provided by Japanese ponding, and particle diameter is 2-40um, and optical index is 1.45-1.55.
Wherein, said PMMA uses with master batch form, and the weight content of said PMMA in masterbatch is 4g-8g/kg.The thickness of said base material (middle layer) is 80% of diffusion barrier thickness, and the thickness of said diffusion layer is 10% of diffusion barrier thickness.
Prepare diffusion barrier by preceding method; The gained film thickness is 75um, single diffusion layer, and the scattering masterbatch is 32: 68 with the weight ratio that the light section is arranged in the diffusion layer; The PMMA particle diameter is 2-10um; Weight content in masterbatch is 6g/kg, and the antiblock masterbatch is 35: 65 with the weight ratio that the light section is arranged in the antiblock layer, and the light section has been used in the middle layer fully.The gained diffusion barrier is as shown in Figure 2, and film surface antiblock performance and optical property (transmittance, mist degree) are measured the result and seen table 1.
Prepare diffusion barrier by preceding method; The gained film thickness is 125um, single diffusion layer, and the scattering masterbatch is 36: 64 with the proportioning that the light section is arranged in the diffusion layer; The PMMA particle diameter is 2-20um; Weight content in masterbatch is 6g/kg, and the antiblock masterbatch is 35: 65 with the weight ratio that the light section is arranged in the antiblock layer, and the light section has been used in the middle layer fully.The gained diffusion barrier is as shown in Figure 2, and film surface antiblock performance and optical property (transmittance, mist degree) are measured the result and seen table 1.
Prepare diffusion barrier by preceding method; The gained film thickness is 188um, single diffusion layer, and the scattering masterbatch is 40: 60 with the proportioning that the light section is arranged in the diffusion layer; The PMMA particle diameter is 11-25um; Weight content in masterbatch is 6g/kg, and the antiblock masterbatch is 35: 65 with the weight ratio that the light section is arranged in the antiblock layer, and the light section has been used in the middle layer fully.The gained diffusion barrier is as shown in Figure 4, and film surface antiblock performance and optical property (transmittance, mist degree) are measured the result and seen table 1.
Prepare diffusion barrier by preceding method; The gained film thickness is 250um, single diffusion layer, and the scattering masterbatch is 48: 52 with the proportioning that the light section is arranged in the diffusion layer; The PMMA particle diameter is 2-40um; Weight content in masterbatch is 6g/kg, and the antiblock masterbatch is 35: 65 with the weight ratio that the light section is arranged in the antiblock layer, and the light section has been used in the middle layer fully.The gained diffusion barrier is as shown in Figure 4, and film surface antiblock performance and optical property (transmittance, mist degree) are measured the result and seen table 1.
Table 1
| |
1 | 2 | 3 | 4 |
| Film thickness (um) | 75 | 125 | 188 | 250 |
| Type | Single diffusion layer | Single diffusion layer | Single diffusion layer | Single diffusion layer |
| Scattering masterbatch: the light material is arranged | 32∶68 | 36∶64 | 40∶60 | 48∶52 |
| Friction factor (moving/quiet) | 0.53/0.54 | 0.44/0.46 | 0.41/0.44 | 0.34/0.37 |
| Light transmission rate (%) | 93 | 92 | 92 | 89 |
| Mist degree (%) | 72 | 79 | 83 | 88 |
Prepare diffusion barrier by preceding method, the gained film thickness is 75um, the double diffusion layer; The scattering masterbatch is 32: 68 with the proportioning that the light section is arranged in two skins; The PMMA particle diameter is 2-10um, and the weight content in masterbatch is 6g/kg, and the light section has been used in the middle layer fully.The gained diffusion barrier is as shown in Figure 3, and film surface antiblock performance and optical property (transmittance, mist degree) are measured the result and seen table 2.
Embodiment 6
Prepare diffusion barrier by preceding method, the gained film thickness is 125um, the double diffusion layer; The scattering masterbatch is 36: 64 with the proportioning that the light section is arranged in two skins; The PMMA particle diameter is 2-20um, and the weight content in masterbatch is 6g/kg, and the light section has been used in the middle layer fully.The gained diffusion barrier is as shown in Figure 3, and film surface antiblock performance and optical property (transmittance, mist degree) are measured the result and seen table 2.
