CN106886067A - A kind of composite brightening film and preparation method thereof - Google Patents
A kind of composite brightening film and preparation method thereof Download PDFInfo
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- CN106886067A CN106886067A CN201510938383.1A CN201510938383A CN106886067A CN 106886067 A CN106886067 A CN 106886067A CN 201510938383 A CN201510938383 A CN 201510938383A CN 106886067 A CN106886067 A CN 106886067A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
- G02B5/0231—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures the surface having microprismatic or micropyramidal shape
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
- G02B5/0226—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures having particles on the surface
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0268—Diffusing elements; Afocal elements characterized by the fabrication or manufacturing method
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Abstract
The present invention relates to technical field of liquid crystal display, more particularly to a kind of composite brightening film and preparation method thereof." cut off " phenomenon, the problem of easy scratch, the present invention can be produced to provide a kind of composite brightening film and preparation method thereof to solve existing brightness enhancement film.The composite brightening film includes transparent base layer and prism structural layer；The transparent base layer includes relative the first optical surface and the second optical surface, and the prism structural layer is arranged on the first optical surface, and the prism structural layer includes first prism unit and the second prism unit of several parallel arrangements；There is diffusion particle in the prism structural layer.The composite brightening film that the present invention is provided can mitigate " cut off " phenomenon, while also having anti-scratch effect.Meanwhile, there is the composite brightening film that the present invention is provided diffusion can reduce the usage quantity of optical function diaphragm in backlight module, so as to reduce the thickness of backlight module and simplify the assembly program of backlight module.
Description
Technical field
The present invention relates to technical field of liquid crystal display, more particularly to a kind of composite brightening film and preparation method thereof.
Background technology
Brightness enhancement film (BEF, Brightness Enhancement Film) is to be applied to TFT, LCD backlight mould
In block, to improve whole back light system luminous efficiency as the film or thin slice of objective, it is widely used in liquid
In crystalline substance display.At present, brightness enhancement film (BEF) is widely used in illuminating module, is sent for converging light source
Light, brightness enhancement film (BEF) is especially commonly used in the display device such as monitor increases display brightness and section
The about energy of display battery apparatus.
The principle of brightness enhancement film is to be adjusted to sight the light outside directive observer visual angle by refraction and reflection
Within the person of examining visual angle, so that positive brightness is improved, which improves the utilization rate that light source sends luminous energy.
The cross section of traditional prism structure unit is isosceles triangle, and observer stretches perpendicular to prism
In the plane in direction, brightness when being moved to larger angle (about 35 degree) is faced from zero degree slowly to be reduced.
In 35-40 degree, brightness is reduced rapidly.This phenomenon is referred to as serious " cut-off " phenomenon.
Prism structure has sharp corner angle in general brightness enhancement film, during transmitting and installing and using very
Easily cause scratch and burst apart, so as to have impact on optical quality.Prior art discloses a kind of anti-scratch blast
Film, its structure is to increase the prism columns that some tops are fillet in traditional brightness enhancement film prism array, these
Prism heights are higher than the different structure prism columns on its periphery, so as to play anti-scratch action effect.
General recommendations replaces two or three optically functional films using a kind of multifunctional composite film, reduces light
The use of diaphragm is learned, while having reached the action effect of the effect for adding lustre to and up/down diffusion.Prior art is public
Opened it is a kind of the brightness enhancement film of diffusion particle is added in prism structure, while reaching diffusion light source and optically focused
Effect, reduces thickness.
The content of the invention
" cut-off " phenomenon, the problem of easy scratch, the present invention can be produced to provide to solve existing brightness enhancement film
A kind of composite brightening film and preparation method thereof.The composite brightening film that the present invention is provided can mitigate " cut-off "
Phenomenon, while also having anti-scratch effect.Meanwhile, the composite brightening film that the present invention is provided has diffusion,
The function of diffusion and optically focused is gathered simultaneously, the use number of optical function diaphragm in backlight module can have been reduced
Amount, so as to reduce the thickness of backlight module and simplify the assembly program of backlight module.
