CN100468085C - Multilayer-optical film and its production method - Google Patents
Multilayer-optical film and its production method Download PDFInfo
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- CN100468085C CN100468085C CNB2006100827630A CN200610082763A CN100468085C CN 100468085 C CN100468085 C CN 100468085C CN B2006100827630 A CNB2006100827630 A CN B2006100827630A CN 200610082763 A CN200610082763 A CN 200610082763A CN 100468085 C CN100468085 C CN 100468085C
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Abstract
The invention relates to a multi-layer optical film and the fabricating method. The multi-layer optical film comprises a basic layer, a middle layer with concave-convex pattern connected on the basic layer and a prism array layer formed on the middle layer with pattern. Whereinto, the difference of refractive index of middle layer with concave-convex patter and prism array layer generates concentration light entering into the prism and light outputting direction is changed by full reflection and refraction in the prism. Furthermore light dispersion is limited to increase brightness and decrease light loss. Concave-convex structure solidified on the middle layer can increase rigidity of optical film to avoid the phenomenon of uneven light and shadow generated by screen. Because of interlocking between the prism array layer and concave-convex pattern in the middle layer interface bonding strength is strengthened.
Description
Technical field
The present invention relates to a kind of optical thin film, refer in particular to a kind of manufacture method of multilayer-optical film.
Background technology
Backlight module in the LCD (backlight modulus) generally comprises brightness enhancement film (brightness enhancement films; BEF) or prismatic lens (prism sheets), this brightness enhancement film or prismatic lens can be with the bright dipping direct light direction of principal axis of light guide plate, increasing the brightness of LCD, and then save electric power, especially use the display at the NoteBook computer.Known prismatic lens is the optical thin film of a kind of light-permeable and tool prism array microstructure, this prismatic lens is that the inner full-reflection (total internalreflection) and the refraction (diffraction) that utilize prism change the direction that light is exported, and then the restriction scattering of light is to increase the loss of brightness and minimizing energy of light source, relevant patent is seen the PCT patent WO96123649 number, optical texture is seen Fig. 1, wherein prismatic lens comprises a base film M3 and prism array such as M4, M5, M6, M7, M8, wherein base film M3 (or title " supporting layer ") and prism array tool one interface Mi.Each prism such as prism M4 have the first prism facets Ma and the second prism facets Mb, occur simultaneously and form a summit in the sideline, top of two prism facets, and its angle can be between 70-120 degree or 80-100 degree, and prism facets does not need to be defined, and only need incline towards each other.In addition, thickness and the relation between prism height of base film M3 are unimportant, and the angle of cut of each prism facets Ma or Mb and base film M3 can be respectively 45 degree, but this angle is decided by the interval of face or the angle of summit.
The making of this prismatic lens is on the base film of a high penetration, and evenly photosensitive resin coating (as acryl resin (acrylic resin)) utilizes the crosslinked volume production moulding of stamping technique (imprinting) and ultraviolet light polymerization again.For most of backlight modules, putting a slice prism agreement that contracts a film or TV play to an actor or actress can increase by 60% briliancy, and two prismatic lenses that overlap make two summit prism line projection ground orthogonal thereto mutually, more can promote brilliancy of backlight module and reach 120% approximately.
Yet above-mentioned known prism Sheet structure, when light is issued to after scattered light enters prism structure from all directions from light guide plate, there is the incident light of 50-55% to be returned by the prism internal reflection and to be utilized once more approximately, because incident light repeatedly produces reflection and is utilized once more in prism, the energy of incident light is absorbed by prism successively, and then its energy of decaying; Few simultaneously light is partly gone out from prismatic refraction and can't be entered adjacent prisms and be used, and causes light loss.In addition, because the base film of prismatic lens generally all adopts PET or PC thermoplastic plastic to work as base material, these plastic rubber substrates are subjected to Effect of Environmental such as temperature, humidity easily, and produce warpage (waving) or frustrate song (buckling) phenomenon, especially near the light source place.If optical thin film produces warpage or frustrates song, especially in the fluorescent tube side, easily cause light leakage phenomena, make screen produce the Mura phenomenon of light and shade inequality.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of and can promote many performance multi-layer film optical thin film and manufacture method thereof, to improve even to solve the defective of above-mentioned known technology.