Embodiment 7
Prepare diffusion barrier by preceding method, the gained film thickness is 188um, the double diffusion layer; The scattering masterbatch is 40: 60 with the proportioning that the light section is arranged in two skins; The PMMA particle diameter is 11-25um, and the weight content in masterbatch is 6g/kg, and the light section has been used in the middle layer fully.The gained diffusion barrier is as shown in Figure 5, and film surface antiblock performance and optical property (transmittance, mist degree) are measured the result and seen table 2.
Embodiment 8
Prepare diffusion barrier by preceding method, the gained film thickness is 250um, the double diffusion layer; The scattering masterbatch is 48: 52 with the proportioning that the light section is arranged in two skins; The PMMA particle diameter is 2-40um, and the weight content in masterbatch is 6g/kg, and the light section has been used in the middle layer fully.The gained diffusion barrier is as shown in Figure 5, and film surface antiblock performance and optical property (transmittance, mist degree) are measured the result and seen table 2.
Table 2
| |
5 | 6 | 7 | 8 |
| Film thickness (um) | 75 | 125 | 188 | 250 |
| Type | The double diffusion layer | The double diffusion layer | The double diffusion layer | The double diffusion layer |
| Scattering masterbatch: the light material is arranged | 32∶68 | 36∶64 | 40∶60 | 48∶52 |
| Friction factor (moving/quiet) | 0.48/0.50 | 0.39/0.43 | 0.32/0.33 | 0.29/0.32 |
| Light transmission rate (%) | 93 | 92 | 91 | 89 |
| Mist degree (%) | 81 | 86 | 92 | 94 |
Among the following embodiment 9-16, said scattering particle particle diameter is 1-30um, comprises commercially available polyester (PET) particle, polycarbonate (PC) particle or polystyrene (PS) particle; Polyester slice (or claiming to have the light section) is PBT or pen film grade polyester chip.The thickness of base material (middle layer) is 80% of diffusion barrier thickness, and the thickness of said diffusion layer is 10% of diffusion barrier thickness.The film grade polyester chip that antiblock masterbatch section (product type is FG610) is produced for Chinese Yizheng Fiber Optical plant company limited.
Embodiment 9
Used scattering particle is polystyrene (PS) particle in the present embodiment, and particle diameter is 1-20um; The used light section that has is PBT film grade polyester chip.
Prepare diffusion barrier by preceding method, the gained film thickness is 100um, single diffusion layer, and the scattering masterbatch is 30: 70 with the weight ratio that the light section is arranged in the diffusion layer, the weight content of scattering particle in masterbatch is 6g/kg; The antiblock masterbatch is 35: 65 with the weight ratio that the light section is arranged in the antiblock layer, and the thickness of antiblock layer is 10% of diffusion barrier thickness; The light section has been used in the middle layer fully.The gained diffusion barrier is as shown in Figure 2, and film surface antiblock performance and optical property (transmittance, mist degree) are measured the result and seen table 3.
Embodiment 10
Scattering particle described in the present embodiment is polyester (PET) particle, and particle diameter is 10-30um; Said have the light section to be the pen film grade polyester chip.
Prepare diffusion barrier by preceding method, the gained film thickness is 200um, single diffusion layer, and the scattering masterbatch is 50: 50 with the weight ratio that the light section is arranged in the diffusion layer, the weight content of scattering particle in masterbatch is 4g/kg; The antiblock masterbatch is 35: 65 with the weight ratio that the light section is arranged in the antiblock layer, and the thickness of antiblock layer is 10% of diffusion barrier thickness; The light section has been used in the middle layer fully.The gained diffusion barrier is as shown in Figure 2, and film surface antiblock performance and optical property (transmittance, mist degree) are measured the result and seen table 3.
Embodiment 11
Scattering particle described in the present embodiment is polycarbonate (PC) particle, and particle diameter is 10-30um; Said have the light section to be the pen film grade polyester chip.
Prepare diffusion barrier by preceding method, the gained film thickness is 150um, single diffusion layer, and the scattering masterbatch is 40: 60 with the weight ratio that the light section is arranged in the diffusion layer, the weight content of scattering particle in masterbatch is 4g/kg; The antiblock masterbatch is 40: 60 with the weight ratio that the light section is arranged in the antiblock layer, and the thickness of antiblock layer is 10% of diffusion barrier thickness; The light section has been used in the middle layer fully.The gained diffusion barrier is as shown in Figure 4, and film surface antiblock performance and optical property (transmittance, mist degree) are measured the result and seen table 3.