In order to solve the above problems, the present invention uses following technical proposals：
The present invention provides a kind of composite brightening film, including transparent base layer and prism structural layer；The transparent base
Layer includes relative the first optical surface and the second optical surface, and the prism structural layer is arranged on the first optical surface
On, the prism structural layer includes first prism unit and the second prism unit of several parallel arrangements；
There is diffusion particle in the prism structural layer.
Further, there is diffusion particle in first prism unit and the second prism unit.
Further, in described composite brightening film, the cross section of first prism unit is triangle
Shape, the triangle is not isosceles triangle；The cross section of second prism unit is isosceles triangle,
The drift angle of the triangle is fillet；The second prism unit height H2 is high more than the first prism unit
Degree H1.
Further, in described composite brightening film, first prism unit is stretched by vertical prism
The cross section that the plane in direction is intercepted is not isosceles triangle, and the angle of the drift angle of the triangle is 50
° -130 °, the angle at two base angles of the triangle is respectively 20 ° -75 °.
In first prism unit, the angle at two base angles of the triangle is unequal.
Further, the cross section of the first prism structure unit is triangle, and the triangle is not
Isosceles triangle (or non-isosceles triangle), the base angle angle in the left side of the triangle is less than right side
Base angle angle.That is, all the base angle angle in the left side of the first prism structure unit is less than the base angle angle on right side
Degree.Or, all the base angle angle on the right side of the first prism structure unit is less than the base angle angle in left side.
Further, in described composite brightening film, second prism unit is stretched by vertical prism
The cross section that the plane in direction is intercepted is isosceles triangle, and the drift angle of the triangle is fillet, described
Fillet is the smooth curve of convex；The radius of the fillet is R, and the R is 1 μm -5 μm, institute
The angle for stating two sides of drift angle is 50 ° -130 °, and the angle at two base angles of the isosceles triangle is
25°-65°.In second prism unit, the angle at two base angles of the isosceles triangle is equal.
Further, in the prism structural layer of described composite brightening film, the second prism unit is distributed in
Between first prism unit, one the second prism unit is set every N number of first prism unit, N is just
Integer, N ∈ [1-20].
Further, in described composite brightening film, the raw material of the transparent base is macromolecule resin.
The macromolecule resin is selected from polyester.The polyester is polyethylene terephthalate (PET).
The polyester raw material that the transparent base layer is used is polyethylene terephthalate (PET), described poly-
Ester raw material weight average molecular weight range is 16000-20000, and the intrinsic viscosity value of the polyester raw material is
0.55dl/g。
Further, the thickness of the transparent base PET is between 50 μm -350 μm.
Further, the thickness of the transparent base PET is between 200 μm -250 μm.
Further, in described composite brightening film, the material of the prism structural layer includes ultraviolet light
Solidified resin glue and diffusion particle；The diffusion particle is dispersed in UV-cured resin glue；Institute
State UV-cured resin glue and be selected from acrylate glue, epoxy resin glue or polyurethane tree
One kind in fat glue；The diffusion particle is organic diffusion particle PMMA；The diffusion particle is ball
Shape, particle diameter is 1 μm -20 μm, and the diffusion particle accounts for the 10%-20% of prism structure layer material gross weight.
Further, the diffusion particle is the spherical of rule.
Further, in described composite brightening film, first prism unit is highly H1, H1
It is 10 μm -50 μm；The height of second prism unit is H2, and H2 is 15 μm -60 μm.
Further, in described composite brightening film, first prism unit is stretched by vertical prism
The cross section that the plane in direction is intercepted is not isosceles triangle, and the angle of the drift angle of the triangle is 90
°, the angle at two base angles of the triangle is respectively 40 ° and 50 °；The second prism unit quilt
The cross section that the plane of vertical prism direction of extension is intercepted is isosceles triangle, the drift angle of the triangle
It is fillet, the fillet is the smooth curve of convex；The radius of the fillet is R, and the R is 2
μm -3 μm, the angle on two sides of the drift angle is 90 °, two base angles of the isosceles triangle
Angle be 45 °；First prism unit is highly H1, and H1 is 22 μm -28 μm；Described
The height of two prism units is H2, and H2 is 27 μm -33 μm；In the prism structural layer, second
Prism unit is distributed between the first prism unit, and second rib is set every N number of first prism unit
Mirror unit, N is positive integer, N ∈ [5-8]；The diffusion particle is PMMA；The diffusion particle
Particle diameter is 5 μm -10 μm, and the diffusion particle accounts for the 15-20% of prism structure layer material gross weight.
