CN109633800A - A kind of diffusion barrier and optical film - Google Patents
A kind of diffusion barrier and optical film Download PDFInfo
- Publication number
- CN109633800A CN109633800A CN201910018730.7A CN201910018730A CN109633800A CN 109633800 A CN109633800 A CN 109633800A CN 201910018730 A CN201910018730 A CN 201910018730A CN 109633800 A CN109633800 A CN 109633800A
- Authority
- CN
- China
- Prior art keywords
- diffusion barrier
- diffusion
- coating
- particle
- substrate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/13362—Illuminating devices providing polarized light, e.g. by converting a polarisation component into another one
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mathematical Physics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Optical Elements Other Than Lenses (AREA)
- Laminated Bodies (AREA)
Abstract
The present invention provides a kind of diffusion barrier and optical films.Wherein diffusion barrier, including substrate, face-coating and back coating, coating fluid used in the face-coating includes resin, retarder thinner, the first diffusion particle；The solid content of the coating fluid is 20-40%, and first diffusion particle is organic filler and refractive index is 1.34-1.65.The application contained by consolidating for control front coating fluid, the refractive index of diffusion particle, and the wet-film thickness of further control coating controls the diverging light transmission rate and parallel light transmission rate of diffusion barrier, to prepare the diffusion barrier of high masking, Gao Huidu.
Description
Technical field
The present invention relates to optical film field more particularly to a kind of diffusion barrier and based on the optical film of the diffusion barrier.
Background technique
LCD display technology is display technology most widely used at present, is widely applied to TV, mobile phone, computer, pad, display
Device etc..In an lcd, diffusion barrier is important component part.In the backlight module of LCD, including lamp source, glue frame, reflector plate, lead
Tabula rasa, diffusion barrier, prismatic lens etc..The effect of diffusion barrier is that the point light source that lamp source is issued becomes area source.Diffusion barrier is divided into
Diffusion barrier and lower diffusion barrier.Diffusion barrier, using resin as skeleton, diffusion particle is uniformly arranged mainly using substrate as carrier, is come
Have the function that disperse light.
At present there is shielding difference in diffusion barrier.
The shielding influence factor of diffusion barrier includes: the material of substrate, diffusion particle material, diffusion particle partial size, coating
The factors such as thickness.
For factors above, diffusion barrier in the process of development, in order to improve shielding, usually uses the higher nothing of refractive index
The refractive index of machine particle, glue is close with PET base material, while accurately control particle/glue ratio prepares diffusion barrier.
The diffusion barrier developed with upper type is used, shielding is preferable, but really to sacrifice the luminance of diaphragm as cost.
Summary of the invention
It is an object of the invention in view of the above problems and insufficient, a kind of diffusion barrier and optical film are provided, with solution
The certainly above problem.
The technical scheme of the present invention is realized as follows:
One aspect of the present invention discloses a kind of diffusion barrier, including substrate, face-coating and back coating, the face-coating
Coating fluid used includes resin, diluent, the first diffusion particle；The solid content of the coating fluid is 20-40%, and described first expands
Shot is organic filler and refractive index is 1.34-1.65.
Preferably, the refractive index of first diffusion particle is 1.65 and/or the solid content of the coating fluid is 30%.
Preferably, first diffusion particle is selected from polymethyl methacrylate (PMMA), Vinalac 5920
(PBMA), polystyrene (PS), at least one of nylon (Nylon) and melamine.
Preferably, the first diffusion particle average grain diameter in 5 μm, 10 μm, 15 μm and 20 μm at least two
It is used in mixed way；It is preferred that 5 μm and 10 μm.
Preferably, the thickness range of the substrate is 50-250 μm；
The substrate is selected from optical grade PET film or the substrate is the dual brightness enhancement film of multi-layer film structure.
Preferably, the back coating includes glue, auxiliary agent and the second diffusion particle；
Preferably, second diffusion particle is selected from polymethyl methacrylate (PMMA), Vinalac 5920
(PBMA), polystyrene (PS), nylon (Nylon), polyurethane (PU), organosilicon and melamine；
Preferably, the density of the second diffusion particle is 250-1000ea/mm2。
Preferably, the diluent is fast solvent flashing and slow-evaporating solvent；
Preferably, the rate of volatilization of the fast solvent flashing is 100-260, and the slow vaporization rate is 10-80；
It is further preferred that the ratio of the slow-evaporating solvent and the fast solvent flashing is 2:1-4:1；
It is further preferred that the slow-evaporating solvent is butyl acetate；
It is further preferred that the fast solvent flashing is ethyl acetate.