Embodiment 12
Prepare diffusion barrier by preceding method, the gained film thickness is 120um, single diffusion layer, and the scattering masterbatch is 35: 65 with the weight ratio that the light section is arranged in the diffusion layer, and the scattering particle particle diameter is 11-25um, and the weight content of particle in masterbatch is 8g/kg; Antiblock masterbatch described in the antiblock layer is 30: 70 with the weight ratio that the light section is arranged, and the thickness of antiblock layer is 10% of diffusion barrier thickness; The light section has been used in the middle layer fully.The gained diffusion barrier is as shown in Figure 4, and film surface antiblock performance and optical property (transmittance, mist degree) are measured the result and seen table 3.
Table 3
| Embodiment | 9 | 10 | 11 | 12 |
| Film thickness (um) | 100 | 200 | 150 | 120 |
| Type | Single diffusion layer | Single diffusion layer | Single diffusion layer | Single diffusion layer |
| Scattering masterbatch: the light material is arranged | 30∶70 | 50∶50 | 40∶60 | 35∶65 |
| Friction factor (moving/quiet) | 0.53/0.56 | 0.29/0.31 | 0.38/0.40 | 0.42/0.43 |
| Light transmission rate (%) | 93 | 88 | 92 | 92 |
| Mist degree (%) | 70 | 91 | 85 | 82 |
Embodiment 13
Used scattering particle is polystyrene (PS) particle in the present embodiment, and particle diameter is 1-20um; The used light section that has is PBT film grade polyester chip.
Prepare diffusion barrier by preceding method, the gained film thickness is 100um, the double diffusion layer, and the scattering masterbatch is 30: 70 with the proportioning that the light section is arranged in two skins, and the weight content of scattering particle in masterbatch is 6g/kg, and the light section has been used in the middle layer fully.The gained diffusion barrier is as shown in Figure 3, and film surface antiblock performance and optical property (transmittance, mist degree) are measured the result and seen table 4.
Embodiment 14
Scattering particle described in the present embodiment is polyester (PET) particle, and particle diameter is 10-30um; Said have the light section to be the pen film grade polyester chip.
Prepare diffusion barrier by preceding method, the gained film thickness is 200um, the double diffusion layer, and the scattering masterbatch is 50: 50 with the proportioning that the light section is arranged in two skins, and the weight content of scattering particle in masterbatch is 4g/kg, and the light section has been used in the middle layer fully.The gained diffusion barrier is as shown in Figure 5, and film surface antiblock performance and optical property (transmittance, mist degree) are measured the result and seen table 4.
Embodiment 15
Scattering particle described in the present embodiment is polycarbonate (PC) particle, and particle diameter is 10-30um; Said have the light section to be the pen film grade polyester chip.
Prepare diffusion barrier by preceding method, the gained film thickness is 150um, the double diffusion layer, and the scattering masterbatch is 40: 60 with the proportioning that the light section is arranged in two skins, and the weight content of scattering particle in masterbatch is 4g/kg, and the light section has been used in the middle layer fully.The gained diffusion barrier is as shown in Figure 5, and film surface antiblock performance and optical property (transmittance, mist degree) are measured the result and seen table 4.
Embodiment 16
Prepare diffusion barrier by preceding method, the gained film thickness is 120um, the double diffusion layer; The scattering masterbatch is 35: 65 with the proportioning that the light section is arranged in two skins; The scattering particle particle diameter is 11-25um, and the weight content of particle in masterbatch is 8g/kg, and the light section has been used in the middle layer fully.The gained diffusion barrier is as shown in Figure 5, and film surface antiblock performance and optical property (transmittance, mist degree) are measured the result and seen table 4.
