CN105319626B - Optical thin film and display device - Google Patents
Optical thin film and display device Download PDFInfo
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- CN105319626B CN105319626B CN201510755800.9A CN201510755800A CN105319626B CN 105319626 B CN105319626 B CN 105319626B CN 201510755800 A CN201510755800 A CN 201510755800A CN 105319626 B CN105319626 B CN 105319626B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/04—Prisms
- G02B5/045—Prism arrays
Abstract
The invention provides optical thin film and display device.The optical thin film, including：Lens jacket, there is the bottom surface of planar structure, and be made up of microlens array, microlens array includes multiple lens arrangements arranged in the first direction, and first direction is parallel to bottom surface；Layers of prisms, layers of prisms are arranged on lens jacket away from bottom surface, and layers of prisms is made up of microprism array, and microprism array includes multiple prism structures arranged in the first direction, and the drift angle of prism structure is chamfering；The focus of lens arrangement and the vertical range of bottom surface are f, and the extended surface intersection of the side of prism structure and the vertical range of bottom surface are H, andThe top of prism structure can be fallen among dark space using above-mentioned optical thin film, light is forced to be penetrated via the skew back face of prism structure, and then cause optical thin film rising angle convergence effect do not decline because its top is in curved surface, realize optical thin film while with higher abrasion resistance also with high light gain.
Description
Technical field
The present invention relates to thin film technique field, in particular to a kind of optical thin film and display device.
Background technology
The optical thin film as brightness enhancement film being arranged in flat-panel screens is generally used for improving the positive light intensity of display
Degree.Above-mentioned optical thin film is most important to be that surface micro-structure is easily destroyed by external force using difficult point, so as to cause the flaw of picture.
In order to improve the picture display effect of optical thin film, the abrasion-resistant scratch resistance characteristic for improving Optical Coatings Surface is generally required, at present
Generally use following processing method is realized：The first processing method is to be broken by the way that prism vertex angle is passivated with reducing micro-structural
Bad possibility lifts wearability, and second of processing method be wear-resisting to improve product with the material for the shape that can voluntarily resile
Property.
For the first processing method, although drift angle radius of curvature is bigger, or straight angle region is wider, and wearability is better, from
And by changing external form, the destroyed possibility in prism tip is reduced, but because vertex has radius of curvature, cause arc
Face, this cambered surface can not be parallel with prism structure inclined-plane, so as to cause emergent light angle at fillet to differ with inclined-plane emergent light angle
Cause, and then the degree of convergence of overall emergent light angle is deteriorated, reduce the positive visual angle optical gain effect of optical thin film.
And for second of processing method, though prism vertex angle structural intergrity can be kept, it is existing to be applied to brightness enhancement film system
Its refractive index of the elastomeric material of journey is far below the refractive index of not resilient material, therefore, has the wear-resisting optically thin of wear-resisting functions
Its optics benefit of film substantially reduces compared to the product for not having wear-resisting functions.
In order to overcome above mentioned problem, the optical thin film that a kind of optical gain is higher and wearability is good is needed badly in the prior art.
The content of the invention
It is a primary object of the present invention to provide a kind of optical thin film and display device, to solve optics of the prior art
Film can not can also be with high light gain while with higher abrasion resistance the problem of.
To achieve these goals, according to an aspect of the invention, there is provided a kind of optical thin film, including：Lens jacket,
Bottom surface with planar structure, and be made up of microlens array, microlens array includes multiple lens arranged in the first direction
Structure, first direction is parallel to bottom surface；Layers of prisms, layers of prisms are arranged on lens jacket away from bottom surface, and layers of prisms is by microprism battle array
Row composition, microprism array includes multiple prism structures arranged in the first direction, and the drift angle of prism structure is chamfering；Lens
The focus of structure and the vertical range of bottom surface are f, and the extended surface intersection of the side of prism structure and the vertical range of bottom surface are H,
And
Further, when at least one focus is in prism structure, form the light of focus and prism structure intersects
Peak is point C1, point C1For side and the tie point of chamfering, now focus and the vertical range of the bottom surface are h1；Work as focus
When outside prism structure, it is point C to form the peak that the light of focus and prism structure intersect2, and point C2For side and chamfering
Tie point, now the vertical range of focus and the bottom surface is h2；Wherein, h1≤f≤h2。
Further, the refractive index of lens jacket is n1, the refractive index of layers of prisms is n2, n1And n2MeetIts
In, r is the radius of curvature of lens arrangement.