Technical solution of the present invention is: a kind of multilayer-optical film, and it comprises: a basic unit; One middle layer with relief pattern is connected with in this basic unit; And one the prism array layer be connected with on this middle layer, form the concaveconvex structure of reciprocal interlocking with this middle layer, thereby constitute a lamination type optical thin film.
The present invention also comprises the manufacture method of this optical thin film, comprises the following steps:
(1) in carrying out surface treatment in the basic unit: in this basic unit, apply one deck primer, or make corona treatment, or make Cement Composite Treated by Plasma;
(2) with transfer printing, molded and shaped mode is with photonasty or thermoset resin transfer printing or take shape in this basic unit, the relief pattern middle layer that has teat and recess with formation makes the resin or the adhesive curing typing in this middle layer under photo-thermal in this basic unit; And
(3) with a photonasty or thermoset resin or glue transfer printing or take shape in this middle layer and the basic unit, make and be shaped to upper strata with prism array structure, this resin or glue by gravity or back under pressure, soak and contain, seepage flow, fill among the recess in this middle layer, form the root of prism array layer and the convex-concave structure of base portion, under photo-thermal, make the resin or the adhesive curing on this upper strata be shaped to an optical thin film, it contains concaveconvex structure.
The present invention also proposes the another kind of method of making multilayer-optical film, comprises the following steps:
(1) in carrying out surface treatment in the basic unit: in this basic unit, be concaved with a plurality of recesses and on the surface, apply one deck primer, or make corona treatment, or make Cement Composite Treated by Plasma; And
(2) with a photonasty or thermoset resin or glue transfer printing or take shape in this basic unit, be shaped to upper strata with prism array structure, this resin or glue with gravity or back under pressure, soak and contain, seepage flow, fill among the recess of this basic unit, form the root of prism array layer and the convex-concave structure of base portion, under photo-thermal, make the resin or the adhesive curing on this upper strata be shaped to an optical thin film, it contains concaveconvex structure.
Characteristics of the present invention and advantage are: the present invention can promote many performance multi-layer formula optical thin film for a kind of, comprise: a transparent base layer, the middle layer of one tool relief pattern is connected with in this basic unit, and one the prism array layer be formed on this relief pattern middle layer, by being to constitute an one-body molded optical thin film.Wherein utilize the material of recessed or convex pattern in middle layer and the refractive index difference of prism array layer material, produce light focusing in prism, the direction that inner full-reflection (total internal reflection) and the refraction (diffraction) by prism of the light that focuses on changed light output again, and then the restriction scattering of light is to increase brightness and to reduce light loss; And strengthening its interface because of the reciprocal interlocking (Interlocking) between the middle layer of prism array layer and tool relief pattern follows or bond intensity.Simultaneously by the rigidity of the concavo-convex consolidated structures in middle layer with the increase optical thin film, and then can avoid plastic rubber substrate influenced by temperature, all environmental factors of humidity, and produce warpage (waving) or frustrate song (buckling), and make screen produce the Mura phenomenon of light and shade inequality.
The method of manufacturing multilayer-optical film of the present invention, can earlier the transparent base surface evenly be printed or impress the relief pattern of a middle layer photoresist (as acryl resin (acrylic resin)) or heat reactive resin, utilize the resin of stamping technique (imprinting) again with photonasty or photo-hardening type (photo-curing) (comprising UV glue) or thermosetting (thermo-curing), moulding has the prism array of a plurality of prism unit on this printed layers, the bottom of this prism array or root infiltrate in addition, be fed into, embed, insert or be molded in the depression in this middle layer, in gummed, solidify, chimeric, fasten, after molded and shaped, make the concavo-convex reciprocal interlocking (Interlocking) between the middle layer of prism array layer and tool relief pattern.