Table 4
| Embodiment | 13 | 14 | 15 | 16 |
| Film thickness (μ m) | 100 | 200 | 150 | 120 |
| Type | The double diffusion layer | The double diffusion layer | The double diffusion layer | The double diffusion layer |
| Scattering masterbatch: the light material is arranged | 30∶70 | 50∶50 | 40∶60 | 35∶65 |
| Friction factor (moving/quiet) | 0.48/0.49 | 0.24/0.27 | 0.35/0.38 | 0.38/0.40 |
| Light transmission rate (%) | 93 | 90 | 93 | 93 |
| Mist degree (%) | 76 | 93 | 89 | 91 |
Among the following embodiment 17-24, said scattering particle particle diameter is 1-60um, comprises commercially available polycarbonate (PC) particle, polymethylmethacrylate (PMMA) particle or polystyrene (PS) particle; Polyester slice (or claiming to have the light section) is PET, PBT or pen film grade polyester chip, or modified poly ester.The film grade polyester chip that antiblock masterbatch section (product type is FG610) is produced for Chinese Yizheng Fiber Optical plant company limited.
Embodiment 17
Scattering particle described in the present embodiment is the potpourri of polymethylmethacrylate (PMMA) particle or polystyrene (PS) particle, and wherein the weight ratio of the two is 1: 1; Said have the light section to be modified PET.
Prepare diffusion barrier by preceding method, the gained film thickness is 80um, single diffusion layer, and the scattering masterbatch is 34: 66 with the weight ratio that the light section is arranged in the diffusion layer, and the scattering particle particle diameter is 1-15um, and the weight content of particle in masterbatch is 6g/kg; Antiblock masterbatch described in the antiblock layer is 32: 66 with the weight ratio that the light section is arranged; The light section has been used in the middle layer fully; The thickness in middle layer is 76% of diffusion barrier thickness, and the thickness of said diffusion layer is 12% of diffusion barrier thickness, and the thickness of antiblock layer is 12% of diffusion barrier thickness.The gained diffusion barrier is as shown in Figure 4, and film surface antiblock performance and optical property (transmittance, mist degree) are measured the result and seen table 5.
Embodiment 18
Prepare diffusion barrier by preceding method, the gained film thickness is 130um, single diffusion layer, and the scattering masterbatch is 42: 58 with the weight ratio that the light section is arranged in the diffusion layer, and the scattering particle particle diameter is 1-10um, and the weight content of particle in masterbatch is 5g/kg; The antiblock masterbatch is 35: 65 with the weight ratio that the light section is arranged in the antiblock layer; The light section has been used in the middle layer fully; The thickness in middle layer is 88% of diffusion barrier thickness, and the thickness of said diffusion layer is 6% of diffusion barrier thickness, and the thickness of antiblock layer is 6% of diffusion barrier thickness.The gained diffusion barrier is as shown in Figure 2, and film surface antiblock performance and optical property (transmittance, mist degree) are measured the result and seen table 5.
Embodiment 19
Prepare diffusion barrier by preceding method, the gained film thickness is 170um, single diffusion layer, and the scattering masterbatch is 38: 62 with the weight ratio that the light section is arranged in the diffusion layer, and the scattering particle particle diameter is 11-30um, and the weight content of particle in masterbatch is 7g/kg; The antiblock masterbatch is 36: 64 with the weight ratio that the light section is arranged in the antiblock layer; The light section has been used in the middle layer fully; The thickness in middle layer is 78% of diffusion barrier thickness, and the thickness of said diffusion layer is 11% of diffusion barrier thickness, and the thickness of antiblock layer is 11% of diffusion barrier thickness.The gained diffusion barrier is as shown in Figure 4, and film surface antiblock performance and optical property (transmittance, mist degree) are measured the result and seen table 5.
Embodiment 20
Prepare diffusion barrier by preceding method, the gained film thickness is 230um, single diffusion layer, and the scattering masterbatch is 45: 55 with the weight ratio that the light section is arranged in the diffusion layer, and the scattering particle particle diameter is 20-60um, and the weight content of particle in masterbatch is 5g/kg; The antiblock masterbatch is 38: 62 with the weight ratio that the light section is arranged in the antiblock layer; The light section has been used in the middle layer fully; The thickness in middle layer is 84% of diffusion barrier thickness, and the thickness of said diffusion layer is 8% of diffusion barrier thickness, and the thickness of antiblock layer is 8% of diffusion barrier thickness.The gained diffusion barrier is as shown in Figure 4, and film surface antiblock performance and optical property (transmittance, mist degree) are measured the result and seen table 5.