Further, each prism structure corresponds to the setting of even number lens arrangement.
Further, in a first direction, the length of lens arrangement and the length of prism structure are identical, and lens arrangement with
Prism structure shifts to install.
Further, the drift angle of prism structure corresponds to the joining place setting of adjacent lens structure.
Further, lens arrangement is planoconvex spotlight, and the convex portion of planoconvex spotlight is towards layers of prisms, and n1More than n2；Lens knot
Structure is plano-concave lens, and the recess of plano-concave lens is towards layers of prisms, and n1Less than n2。
Further, formed lens jacket and layers of prisms material be independently selected from polyethylene terephthalate,
Appointing in the group that polypropylene, polyacrylate, makrolon, polymethyl methacrylate and polyethylene vinyl acetoacetic ester form
It is a kind of.
Further, optical thin film also includes transparent substrate layer, and transparent substrate layer is arranged on the remote layers of prisms of lens jacket
Surface on.
According to another aspect of the present invention, there is provided display device, including optical thin film, optical thin film are above-mentioned optics
Film.
Apply the technical scheme of the present invention, the invention provides a kind of optical thin film including lens jacket and layers of prisms, rib
Mirror layer is covered on lens jacket, and the drift angle of the vertical cross-section of prism structure is fillet, because the lens jacket is by microlens array
Composition, so as to which the dark space of dull thread entrance is formed on lens jacket by focus and has the clear zone of light, and it is saturating by adjusting
The refractive index of mirror layer and layers of prisms, the focus of lens arrangement is set to be located at more than 1/2 height of prism structure (i.e.), so as to
Among the top of prism structure being fallen within into dark space, i.e., light cannot be introduced into the apex zone, force light via prism
The skew back face of structure is penetrated, so cause optical thin film rising angle convergence effect not because its top is in curved surface and under
Drop, realize optical thin film while with higher abrasion resistance also with high light gain.
In addition to objects, features and advantages described above, the present invention also has other objects, features and advantages.
Below with reference to figure, the present invention is further detailed explanation.
Brief description of the drawings
The Figure of description for forming the part of the present invention is used for providing a further understanding of the present invention, and of the invention shows
Meaning property embodiment and its illustrate be used for explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 shows that a kind of focal length that embodiment of the present invention is provided is equal to h1And lens arrangement is the light of planoconvex spotlight
Learn the diagrammatic cross-section of the partial structurtes of film；
Fig. 2 shows that another focal length that embodiment of the present invention is provided is equal to h1And lens arrangement is planoconvex spotlight
The diagrammatic cross-section of the partial structurtes of optical thin film；
Fig. 3 shows that a kind of focal length that embodiment of the present invention is provided is equal to h2And lens arrangement is the light of planoconvex spotlight
Learn the diagrammatic cross-section of the partial structurtes of film；
Fig. 4 shows that another focal length that embodiment of the present invention is provided is equal to h2And lens arrangement is planoconvex spotlight
The diagrammatic cross-section of the partial structurtes of optical thin film；
Fig. 5 shows that the focal length that embodiment of the present invention is provided is equal to h1And lens arrangement is the optically thin of plano-concave lens
The diagrammatic cross-section of the partial structurtes of film；
Fig. 6 shows that the focal length that embodiment of the present invention is provided is equal to h2And lens arrangement is the optically thin of plano-concave lens
The diagrammatic cross-section of the partial structurtes of film；
Fig. 7 shows the section for the optical thin film that a kind of lens arrangement that embodiment of the present invention is provided is planoconvex spotlight
Structural representation；
Fig. 8 shows the section for the optical thin film that a kind of lens arrangement that embodiment of the present invention is provided is plano-concave lens
Structural representation；
Fig. 9 shows another lens arrangement the cuing open for the optical thin film of planoconvex spotlight that embodiment of the present invention is provided
Face structural representation；And
Figure 10 shows that another lens arrangement that embodiment of the present invention is provided is the optical thin film of planoconvex spotlight
Cross-sectional view.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
In order that those skilled in the art more fully understand the present invention program, below in conjunction with the embodiment of the present invention
Accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained under the premise of creative work is not made, it should all belong to the model that the present invention protects
Enclose.