Description of drawings
Fig. 1 is the optical texture of known prismatic lens.
Fig. 2 is basic unit's synoptic diagram of optical thin film of the present invention.
Fig. 3 is the cut-away view in the present invention this middle layer of transfer printing in basic unit.
Fig. 4 is the cut-away view of moulding of the present invention the superiors prism array layer.
Fig. 5 is for to adopt the vertical view of looking from Fig. 3 figure.
Fig. 6 is the another embodiment of the present invention of modifying from Fig. 5, is the vertical view that picks up from the middle layer.
Fig. 7 is an another embodiment of the present invention vertical view (picking up from the middle layer).
Fig. 8 is an embodiment vertical view (picking up from the middle layer) more of the present invention.
Fig. 9 is an another embodiment of the present invention vertical view (picking up from the middle layer).
Figure 10 is the another embodiment of the present invention cut-away view.
The embodiment that Figure 11 modifies from Figure 10 for the present invention.
Figure 12 forms cut-away view for the optical thin film of two-layer of the present invention.
The main element symbol description:
1...... basic unit; 2...... pattern middle layer;
3...... prism array layer; 31...... root;
32...... base portion; 21...... teat;
22...... recess; 10...... bottom surface;
12...... recess; 11...... basal plane.
Embodiment
Technical scheme of the present invention and advantage that is had and effect can be able to distinct by the detailed description of following specific embodiment conjunction with figs..
Consult Fig. 2～4, optical thin film of the present invention comprises: a basic unit (supporting layer) 1, has the middle layer 2 and a prism array layer (upper strata) 3 of pattern.
This middle layer 2 with pattern is connected with or one-body molded being located on this basic unit 1, contains a plurality of teats 21 and is connected in this basic unit 1 with recess 22 footpaths, and wherein teat is good especially as if having curvature person in this case, but the size of curvature is not limited.
Look it by vertical view, this teat 21 can be strip as shown in Figure 5; Or lattice type as shown in Figure 6; Or concentric circles as shown in Figure 7; Or blockage shape as shown in Figure 8; Or circle as shown in Figure 9 or spherical structure, its moulding does not add restriction.Shape, arrangement, structure or setting of this teat 21 or recess 22 or the like, the present invention does not add restriction.
The material of this basic unit 1 can be selected from: the clear plastic base material of polyethylene terephthalate (PET) or polycarbonate (PC) etc.
This has the optional materials such as resin from photonasty or photo-hardening type (photo-curing) (comprising UV glue) or thermosetting (heat-curing) of material in the middle layer 2 of pattern.
This prism array layer 3 is selected from materials such as photonasty (containing UV glue) or thermosetting resin, can adopt commaterial with this middle layer 2.
This basic unit 1 can adopt with middle layer 2 and prism array layer 3 has identical refractive index or different refractive index materials, but is good with tool refractive index person inequality.
As Figure 10, shown in Figure 11, this pattern middle layer 2 can be modified to the middle layer with lenticule (micro-lens) function, as the refractive index in tool convex lens structures middle layer 2 among Figure 10 layers of prisms 3 greater than the upper strata, the convex lens in this middle layer 2 also can increase the optically focused phenomenon of lens; The refractive index in tool concavees lens structure middle layer 2 is less than the layers of prisms 3 on upper strata among Figure 11, and the concavees lens in this middle layer 2 also can increase the optically focused phenomenon of concavees lens.
The manufacture method of optical thin film of the present invention comprises the following steps:
1. in basic unit 1, carry out surface treatment:
In basic unit 1, apply one deck primer (prima coating), or make corona (corona) and handle, or make plasma (plasma) and handle, with the surface that promotes this basic unit's polymkeric substance affinity (affinity) with jelly bonds such as middle layer 2 that is about to transfer printing or moulding or prism array layers 3, strengthen the bond between lamination, and prevent to peel off.
