CN101738649B - Composite optical film structure with multiple coatings - Google Patents
Composite optical film structure with multiple coatings Download PDFInfo
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- CN101738649B CN101738649B CN200810305478XA CN200810305478A CN101738649B CN 101738649 B CN101738649 B CN 101738649B CN 200810305478X A CN200810305478X A CN 200810305478XA CN 200810305478 A CN200810305478 A CN 200810305478A CN 101738649 B CN101738649 B CN 101738649B
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Abstract
The invention relates to a composite optical film structure with multiple coatings. With a diffusion layer with an interface microstructure as a photo diffusion mechanism, the invention comprises a transparent base material, a multiple coating and a protection coating; wherein a diffusion layer combination of the inner layer of the multiple coating is provided with a diffusion layer with a port microstructure, a condensation layer at the first surface layer of the multiple coating is provided with an optical rotation microstructure. On the basis, composite design is carried out by light source diffusion as a result of the multiple coating technology and condensation effect; with the optical film structure integrated into an optical film, material cost can be effectively reduced; and when the diffusion layer with the port microstructure serves as the photo diffusion mechanism, not only brightness performance can be effectively improved, meanwhile quality variables created by dispersion of doping ions and film material warpage and the like can also be reduced; as a result, while assembly of a backlight module is simplified to improve assembly efficiency thereof, film material quality and optical property of the composite optical film can also be improved.
Description
Technical field:
The present invention relates to a kind of composite optical film structure with multiple coatings, refer to that especially a kind of diffusion layer with tool interface microstructure can provide the blooming piece that uses in the backlight module of high brightness and high-quality light source as the light flooding mechanism.
Background technology:
(Liquid Crystal Display, LCD) the liquid crystal indicator structure of middle tool backlight mainly comprises the faceplate part of front and the light source module part at the back side to the widespread use LCD at present.Wherein the part of panel includes liquid crystal, alignment film, ITO electro-conductive glass, colored filter, polaroid and drive IC module etc. and forms, and colour picture colour developing control can be provided; The part of backlight module then includes cold-cathode tube (Cold Cathode Fluorescent Lamp; CCFL) or light emitting diode (Light-Emitting Diode; LED) etc. lamp source, reflector plate, LGP, diffuser plate, diffusion sheet and concentration piece etc. can provide high brightness, high-quality demonstration to use light source.Because the technological emphasis of backlight module is how effectively line source (CCFL) and pointolite (LED) to be converted into the area source of high uniformity, and under the use amount of minimum lamp source, can obtain positive visual angle (On-axis) briliancy of high-gain simultaneously.Therefore, wherein the use of reflector plate can be with the light source recycling of reflection with scattering, with abundant lifting light source service efficiency; Using of LGP and diffuser plate can guide the high directivity bright dipping as the vertical panel face with light going direction, and eliminates lamp source image (Lamp Mura) simultaneously; The use of diffusion sheet can increase the homogeneity of area source and eliminate simultaneously or reduce institutes such as film material itself or assembling process and cause the optical visible flaw; The use of concentration piece then can promote the luminance gain at positive visual angle significantly.Therefore optimized backlight module design will cause cost performance splendid on backlight quality and the cost benefit.In addition, use except increasing cost in too much lamp source, also can cause heat generation to increase; And then the life-span and the optical quality of impairment associated materials; And for portable apparatus, also can cause the electric energy consume to increase, will be unfavorable for reducing cost at present and light-weighted designer trends.Because under the worldwide trend of carbon reduction, how to integrate optical characteristics more effectively, be important technical task already.
About the structure of above-mentioned diffusion sheet, it normally is coated with diffusion particle on a transparent base, can produce the effect of scattering when light is passed through, and then causes the atomizing of light source, reaches the homogeneity that improves distribution of light by this.And the structure of above-mentioned concentration piece; Then normally on transparent base, be coated with one deck and have the microstructure that light beam is concentrated ability; Its modal microstructure that is designed to prism-type (Prism), this will utilize luminous flux to improve the brightness at the positive visual angle of LCD fully.