It should be noted that term " first " in description and claims of this specification and above-mentioned accompanying drawing, "
Two " etc. be for distinguishing similar object, without for describing specific order or precedence.It should be appreciated that so use
Data can exchange in the appropriate case, so as to embodiments of the invention described herein.In addition, term " comprising " and " tool
Have " and their any deformation, it is intended that cover it is non-exclusive include, for example, containing series of steps or unit
Process, method, system, product or equipment are not necessarily limited to those steps clearly listed or unit, but may include without clear
It is listing to Chu or for the intrinsic other steps of these processes, method, product or equipment or unit.
As described in background technology, the optics that a kind of optical gain is higher and wearability is good is needed badly in the prior art
Film.The present inventor is studied regarding to the issue above, it is proposed that a kind of optical thin film, as shown in Figures 1 to 6, the light
Learning film includes lens jacket and layers of prisms, wherein, lens jacket is made up of microlens array, and the bottom surface with planar structure, micro-
Lens array includes multiple lens arrangements 10 arranged in the first direction, and first direction is parallel to bottom surface, and layers of prisms is away from bottom surface
It is arranged on lens jacket, layers of prisms is made up of microprism array, and microprism array includes multiple prisms arranged in the first direction
Structure 20, and the drift angle of prism structure 20 is chamfering；The focus 30 of lens arrangement 10 and the vertical range of bottom surface are f, prism
The extended surface intersection of the side of structure 20 and the vertical range of bottom surface are H, and
Because lens jacket is made up of column lens array in above-mentioned optical thin film, so as to be formed by focus on lens jacket
The dark space (i.e. shadow region in Fig. 1 to 6) of dull thread entrance and the clear zone for having light, and by adjusting lens jacket and layers of prisms
Refractive index, the focus of lens arrangement is located at more than 1/2 height of prism structure, so as to which the top of prism structure is fallen
Among dark space, i.e., light cannot be introduced into the apex zone, forces light to be penetrated via the skew back face of prism structure, enters
And cause optical thin film rising angle convergence effect do not decline because its top is in curved surface, realize optical thin film with compared with
The high light gain also having while high-wearing feature.
In the above-mentioned optical thin film of the present invention, the focus 30 and the vertical range of bottom surface of lens arrangement 10 can be entered for f
Row further optimizes.When at least one focus 30 is in prism structure 20, the light and prism structure 20 of the focus 30 are formed
Intersecting peak is point C1, point C1For side and the tie point of chamfering, now focus and the vertical range of the bottom surface are h1,
When chamfering is fillet, tie point is side and the point of contact of fillet, and the cross-sectional view of each prism structure 20 is as shown in Figure 1, Figure 2
Shown in Fig. 5；When focus 30 is outside prism structure 20, the light for forming focus 30 is with the peak that prism structure 20 intersects
Point C2, point C2For side and the tie point of chamfering, now focus and the vertical range of the bottom surface are h2, when chamfering is fillet,
Tie point is side and the point of contact of fillet, and the cross-sectional view of each prism structure 20 is as shown in Fig. 3, Fig. 4 and Fig. 6；Wherein,
h1≤f≤h2.Preferably, the focus 30 of lens arrangement 10 and the vertical range f of bottom surface are taken between above-mentioned maximum and minimum value,
Among can ensureing that the top (i.e. fillet part) of prism structure 20 falls within dark space completely, so that light can be via prism
The skew back face of structure 20 is penetrated, and improves the convergence effect of optical thin film rising angle, make optical thin film with compared with
While high-wearing feature, the optical gain of optical thin film is further increased.
In the above-mentioned optical thin film of the present invention, the refractive index of lens jacket is n1, the refractive index of layers of prisms is n2, in order that thoroughly
The focus 30 of mirror structure 10 is located at more than 1/2 height of prism structure 20, so as to by the top of prism structure 20 fall within dark space it
In, it can be optimized by the refractive index to lens jacket and the refractive index of layers of prisms.Preferably, n is made1And n2MeetWherein, r is the radius of curvature of lens arrangement 10.Due to the vertical range f between the focal length of lens jacket and its bottom surface
MeetSo as to by making n1And n2MeetIt is vertical between its bottom surface to be capable of the focal length of lens jacket
Distance f is located at more than 1/2 height of prism structure 20.