Further, in preparation process, the raw material of the prism structural layer is first configured to coating fluid, institute
Stating coating fluid includes lower UV-cured resin glue, and diffusion particle.
Further, the UV-cured resin glue include UV-cured resin, curing agent,
UV absorbers, solvent.
The present invention also provides a kind of method for preparing described composite brightening film, and methods described includes following steps
Suddenly：
(1) transparent substrate layer is prepared；
(2) UV-cured resin glue and diffusion particle are configured to coating fluid；
(3) by coating solution on the first optical surface of transparent base, will be micro- by disk roller transfer technique
Structure transfer on the UV-cured resin glue with diffusion particle, consolidate by UV-cured resin glue
Change forms prism structural layer, that is, obtain described composite brightening film.
Compared with existing brightness enhancement film, composite brightening film provided by the present invention has diffusion, with compared with
Good luminance gain, and " cut-off " phenomenon can be mitigated, while also having anti-scratch effect.The present invention
The preparation method process is simple of the composite brightening film for being provided, it is easy to operate.
Brief description of the drawings
The cross-sectional view of the composite brightening film that Fig. 1 is provided for the present invention.
Specific embodiment
For the functional character and advantage that are more readily understood structure of the invention and to be reached, hereafter this is sent out
Bright preferred embodiment, and coordinate schema to be described below in detail：
Refer to shown in Fig. 1, the composite brightening film that the present invention is provided, including transparent base layer 10 and prism knot
Structure layer 20；The transparent base layer 10 includes relative the first optical surface and the second optical surface, the prism knot
Structure layer 20 is arranged on the first optical surface, and the prism structural layer 20 includes the of several parallel arrangements
One prism unit 202 and the second prism unit 203；There is diffusion particle 201 in the prism structural layer.
The cross section of first prism unit 202 is triangle, and the triangle is not isosceles triangle；Institute
The cross section of the second prism unit 203 is stated for isosceles triangle, the drift angle of the triangle is fillet；Institute
The height of the second prism unit 203 is stated more than the height of the first prism unit 202.
Embodiment 1
The present invention provides a kind of composite brightening film, and the composite brightening film includes transparent base layer and prism structural layer；
The transparent base layer includes relative the first optical surface and the second optical surface, and the prism structural layer is arranged on
On first optical surface, the prism structural layer includes first prism unit and second of several parallel arrangements
Prism unit；There is diffusion particle in the prism structural layer；The cross section of first prism unit is
Triangle, the triangle is not isosceles triangle；The cross section of second prism unit is isosceles three
Angular, the drift angle of the triangle is fillet；The second prism unit height H2 is more than the first prism
Cell height H1.
The raw material of the transparent base layer is polyethylene terephthalate (PET), the polyester raw material weight
Average molecular weight scope is 16000-20000, and the intrinsic viscosity value of the polyester raw material is 0.55dl/g.
The transparent base layer thickness is 50 μm.
The drift angle of the first prism structure unit (referred to as the first prism unit) is 50 °, two bottoms
The angle of pin is respectively 75 ° and 55 °, is highly 10 μm.
The drift angle of second prism unit is fillet, and radius of corner R is 1 μm, the both sides of the drift angle
Side angle is 50 °, and two angles at base angle are 65 °, are highly 15 μm.
The second prism unit is distributed between the first prism unit in the prism structural layer, every N number of
One prism unit sets second prism unit, and N is 20.
In the prism structural layer, the prism structure is made up of UV-cured resin, described ultraviolet
Light-cured resin is polyurethane resin.
The diffusion particle used in the prism structural layer is spherical organic diffusion particle PMMA, diffusion
The particle size range of particle is 1-5 μm, and diffusion particle PMMA accounts for the 10% of prism structure layer material gross weight.
Embodiment 2
The composite brightening film that such as embodiment 1 is provided, wherein,
The transparent base layer thickness is 200 μm.