Again, present composite optical film design, shown in figure 10; It announces the 6th, 280 for United States Patent (USP), and No. 063 institute takes off; It mainly is the two sides of above-mentioned two kinds of structural designs being coated transparent base 50 respectively; The meaning i.e. top of this transparent base 50 is the prism-type structure 51 of tool light harvesting, and the below of this transparent base 50 then evenly disperses the diffuse layer structure 52 of diffusion particle 521 for tool, reach the light diffusion effect by this.Yet; So design according to above-mentioned composite optical film 5; Not only be prone to cause the warpage variability control difficulty of film material, and the dispersiveness of its diffusion particle also has complicated technical problems such as inhomogeneity variation easily, the particle that is coated with in addition is prone to cause the surperficial scratch flaw of underlying blooming piece; Simultaneously, its light diffusion particle also makes light transmittance descend easily, and then causes the impairment of complex optical film on optical characteristics.So, generally can't satisfy the user and when reality is used, expect.
Summary of the invention:
Technical matters to be solved by this invention is: to the deficiency of above-mentioned prior art; A kind of composite optical film structure with multiple coatings is provided, as the light flooding mechanism blooming piece that uses in the backlight module of high brightness and high-quality light source can be provided with the diffusion layer of tool interface microstructure.
Secondary objective of the present invention is; The design that utilizes multi-layer coated technology that the diffusion and the spotlight effect of light source are done combined type; Mat is integrated in single blooming piece can effectively reduce material cost; And the diffusion layer of tool interface microstructure as the light flooding mechanism under, not only can promote the briliancy performance effectively, also can reduce simultaneously because of the quality due to doping dispersion of nano-particles and the film material warpage etc. become because of and particle be coated with due to the problem of underlying blooming piece scratch flaw.
Another object of the present invention is to, can also promote the membrane material amount and the optical characteristics of this composite optical film in the assembling of simplifying backlight module with when improving its packaging efficiency.
In order to solve the problems of the technologies described above; The technical scheme that the present invention adopted is: a kind of composite optical film structure with multiple coatings; Be characterized in:, comprise transparent base, multi-layer coated and protection coating layer, wherein: this transparent base to have diffusion layer in order to the type interface microstructure at random of incident ray being done the scattering processing as the light flooding mechanism; Have two opposite faces, and its thickness is between 30 μ m to 300 μ m; This multi-layer coated internal layer has the diffusion layer combination; This diffusion layer combination is positioned on these transparent base two opposite faces one side wherein; And this diffusion layer combination is made up of at least one diffusion layer that contains the interface microstructure; The coating thickness of those diffusion layers is between 1 μ m to 50 μ m, and the roughness value of its interface microstructure is more than the 0.5 μ m; This multi-layer coated top layer has light collecting layer, and this light collecting layer is positioned in this diffusion layer combination, and this diffusion layer combination is between this light collecting layer and this transparent base, and wherein this light collecting layer is in order to make the light of scattering the collection optical activity microstructure of centralization processing; This protects coating layer, is positioned at another opposite face of this transparent base, in order to provide integrally-built antistatic and resistance to wear; Wherein, the refractive index of this diffusion layer combination is between 1.3 to 1.6, and the refractive index of this light collecting layer is between 1.4 to 1.7.
According to another preferred embodiment of the present invention; A kind of composite optical film structure with multiple coatings; Be characterized in:, comprise transparent base, multi-layer coated and protection coating layer, wherein: this transparent base to have diffusion layer in order to the type interface microstructure at random of incident ray being done the scattering processing as the light flooding mechanism; Have two opposite faces, and its thickness is between 30 μ m to 300 μ m; This is multi-layer coated to have the diffusion layer combination; This diffusion layer combination is positioned on these transparent base two opposite faces one side wherein; And this diffusion layer combination is made up of at least one diffusion layer that contains the interface microstructure; The coating thickness of those diffusion layers is between 1 μ m to 50 μ m, and the roughness value of its interface microstructure is more than the 0.5 μ m; This is multi-layer coated to have light collecting layer, and this light collecting layer is positioned on another opposite face of this transparent base, and wherein this light collecting layer is in order to make the light of scattering the collection optical activity microstructure that centralization is handled; This protects coating layer, is positioned in the combination of this diffusion layer, in order to provide integrally-built antistatic and resistance to wear; And wherein, the refractive index of this diffusion layer combination is between 1.3 to 1.6, and the refractive index of this light collecting layer is between 1.4 to 1.7.