In the above-mentioned optical thin film of the present invention, the lens arrangement 10 in lens jacket can be planoconvex spotlight, i.e. planoconvex spotlight
Convex portion towards layers of prisms, now n1More than n2, as shown in Figures 1 to 4；Lens arrangement 10 can also be plano-concave lens, i.e. plano-concave is saturating
The recess of mirror is towards layers of prisms, now n1Less than n2, as illustrated in Figures 5 and 6.Those skilled in the art can be led to according to the actual requirements
Selection different materials are crossed to determine n1In n2Between size, so that it is determined that lens arrangement 10 is planoconvex spotlight or plano-concave lens.
In the above-mentioned optical thin film of the present invention, it is preferable that lens jacket and the material of layers of prisms are independently selected from poly- pair
PET, polypropylene, polyacrylate, makrolon, polymethyl methacrylate and polyethylene vinyl acid second
Any of group of ester composition；Preferably, polyacrylate account for the 1/2 of lens jacket and/or the percentage by weight of layers of prisms with
On.Above-mentioned preferable material is transparent material, so as to make light more effectively pass through lens jacket and layers of prisms, is ensured
The high light gain that optical thin film can have.
In the above-mentioned optical thin film of the present invention, optical thin film also includes transparent substrate layer, and transparent substrate layer is arranged on lens
On the surface of the remote layers of prisms of layer.The material of substrate layer can be selected from polyethylene terephthalate, polypropylene, poly- carbonic acid
Any of group of ester, polymethyl methacrylate and polyethylene vinyl acetoacetic ester composition.Above-mentioned preferable material is
Bright material, so as to make light more effectively pass through substrate layer, the high light that ensure that optical thin film can have increases
Benefit.
Equally, in order that the focus 30 of lens arrangement 10 is located at more than 1/2 height of prism structure 20, so as to by prism knot
Among the top of structure 20 falls within dark space, the structure of optical thin film can also be optimized.In a preferred embodiment,
Each corresponding even number lens arrangement 10 of prism structure 20 is set, and its structure is as shown in FIG. 7 and 8.In another preferable embodiment party
In formula, the length of lens arrangement 10 in a first direction is identical with the length of prism structure 20, and lens arrangement 10 is along first party
Shifted to install to prism structure 20, its structure is as shown in Figure 9.It is further preferable that the drift angle of prism structure 20 is corresponding to adjacent
The joining place of lens arrangement 10 is set, and its structure is as shown in Figure 10.Using the structure of above-mentioned optical thin film, and in optical thin film
The refractive index of lens jacket and layers of prisms, which is adjusted, can effectively be such that the top of prism structure 20 falls among dark space.
According to another aspect of the present invention, there is provided a kind of display device, the display device include above-mentioned optical thin film.By
Among the top of prism structure 20 can be fallen within dark space by above-mentioned optical thin film, side of the light via prism structure 20 is forced
Inclined-plane is penetrated, while so as to higher abrasion resistance also with high light gain, and then make to include above-mentioned optics
The above-mentioned display device of film can have higher surface reliability and light extraction efficiency.
The optical thin film of the application offer is be provided below in conjunction with embodiment and comparative example.
Optical thin film in following embodiments is the structure of corresponding 8 lens of a prism as shown in Figure 2, and each reality
The radius of curvature for differing only in lens face for applying example is different.Those skilled in the art can carry out lens according to embodiment content
Shape (such as concave lens, convex lens, multiaspect lens), the change of lens numbers, the change of radius of curvature, lens and prism
What the change of refractive index or the above were combined changes to obtain different versions, here no longer citing in detail.