Preferably, the scattering light transmission rate of the diffusion barrier is 50-85%, and the parallel light transmission rate of the diffusion barrier is little
In 20%；
Preferably, the scattering light transmission rate of the diffusion barrier is 75%.
Another aspect of the present invention also discloses a kind of optical film, including diffusion barrier as described above.
Preferably, optical film includes prism film and the diffusion barrier, and the prism film and the diffusion barrier pass through UV resin
Or PSA is directly fitted.
Further aspect of the present invention also discloses a kind of preparation method of diffusion barrier, comprises the following steps:
S1, the preparation of the diffusion barrier face-coating: substrate is unreeled to head region is applied, and the substrate includes the first optical surface
It winds, is contained after drying by face-coating coating liquid in the first optical surface of substrate with the second optical surface
The diffusion barrier semi-finished product A of face-coating；
S2, the preparation of the diffusion barrier back coating: diffusion barrier semi-finished product A described in step S1 is unreeled to painting head region,
By back coating coating liquid after the second optical surface of substrate, solidify by dry and UV, in the second optics of substrate
Surface forms back coating.
Preferably, the face-coating coating fluid includes the first diffusion particle, diluent, acrylic resin, dispersing agent, consolidates
Agent；The back coating includes glue, auxiliary agent and the second diffusion particle；First diffusion particle is organic filler；
Preferably, the Tg (glass transition temperature) of glue described in the back coating is less than 100 DEG C；The back side applies
Particle density is greater than 250-1000ea/mm2 in layer.
Further aspect of the present invention also discloses a kind of optical film, including as above described in any item diffusion barriers.
The utility model has the advantages that
Diffusion barrier and optical film provided by the invention are contained by controlling consolidating for front coating fluid, change the scattering of diffusion barrier
Light transmission rate and parallel light transmission rate.The solid of front coating fluid contains in conjunction with the refractive index of scattering particles simultaneously, so that diffusion barrier
Scattering light transmission rate (dif) be 50-85%, parallel light transmission rate (PT) be 0-20%, so that diffusion barrier of the present invention can have height
The effect of masking.
The wet-film thickness of further control coating controls the diverging light transmission rate and parallel light transmission rate of diffusion barrier,
To prepare the diffusion barrier of high masking, Gao Huidu.
Further, the dual brightness enhancement film using multi-layer film structure is crossed as substrate, compares existing structure, luminance
Improve 10-30%.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention, in the accompanying drawings:
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is shielding test schematic diagram of the present invention；
Fig. 3 is multilayer film working principle diagram of the present invention.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure
Except different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devices
It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and
" in ... lower section " two kinds of orientation.The device can also be positioned with other different modes and (is rotated by 90 ° or in other orientation), and
And respective explanations are made to the opposite description in space used herein above.
This application discloses a kind of high masking diffusion barriers, as shown in Figure 1, including that substrate 11, face-coating 12 and the back side apply
Layer 13, the face-coating 12 are excellent mainly including glue, that is, resin such as acrylic resin, diluent and the first diffusion particle
Select further includes dispersing agent, levelling agent and curing agent etc. in embodiment.
Guarantee high luminance while high masking to realize, containing admittedly for front coating fluid is 20-40% in the application.Described
First diffusion particle is organic filler, refractive index 1.34-1.65, preferably 1.65.By the adjustment contained admittedly, expansion is changed
Dissipate scattering light transmission rate and the parallel light transmission rate of film.The solid of front coating fluid contains in conjunction with the refractive index of scattering particles simultaneously,
So that the scattering light transmission rate (dif) of diffusion barrier be 50-85%, preferably 75%.Parallel light transmission rate (PT) is 0-20%, thus
Diffusion barrier of the present invention can have the high effect covered.
In preferred embodiment, containing admittedly for front coating fluid is 30%.
In another preferred embodiment, the refractive index of the first diffusion particle is 1.65.