According to the present invention's preferred embodiment again; A kind of composite optical film structure with multiple coatings; Be characterized in:, comprise transparent base, multi-layer coated and protection coating layer, wherein: this transparent base to have diffusion layer in order to the type interface microstructure at random of incident ray being done the scattering processing as the light flooding mechanism; Have two opposite faces, and its thickness is between 30 μ m to 300 μ m; This is multi-layer coated to have the combination of two diffusion layers; Be positioned on two opposite faces of this transparent base; And this diffusion layer combination is made up of at least one diffusion layer that contains the interface microstructure; The coating thickness of those diffusion layers is between 1 μ m to 50 μ m, and the roughness value of its interface microstructure is more than the 0.5 μ m; This is multi-layer coated to have light collecting layer, is positioned on one of them of this two diffusion layers combination, and wherein this light collecting layer is in order to make the light of scattering the collection optical activity microstructure that centralization is handled; This protects coating layer, is positioned at wherein on another of this two diffusion layer combination, in order to provide integrally-built antistatic and resistance to wear; And wherein, the refractive index of this diffusion layer combination is between 1.3 to 1.6, and the refractive index of this light collecting layer is between 1.4 to 1.7.
So, the diffusion layer with tool interface microstructure can provide the blooming piece that uses in the backlight module of high brightness and high-quality light source as the light flooding mechanism; The design that utilizes multi-layer coated technology that the diffusion and the spotlight effect of light source are done combined type; Mat is integrated in single blooming piece can effectively reduce material cost; And the diffusion layer of tool interface microstructure as the light flooding mechanism under; Not only can promote briliancy performance effectively, also can reduce simultaneously because of the quality due to doping dispersion of nano-particles and the film material warpage etc. become because of and particle be coated with due to the problem of underlying blooming piece scratch flaw; Also can also promote the membrane material amount and the optical characteristics of this composite optical film in the assembling of simplifying backlight module with when improving its packaging efficiency.
Description of drawings:
Fig. 1 is the schematic cross section of the present invention's one preferred embodiment.
Fig. 2 is the schematic cross section of another preferred embodiment of the present invention.
Fig. 3 is the present invention's schematic cross section of a preferred embodiment again.
Fig. 4 is the enlarged diagram of A among Fig. 1.
Fig. 5 is a type interface microstructure schematic perspective view at random of the present invention.
Fig. 6 is a prism-type interface microstructure schematic perspective view of the present invention.
Fig. 7 is a pyramid type interface microstructure schematic perspective view of the present invention.
Fig. 8 is a lens-type interface microstructure schematic perspective view of the present invention.
Fig. 9 is a pyramid interface microstructure schematic perspective view of the present invention.
Figure 10 is known composite optical film schematic cross section.