Embodiment 1
The optical thin film that the present embodiment provides includes：
Lens jacket, there is the bottom surface of planar structure, be made up of microlens array, microlens array includes multiple along first party
To the lens arrangement of arrangement, lens arrangement is planoconvex spotlight, r=15 μm of lens curvature radius, lens jacket refractive index n1=
1.65, and first direction is parallel to bottom surface；
Layers of prisms, layers of prisms are arranged on lens jacket away from bottom surface, and layers of prisms is made up of microprism array, microprism array
Including multiple prism structures arranged in the first direction, layers of prisms refractive index n2=1.35, the extended surface of the side of prism structure
Intersection and H=28 μm of the vertical range of bottom surface, and the drift angle of prism structure is fillet, fillet radius of curvature is 5 μm (R5)；
Wherein, the material for forming lens jacket is polypropylene, and the material for forming layers of prisms is polyacrylate.
Embodiment 2
The optical thin film that the present embodiment provides includes：
Lens jacket, there is the bottom surface of planar structure, be made up of microlens array, microlens array includes multiple along first party
To the lens arrangement of arrangement, lens arrangement is planoconvex spotlight, r=9 μm of lens curvature radius, lens jacket refractive index n1=
1.65, and first direction is parallel to bottom surface；
Layers of prisms, layers of prisms are arranged on lens jacket away from bottom surface, and layers of prisms is made up of microprism array, microprism array
Including multiple prism structures arranged in the first direction, layers of prisms refractive index n2=1.35, the extended surface of the side of prism structure
Intersection and H=28 μm of the vertical range of bottom surface, and the drift angle of prism structure is fillet, fillet radius of curvature is 5 μm (R5)；
Wherein, form lens jacket and the material of layers of prisms is same as Example 1.
Embodiment 3
The optical thin film that the present embodiment provides includes：
Lens jacket, there is the bottom surface of planar structure, be made up of microlens array, microlens array includes multiple along first party
To the lens arrangement of arrangement, lens arrangement is planoconvex spotlight, r=6 μm of lens curvature radius, lens jacket refractive index n1=
1.65, and first direction is parallel to bottom surface；
Layers of prisms, layers of prisms are arranged on lens jacket away from bottom surface, and layers of prisms is made up of microprism array, microprism array
Including multiple prism structures arranged in the first direction, layers of prisms refractive index n2=1.35, the extended surface of the side of prism structure
Intersection and H=28 μm of the vertical range of bottom surface, and the drift angle of prism structure is fillet, fillet radius of curvature is 5 μm (R5)；
Wherein, form lens jacket and the material of layers of prisms is same as Example 1.
Embodiment 4
The optical thin film that the present embodiment provides includes：
Lens jacket, there is the bottom surface of planar structure, be made up of microlens array, microlens array includes multiple along first party
To the lens arrangement of arrangement, lens arrangement is planoconvex spotlight, r=3.5 μm of lens curvature radius, lens jacket refractive index n1=
1.65, and first direction is parallel to bottom surface；
Layers of prisms, layers of prisms are arranged on lens jacket away from bottom surface, and layers of prisms is made up of microprism array, microprism array
Including multiple prism structures arranged in the first direction, layers of prisms refractive index n2=1.35, the extended surface of the side of prism structure
Intersection and H=28 μm of the vertical range of bottom surface, and the drift angle of prism structure is fillet, fillet radius of curvature is 5 μm (R5)；
Wherein, form lens jacket and the material of layers of prisms is same as Example 1.
Comparative example 1
The optical thin film section that the present embodiment provides is individual layer prism structure, layers of prisms refractive index n2=1.35, prism knot
The extended surface intersection of the side of structure and H=28 μm of the vertical range of bottom surface, and the drift angle of prism structure is 90 degree of wedge angles (R0)；Shape
Material into layers of prisms is same as Example 1.
Comparative example 2
The optical thin film section that the present embodiment provides is individual layer prism structure, layers of prisms refractive index n2=1.35, prism knot
The extended surface intersection of the side of structure and H=28 μm of the vertical range of bottom surface, and the drift angle of prism structure is fillet, fillet curvature is partly
Footpath is 3 μm (R3)；The material for forming layers of prisms is same as Example 1.
Comparative example 3
The optical thin film section that the present embodiment provides is individual layer prism structure, layers of prisms refractive index n2=1.35, prism knot
The extended surface intersection of the side of structure and H=28 μm of the vertical range of bottom surface, and the drift angle of prism structure is fillet, fillet curvature is partly
Footpath is 5 μm (R5)；The material for forming layers of prisms is same as Example 1.