To further increase luminance, in the application, the first diffusion particle is in 5 μm, 10 μm, 15 μm, 20 μm of average grain diameter
At least two be used in mixed way.It is preferred that 5um and 10um.
In another embodiment, to further increase luminance, it is 20-60um, this Shen that front coating fluid, which is coated with wet-film thickness,
Institute please, preferably 30um.
The first diffusion particle of the application is PMMA, PBMA, PS, NYLON, one of melamine or a variety of.
The diluent is ethyl acetate, butyl acetate, it is contemplated that the human health of environmental pollution and operator,
Aromatic solvents are not used as far as possible.
In the present invention, it is preferred that the diluent is fast solvent flashing collocation slow-evaporating solvent, and fast solvent flashing is waved
Hair rate is 100-260 (with toluene for 100), and slow vaporization rate be 10-80 (with toluene for 100), slow-evaporating solvent and is waved fastly
Effect is optimal when the ratio for sending out solvent is 2:1-4:1, and preferred diluent is butyl acetate and ethyl acetate.
Diffusion barrier back coating is made of glue, auxiliary agent and the second diffusion particle.Glue used in diffusion barrier back coating
There are heat curing type glue and UV glue.It specifically can be acrylic acid glue, the main function of glue is fixed particle, protection grain
Son, so that entirety be made to reach scratch resistance, anti-absorption, antistatic and other effects.The key index of glue includes adhesion, wear-resisting, hardness.
In the application, the glass transition temperature TG of back coating glue is low, can specifically be lower than 100 DEG C.
The type of second diffusion particle includes PMMA, PBMA, PU, PS, nylon, organosilicon, melamine etc..
Back coating is low-density diffusion particle, and density domination is in 250-1000ea/mm2。
The base material thickness 50-250um, substrate used can be monofilm, such as optical grade terephthalate
Ester (PET) film.
In preferred embodiment, multilayer film base material can be selected, such as using 3M DBEF core layer as substrate.Using the substrate,
Luminance can be promoted into 10-30%.Its principle is as shown in Figure 3.P, S therein are polarised light.The base material thickness 50-
250um。
It is as follows that the high masking diffusion barrier is just applying production stage: the PET base material of 50-250um is unreeled to head region is applied, will
The coating fluid intaglio plate roller coating mixed by the first diffusion particle, diluent, acrylic resin, levelling agent, dispersing agent, curing agent
It is overlying on substrate surface, with 15-35m/min speed, by drying oven solvent flashing, winding obtains diffusion barrier and just applies semi-finished product.
It is as follows that the described high masking diffusion barrier back applies production stage: the positive semi-finished product that apply are unreeled to applying head region, will be by the
The coating liquid that two diffusion particles, diluent, low TG point acrylic resin, levelling agent, dispersing agent, initiator mix is in base
Behind material surface, UV lamp, winding are passed through by drying oven solvent flashing with 20-40m/min speed.
Product after the completion of coating tests dif, PT, tests luminance, particle density, the indexs such as shielding.
Luminance test method: brightness photometer, SR-3, testing standard: SJ/T 11348-2006.
Dif, PT test equipment: NDH-2000, testing standard: JIS7136.
Shielding test method:
Optical thin film is put on rule, the difference in height of optical thin film and point rule is 10mm, and optical thin film flattens, and with point
The inspection surface of rule is horizontal.By optical thin film, the smallest point that human eye visual inspection optical thin film can be advised with grazing point, smallest point
Diameter be respective optical film carry out shielding test result.If Fig. 2 is shielding test schematic diagram.
Embodiment 1:
Using the bis- primer substrates of 188um, 40% ethyl acetate, 37.6% acrylic resin (50% consolidate contains),
19.9% particle, specially the melamine particle (refractive index 1.65) of 3um and 10um partial size, 0.2% levelling agent,
0.3% dispersing agent, 1.3% curing agent complete positive coating layer.Wet-film thickness 20um.
Using 54.6% butyl acetate, 42.8% acrylic resin, 0.7% dispersing agent, 0.3% it is antistatic
Agent, 0.1% 5um particle, 1.3% curing agent, preparation back coating layer.