Table 5
| Embodiment | 17 | 18 | 19 | 20 |
| Film thickness (um) | 80 | 130 | 170 | 230 |
| Type | Single diffusion layer | Single diffusion layer | Single diffusion layer | Single diffusion layer |
| Scattering masterbatch: the light material is arranged | 34∶66 | 42∶58 | 38∶62 | 45∶55 |
| Friction factor (moving/quiet) | 0.42/0.45 | 0.35/0.37 | 0.41/0.43 | 0.30/0.33 |
| Light transmission rate (%) | 92 | 92 | 92 | 93 |
| Mist degree (%) | 80 | 88 | 90 | 90 |
Embodiment 21
Scattering particle described in the present embodiment is the potpourri of polymethylmethacrylate (PMMA) particle or polystyrene (PS) particle, and wherein the weight ratio of the two is 1: 1; Said have the light section to be modified PET.
Prepare diffusion barrier by preceding method, the gained film thickness is 80um, the double diffusion layer, and the scattering masterbatch is 34: 66 with the proportioning that the light section is arranged in two skins, and the scattering particle particle diameter is 1-15um, and the weight content of particle in masterbatch is 6g/kg; The light section has been used in the middle layer fully; The thickness in middle layer is 76% of diffusion barrier thickness, and the thickness of said diffusion layer is 12% of diffusion barrier thickness.The gained diffusion barrier is as shown in Figure 5, and film surface antiblock performance and optical property (transmittance, mist degree) are measured the result and seen table 6.
Embodiment 22
Prepare diffusion barrier by preceding method, the gained film thickness is 130um, the double diffusion layer, and the scattering masterbatch is 42: 58 with the proportioning that the light section is arranged in two skins, and the scattering particle particle diameter is 1-10um, and the weight content of particle in masterbatch is 5g/kg; The light section has been used in the middle layer fully; The thickness in middle layer is 88% of diffusion barrier thickness, and the thickness of said diffusion layer is 6% of diffusion barrier thickness.The gained diffusion barrier is as shown in Figure 3, and film surface antiblock performance and optical property (transmittance, mist degree) are measured the result and seen table 6.
Embodiment 23
Prepare diffusion barrier by preceding method, the gained film thickness is 170um, the double diffusion layer, and the scattering masterbatch is 38: 62 with the proportioning that the light section is arranged in two skins, and the scattering particle particle diameter is 11-30um, and the weight content of particle in masterbatch is 7g/kg; The light section has been used in the middle layer fully; The thickness in middle layer is 78% of diffusion barrier thickness, and the thickness of said diffusion layer is 11% of diffusion barrier thickness.The gained diffusion barrier is as shown in Figure 5, and film surface antiblock performance and optical property (transmittance, mist degree) are measured the result and seen table 6.
Embodiment 24
Prepare diffusion barrier by preceding method, the gained film thickness is 230um, the double diffusion layer, and the scattering masterbatch is 45: 55 with the proportioning that the light section is arranged in two skins, and the scattering particle particle diameter is 20-60um, and the weight content of particle in masterbatch is 5g/kg; The light section has been used in the middle layer fully; The thickness in middle layer is 84% of diffusion barrier thickness, and the thickness of said diffusion layer is 8% of diffusion barrier thickness.The gained diffusion barrier is as shown in Figure 5, and film surface antiblock performance and optical property (transmittance, mist degree) are measured the result and seen table 6.
Table 6
| Embodiment | 21 | 22 | 23 | 24 |
| Film thickness (μ m) | 80 | 130 | 170 | 230 |
| Type | The double diffusion layer | The double diffusion layer | The double diffusion layer | The double diffusion layer |
| Scattering masterbatch: the light material is arranged | 34∶66 | 42∶58 | 38∶62 | 45∶55 |
| Friction factor (moving/quiet) | 0.38/0.41 | 0.29/0.33 | 0.38/0.39 | 0.29/0.32 |
| Light transmission rate (%) | 93 | 94 | 92 | 94 |
| Mist degree (%) | 86 | 93 | 91 | 93 |
Among the following embodiment 25-32, raw material includes light section (product type is FG600), antiblock masterbatch section (product type is FG610), the film grade polyester chip that all adopts Chinese Yizheng Fiber Optical plant company limited to produce.
Embodiment 25
Scattering particle described in the present embodiment is polymethylmethacrylate (PMMA) particle; The general assembly (TW) of said scattering particle is 100%; Wherein: particle diameter is that the particle of 2-10um accounts for 25%; Particle diameter is that the particle of 11-20um accounts for 25%, and particle diameter is that the particle of 21-30um accounts for 25%, and particle diameter is that the particle of 31-40um accounts for 25%.Above-mentioned number percent is weight percentage.