The drift angle of the first prism structure unit is 80 °, the angle of two footing be respectively 40 ° and
60 °, be highly 50 μm.
The drift angle of second prism unit is fillet, and radius of corner R is 5 μm, and two side angles are
80 °, two angles at base angle are 50 °, are highly 60 μm.
The second prism unit is distributed between the first prism unit in the prism structural layer, every N number of
One prism unit sets second prism unit, and N is 1.
In the prism structural layer, the prism structure is made up of UV-cured resin, described ultraviolet
Light-cured resin is polyurethane resin.
The diffusion particle used in the prism structural layer is spherical organic diffusion particle PMMA, diffusion
The particle diameter of particle is 10-20 μm, and diffusion particle PMMA accounts for the 20% of prism structure layer material gross weight.
Embodiment 3
The composite brightening film that such as embodiment 1 is provided, wherein,
The transparent base layer thickness is 250 μm.
The drift angle of the first prism structure unit is 120 °, the angle of two footing be respectively 25 ° and
35 °, be highly 25 μm.
The drift angle of second prism unit is fillet, and radius of corner R is 3 μm, and two side angles are
120 °, two angles at base angle are 30 °, are highly 30 μm.
The second prism unit is distributed between the first prism unit in the prism structural layer, every N number of
One prism unit sets second prism unit, and N is 5.
In the prism structural layer, the prism structure is made up of UV-cured resin, described ultraviolet
Light-cured resin is epoxy resin.
The diffusion particle used in the prism structural layer is spherical organic diffusion particle PMMA, diffusion
The particle size range of particle is 5-10 μm, and diffusion particle PMMA accounts for the 15 of prism structure layer material gross weight
%.
Embodiment 4
The composite brightening film that such as embodiment 1 is provided, wherein,
The transparent base layer thickness is 350 μm.
The drift angle of the first prism structure unit is 130 °, the angle of two footing be respectively 20 ° and
30 °, be highly 10 μm.
The drift angle of second prism unit is fillet, and radius of corner R is 2 μm, and two side angles are
130 °, two angles at base angle are 25 °, are highly 15 μm.
The second prism unit is distributed between the first prism unit in the prism structural layer, every N number of
One prism unit sets second prism unit, and N is 10.
In the prism structural layer, the prism structure is made up of UV-cured resin, described ultraviolet
Light-cured resin is epoxy resin.
The diffusion particle used in the prism structural layer is spherical organic diffusion particle PMMA, diffusion
The particle size range of particle is 1-5 μm, and diffusion particle PMMA accounts for the 10% of prism structure layer material gross weight.
Embodiment 5
The composite brightening film that such as embodiment 1 is provided, wherein,
The transparent base layer thickness is 250 μm.
The drift angle of the first prism structure unit is 90 °, the angle of two footing be respectively 40 ° and
50 °, be highly 20 μm.
The drift angle of second prism unit is fillet, and radius of corner R is 3 μm, and two side angles are
90 °, two angles at base angle are 45 °, are highly 25 μm.
The second prism unit is distributed between the first prism unit in the prism structural layer, every N number of
One prism unit sets second prism unit, and N is 5.
In the prism structural layer, the prism structure is made up of UV-cured resin, described ultraviolet
Light-cured resin is acrylate.
The diffusion particle used in the prism structural layer is spherical organic diffusion particle PMMA, diffusion
The particle size range of particle is 5-10 μm, and diffusion particle PMMA accounts for the 15 of prism structure layer material gross weight
%.
Embodiment 6
The composite brightening film that such as embodiment 1 is provided, wherein,
The transparent base layer thickness is 250 μm.
The drift angle of the first prism structure unit is 90 °, the angle of two footing be respectively 40 ° and
50 °, be highly 25 μm.
The drift angle of second prism unit is fillet, and radius of corner R is 2 μm, and two side angles are
90 °, two angles at base angle are 45 °, are highly 30 μm.
The second prism unit is distributed between the first prism unit in the prism structural layer, every N number of
One prism unit sets second prism unit, and N is 5.
In the prism structural layer, the prism structure is made up of UV-cured resin, described ultraviolet
Light-cured resin is acrylate.