Label declaration:
Composite optical film structure with multiple coatings 1 transparent base 11
Multi-layer coated 12 diffusion layers combination 120
Diffusion layer 121,122 interface microstructure 121a, 121b
Light collecting layer 123 collection optical activity microstructure 123a
Protection coating layer 13 composite optical film structure with multiple coatings 2
Diffusion layer makes up 220 diffusion layers 221,222
Collection optical activity microstructure 223a protection coating layer 23
Composite optical film structure with multiple coatings 3 transparent bases 31
Multi-layer coated 32 diffusion layers combination 320,321
Diffusion layer 322,323 interface microstructure 322a, 323a
Light collecting layer 324 collection optical activity microstructure 324a
Prism-type 4b pyramid type 4c
Lens- type 4d pyramid 4e
Composite optical film 5 transparent bases 50
Prism-type structure 51 diffuse layer structures 52
Embodiment:
The present invention is a kind of composite optical film structure with multiple coatings, it is characterized in that diffusion layer with tool interface microstructure is as the light flooding mechanism.The present invention utilizes multi-layer coated technology; Diffusion layer interface control (Interface-Dominating) microstructure (Microstructure) design; And be equipped with refractive index difference between effective coating layer to obtain to provide the material of light diffusion effect; And the collection optical activity microstructure of on structure mechanism, also utilizing top layer is done centralization with the light of scattering and is handled, and uses the brightness value that improves positive visual angle (On-axis).Above-mentioned interface control microstructure design does not have particular restriction; It is such as but not limited to the interface microstructure design of type at random (Random); And the roughness value of its interface microstructure (Ra) in following examples; Wishing to get certain mist degree effect, is that it is controlled at more than 0.5 micron (μ m), and being good greater than 1 μ m; Can with this interface microstructure design the microstructure of prism-type (Prism), pyramid type (Cone), lens-type (Lens) and pyramid different tool light collecting light abilities such as (Pyramid) also in addition; And except the structure of above-mentioned type at random; Other structure is handled the function with the diffusion of increase light in the sags and crests that its body structure surface has more refinement property at random destruction, and then can obtain the composite optical film material of tool different optical characteristic.The description of present embodiment is in order to explain that the diffusion layer with tool interface microstructure is the design concept of light flooding mechanism, the viewpoint that should not be regarded as limiting, and by following concrete embodiment, so that embodiment of the present invention to be described.
See also shown in Figure 1ly, be the schematic cross section of the present invention's one preferred embodiment.As shown in the figure: in present embodiment, composite optical film structure with multiple coatings 1 of the present invention is characterized in that diffusion layer with tool type interface at random microstructure as the light flooding mechanism, comprises transparent base 11, multi-layer coated 12 and protection coating layer 13.
This transparent base 11 has two opposite faces.
The diffusion layer combination 120 of these multi-layer coated 12 internal layers is positioned on 11 liang of opposite faces of this transparent base one side wherein, in order to the light of incident is done the scattering processing.Wherein this diffusion layer combination 120 has 121,122 compositions of at least more than one diffusion layer that contains interface microstructure 121a, 121b; The coating thickness of those diffusion layers 121,122 and can further add the particulate material of inorganic nature or organic property between 1 μ m to 50 μ m.
The light collecting layer 123 on these multi-layer coated 12 top layers is positioned in this diffusion layer combination 120, and this diffusion layer combination 120 is between this light collecting layer 123 and this transparent base 11.Wherein this light collecting layer 123 has in order to the light of scattering being made the collection optical activity microstructure 123a that centralization is handled, and can be prism-type, pyramid type, lens-type and pyramid.
This protection coating layer 13 is positioned at another opposite face of this transparent base 11, in order to provide integrally-built antistatic and resistance to wear.The above constitutes a brand-new composite optical film structure with multiple coatings 1.
Wherein, The material refractive index of above-mentioned these multi-layer coated 12 employings, for the highest, the refractive index with orlop diffusion layer 121 in the diffusion layer of the internal layer combination 120 is minimum with this light collecting layer 123; The refractive index of other diffusion layer 122 is then between these two layers; In addition also can be in the material of 121 and 123 employing highs index of refraction, 122 adopt the material of low-refractions, so that the different optical characteristics performance to be provided.
See also shown in Figure 2ly, be the schematic cross section of another preferred embodiment of the present invention.As shown in the figure: in present embodiment, composite optical film structure with multiple coatings 2 of the present invention is characterized in that diffusion layer with tool type interface at random microstructure as the light flooding mechanism, comprises transparent base 21, multi-layer coated 22 and protection coating layer 23.
This transparent base 21 has two opposite faces.
This diffusion layer of multi-layer coated 22 combination 220 is positioned on 21 liang of opposite faces of this transparent base one side wherein, is in order to the light of incident is made the interface microstructure of scattering processing.Wherein this diffusion layer combination 220 has 221,222 compositions of at least more than one diffusion layer that contains interface microstructure 221a, 222a; The coating thickness of those diffusion layers 221,222 and can further add the particulate material of inorganic nature or organic property between 1 μ m to 50 μ m.