After completing positive painting and back painting, the dif (shielding) of finished product is tested, PT, particle density, the results are shown in Table 1:
Table 1
| Characteristic | Test result |
| Haze% | 98.45 |
| T.t.% | 72.45 |
| Dif | 71.32 |
| PT | 1.13 |
| Particle density ea/mm | 245 |
| Luminance | 92% |
Embodiment 2
Using the bis- primer substrates of 188um, 35% ethyl acetate, 37.6% acrylic resin (50% consolidate contains),
21.2% particle, specially 3um and 10um partial size melamine particle (refractive index 1.65), 0.2% levelling agent, 0.3%
Dispersing agent, 1.3% curing agent complete positive coating layer, wet-film thickness 20um.
Using 54.6% butyl acetate, 42.8% acrylic resin, 0.7% dispersing agent, 0.3% it is antistatic
Agent, 0.1% 5um particle, 1.3% curing agent, preparation back coating layer.
After completing positive painting and back painting, the dif of finished product is tested, PT, particle density, shielding, the results are shown in Table 2:
Table 2
Embodiment 3
Using the bis- primer substrates of 188um, 40% ethyl acetate, 37.6% acrylic resin (50% consolidate contains),
19.9% particle, specially 3um and 10um partial size melamine particle (refractive index 1.65), 0.2% levelling agent, 0.3%
Dispersing agent, 1.3% curing agent complete positive coating layer, wet-film thickness 30um.
Using 54.6% butyl acetate, 42.8% acrylic resin, 0.7% dispersing agent, 0.3% it is antistatic
Agent, 0.1% 5um particle, 1.3% curing agent, preparation back coating layer.
After completing positive painting and back painting, the dif of finished product is tested, PT, particle density, shielding, the results are shown in Table 3:
Table 3
| Characteristic | Test result |
| Haze% | 99.45 |
| T.t.% | 72.45 |
| Dif | 72.05 |
| PT | 0.4 |
| Particle density ea/mm | 245 |
| Luminance | 90.0% |
Embodiment 4
Using the bis- primer substrates of 188um, 40% ethyl acetate, 37.6% acrylic resin (47% consolidate contains),
19.9% particle, specially the melamine particle (refractive index 1.65) of 5um and 10um partial size, 0.2% levelling agent,
0.3% dispersing agent, 1.3% curing agent complete positive coating layer.Wet-film thickness 20um.
Using 54.6% butyl acetate, 42.8% acrylic resin, 0.7% dispersing agent, 0.3% it is antistatic
Agent, 0.1% 5um particle, 1.3% curing agent, preparation back coating layer.
After completing positive painting and back painting, the dif of finished product is tested, PT, particle density, shielding, the results are shown in Table 4:
Table 4
| Characteristic | Test result |
| Haze% | 96.45 |
| T.t.% | 75.45 |
| Dif | 72.77 |
| PT | 2.68 |
| Particle density ea/mm | 245 |
| Luminance | 95% |
Comparative example 1
Using the bis- primer substrates of 188um, 45% ethyl acetate, 37.6% acrylic resin (50% consolidate contains),
14.9% particle, specially 5um, 10um silicon dioxide granule (refractive index 1.42), 0.2% levelling agent, 0.3% dispersion
Agent, 1.3% curing agent complete positive coating layer.Wet-film thickness 20um.
Using 54.6% butyl acetate, 42.8% acrylic resin, 0.7% dispersing agent, 0.3% it is antistatic
Agent, 0.1% 5um particle, 1.3% curing agent, preparation back coating layer.
After completing positive painting and back painting, the dif of finished product is tested, PT, particle density, shielding, the results are shown in Table 5:
Table 5
Comparative example 2
Using the bis- primer substrates of 188um, 40% ethyl acetate, 37.6% acrylic resin (50% consolidate contains),
19.9% particle, specially 5um, 10um silicon dioxide granule (refractive index 1.42), 0.2% levelling agent, 0.3% dispersion
Agent, 1.3% curing agent complete positive coating layer, wet-film thickness 10um.
Using 54.6% butyl acetate, 42.8% acrylic resin, 0.7% dispersing agent, 0.3% it is antistatic
Agent, 0.1% 5um particle, 1.3% curing agent, preparation back coating layer.