The diffusion particle used in the prism structural layer is spherical organic diffusion particle of rule
PMMA, the particle size range of diffusion particle is 5-10 μm, and diffusion particle PMMA accounts for prism structural layer material
The 15% of material gross weight.
Embodiment 7
The composite brightening film that such as embodiment 1 is provided, wherein,
The transparent base layer thickness is 250 μm.
The drift angle of the first prism structure unit is 90 °, the angle of two footing be respectively 40 ° and
50 °, be highly 30 μm.
The drift angle of second prism unit is fillet, and radius of corner R is 3 μm, and two side angles are
90 °, two angles at base angle are 45 °, are highly 35 μm.
The second prism unit is distributed between the first prism unit in the prism structural layer, every N number of
One prism unit sets second prism unit, and N is 5.
In the prism structural layer, the prism structure is made up of UV-cured resin, described ultraviolet
Light-cured resin is acrylate.
The diffusion particle used in the prism structural layer is spherical organic diffusion particle of rule
PMMA, the particle size range of diffusion particle is 5-10 μm, and diffusion particle PMMA accounts for prism structural layer material
The 15% of material gross weight.
Embodiment 8
The composite brightening film that such as embodiment 1 is provided, wherein,
The transparent base layer thickness is 200 μm.
The drift angle of the first prism structure unit is 90 °, the angle of two footing be respectively 40 ° and
50 °, be highly 22 μm.
The drift angle of second prism unit is fillet, and radius of corner R is 3 μm, and two side angles are
90 °, two angles at base angle are 45 °, are highly 27 μm.
The second prism unit is distributed between the first prism unit in the prism structural layer, every N number of
One prism unit sets second prism unit, and N is 5.
In the prism structural layer, the prism structure is made up of UV-cured resin, described ultraviolet
Light-cured resin is acrylate.
The diffusion particle used in the prism structural layer is spherical organic diffusion particle of rule
PMMA, the particle size range of diffusion particle is 6-8 μm, and diffusion particle PMMA accounts for prism structural layer material
The 15% of material gross weight.
Embodiment 9
The composite brightening film that such as embodiment 1 is provided, wherein,
The transparent base layer thickness is 225 μm.
The drift angle of the first prism structure unit is 90 °, the angle of two footing be respectively 40 ° and
50 °, be highly 25 μm.
The drift angle of second prism unit is fillet, and radius of corner R is 2 μm, and two side angles are
90 °, two angles at base angle are 45 °, are highly 30 μm.
The second prism unit is distributed between the first prism unit in the prism structural layer, every N number of
One prism unit sets second prism unit, and N is 6.
In the prism structural layer, the prism structure is made up of UV-cured resin, described ultraviolet
Light-cured resin is acrylate.
The diffusion particle used in the prism structural layer is spherical organic diffusion particle of rule
PMMA, the particle size range of diffusion particle is 6-8 μm, and diffusion particle PMMA accounts for prism structural layer material
The 17% of material gross weight.
Embodiment 10
The composite brightening film that such as embodiment 1 is provided, wherein,
The transparent base layer thickness is 250 μm.
The drift angle of the first prism structure unit is 90 °, the angle of two footing be respectively 40 ° and
50 °, be highly 28 μm.
The drift angle of second prism unit is fillet, and radius of corner R is 2 μm, and two side angles are
90 °, two angles at base angle are 45 °, are highly 33 μm.
The second prism unit is distributed between the first prism unit in the prism structural layer, every N number of
One prism unit sets second prism unit, and N is 8.
In the prism structural layer, the prism structure is made up of UV-cured resin, described ultraviolet
Light-cured resin is acrylate.
The diffusion particle used in the prism structural layer is spherical organic diffusion particle of rule
PMMA, the particle size range of diffusion particle is 5-10 μm, and diffusion particle PMMA accounts for prism structural layer material
The 20% of material gross weight.
Comparative example 1
A kind of brightness enhancement film, including transparent base layer and brightening structure, brightening structure are covered on transparent base layer.
Wherein,
The transparent base layer thickness is 250 μm.
The brightening structure is prism structure, and the drift angle of prism structure is 90 °, two angles of footing point
Not Wei 40 ° and 50 °, be highly 28 μm.
The prism structure is made up of UV-cured resin, and the UV-cured resin is acrylate
Resin.