The optical gain performance of the optical thin film provided above-described embodiment 1 to 4 and comparative example 1 to 3 is tested, and is tested
As a result it is as follows：
Above-described embodiment 1 to 4 and the major parameter of comparative example 1 to 3 arrange such as following table：
| Prism vertex angle | Refractive Index of Glass Prism (n2) | Structure height (H) | The index of refraction in lens (n1) | Lens curvature radius (r) | |
| Comparative example 1 | R0 | 1.35 | 28μm | - | - |
| Comparative example 2 | R3 | 1.35 | 28μm | - | - |
| Comparative example 3 | R5 | 1.35 | 28μm | - | - |
| Embodiment 1 | R5 | 1.35 | 28μm | 1.65 | 15μm |
| Embodiment 2 | R5 | 1.35 | 28μm | 1.65 | 9μm |
| Embodiment 3 | R5 | 1.35 | 28μm | 1.65 | 6μm |
| Embodiment 4 | R5 | 1.35 | 28μm | 1.65 | 3.5μm |
The brightness enhancement film of above-mentioned each embodiment and comparative example is assembled into backlight module and (ensures other knots in backlight module
Structure all same), it is as shown in the table using the positive visual angle optical gain of each backlight module of BM-7 YCs meter measurement, test result：
| Optical gain | |
| Comparative example 1 | 1.50 |
| Comparative example 2 | 1.47 |
| Comparative example 3 | 1.43 |
| Embodiment 1 | 1.44 |
| Embodiment 2 | 1.50 |
| Embodiment 3 | 1.49 |
| Embodiment 4 | 1.45 |
Compared to comparative example 1, prism vertex angle is substituted into wedge angle by fillet in comparative example 2 and 3, when fillet radius of curvature is cured
Greatly, brightness enhancement film antiwear characteristic is better, but optical gain is poorer.By embodiment 1 to 4 in contrast to comparative example 1 to 3, embodiment 1 to 4
In add a lens jacket, when lens radius of curvature (r) is by gradually small greatly, focal length also moves closer to lens end from away from lens end.
The focal length of embodiment 1 is more than foregoing h2, optical gain effect is poor, but still better than comparative example 3.Before the focal length of embodiment 2 is less than
State h2, and fall within outside prism structure, optical gain effect is preferable.The focal length of embodiment 3 is more than foregoing h1, and fall within prism structure
Interior, optical gain effect is preferable.The focal length of embodiment 4 is less than foregoing h1, optical gain effect is poor, but still better than comparative example 3.
And in embodiment 2 and 3, when focal length is between h1To h2Between when, optical gain be close to pinnacle angle prism comparative example 1.
As can be seen from the above description, the above embodiments of the present invention realize following technique effect：
The invention provides a kind of optical thin film including lens jacket and layers of prisms, layers of prisms is covered on lens jacket, and
The drift angle of the vertical cross-section of prism structure is fillet, because the lens jacket is made up of column lens array, so as to be existed by focus
The dark space that dull thread enters and the clear zone for having light are formed on lens jacket, and by adjusting the refraction of lens jacket and layers of prisms
Rate, the focus of lens arrangement is set to be located at more than 1/2 height of prism structure, so as to which the top of prism structure is fallen within into dark space
Among, i.e., light cannot be introduced into the apex zone, force light to be penetrated via the skew back face of prism structure, and then cause
The rising angle convergence effect of optical thin film does not decline because its top is in curved surface, realizes optical thin film with compared with high abrasion
The high light gain also having while property.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
1. a kind of optical thin film, including：
Lens jacket, there is the bottom surface of planar structure, and be made up of microlens array, the microlens array includes multiple along first
The lens arrangement (10) of direction arrangement, the first direction is parallel to the bottom surface；
Layers of prisms, the layers of prisms are arranged on the lens jacket away from the bottom surface, and the layers of prisms is by microprism array group
Into the microprism array includes multiple prism structures (20) arranged along the first direction, and the prism structure (20)
Drift angle be chamfering；
Characterized in that, the focus (30) of the lens arrangement (10) and the vertical range of the bottom surface are f, the prism structure
(20) the extended surface intersection of side and the vertical range of the bottom surface are H, and
2. optical thin film according to claim 1, it is characterised in that
When at least one focus (30) is interior in the prism structure (20), formed the light of the focus (30) with it is described
The intersecting peak of prism structure (20) is point C1, and the point C1It is now described for the side and the tie point of the chamfering
Focus and the vertical range of the bottom surface are h1；
When the focus (30) is outer in the prism structure (20), the light of the focus (30) and the prism knot are formed
The intersecting peak of structure (20) is point C2, and the point C2For the tie point of the side and the chamfering, now the focus with
The vertical range of the bottom surface is h2；
Wherein, h1≤f≤h2。
3. optical thin film according to claim 1 or 2, it is characterised in that the refractive index of the lens jacket is n1, the rib
The refractive index of mirror layer is n2, the n1With the n2MeetWherein, r is the curvature half of the lens arrangement (10)
Footpath.