After completing positive painting and back painting, the dif (shielding) of finished product is tested, PT, particle density, the results are shown in Table 6:
Table 6
| Characteristic | Test result |
| Haze% | 78.20 |
| T.t.% | 89.65 |
| Dif | 70.10 |
| p.t | 19.55 |
| Particle density ea/mm | 242 |
| Luminance | 106% |
Comparative example 3
Using the bis- primer substrates of 188um, 40% ethyl acetate, 37.6% acrylic resin (50% consolidate contains),
19.9% particle (refractive index 1.42), specially 3um silicon dioxide granule, 0.2% levelling agent, 0.3% dispersing agent,
1.3% curing agent completes positive coating layer.Wet-film thickness 20um.
Using 54.6% butyl acetate, 42.8% acrylic resin, 0.7% dispersing agent, 0.3% it is antistatic
Agent, 0.1% 5um particle, 1.3% curing agent, preparation back coating layer.
After completing positive painting and back painting, the dif of finished product is tested, PT, particle density, shielding, the results are shown in Table 7:
Table 7
| Characteristic | Test result |
| Haze% | 89.20 |
| T.t.% | 65.65 |
| Dif | 55.10 |
| p.t | 7.1 |
| Particle density ea/mm | 242 |
| Luminance | 104% |
Further, for substrate and solvent, and following embodiment has been carried out
Embodiment 5
The diffusion barrier face-coating is made of following component:
Ethyl acetate: 11.805 mass parts；Butyl acetate: 35.415 mass parts；It is acrylic resin modified: 40.41 mass
Part；Diffusant (5um+8um): 9.39 mass parts；Additive: 0.5 mass parts；Curing agent: 2.48 mass parts.
It is positive to apply the DBEF using 92um as substrate, using gravure roll coating method, baking oven is passed through with the speed of 30m/min
Dry solvent, winding, coating thickness: 20um.
Finished product is cured in 60 DEG C of curing chambers, after curing for 24 hours, is tested.
Test its haze, 88%t.t.60%, luminance 126.8%.
Embodiment 6
The diffusion barrier face-coating is made of following component:
Ethyl acetate: 11.805 mass parts；Butyl acetate: 32.415 mass parts；It is acrylic resin modified: 40.41 mass
Part；, diffusant (5um+8um): 12.39 mass parts；Additive: 0.5 mass parts；Curing agent: 2.48 mass parts.
It is positive to apply the DBEF using 92um as substrate, using gravure roll coating method, baking oven is passed through with the speed of 30m/min
Dry solvent, winding, coating thickness: 20um
Finished product is cured in 60 DEG C of curing chambers, after curing for 24 hours, is tested.
Test its haze, 91%t.t.62%, luminance 120.7%.
Embodiment 7
The diffusion barrier face-coating is made of following component:
Ethyl acetate: 11.805 mass parts；Butyl acetate: 35.415 mass parts；It is acrylic resin modified: 40.41 mass
Part；, diffusant (5um+8um): 9.39 mass parts；Additive: 0.5 mass parts；Curing agent: 2.48 mass parts.
It is positive to apply the DBEF using 92um as substrate, using gravure roll coating method, baking oven is passed through with the speed of 30m/min
Dry solvent, winding, coating thickness: 25um
Finished product is cured in 60 DEG C of curing chambers, after curing for 24 hours, is tested.
Test its haze, 91%t.t.59%, luminance 120.6%.
Embodiment 8
The diffusion barrier face-coating is made of following component:
Ethyl acetate: 11.805 mass parts；Butyl acetate: 35.415 mass parts；It is acrylic resin modified: 40.41 mass
Part；Diffusant (5um+10um): 9.39 mass parts；Additive: 0.5 mass parts；Curing agent: 2.48 mass parts.
It is positive to apply the DBEF using 92um as substrate, using gravure roll coating method, baking oven is passed through with the speed of 30m/min
Dry solvent, winding.Coating thickness: 10um
Finished product is cured in 60 DEG C of curing chambers, after curing for 24 hours, is tested.
Test its haze, 87%t.t.59%, luminance 128%.
Comparative example 4
The diffusion barrier face-coating is made of following component:
Ethyl acetate: 11.805 mass parts；Butyl acetate: 35.415 mass parts；It is acrylic resin modified: 40.41 mass
Part；Diffusant (5um+10um): 9.39 mass parts；Additive: 0.5 mass parts；Curing agent: 2.48 mass parts.
