CN107831561A - A kind of multi-layer optical film - Google Patents
A kind of multi-layer optical film Download PDFInfo
- Publication number
- CN107831561A CN107831561A CN201611096522.1A CN201611096522A CN107831561A CN 107831561 A CN107831561 A CN 107831561A CN 201611096522 A CN201611096522 A CN 201611096522A CN 107831561 A CN107831561 A CN 107831561A
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- optical film
- layer optical
- prism
- film
- layer
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Classifications
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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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0006—Arrays
-
- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
The invention discloses a kind of multi-layer optical film, the multi-layer optical film includes：First layer optical film, the first layer optical film are prism film；Second layer optical film, the second layer optical film are one kind in prism film, diffusion barrier, microlens film；The second layer optical film is coated with adhesive phase, and first layer optical film and second layer optical film are bonded together by adhesive phase.Multi-layer optical film of the present invention, due to the design of prism structure, the more existing optical compound film bonding strength lifting more than 50% of bonding strength of this multi-layer optical film interlayer can be made.The lifting of bonding strength, make multi-layer optical film subsequently cut, assemble, be less prone in use layering, peel off the problems such as, raising cut yield, module group assembling yield.
Description
Technical field
The invention belongs to liquid crystal module technical field, and in particular to a kind of multi-layer optical film of liquid crystal module.
Background technology
Lcd technology is the mainstream technology of FPD, and liquid crystal display is widely used in mobile phone, tablet personal computer, shown
Show on the display devices such as device, television set.To ensure the taste of the picture of liquid crystal module, it is necessary to use multiple optics in backlight module
Film, such as prism film, diffusion barrier, microlens film.With super clear, slimming design the demand of liquid crystal module, blooming piece is set
Meter it is also proposed new demand.Common practice is such as prism film, diffusion barrier, microlens film will to be fitted in one by adhesive at present
Rising turns into an optical compound film, reaches the purpose of fitting specifically by the wedge angle of prism is pierced into adhesive.But
The diaphragm being bonded when subsequently cutting, assemble, using due to bonding strength not Gao Erhui be peeling, be layered the problems such as, make
Relatively low into membrane cutting yield, the appearance of liquid crystal module picture is bad, and module group assembling yield is low.
The content of the invention
The purpose of the present invention be overcome in the prior art optical compound film piece when subsequently cutting, assemble, using due to viscous
Close intensity the problems such as Gao Erhui is not peeling, is layered, there is provided a kind of multi-layer optical film of liquid crystal module.
The present invention relates to a kind of multi-layer optical film, the construction of multi-layer optical film includes：
First layer optical film, the first layer optical film are prism film, and the prism film is by base membrane layer, back coating and rib
Mirror structure sheaf forms；
Second layer optical film, the second layer optical film are prism film, diffusion barrier or microlens film；
The second layer optical film is coated with adhesive phase, by adhesive phase by first layer optical film and second layer optics
Film is bonded together.
Above-mentioned first layer optical film is prism film, and the basement membrane of the prism film is made up of polyethylene terephthalate
(Polyethylene terephthalate, abbreviation PET), its thickness are 38~300 μm；The micro-prism structure drift angle of prism film
The one kind of part in fillet, the straight angle or the coarse straight angle.
The side angle of microprism Facad structure two of first layer optical film is 80~100 °, prism circulation spacing be 30~
100μm.First layer optical film prism film back coating thickness is 2~8 μm, mist degree 5%~60%, and back side cloudy surface is using diffusion grain
Son coating or the mat surface coating two ways without diffusion particle.
The circular arc that it is certain radius on the top of prism that the micro-prism structure fillet of above-mentioned first layer optical film, which is, circular arc
Radius is 1~30 μm.
The platform that it is one fixed width on the top of prism that the micro-prism structure straight angle of above-mentioned first layer optical film, which is, i.e., it is overall
Micro-prism structure side can be considered a trapezium structure, berm width≤10 μm；
The coarse straight angle of above-mentioned first layer optical film is to make rugged coarse structure in the platform surface of the straight angle, is put down
Platform width≤10 μm, 0.1~3 μm of of coarse structure depth
The front of above-mentioned second layer optical film is prism film, diffusion barrier or the corresponding structure surface layer of microlens film, and the back side is
Adhesive phase.