4. the optical thin film stated according to claim 3, it is characterised in that described in each corresponding even number of the prism structure (20) thoroughly
Mirror structure (10) is set.
5. the optical thin film stated according to claim 3, it is characterised in that in said first direction, the lens arrangement (10)
Length it is identical with the length of the prism structure (20), and the dislocation of the lens arrangement (10) and the prism structure (20) is set
Put.
6. the optical thin film stated according to claim 5, it is characterised in that the drift angle of the prism structure (20) corresponds to adjacent institute
The joining place for stating lens arrangement (10) is set.
7. optical thin film according to claim 3, it is characterised in that
The lens arrangement (10) is planoconvex spotlight, and the convex portion of the planoconvex spotlight is towards the layers of prisms, and the n1More than institute
State n2；Or
The lens arrangement (10) is plano-concave lens, and the recess of the plano-concave lens is towards the layers of prisms, and the n1Less than institute
State n2。
8. optical thin film according to claim 1 or 2, it is characterised in that form the lens jacket and the layers of prisms
Material is independently selected from polyethylene terephthalate, polypropylene, polyacrylate, makrolon, polymethyl
Any of group of sour methyl esters and polyethylene vinyl acetoacetic ester composition.
9. optical thin film according to claim 1 or 2, it is characterised in that the optical thin film also includes transparent substrate layer,
The transparent substrate layer is arranged on the surface of the remote layers of prisms of the lens jacket.
10. a kind of display device, including optical thin film, it is characterised in that the optical thin film is any in claim 1 to 9
Optical thin film described in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510755800.9A CN105319626B (en) | 2015-11-09 | 2015-11-09 | Optical thin film and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510755800.9A CN105319626B (en) | 2015-11-09 | 2015-11-09 | Optical thin film and display device |
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| CN101305309B (en) * | 2005-09-30 | 2010-11-10 | Limo专利管理有限及两合公司 | Apparatus for homogenizing light |
| CN101393278A (en) * | 2007-09-17 | 2009-03-25 | 鸿富锦精密工业（深圳）有限公司 | Back light module unit and prismatic lens thereof |
| GB2454928B (en) * | 2007-11-23 | 2009-11-18 | Iti Scotland Ltd | Light guides |
| CN102207565B (en) * | 2011-07-01 | 2014-07-09 | 凯鑫森(上海)功能性薄膜产业有限公司 | Multifunctional optical sheet, and backlight module and liquid crystal display device with optical sheet |
| CN103245988A (en) * | 2012-02-03 | 2013-08-14 | 苏州拓显光电材料有限公司 | Diffuser plate |
| CN104865624A (en) * | 2014-02-21 | 2015-08-26 | 常州松润电子科技有限公司 | Curved surface arc microstructural prism film |
| CN203811948U (en) * | 2014-04-30 | 2014-09-03 | 青岛卓英社科技有限公司 | Brightening composite film |
| CN204116634U (en) * | 2014-09-25 | 2015-01-21 | 深圳市聚飞光学材料有限公司 | A kind of blooming with microstructure and backlight module |
| CN104950361B (en) * | 2015-07-06 | 2018-08-28 | 张家港康得新光电材料有限公司 | Optical thin film and back light unit |
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