Prepare diffusion barrier by preceding method, the gained film thickness is 200um, single diffusion layer, and the scattering masterbatch is 35: 65 with the weight ratio that the light section is arranged in the diffusion layer, the weight content of scattering particle in masterbatch is 5g/kg; Another skin is the antiblock layer, and wherein, the antiblock masterbatch is 38: 62 with the weight ratio that the light section is arranged, and the light section has been used in the middle layer fully; The thickness in middle layer is 78% of diffusion barrier thickness, and the thickness of diffusion layer is 11% of diffusion barrier thickness, and the thickness of antiblock layer is 11% of diffusion barrier thickness.The gained diffusion barrier is as shown in Figure 4, and film surface antiblock performance and optical property (transmittance, mist degree) are measured the result and seen table 7.
Embodiment 26
Scattering particle described in the present embodiment is the PS particle; The general assembly (TW) of said scattering particle is 100%, and wherein: particle diameter is that the particle of 1-15um accounts for 40%, and particle diameter is that the particle of 16-30um accounts for 10%; Particle diameter is that the particle of 31-45um accounts for 10%, and particle diameter is that the particle of 46-60um accounts for 40%.Above-mentioned number percent is weight percentage.
Prepare diffusion barrier by preceding method, the gained film thickness is 250um, single diffusion layer, and the scattering masterbatch is 45: 55 with the weight ratio that the light section is arranged in the diffusion layer, the weight content of scattering particle in masterbatch is 5g/kg; Another skin is the antiblock layer, and wherein, the antiblock masterbatch is 38: 62 with the weight ratio that the light section is arranged; The light section has been used in the middle layer fully.The thickness in middle layer is 82% of diffusion barrier thickness, and the thickness of said diffusion layer is 9% of diffusion barrier thickness, and the thickness of antiblock layer is 9% of diffusion barrier thickness.The gained diffusion barrier is as shown in Figure 4, and film surface antiblock performance and optical property (transmittance, mist degree) are measured the result and seen table 7.
Embodiment 27
Scattering particle described in the present embodiment is the PC particle; The general assembly (TW) of said scattering particle is 100%, and wherein: particle diameter is that the particle of 1-15um accounts for 25%, and particle diameter is that the particle of 16-30um accounts for 25%; Particle diameter is that the particle of 31-45um accounts for 25%, and particle diameter is that the particle of 46-60um accounts for 25%.Said number percent is weight percentage.
Prepare diffusion barrier by preceding method, the gained film thickness is 210um, single diffusion layer, and the scattering masterbatch is 40: 60 with the weight ratio that the light section is arranged in the diffusion layer, the weight content of scattering particle in masterbatch is 5g/kg; Another skin is the antiblock layer, and wherein, the antiblock masterbatch is 38: 62 with the weight ratio that the light section is arranged; The light section has been used in the middle layer fully; The thickness in middle layer is 76% of diffusion barrier thickness, and the thickness of said diffusion layer is 12% of diffusion barrier thickness, and the thickness of antiblock layer is 12% of diffusion barrier thickness.The gained diffusion barrier is as shown in Figure 4, and film surface antiblock performance and optical property (transmittance, mist degree) are measured the result and seen table 7.
Embodiment 28
The general assembly (TW) of following scattering particle is 100%, and wherein: particle diameter is that the particle of 2-10um accounts for 30%, and particle diameter is that the particle of 11-20um accounts for 20%, and particle diameter is that the particle of 21-30um accounts for 20%, and particle diameter is that the particle of 31-40um accounts for 30%.Said number percent is weight percentage.
Prepare diffusion barrier by preceding method, the gained film thickness is 180um, single diffusion layer, and the scattering masterbatch is 46: 54 with the weight ratio that the light section is arranged in the diffusion layer, the weight content of scattering particle in masterbatch is 5g/kg; Another skin is the antiblock layer, and wherein, the antiblock masterbatch is 38: 62 with the weight ratio that the light section is arranged; The light section has been used in the middle layer fully; The thickness in middle layer is 84% of diffusion barrier thickness, and the thickness of said diffusion layer is 8% of diffusion barrier thickness, and the thickness of antiblock layer is 8% of diffusion barrier thickness.The gained diffusion barrier is as shown in Figure 4, and film surface antiblock performance and optical property (transmittance, mist degree) are measured the result and seen table 7.