The side angle of prism film front micro-prism structure two is 80~100 ° described in second layer optical film, prism circulation spacing
For 10~100 μm, basement membrane selects PET (polyethylene terephthalate), and thickness is 38~300 μm.The second layer optics
The direction that the prism of film prism film moves towards the prism trend of direction and first layer optical film prism film is in 45 °~135 ° of angle,
Preferably 90 °.
Second layer optical film is diffusion barrier, and the base membrane layer of the diffusion barrier is made up of polyethylene terephthalate, base
Thicknesses of layers is 38~300 μm；The diffusion barrier Facad structure using diffusion particle mixing acrylate resin coating form or
The surface roughness made using acrylate.
Second layer optical film is microlens film, and the base membrane layer of the microlens film is by polyethylene terephthalate system
Into base membrane layer thickness is 38~300 μm；The Facad structure of the microlens film is hemispherical dome structure, hemispherical dome structure radius 10
~100 μm；
Above-mentioned adhesive is coated on the back side of second layer optical film, adhesive thickness≤10 μm, and adhesive uses acrylic acid
One kind of ester resin, polyurethane acrylate resin, polyester acrylate resin, Epocryl etc. and several groups
Close.Adhesive curing mode is using one kind in ultraviolet light solidification or heat cure.
According to the second aspect of the invention, the invention provides a kind of specific preparation method of multi-layer optical film：
Make first layer optical film prism film；Make second layer optical film；In second layer optical film backsize adhesive；
First layer optical film is bonded and solidified with second layer optical film.
Compared with prior art the invention has the advantages that：Multi-layer optical film of the present invention, due to prism structure
Design, the bonding strength of this multi-layer optical film interlayer can be made relatively to show optical compound film bonding strength lifting more than 50%.Bonding
The lifting of intensity, make multi-layer optical film subsequently cut, assemble, be less prone in use layering, peel off the problems such as, raising is cut
Yield, module group assembling yield.
Brief description of the drawings
Fig. 1 is that the first layer optical film of straight angle prism structure is intended to；
Fig. 2 is with first layer optical film shown in Fig. 1, and the multi-layer optical film schematic diagram to be formed is bonded with prism film；
Fig. 3 is that the first layer optical film of rounded prisms structure is intended to；
Fig. 4 is with first layer optical film shown in Fig. 3, and the multi-layer optical film schematic diagram to be formed is bonded with microlens film；
Fig. 5 is that the first layer optical film of coarse straight angle prism structure is intended to；
Fig. 6 is with first layer optical film shown in Fig. 5, and the multi-layer optical film schematic diagram to be formed is bonded with diffusion barrier.
Fig. 7 is the multi-layer optical film schematic diagram of wedge angle prism structure composition in the prior art.
Embodiment
To make the object, technical solutions and advantages of the present invention of greater clarity, with reference to embodiment, to this
Invention is further described.It should be understood that these descriptions are merely illustrative, and it is not intended to limit the scope of the present invention.
Embodiment 1
Accompanying drawing 1 and the schematic diagram that accompanying drawing 2 is embodiment 1.
The thickness of first optical film basement membrane 206 is 125 μm；The spacing of prism structure 205 is 60 μm, and two side angle angle [alpha]s are
90 °, top straight angle berm width is 3 μm；5 μm of 207 thickness of back coating, mist degree 8%.
Second optical film is prism film, and the thickness of basement membrane 202 is 125 μm；The spacing of prism structure 201 is 24 μm, two sides folder
Angle angle beta is 90 °.
The angle that the prism trend of first optical film and the prism of the second optical film move towards is 90 °.
The thickness of adhesive phase 203 is 2 μm.By the second optical film prism film backsize adhesive phase 203, then with first
Optical film is bonded, and is solidified by ultraviolet light (ultraviolet light).
Embodiment 2
Accompanying drawing 3 and the schematic diagram that accompanying drawing 4 is embodiment 2.
The thickness of first optical film basement membrane 306 is 188 μm；The spacing of prism structure 305 is 50 μm, and two side angle angle γs are
93 °, top radius of corner is 5 μm；The thickness of back coating 307 is 4 μm, mist degree 15%.
Second optical film is microlens film, and the thickness of basement membrane 302 is 100 μm, and the radius of lenticule hemisphere 301 is 25 μm.
The thickness of adhesive phase 303 is 1 μm.By the second optical film microlens film backsize adhesive phase 303, then with
One optical film is bonded, and is solidified by heat cure mode.