With transfer printing, mode such as molded and shaped is with photonasty (containing UV glue) or thermoset resin transfer printing or take shape in this basic unit 1, has the middle layer 2 of teat 21 and recess 22 patterns in this basic unit 1 with formation, in photo-thermal such as UV lamp or under, make the resin or the adhesive curing typing in this middle layer 2 with heater heats.
3. with photonasty or thermoset resin (glue) transfer printing or take shape in this middle layer 2 and the basic unit 1, make the upper strata 3 that is shaped to (prism array) structure that has prism array, this resin (glue) gravity or back under pressure, soak and contain, seepage flow, fill among the recess 22 in this middle layer, form the root 31 and base portion 32 (that is convex-concave structure of prism array layer 3, especially as shown in Figure 4), under the irradiation of photo-thermal such as UV lamp or under the heater heats, make resin (glue) curing molding on this upper strata, after the demoulding the optical thin film of layers of prisms, it contains concaveconvex structure.
The prepared optical thin film of the present invention has following all advantages than known technology:
1. the concavo-convex consolidated structures in middle layer (root 31, base portion 32; Recess 22, teat 21) is formed in the optical thin film, can increase the rigidity of optical thin film, and then avoid plastic rubber substrate influenced by the thermograde of light source or all environmental factors of humidity and produce warpage (waving) or frustrate song (buckling), and make screen produce the Mura phenomenon of light and shade inequality.
2. go up between prism array layer 3 and middle layer 2 and the basic unit 1 because of this concaveconvex structure (root 31, base portion 32; Recess 22, teat 21) reciprocal interlocking (Interlocking) and bond, snap close and the jail of strengthening between lamination connect, unexpected peeling off can increase the service life.
3. recessed or protruding consolidated structures (root 31, the base portion 32 in middle layer; Recess 22, teat 21) with the refractive index difference of prism array layer, make it form convex lens and concavees lens effect, incident light produced optically focused in prism after, change the direction of light output again by prism inner full-reflection (total internal reflection) and refraction (diffraction), and then the restriction scattering of light, to increase brightness and to reduce light loss.
Transfer process in the relevant above-mentioned method for making can adopt notch board, flat board, web plate or surface printing, and the present invention does not give restriction.
The present invention can be as shown in figure 12, another embodiment of the present invention can be omitted this middle layer 2, and the top moulding that directly makes this basic unit 1 is with a plurality of recesses 12 and basal plane 11, in the resin (glue) of transfer printing, this upper strata prism lamination 3 of moulding in this basic unit 1, make the resin (glue) on upper strata 3 soak containing, filling, seepage flow and fill recess 12 in this basic unit 1, wait to solidify, after the moulding the firm junction phenomena of upper strata 3 and basic unit 1 formation reciprocal interlocking, and its concaveconvex structure (root 31, base portion 32; Recess 12, basal plane 11) enters again in the prism after can producing optically focused, can promote the quality and the view reception effect of optical sheet.Concaveconvex structure (root 31, base portion 32; Recess 12, basal plane 11) is formed in the optical thin film, then can increase the rigidity of optical thin film, and then avoid plastic rubber substrate to be subjected to temperature, all environmental impacts of humidity and produce warpage (waving) or frustrate song (buckling), and then make screen produce the Mura phenomenon of light and shade inequality.
Layers of material of the present invention should be made the self-induced transparency material.
Desirable entity of the present invention can be done suitable modification or change in not disobeying under spirit of the present invention and the category, and the present invention is real not to be limited.