The prism structure is contained within diffusion particle, and the diffusion particle is spherical organic diffusion of rule
Particle PMMA, the particle size range of diffusion particle is 5-10 μm, and diffusion particle PMMA accounts for prism knot
The 20% of structure layer material gross weight.
Comparative example 2
A kind of brightness enhancement film, including transparent base layer and brightening structure, brightening structure are covered on transparent base layer.
Wherein,
The transparent base layer thickness is 250 μm.
The brightening structure is prism structure, and the drift angle of prism structure is 90 °, two angles of footing point
Not Wei 45 °, be highly 28 μm.
The prism structure is made up of UV-cured resin, and the UV-cured resin is acrylate
Resin.
The prism structure is contained within diffusion particle, and the diffusion particle is spherical organic diffusion of rule
Particle PMMA, the particle size range of diffusion particle is 5-10 μm, and diffusion particle PMMA accounts for prism knot
The 20% of structure layer material gross weight.
Correlated performance method of testing：
(1) light transmittance：Using the disk print or the square piece print 3 of 5cm × 5cm of a diameter of 5cm,
Tested using the Hunterlab testers of model Color Quest XE, test result is averaged.
(2) luminance gain：A composite brightening film of the present invention of 32 cun of sizes is taken, 32 cun is placed on directly
In type backlight module, with luminance meter, (Suzhou Fu Shida scientific instrument Co., Ltd produces, model：
BM-7A its zero degree brightness) is measured, divided by zero degree brightness measured when not putting the brightness enhancement film, is obtained
To luminance gain value.Luminance gain value is higher, illustrates to place measured brightness after brightness enhancement film of the present invention and gets over
Height, the optical property of the brightness enhancement film that the present invention is provided is better.
(3) scratch resistant performance detection and evaluation method, are summarized as follows：
Using the sample of 80mm (MD) × 150cm (TD), outward appearance inspection is done under three wavelength fluorescent lamps
Look into, test zone is drawn with marking pen.Using DD-3086 electric pencil hardometers, selection draw point does resistance to
Test is scraped, the weight of scratch resistance counterweight is recorded, is as a result qualified not less than 200g.
(4) detection of Cut-off phenomenons and evaluation method, are summarized as follows：
32 cun of composite brightening films of the present invention of size are taken, is placed in 32 cun of down straight aphototropism mode sets, used
(Suzhou Fu Shida scientific instrument Co., Ltd produces luminance meter, model：BM-7A) detection Cut-off shows
As.
0 degree of visual angle of observation is to 35 degree of luminance-reduction situations at visual angle, and 35 degree of visual angles to 40 degree of visual angles
Luminance-reduction situation.Compared with 0 degree of visual angle to 35 degree of luminance-reduction speed at visual angle, if 35 degree regard
To 40 degree of luminance-reduction speed at visual angle quickly, then cut-off phenomenons are serious at angle；If luminance-reduction is fast
Degree is very fast, then cut-off phenomenons are general；If luminance-reduction speed is slightly fast, cut-off phenomenons are lighter；
If luminance-reduction speed is without substantially quickening, without cut-off phenomenons.
The main performance testing results of the brightness enhancement film that the embodiment of the present invention of table 1 and comparative example are provided
Can be drawn by the data of table 1, the composite brightening film that the present invention is provided has preferable luminance gain,
Scratch resistant property preferably, can solve the problem that or mitigate Cut-off phenomenons simultaneously.Particularly, embodiment 6, embodiment 8,
The combination property of the composite brightening film that embodiment 9 and embodiment 10 are provided is more preferable, wherein, embodiment 9 is carried
The combination property of the composite brightening film of confession is best.
The above, only presently preferred embodiments of the present invention is not intended to limit protection of the invention
Scope.Every impartial change done according to present invention and modification, are encompassed by patent of the invention
In the range of.
Claims (10)
1. a kind of composite brightening film, including transparent base layer and prism structural layer；The transparent base layer includes relative the
One optical surface and the second optical surface, the prism structural layer are arranged on the first optical surface, it is characterised in that
The prism structural layer includes first prism unit and the second prism unit of several parallel arrangements；The rib
There is diffusion particle in mirror structure sheaf.