Embodiment 3
Accompanying drawing 5 and the schematic diagram that accompanying drawing 6 is embodiment 3.
The thickness of first optical film basement membrane 406 is 250 μm.The spacing of prism structure 405 is 70 μm, and two side angle angle δs are
88 °, straight angle berm width is 5 μm, and platform coarse structure depth is 1 μm；The thickness of back coating 407 is 6 μm, mist degree 20%.
Second optical film is diffusion barrier, and the thickness of basement membrane 402 is 75 μm, and the thickness of diffusion layer 401 is 18 μm, mist degree 80%.
The thickness of adhesive phase 403 is 3 μm.By the second optical film diffusion barrier backsize adhesive phase 403, then with first
Optical film is bonded, and is solidified by ultraviolet light.
Comparative example
Accompanying drawing 7 is the composite membrane comparative example schematic diagram for being the fitting of wedge angle prism with existing optical compound film
The thickness of first optical film basement membrane 106 is 125 μm, and the spacing of prism structure 105 is 60 μm, and two side angle angle ε are
90 °, prism tip is horn structure；The thickness of back coating 107 is 5 μm, mist degree 8%.
Second optical film is prism film, and the thickness of basement membrane 102 is 125 μm；The spacing of prism structure 101 is 24 μm, two sides folder
Angle angle, θ is 90 °.
It is 90 ° that first optical film prism, which is moved towards with the angle of the second optical film prism trend,.
The thickness of adhesive phase 103 is 2 μm.By the second optical film prism film backsize adhesive phase 103, then with first
Optical film is bonded, and is solidified by ultraviolet light.
The multi-layer optical film made according to above example, test plunger bond strength.Method of testing is by multilayer optical
Film cuts into wide 25mm film strip, length 150mm, by 180 ° of peeling directions along the prism direction along the first optical film
Test bonding strength；Test result is shown in Table 1：
The multi-layer optical film bond strength test result of table 1
| Practical matter | Bonding strength |
| Embodiment 1 | 325g |
| Embodiment 2 | 310g |
| Embodiment 3 | 345g |
| Comparative example | 170g |
By comparing result, it is known that the bonding strength between its two layers of multi-layer optical film of the invention greatly promotes, then this hair
Bright multi-layer optical film subsequently cut, assemble, be less prone in use layering, peel off the problems such as, raising cut yield, module
Assemble yield.
Although embodiments of the present invention are described in detail,
But it should be understood that without departing from the spirit and scope of the present invention, can be to the reality of the present invention
The mode of applying makes various changes, replacement and change.
Claims (10)
1. a kind of multi-layer optical film, the multi-layer optical film includes：
First layer optical film, the first layer optical film are prism film, and the prism film is by base membrane layer, back coating and prism knot
Structure layer forms；
Second layer optical film, the second layer optical film are prism film, diffusion barrier or microlens film；
The second layer optical film is coated with adhesive phase, is glued first layer optical film and second layer optical film by adhesive phase
It is combined.
2. multi-layer optical film according to claim 1, it is characterised in that：The first layer optical film is prism film, described
The base membrane layer of prism film is made up of polyethylene terephthalate, and base membrane layer thickness is 38~300 μm；The prism structural layer
Micro-prism structure top corner portion be selected from fillet, the straight angle or the coarse straight angle；The back coating thickness of the prism film is 2~8 μm,
Mist degree is 5%~60%, and back side cloudy surface is coated with using diffusion particle or is coated with two ways without the mat surface of diffusion particle.
3. multi-layer optical film according to claim 2, it is characterised in that：The microprism Facad structure two of first layer optical film
Side angle is 80~100 °, and prism circulation spacing is 30~100 μm.
4. multi-layer optical film according to claim 2, it is characterised in that：Prism structural layer described in first layer optical film
For the fillet of micro-prism structure top corner portion to be the circular arc of certain radius on the top of prism, the radius of the circular arc is 1
~30 μm；The straight angle of the micro-prism structure top corner portion of prism structural layer described in first layer optical film be the top of prism be one
The platform of fixed width degree, overall micro-prism structure side are a trapezium structure, berm width≤10 μm；Described in first layer optical film
The coarse straight angle of the micro-prism structure top corner portion of prism structural layer be the straight angle platform surface make it is rugged coarse
Structure, berm width≤10 μm, 0.1~3 μm of coarse structure depth.