This light collecting layer of multi-layer coated 22 223; Be positioned on another opposite face of this transparent base 21; Wherein this light collecting layer 223 is in order to the light of scattering being made the collection optical activity microstructure 223a that centralization is handled, and can be prism-type, pyramid type, lens-type and pyramid.
This protection coating layer 23 is positioned in this diffusion layer combination 220, in order to provide integrally-built antistatic and resistance to wear.The above constitutes another brand-new composite optical film structure with multiple coatings 2.
Wherein, The material refractive index of each diffusion layer 221,222 is with minimum near the refractive index of this transparent base 21 in above-mentioned this diffusion layer combination 220; The highest from these transparent base 21 outermost refractive indexes; In addition also can be in the material of 221 and 23 employing highs index of refraction, 222 adopt the material of low-refractions to show so that different optical characteristics to be provided.
See also shown in Figure 3ly, be the present invention's schematic cross section of a preferred embodiment again.As shown in the figure: in present embodiment, composite optical film structure with multiple coatings 3 of the present invention is characterized in that diffusion layer with tool type interface at random microstructure as the light flooding mechanism, comprises transparent base 31, multi-layer coated 32 and protection coating layer 33.
This transparent base 31 has two opposite faces.
This two diffusion layers of multi-layer coated 32 combination 320,321 is positioned on two opposite faces of this transparent base 31, is in order to the light of incident is made the interface microstructure of scattering processing.Wherein this diffusion layer combination 320,321 has 322,323 compositions of at least more than one diffusion layer that contains interface microstructure 322a, 323a; The coating thickness of those diffusion layers 322,323 and can further add the particulate material of inorganic nature or organic property between 1 μ m to 50 μ m.
This light collecting layer of multi-layer coated 32 324; Be positioned at this two diffusion layer combination 320,321 on one of them; Wherein this light collecting layer 324 is in order to scattering and light being made the collection optical activity microstructure 324a that centralization is handled, and can be prism-type, pyramid type, lens-type and pyramid.
This protection coating layer 33 is positioned at this two diffusion layer combination 320,321 on another, in order to provide integrally-built antistatic and resistance to wear.The above constitutes a brand-new composite optical film structure with multiple coatings 3 again.
Among above-mentioned Fig. 1～Fig. 3; The combination of the diffusion layer of its multi-layer coated internal layer can obtain the structure of one or more diffusion layers according to the quantity of its coating, and for example 2 layers of coating can get (containing light collecting layer) structure of 1 diffusion layer of tool; 3 layers of coating can get the structure of 2 diffusion layers of tool, and the rest may be inferred.
See also shown in Figure 4ly, be the local enlarged diagram of A among Fig. 1.As shown in the figure, and please consult Fig. 1 simultaneously: as, to be example with the composite optical film structure with multiple coatings 1 of Fig. 1 as the present invention during in assembling.The material that this transparent base 11 uses; Knowledge is known usually in the technical field under can be for this reason, and can be the glass or the plastic material of the high optics penetrance of tool, for example polyethylene terephthalate (Polyethylene Terephthalate; PET), polycarbonate (Polycarbonate; PC) or polymethylmethacrylate (Polymethylmethacrylate PMMA) etc., and is good with the thickness range between 30 μ m to 300 μ m.
In multi-layer coated 12 of these transparent base 11 tops; The light collecting layer 123 that includes the collection optical activity microstructure 123a of top layer tool spotlight effect, and the diffusion layer combination 120 formed of several diffusion layers 121,122 that contain interface microstructure 121a, 121b of internal layer tool diffusion effect.Wherein the material refractive index of this light collecting layer 123 and this diffusion layer 121,122 is best for more past upper strata refractive index more height; Also or 121 and 123 adopt high-index materials; 122 adopt low-index material, and can be the resin material of ultraviolet light polymerization (UV Curing) or heat curing (Thermal Setting).And each interface microstructure 121a, 121b and collection optical activity microstructure 123a roller capable of using (Roller) or dull and stereotyped as mould; On this transparent base 11 or this diffusion layer 121,122, be coated with the last layer resin material again; And carry out imprinting process (Embossing), at last to accomplish after ultraviolet light polymerization or the heat curing.Wherein, according in the present embodiment with type at random as the interface microstructure, the control of its diffusion layer coating thickness is good between 3 μ m to 25 μ m; And, also can select to add an amount of particle by each diffusion layer 121,122 in this diffusion layer combination 120, to change material or optical characteristics.