2. composite brightening film according to claim 1, it is characterised in that the horizontal stroke of first prism unit
Section is triangle, and the triangle is not isosceles triangle；The cross section of second prism unit for etc.
Lumbar triangle shape, the drift angle of the triangle is fillet；The second prism unit height H2 is more than the first rib
Mirror unit height H1.
3. composite brightening film according to claim 1, it is characterised in that first prism unit is hung down
The cross section that the plane of straight prism direction of extension is intercepted is not isosceles triangle, the drift angle of the triangle
Angle is 50 ° -130 °, and the angle at two base angles of the triangle is respectively 20 ° -75 °.
4. composite brightening film according to claim 1, it is characterised in that second prism unit is hung down
The cross section that the plane of straight prism direction of extension is intercepted is isosceles triangle, and the drift angle of the triangle is circle
Angle, the fillet is the smooth curve of convex；The radius of the fillet is R, and the R is 1 μm -5
μm, the angle on two sides of the drift angle is 50 ° -130 °, two base angles of the isosceles triangle
Angle is 25 ° -65 °.
5. composite brightening film according to claim 1, it is characterised in that in the prism structural layer,
Second prism unit is distributed between the first prism unit, and one second is set every N number of first prism unit
Prism unit, N is positive integer, N ∈ [1-20].
6. brightening film with composite structure according to claim 1, it is characterised in that：The original of the transparent base
Expect to be macromolecule resin.
7. composite brightening film according to claim 1, it is characterised in that：The material of the prism structural layer
Including UV-cured resin glue and diffusion particle；The diffusion particle is dispersed in UV-cured resin glue
In water；The UV-cured resin glue is selected from acrylate glue, epoxy resin glue or poly-
One kind in urethane resin glue；The diffusion particle is organic diffusion particle PMMA；The diffusion particle
For spherical, particle diameter is 1 μm -20 μm, and the diffusion particle accounts for the 10%-20 of prism structure layer material gross weight
%.
8. composite brightening film according to claim 1, it is characterised in that：First prism unit is highly
It is H1, H1 is 10 μm -50 μm；The height of second prism unit be H2, H2 be 15 μm-
60μm。
9. composite brightening film according to claim 1, it is characterised in that：First prism unit is hung down
The cross section that the plane of straight prism direction of extension is intercepted is not isosceles triangle, the drift angle of the triangle
Angle is 90 °, and the angle at two base angles of the triangle is respectively 40 ° and 50 °；Second rib
The cross section that mirror unit is intercepted by the plane of vertical prism direction of extension is isosceles triangle, the triangle
Drift angle be fillet, the fillet is the smooth curve of convex；The radius of the fillet is R, the R
It is 2 μm -3 μm, the angle on two sides of the drift angle is 90 °, two bottoms of the isosceles triangle
The angle at angle is 45 °；First prism unit is highly H1, and H1 is 22 μm -28 μm；It is described
The height of the second prism unit is H2, and H2 is 27 μm -33 μm；In the prism structural layer, second
Prism unit is distributed between the first prism unit, and second prism is set every N number of first prism unit
Unit, N is positive integer, N ∈ [5-8]；The diffusion particle is PMMA；The particle diameter of the diffusion particle
It it is 5 μm -10 μm, the diffusion particle accounts for the 15-20% of prism structure layer material gross weight.