Table 7
| Embodiment | 25 | 26 | 27 | 28 |
| Film thickness (um) | 200 | 250 | 210 | 180 |
| Type | Single diffusion layer | Single diffusion layer | Single diffusion layer | Single diffusion layer |
| Scattering masterbatch: the light material is arranged | 35∶65 | 45∶55 | 40∶60 | 46∶54 |
| Friction factor (moving/quiet) | 0.42/0.43 | 0.30/0.34 | 0.38/0.39 | 0.28/0.31 |
| Light transmission rate (%) | 92 | 93 | 92 | 93 |
| Mist degree (%) | 83 | 90 | 89 | 91 |
Embodiment 29
Scattering particle described in the present embodiment is polymethylmethacrylate (PMMA) particle; The general assembly (TW) of said scattering particle is 100%; Wherein: particle diameter is that the particle of 2-10um accounts for 25%; Particle diameter is that the particle of 11-20um accounts for 25%, and particle diameter is that the particle of 21-30um accounts for 25%, and particle diameter is that the particle of 31-40um accounts for 25%.Above-mentioned number percent is weight percentage.
Prepare diffusion barrier by preceding method, the gained film thickness is 200um, the double diffusion layer, and the scattering masterbatch is 35: 65 with the proportioning that the light section is arranged in two skins, the weight content of scattering particle in masterbatch is 5g/kg; The light section has been used in the middle layer fully; The thickness in middle layer is 78% of diffusion barrier thickness, and the thickness of diffusion layer is 11% of diffusion barrier thickness.The gained diffusion barrier is as shown in Figure 5, and film surface antiblock performance and optical property (transmittance, mist degree) are measured the result and seen table 8.
Embodiment 30
Scattering particle described in the present embodiment is the PS particle; The general assembly (TW) of said scattering particle is 100%, and wherein: particle diameter is that the particle of 1-15um accounts for 40%, and particle diameter is that the particle of 16-30um accounts for 10%; Particle diameter is that the particle of 31-45um accounts for 10%, and particle diameter is that the particle of 46-60um accounts for 40%.Above-mentioned number percent is weight percentage.
Prepare diffusion barrier by preceding method, the gained film thickness is 250um, the double diffusion layer, and the scattering masterbatch is 45: 55 with the proportioning that the light section is arranged in two skins, the weight content of scattering particle in masterbatch is 5g/kg; The light section has been used in the middle layer fully; The thickness in middle layer is 82% of diffusion barrier thickness, and the thickness of said diffusion layer is 9% of diffusion barrier thickness.The gained diffusion barrier is as shown in Figure 5, and film surface antiblock performance and optical property (transmittance, mist degree) are measured the result and seen table 8.
Embodiment 31
Scattering particle described in the present embodiment is the PC particle; The general assembly (TW) of said scattering particle is 100%, and wherein: particle diameter is that the particle of 1-15um accounts for 25%, and particle diameter is that the particle of 16-30um accounts for 25%; Particle diameter is that the particle of 31-45um accounts for 25%, and particle diameter is that the particle of 46-60um accounts for 25%.Said number percent is weight percentage.
Prepare diffusion barrier by preceding method, the gained film thickness is 210um, the double diffusion layer, and the scattering masterbatch is 40: 60 with the proportioning that the light section is arranged in two skins, the weight content of scattering particle in masterbatch is 5g/kg; The light section has been used in the middle layer fully; The thickness in middle layer is 76% of diffusion barrier thickness, and the thickness of said diffusion layer is 12% of diffusion barrier thickness.The gained diffusion barrier is as shown in Figure 5, and film surface antiblock performance and optical property (transmittance, mist degree) are measured the result and seen table 6.
Embodiment 32
The general assembly (TW) of following scattering particle is 100%, and wherein: particle diameter is that the particle of 2-10um accounts for 30%, and particle diameter is that the particle of 11-20um accounts for 20%, and particle diameter is that the particle of 21-30um accounts for 20%, and particle diameter is that the particle of 31-40um accounts for 30%.Said number percent is weight percentage.