Because the light collecting layer 123 on these multi-layer coated 12 top layers need have high light collecting light ability, so its material is high-index material, generally between 1.4 to 1.7, and with greater than being good more than 1.5.This diffusion layer combination 120 then is a low-index material, generally between 1.3 to 1.6, and with less than being good below 1.5.Wherein, if this diffusion layer combination 120 comprises three layers of coating, the light collecting layer 123 that the resin material of ground floor and the 3rd layer of use low-refraction then, the second layer then are similar to top layer should use the resin material of high index of refraction.
In addition; The present invention causes assembling quality bad in order to improve general optical film material because of the high electrostatic problem of the too high easy generation of surface resistance; This embodiment also can apply one in the below of this transparent base 11 can antistatic and wear-resistant protection coating layer 13, uses and more improves the quality requirements that this optical film material product is used.In this way, promptly accomplish the assembling of this composite optical film structure with multiple coatings 1.
When the present invention in when utilization; The light 101,102,103 and 104 of parallel incident light; Diffusion layer 121 through tool type interface at random microstructure 121a; To produce the refract light of tool scattering properties because of the refringence of this diffusion layer combination 120, its light 201,202,203 and 204 is advanced being varied to dispersion shape by parallel incident shape originally.Mist degree (Haze) effect that is enough to obvious display light diffusion in view of the above can be reached with the microstructure design of interface under the combination of materials design that is fit to.
In the present invention; Diffusion layer with a tool single face microstructure design; The roughness value of its type structure at random is greater than 0.5 μ m; And the refractive index difference of this light collecting layer and this diffusion layer is more than 0.05, and the haze value that can obtain this diffusion layer is between 5% to 60%, and full penetrance is approximately less than below 92%.Therefore under optimized material design and interface microstructure design, except the mist degree that can obtain certain light diffusion function, also can obtain luminance gain performance with 97% to 100% of identical pure light collecting layer blooming.
At last, when the light 201,202,203 and 204 of scattering gets into the light collecting layer 123 on top layer, can be by special collection optical activity microstructure 123a design with the effective centralization of its light.Therefore, utilize the made optical film material of multi-layer coated the technology design of design, the interface microstructure of permeable material technology and the collection optical activity microstructure design that combines top layer again, can produce high brightness and high-quality composite optical film structure 1.
See also Fig. 5～shown in Figure 9, be respectively type interface microstructure schematic perspective view at random of the present invention, prism-type interface microstructure schematic perspective view of the present invention, pyramid type interface microstructure schematic perspective view of the present invention, lens-type interface microstructure schematic perspective view of the present invention and pyramid interface microstructure schematic perspective view of the present invention.As shown in the figure: the interface microstructure among above-mentioned each embodiment; Be to utilize the mechanicalness surface working roughening of physical method or the surface corrosion roughening of chemical method etc.; And with roller or dull and stereotyped surface as processing mold; Making becomes the body structure surface at random with fine roughening, again in order to carry out the coating imprinting process of diffusion layer, use the diffusion layer of this tool type 4a interface at random microstructure.In addition, interface microstructure of the present invention does not have particular restriction, except above-mentioned type at random, also can be the interface microstructure design of prism-type 4b, pyramid type 4c, lens-type 4d and pyramid 4e etc.
In sum, composite optical film structure with multiple coatings of the present invention can effectively improve the various shortcoming of prior art; The design that utilizes multi-layer coated technology that the diffusion and the spotlight effect of light source are done combined type; Mat is integrated in single blooming piece can effectively reduce material cost, and the diffusion layer of tool interface microstructure as the light flooding mechanism under, not only can promote the briliancy performance effectively; Also can reduce simultaneously because of the quality due to doping dispersion of nano-particles and the film material warpage etc. become because of and because of particle be coated with due to the problem of underlying blooming piece scratch flaw; By this in the assembling of simplifying backlight module with when improving its packaging efficiency, also promote the membrane material amount and the optical characteristics of this composite optical film, so can be more progressive, more practical, more meet user institute must; Really meet the important document of application for a patent for invention, proposed patented claim in accordance with the law.