10. a kind of method of the composite brightening film prepared described in claim 1, it is characterised in that：Methods described bag
Include following step：
(1) transparent substrate layer is prepared；
(2) UV-cured resin glue and diffusion particle are configured to coating fluid；
(3) by coating solution on the first optical surface of transparent base, micro-structural is turned by disk roller transfer technique
Print on the UV-cured resin glue with diffusion particle, UV-cured resin glue curing forms rib
Mirror structure sheaf, that is, obtain described composite brightening film.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107610590A (en) * | 2017-09-25 | 2018-01-19 | 深圳市华星光电技术有限公司 | Multifunction advertising display screen |
| CN108680977A (en) * | 2018-05-04 | 2018-10-19 | 苏州奥美材料科技有限公司 | A kind of light-reflecting sheet and its preparation process |
| CN108957606A (en) * | 2018-07-05 | 2018-12-07 | 深圳创维－Rgb电子有限公司 | A kind of design method and compound film sheet of compound film sheet |
| CN109597243A (en) * | 2018-12-27 | 2019-04-09 | 凯鑫森(上海)功能性薄膜产业有限公司 | Liquid crystal display laminating film and LCD backlight mould group |
| CN110376793A (en) * | 2019-07-23 | 2019-10-25 | 安徽省蚌埠华益导电膜玻璃有限公司 | A kind of brightness enhancement film and its backlight module |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102789014A (en) * | 2012-07-13 | 2012-11-21 | 北京康得新复合材料股份有限公司 | Brightness enhancement film and display device |
| CN203164452U (en) * | 2012-12-21 | 2013-08-28 | 张家港康得新光电材料有限公司 | Brightness enhancement film |
| CN203259677U (en) * | 2012-12-28 | 2013-10-30 | 合肥乐凯科技产业有限公司 | Compound type brightening diffusion film |
| CN104608446A (en) * | 2015-01-16 | 2015-05-13 | 宁波长阳科技有限公司 | White reflective polyester film and preparation method thereof |
| CN105109166A (en) * | 2015-09-11 | 2015-12-02 | 宁波长阳科技有限公司 | Anti-adsorption coating type polyester film for reflection and preparation method thereof |
-
2015
- 2015-12-15 CN CN201510938383.1A patent/CN106886067A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102789014A (en) * | 2012-07-13 | 2012-11-21 | 北京康得新复合材料股份有限公司 | Brightness enhancement film and display device |
| CN203164452U (en) * | 2012-12-21 | 2013-08-28 | 张家港康得新光电材料有限公司 | Brightness enhancement film |
| CN203259677U (en) * | 2012-12-28 | 2013-10-30 | 合肥乐凯科技产业有限公司 | Compound type brightening diffusion film |
| CN104608446A (en) * | 2015-01-16 | 2015-05-13 | 宁波长阳科技有限公司 | White reflective polyester film and preparation method thereof |
| CN105109166A (en) * | 2015-09-11 | 2015-12-02 | 宁波长阳科技有限公司 | Anti-adsorption coating type polyester film for reflection and preparation method thereof |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107610590A (en) * | 2017-09-25 | 2018-01-19 | 深圳市华星光电技术有限公司 | Multifunction advertising display screen |
| CN108680977A (en) * | 2018-05-04 | 2018-10-19 | 苏州奥美材料科技有限公司 | A kind of light-reflecting sheet and its preparation process |
| CN108957606A (en) * | 2018-07-05 | 2018-12-07 | 深圳创维－Rgb电子有限公司 | A kind of design method and compound film sheet of compound film sheet |
| US11947137B2 (en) | 2018-07-05 | 2024-04-02 | Shenzhen Skyworth-Rgb Electronic Co., Ltd | Method for composite membrane and composite membrane |
| CN109597243A (en) * | 2018-12-27 | 2019-04-09 | 凯鑫森(上海)功能性薄膜产业有限公司 | Liquid crystal display laminating film and LCD backlight mould group |
| CN110376793A (en) * | 2019-07-23 | 2019-10-25 | 安徽省蚌埠华益导电膜玻璃有限公司 | A kind of brightness enhancement film and its backlight module |
| CN111505751A (en) * | 2020-06-16 | 2020-08-07 | 常州华威新材料有限公司 | Arch-shaped diffusion film for improving brightness and concealing atomization performance and preparation method thereof |
| CN113466978A (en) * | 2021-06-30 | 2021-10-01 | 纳晶科技股份有限公司 | Brightness enhancement film and display device |
| WO2023273915A1 (en) * | 2021-06-30 | 2023-01-05 | 纳晶科技股份有限公司 | Brightness enhancement film and display apparatus |
| CN113466978B (en) * | 2021-06-30 | 2023-07-07 | 纳晶科技股份有限公司 | Brightness enhancement film and display device |
| CN113534314A (en) * | 2021-07-21 | 2021-10-22 | 马鞍山东毅新材料科技有限公司 | Warping-resistant composite brightness enhancement film and production process thereof |
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