5. multi-layer optical film according to claim 1, the second layer optical film is prism film, diffusion barrier, microlens film
In one kind, it is characterised in that：The front of the second layer optical film is the corresponding construction of prism film, diffusion barrier or microlens film
Surface layer, the back side are adhesive phase.
6. multi-layer optical film according to claim 5, second layer optical film is prism film, it is characterised in that：The prism
The positive two side angle angles of the micro-prism structure of film are 80~100 °, and prism circulation spacing is 10~100 μm, the prism film
Base membrane layer be made up of polyethylene terephthalate, base membrane layer thickness be 38~300 μm；The prism trend of the prism film
The direction that the prism of direction and first layer optical film prism film moves towards is in 45 °~135 ° of angle.
7. multi-layer optical film according to claim 5, second layer optical film is diffusion barrier, it is characterised in that：The diffusion
The base membrane layer of film is made up of polyethylene terephthalate, and base membrane layer thickness is 38~300 μm；The diffusion barrier Facad structure
Formed using the coating of diffusion particle mixing acrylate resin or surface roughness is made using acrylate.
8. multi-layer optical film according to claim 5, second layer optical film is microlens film, it is characterised in that：It is described micro-
The base membrane layer of lens coating is made up of polyethylene terephthalate, and base membrane layer thickness is 38~300 μm；The microlens film
Facad structure is hemispherical dome structure, 10~100 μm of hemispherical dome structure radius.
9. multi-layer optical film according to claim 1, it is characterised in that：Described adhesive thickness degree≤10 μm, adhesive
It is a kind of or several using acrylate, polyurethane acrylate resin, polyester acrylate resin, Epocryl
Kind combination；Adhesive curing mode is solidified using ultraviolet light or heat cure.
10. the preparation method of multi-layer optical film, comprises the following steps described in a kind of claim 1：Make first layer optical film rib
Mirror film；Make second layer optical film；In second layer optical film backsize adhesive；By first layer optical film and second layer optics
Film is bonded and solidified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611096522.1A CN107831561A (en) | 2016-12-02 | 2016-12-02 | A kind of multi-layer optical film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611096522.1A CN107831561A (en) | 2016-12-02 | 2016-12-02 | A kind of multi-layer optical film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107831561A true CN107831561A (en) | 2018-03-23 |
Family
ID=61643596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611096522.1A Pending CN107831561A (en) | 2016-12-02 | 2016-12-02 | A kind of multi-layer optical film |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109575764A (en) * | 2018-11-09 | 2019-04-05 | 宁波激智科技股份有限公司 | A kind of coating composition for spreading the composite membrane laminating layer that adds lustre to and a kind of diffusion add lustre to composite membrane and preparation method thereof |
| CN109827148A (en) * | 2019-04-16 | 2019-05-31 | 凯鑫森(上海)功能性薄膜产业有限公司 | The even smooth film of LED illumination and its lamps and lanterns mould group |
| CN111443516A (en) * | 2019-09-25 | 2020-07-24 | 宁波激智科技股份有限公司 | Optical composite film and preparation method thereof |
| CN113433739A (en) * | 2021-07-23 | 2021-09-24 | 业成科技（成都）有限公司 | Optical film group, display panel and electronic equipment |
| CN114114502A (en) * | 2020-08-31 | 2022-03-01 | 宁波激智科技股份有限公司 | Polarization-maintaining optical film and interference-relieving polarization-maintaining composite prism film |
| CN114815394A (en) * | 2018-09-06 | 2022-07-29 | 群创光电股份有限公司 | Display device |
| WO2022252736A1 (en) * | 2021-05-31 | 2022-12-08 | 惠州视维新技术有限公司 | Composite optical film and display device |
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| CN109827148A (en) * | 2019-04-16 | 2019-05-31 | 凯鑫森(上海)功能性薄膜产业有限公司 | The even smooth film of LED illumination and its lamps and lanterns mould group |
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| CN111443516A (en) * | 2019-09-25 | 2020-07-24 | 宁波激智科技股份有限公司 | Optical composite film and preparation method thereof |
| CN114114502A (en) * | 2020-08-31 | 2022-03-01 | 宁波激智科技股份有限公司 | Polarization-maintaining optical film and interference-relieving polarization-maintaining composite prism film |
| WO2022252736A1 (en) * | 2021-05-31 | 2022-12-08 | 惠州视维新技术有限公司 | Composite optical film and display device |
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