It is positive to apply the PET using 92um as substrate, using gravure roll coating method, baking oven is passed through with the speed of 30m/min
Dry solvent, winding, coating thickness: 25um
Finished product is cured in 60 DEG C of curing chambers, after curing for 24 hours, is tested.
Test its haze, 95%t.t.75%, luminance 100%.
Comparative example 5
The diffusion barrier face-coating is made of following component:
Ethyl acetate: 11.805 mass parts；Butyl acetate: 55.415 mass parts；It is acrylic resin modified: 20.41 mass
Part；, diffusant (5um+10um): 9.39 mass parts；Additive: 0.5 mass parts；Curing agent: 2.48 mass parts.
It is positive to apply the DBEF using 92um as substrate, using gravure roll coating method, baking oven is passed through with the speed of 30m/min
Dry solvent, winding, coating thickness: 25um
Finished product is cured in 60 DEG C of curing chambers, after curing for 24 hours, is tested.
Test its haze, 95%t.t.59%, luminance 110%.
Comparative example 6
Ethyl acetate: 11.805 mass parts；Butyl acetate: 35.415 mass parts；It is acrylic resin modified: 40.41 mass
Part；Diffusant (5um): 9.39 mass parts；Additive: 0.5 mass parts；Curing agent: 2.48 mass parts.
It is positive to apply the DBEF using 92um as substrate, using gravure roll coating method, baking oven is passed through with the speed of 30m/min
Dry solvent, winding, coating thickness: 10um.
Finished product is cured in 60 DEG C of curing chambers, after curing for 24 hours, is tested.
Test its haze, 94%t.t.59%, luminance 112%.
The present invention is to be described by embodiment, but do not limit the invention, referring to description of the invention, institute
Other variations of disclosed embodiment, are such as readily apparent that the professional person of this field, such variation should belong to
Within the scope of the claims in the present invention limit.
Claims (10)
1. a kind of diffusion barrier, including substrate, face-coating and back coating, it is characterised in that: the face-coating is used to be applied
Cloth liquid includes resin, diluent, the first diffusion particle；The solid content of the coating fluid is 20-40%, first diffusion particle
For organic filler and refractive index is 1.34-1.65.
2. a kind of diffusion barrier according to claim 1, which is characterized in that the refractive index of first diffusion particle is 1.65
And/or the solid content of the coating fluid is 30%.
3. a kind of diffusion barrier according to claim 1, which is characterized in that first diffusion particle is selected from polymethyl
Sour methyl esters (PMMA), Vinalac 5920 (PBMA), polystyrene (PS), at least the one of nylon (Nylon) and melamine
Kind.
4. diffusion barrier according to claim 1, which is characterized in that the first diffusion particle average grain diameter be selected from 5 μm,
At least two in 10 μm, 15 μm and 20 μm are used in mixed way；It is preferred that 5 μm and 10 μm.
5. a kind of diffusion barrier according to claim 1, which is characterized in that the thickness range of the substrate is 50-250 μm；
The substrate is selected from optical grade PET film or the substrate is the dual brightness enhancement film of multi-layer film structure.
6. diffusion barrier according to claim 1, which is characterized in that the back coating includes glue, auxiliary agent and the second expansion
Shot；
Preferably, second diffusion particle is selected from polymethyl methacrylate (PMMA), Vinalac 5920
(PBMA), polystyrene (PS), nylon (Nylon), polyurethane (PU), organosilicon and melamine；
Preferably, the density of the second diffusion particle is 250-1000ea/mm2。
7. diffusion barrier according to claim 1, which is characterized in that the diluent is that fast solvent flashing and slow vaporization are molten
Agent；
Preferably, the rate of volatilization of the fast solvent flashing is 100-260, and the slow vaporization rate is 10-80；
It is further preferred that the ratio of the slow-evaporating solvent and the fast solvent flashing is 2:1-4:1；
It is further preferred that the slow-evaporating solvent is butyl acetate；
It is further preferred that the fast solvent flashing is ethyl acetate.
8. a kind of diffusion barrier according to claim 1, which is characterized in that the scattering light transmission rate of the diffusion barrier is 50-
85%, the parallel light transmission rate of the diffusion barrier is not more than 20%；
Preferably, the scattering light transmission rate of the diffusion barrier is 75%.