Only the above is merely preferred embodiment of the present invention, when not limiting the scope that the present invention implements with this; So all simple equivalent of being done according to claim of the present invention and description of the invention content change and modify, all should still belong in the scope that patent of the present invention contains.
Claims (17)
1. composite optical film structure with multiple coatings is characterized in that: to have diffusion layer in order to the type interface microstructure at random of incident ray being done the scattering processing, comprise transparent base, multi-layer coated and protection coating layer as the light flooding mechanism, wherein:
This transparent base has two opposite faces, and its thickness is between 30 μ m to 300 μ m;
This multi-layer coated internal layer has the diffusion layer combination; This diffusion layer combination is positioned on these transparent base two opposite faces one side wherein; And this diffusion layer combination is made up of at least one diffusion layer that contains type interface microstructure at random; The coating thickness of those diffusion layers is between 1 μ m to 50 μ m, and the roughness value of its type interface microstructure at random is more than the 0.5 μ m;
This multi-layer coated top layer has light collecting layer, and this light collecting layer is positioned in this diffusion layer combination, and this diffusion layer combination is between this light collecting layer and this transparent base, and wherein this light collecting layer is in order to make the light of scattering the collection optical activity microstructure of centralization processing;
This protects coating layer, is positioned at another opposite face of this transparent base, in order to provide integrally-built antistatic and resistance to wear;
Wherein, the refractive index of this diffusion layer combination is between 1.3 to 1.6, and the refractive index of this light collecting layer is between 1.4 to 1.7.
2. composite optical film structure with multiple coatings as claimed in claim 1 is characterized in that: said transparent base is the glass or the plastics of high optics penetrance.
3. composite optical film structure with multiple coatings as claimed in claim 1 is characterized in that: the coating thickness of said diffusion layer is between 3 μ m to 25 μ m.
4. composite optical film structure with multiple coatings as claimed in claim 1 is characterized in that: the roughness value of the type interface microstructure at random of said diffusion layer is greater than 0.5 μ m.
5. composite optical film structure with multiple coatings as claimed in claim 1 is characterized in that: the roughness value of the type interface microstructure at random of said diffusion layer is greater than 1 μ m.
6. composite optical film structure with multiple coatings as claimed in claim 1 is characterized in that: said light collecting layer is the collection optical activity microstructure of prism-type, pyramid type, lens-type or pyramid.
7. composite optical film structure with multiple coatings as claimed in claim 1 is characterized in that: the refractive index of said light collecting layer is greater than 1.5 and less than 1.7.
8. composite optical film structure with multiple coatings as claimed in claim 1 is characterized in that: the refractive index of each diffusion layer of said diffusion layer combination is greater than 1.3 and less than 1.5.
9. composite optical film structure with multiple coatings as claimed in claim 1 is characterized in that: the combination of said diffusion layer comprises three layers of coating, and ground floor and the 3rd layer be the resin material of low-refraction, and the second layer then is the resin material of high index of refraction.
10. composite optical film structure with multiple coatings as claimed in claim 1 is characterized in that: the refractive index difference of said light collecting layer and this diffusion layer is more than 0.05, and the haze value of this diffusion layer is between 5% to 60%.
11. composite optical film structure with multiple coatings as claimed in claim 1 is characterized in that: each diffusion layer in the said diffusion layer combination further adds particulate material, and this particulate material is inorganic nature or organic property material.