Claims (4)
1. a method of making multilayer-optical film comprises the following steps:
(1) in a basic unit, carry out surface treatment:
In this basic unit, apply one deck primer, or make corona treatment, or make Cement Composite Treated by Plasma;
(2) with transfer printing, molded and shaped mode with a photonasty or thermoset resin or gum forming in this basic unit, the relief pattern middle layer that has teat and recess with formation makes the resin or the adhesive curing typing in this middle layer under photo-thermal in this basic unit; And
(3) with a photonasty or thermoset resin or gum forming in this middle layer and basic unit, make and be shaped to upper strata with prism array structure, the resin on this upper strata or glue by gravity or back under pressure, soak and contain, seepage flow, fill among the recess in this middle layer, form the root of prism array layer and the convex-concave structure of base portion, under photo-thermal, make the resin or the adhesive curing on this upper strata be shaped to an optical thin film, it contains concaveconvex structure.
2. the method for manufacturing multilayer-optical film as claimed in claim 1 is characterized in that, in the abovementioned steps (3), be with the mode of transfer printing with this photonasty or thermoset resin or gum forming in this middle layer and basic unit.
3. a method of making multilayer-optical film comprises the following steps:
(1) in a basic unit, carry out surface treatment:
In this basic unit, be concaved with a plurality of recesses and on the surface, apply one deck primer, or make corona treatment, or make Cement Composite Treated by Plasma; And
(2) with a photonasty or thermoset resin or gum forming in this basic unit, be shaped to upper strata with prism array structure, this resin or glue with gravity or back under pressure, soak and contain, seepage flow, fill among the recess of this basic unit, form the root of prism array layer and the convex-concave structure of base portion, under photo-thermal, make the resin or the adhesive curing on this upper strata be shaped to an optical thin film, it contains concaveconvex structure.
4. the method for manufacturing multilayer-optical film as claimed in claim 3 is characterized in that, in the abovementioned steps (2), be with the mode of transfer printing with this photonasty or thermoset resin or gum forming in this basic unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006100827630A CN100468085C (en) | 2006-05-25 | 2006-05-25 | Multilayer-optical film and its production method |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006100827630A CN100468085C (en) | 2006-05-25 | 2006-05-25 | Multilayer-optical film and its production method |
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| CN101078782A CN101078782A (en) | 2007-11-28 |
| CN100468085C true CN100468085C (en) | 2009-03-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103257478A (en) * | 2013-05-22 | 2013-08-21 | 张家港康得新光电材料有限公司 | Composite type optical film and manufacturing method thereof |
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| EP2120070B1 (en) | 2008-05-16 | 2014-03-12 | LG Electronics Inc. | Optical sheet, backlight unit, and liquid crystal display |
| KR100961702B1 (en) * | 2008-05-16 | 2010-06-09 | 엘지전자 주식회사 | Optical Sheet, Back Light Unit And Liquid Crystal Display Device Comprising The Same |
| CN102207565B (en) * | 2011-07-01 | 2014-07-09 | 凯鑫森(上海)功能性薄膜产业有限公司 | Multifunctional optical sheet, and backlight module and liquid crystal display device with optical sheet |
| TW201321863A (en) * | 2011-11-27 | 2013-06-01 | Compal Electronics Inc | Electronic device |
| CN104656371A (en) * | 2013-11-22 | 2015-05-27 | 光群雷射科技股份有限公司 | Grating stereoscopic moire film with two-layer structure and thinning manufacture method thereof |
| KR101666819B1 (en) * | 2016-01-29 | 2016-10-28 | 주식회사 비주얼넷 | Security image film manufacturing method with micron unit of thickness based on lanticular lenz |
| TWI695190B (en) * | 2018-08-15 | 2020-06-01 | 住華科技股份有限公司 | Optical film, display device, and manufacturing method for the same |
| CN114067687B (en) * | 2021-11-17 | 2023-06-20 | 合肥维信诺科技有限公司 | Display panel, display panel manufacturing method and display terminal |
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2006
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103257478A (en) * | 2013-05-22 | 2013-08-21 | 张家港康得新光电材料有限公司 | Composite type optical film and manufacturing method thereof |
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