9. a kind of optical film, which is characterized in that including such as described in any item diffusion barriers of claim 1-8.
10. a kind of optical film as claimed in claim 9, which is characterized in that including prism film and the diffusion barrier, the prism
Film and the diffusion barrier are directly fitted by UV resin or PSA.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820442816 | 2018-03-30 | ||
| CN2018204429325 | 2018-03-30 | ||
| CN2018204428163 | 2018-03-30 | ||
| CN201820442932 | 2018-03-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109633800A true CN109633800A (en) | 2019-04-16 |
Family
ID=66060926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910018730.7A Withdrawn CN109633800A (en) | 2018-03-30 | 2019-01-09 | A kind of diffusion barrier and optical film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109633800A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114114499A (en) * | 2020-08-31 | 2022-03-01 | 宁波激智科技股份有限公司 | Polarization-maintaining optical film, polarization-maintaining diffusion film and double-sided fog polarization-maintaining diffusion film |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102540289A (en) * | 2011-12-31 | 2012-07-04 | 宁波长阳科技有限公司 | Optical diffusion film and preparation method thereof |
| CN106680912A (en) * | 2016-12-14 | 2017-05-17 | 合肥乐凯科技产业有限公司 | High-haze optical diffusion barrier |
| CN107272261A (en) * | 2017-07-28 | 2017-10-20 | 张家港康得新光电材料有限公司 | A kind of diffusion barrier and preparation method thereof |
-
2019
- 2019-01-09 CN CN201910018730.7A patent/CN109633800A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102540289A (en) * | 2011-12-31 | 2012-07-04 | 宁波长阳科技有限公司 | Optical diffusion film and preparation method thereof |
| CN106680912A (en) * | 2016-12-14 | 2017-05-17 | 合肥乐凯科技产业有限公司 | High-haze optical diffusion barrier |
| CN107272261A (en) * | 2017-07-28 | 2017-10-20 | 张家港康得新光电材料有限公司 | A kind of diffusion barrier and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114114499A (en) * | 2020-08-31 | 2022-03-01 | 宁波激智科技股份有限公司 | Polarization-maintaining optical film, polarization-maintaining diffusion film and double-sided fog polarization-maintaining diffusion film |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6852376B2 (en) | Antiglare film | |
| CN102565893B (en) | Optical diffusion film and preparation method thereof | |
| US7740945B2 (en) | Brightness enhancement film | |
| EP3075800B1 (en) | Coating material composition, and light-diffusing member manufactured using said coating material composition | |
| CN103612456B (en) | A kind of antistatic scratching-resistingprotective protective film and preparation method thereof | |
| CN102778712B (en) | Optical diffusion barrier | |
| KR20090056903A (en) | Multi-functional optic sheet | |
| CN104503010A (en) | Scratch-resistant optical diffusion film and preparation method for same | |
| CN103412356A (en) | Optical diffusion film and preparation method of optical diffusion film | |
| CN107340553B (en) | High-covering-capacity and high-brightness atomization film and preparation method thereof | |
| CN102109144B (en) | Lower diffusion sheet in backlight module and manufacturing method thereof | |
| CN107151527A (en) | Acrylate resin composition, optical film back coating for optical film back coating and preparation method thereof | |
| CN113614584A (en) | Light diffusion film, method for producing light diffusion film, optical member, display panel for image display device, and image display device | |
| CN106118442B (en) | A kind of optical film cold coating and its application | |
| CN109633800A (en) | A kind of diffusion barrier and optical film | |
| CN112285814B (en) | High-brightness high-covering composite optical film | |
| KR20210007949A (en) | Head mounted display | |
| JPH10219136A (en) | Glareproofing agent, glareproof film, and production thereof | |
| CN110007382A (en) | A kind of scratch resistance diffusion barrier and its processing technology | |
| US20060028723A1 (en) | Method and structure of a polarizer with uniform property of optics | |
| JP3879284B2 (en) | Surface-treated resin plate | |
| CN107422530A (en) | A kind of high sprayed film for covering high brightness and preparation method thereof | |
| CN109375302B (en) | Diffusion film and application thereof | |
| JP2009229556A (en) | Light-diffusing antiglare film, light-diffusive antiglare optical element, and image-displaying device | |
| TWI827243B (en) | Display |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190416 |