12. a composite optical film structure with multiple coatings is characterized in that: to have diffusion layer in order to the type interface microstructure at random of incident ray being done the scattering processing, comprise transparent base, multi-layer coated and protection coating layer as the light flooding mechanism, wherein:
This transparent base has two opposite faces, and its thickness is between 30 μ m to 300 μ m;
This is multi-layer coated to have the diffusion layer combination; This diffusion layer combination is positioned on these transparent base two opposite faces one side wherein; And this diffusion layer combination is made up of at least one diffusion layer that contains type interface microstructure at random; The coating thickness of those diffusion layers is between 1 μ m to 50 μ m, and the roughness value of its type interface microstructure at random is more than the 0.5 μ m;
This is multi-layer coated to have light collecting layer, and this light collecting layer is positioned on another opposite face of this transparent base, and wherein this light collecting layer is in order to make the light of scattering the collection optical activity microstructure that centralization is handled;
This protects coating layer, is positioned in the combination of this diffusion layer, in order to provide integrally-built antistatic and resistance to wear; And
Wherein, the refractive index of this diffusion layer combination is between 1.3 to 1.6, and the refractive index of this light collecting layer is between 1.4 to 1.7.
13. composite optical film structure with multiple coatings as claimed in claim 12 is characterized in that: the refractive index difference of said light collecting layer and this diffusion layer is more than 0.05, and the haze value of this diffusion layer is between 5% to 60%, and full penetrance is less than 92%.
14. composite optical film structure with multiple coatings as claimed in claim 12 is characterized in that: each diffusion layer in the said diffusion layer combination further adds particulate material, and this particulate material is inorganic nature or organic property material.
15. a composite optical film structure with multiple coatings is characterized in that: to have diffusion layer in order to the type interface microstructure at random of incident ray being done the scattering processing, comprise transparent base, multi-layer coated and protection coating layer as the light flooding mechanism, wherein:
This transparent base has two opposite faces, and its thickness is between 30 μ m to 300 μ m;
This is multi-layer coated to have the combination of two diffusion layers; Be positioned on two opposite faces of this transparent base; And this diffusion layer combination is made up of at least one diffusion layer that contains type interface microstructure at random; The coating thickness of those diffusion layers is between 1 μ m to 50 μ m, and the roughness value of its type interface microstructure at random is more than the 0.5 μ m;
This is multi-layer coated to have light collecting layer, is positioned on one of them of this two diffusion layers combination, and wherein this light collecting layer is in order to make the light of scattering the collection optical activity microstructure that centralization is handled;
This protects coating layer, is positioned at wherein on another of this two diffusion layer combination, in order to provide integrally-built antistatic and resistance to wear; And
Wherein, the refractive index of this diffusion layer combination is between 1.3 to 1.6, and the refractive index of this light collecting layer is between 1.4 to 1.7.
16. composite optical film structure with multiple coatings as claimed in claim 15 is characterized in that: the refractive index difference of said light collecting layer and this diffusion layer is more than 0.05, and the haze value of this diffusion layer is between 5% to 60%.
17. composite optical film structure with multiple coatings as claimed in claim 15 is characterized in that: each diffusion layer in the said diffusion layer combination further adds particulate material, and this particulate material is inorganic nature or organic property material.
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| CN200810305478XA CN101738649B (en) | 2008-11-11 | 2008-11-11 | Composite optical film structure with multiple coatings |
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| CN102508325A (en) * | 2011-10-31 | 2012-06-20 | 常州山由帝杉防护材料制造有限公司 | Diffusion film and preparation method thereof |
| GB201203183D0 (en) * | 2012-02-24 | 2012-04-11 | Qinetiq Ltd | Optical multilayer |
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| CN108254818B (en) * | 2016-12-28 | 2021-05-25 | 惠和株式会社 | Optical sheet for liquid crystal display device and backlight unit for liquid crystal display device |
| CN107831560A (en) * | 2017-11-30 | 2018-03-23 | 宁波激智科技股份有限公司 | A kind of Pasting type optical diffusion and preparation method thereof |
| CN109085670A (en) * | 2018-09-11 | 2018-12-25 | 惠州市创亿达新材料有限公司 | High light diffusion feature board of high fog and preparation method thereof |
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| CN109188847A (en) * | 2018-11-05 | 2019-01-11 | 成都菲斯特科技有限公司 | Imaging arrangement, projection screen and optical projection system |
| CN109143765A (en) * | 2018-11-05 | 2019-01-04 | 成都菲斯特科技有限公司 | Imaging arrangement, projection screen and optical projection system |
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