Prepare diffusion barrier by preceding method, the gained film thickness is 180um, the double diffusion layer, and the scattering masterbatch is 46: 54 with the proportioning that the light section is arranged in two skins, the weight content of scattering particle in masterbatch is 5g/kg; The light section has been used in the middle layer fully; The thickness in middle layer is 84% of diffusion barrier thickness, and the thickness of said diffusion layer is 8% of diffusion barrier thickness.The gained diffusion barrier is as shown in Figure 5, and film surface antiblock performance and optical property (transmittance, mist degree) are measured the result and seen table 8.
Table 8
| Embodiment | 29 | 30 | 31 | 32 |
| Film thickness (μ m) | 200 | 250 | 210 | 180 |
| Type | The double diffusion layer | The double diffusion layer | The double diffusion layer | The double diffusion layer |
| Scattering masterbatch: the light material is arranged | 35∶65 | 45∶55 | 40∶60 | 46∶54 |
| Friction factor (moving/quiet) | 0.40/0.43 | 0.26/0.28 | 0.35/0.37 | 0.28/0.29 |
| Light transmission rate (%) | 93 | 93 | 93 | 93 |
| Mist degree (%) | 86 | 94 | 92 | 94 |
Test data in above-mentioned table 1 to the table 8 shows, optical diffusion provided by the invention, and resistance to blocking, the performance of light transmission rate and mist degree is all better.
The above is merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention.Every equalization that content is done according to the present invention changes and modifies, and all is encompassed in the claim of the present invention.
Claims (8)
1. an optical diffusion is characterized in that, said diffusion barrier is a three-decker, comprises base material, and at least one side in said base material both sides is provided with diffusion layer, and said diffusion layer includes scattering particle, and the particle diameter of said scattering particle is 1-60 μ m.
2. an optical diffusion as claimed in claim 1 is characterized in that, a side of said base material is provided with diffusion layer, and opposite side is provided with the antiblock layer, and said antiblock layer includes the antiblock particle, and the particle diameter of said antiblock particle is 1-4 μ m.
3. an optical diffusion as claimed in claim 1 is characterized in that, the thickness of said optical diffusion is 75-250 μ m, and the thickness of said base material is the 76%-88% of diffusion barrier thickness, and the thickness of said diffusion layer is the 6%-12% of diffusion barrier thickness.
4. an optical diffusion as claimed in claim 1 is characterized in that, said diffusion barrier is three-layer co-extruded structure.
5. an optical diffusion as claimed in claim 1 is characterized in that, said scattering particle particle diameter is 2-40 μ m.
6. an optical diffusion as claimed in claim 3 is characterized in that, the thickness of said optical diffusion is 100-200 μ m.
7. an optical diffusion as claimed in claim 3 is characterized in that, the thickness of said optical diffusion is 75-150 μ m.
8. an optical diffusion as claimed in claim 3 is characterized in that, the thickness of said optical diffusion is 150-250 μ m.
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| CN2011205716429U CN202383315U (en) | 2011-12-31 | 2011-12-31 | Optical diffusion film |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102540289A (en) * | 2011-12-31 | 2012-07-04 | 宁波长阳科技有限公司 | Optical diffusion film and preparation method thereof |
| CN103345011A (en) * | 2013-06-28 | 2013-10-09 | 宁波激智科技股份有限公司 | Diffusion film applicable to sidelight type backlight module |
| CN106168689A (en) * | 2016-07-11 | 2016-11-30 | 浙江元泰特种膜有限公司 | A kind of highlighted optical film producing method of high fog |
-
2011
- 2011-12-31 CN CN2011205716429U patent/CN202383315U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102540289A (en) * | 2011-12-31 | 2012-07-04 | 宁波长阳科技有限公司 | Optical diffusion film and preparation method thereof |
| CN103345011A (en) * | 2013-06-28 | 2013-10-09 | 宁波激智科技股份有限公司 | Diffusion film applicable to sidelight type backlight module |
| CN103345011B (en) * | 2013-06-28 | 2015-08-05 | 宁波激智科技股份有限公司 | A kind of diffusion barrier being applied to side-light backlight module |
| CN106168689A (en) * | 2016-07-11 | 2016-11-30 | 浙江元泰特种膜有限公司 | A kind of highlighted optical film producing method of high fog |
| CN106168689B (en) * | 2016-07-11 | 2019-05-14 | 浙江元泰特种膜有限公司 | A kind of highlighted optical film producing method of high fog |
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