CN103666296A - Double-sided adhesive film and manufacturing method thereof - Google Patents
Double-sided adhesive film and manufacturing method thereof Download PDFInfo
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- CN103666296A CN103666296A CN201310418049.4A CN201310418049A CN103666296A CN 103666296 A CN103666296 A CN 103666296A CN 201310418049 A CN201310418049 A CN 201310418049A CN 103666296 A CN103666296 A CN 103666296A
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Abstract
The invention provides a double-sided adhesive film and a manufacturing method thereof, wherein a transparent substrate can be attached to easily form a display panel. Meanwhile, the generation of bubbles, wrinkles and the like is less likely to occur. The double-sided adhesive film is used for the adhesion of a plurality of transparent substrates to form a display panel. The double-sided adhesive film is characterized by comprising a releasable film, and a laminated body formed on the releasable film and provided with a first adhesive layer and a decorative layer. When the transparent substrates are attached together by means of the double-sided adhesive film to form the display panel, the decorative layer is arranged on the laminated body in such a manner that the other part of the display panel, except a display part, is covered by the decorative layer.
Description
Technical field
The present invention relates to a kind of double-sided adhesive film and manufacture method thereof, can be used for the manufacture of the display panel of portable phone, digital camera, televisor, computer and other electronics.
Background technology
In the display panel of electronics etc., in the periphery of transparent display part, be provided with and consider hiding and the so-called ornamental portion of designability of inner distribution.This ornamental portion contains pattern, sign of having opacifying property and designability etc., in existing display panel, by stacked single or multiple lift pattern on the transparency carrier being formed by plastic film or glass, form ornament layer, be formed with the transparency carrier of ornament layer via double sticky tape and the laminating of other transparency carrier.Ornament layer is formed by screen printing mode mostly.Conventionally, can consider that infrared rays that infrared sensor uses sees through the barcode of film or management use etc., the film that the thickness of usining on transparency carrier more than 1 μ m forms is a kind of as ornament layer.
In TOHKEMY 2009-155503 communique (patent documentation 1) and TOHKEMY 2012-17386 communique (patent documentation 2), disclose a kind of for the transparent panel that is provided with ornamental portion is pasted to the double sticky tape that is fixed on image display device surface.
In TOHKEMY 2003-255847 communique (patent documentation 3), disclose a kind of double-sided adhesive sheet, it is in order to paste the covering window for the protection of the display surface of display unit, have part or all ornamental portion of the surrounding of covering display surface.
As prior art, in the situation that be formed with on the transparency carrier of ornament layer via the fit transparency carrier of another sheet of double sticky tape, due to the difference of altitude that the thickness by ornament layer produces, there is bad problems such as producing bubble or fold.Therefore, take to use and compare the comparatively adhesive tape of thickness more than twice with the thickness of ornamental portion, or after laminating, pressurize, heat treated (autoclave), or only the display part beyond the ornamental portion is filled transparent resin etc. for reducing the countermeasure of difference of altitude or bubble.
In the situation that using chemically reinforced glass as transparency carrier, owing to being difficult to after intensive treatment by glass processing, to desirable size, therefore, to carry out intensive treatment after the size that is display panel by glass processing.Therefore,, in the situation that printed decoration layer on the transparency carrier of chemically reinforced glass cannot multiaspect be processed, when polychrome printing, production efficiency reduces.Like this, because the yield rate loss producing in the bubble countermeasure operation after the printing process of ornament layer and the bonding process of transparency carrier, laminating can affect manufacturing cost significantly, therefore, using, the situation of transparency carrier of high price is inferior, countermeasures such as defective products need to being peeled off and repaired.
In patent documentation 3, motion has a kind of use film substrate as transparency carrier, and simultaneously sets in advance the double-sided adhesive sheet of ornamental portion at it.Like this, during the double-sided adhesive sheet that contains film substrate in use, because the contraction of transparency carrier and film substrate is poor, be exposed to environment lower time, tend to produce warpage etc. bad.
In addition, when double-sided adhesive sheet is fitted in to display panel, exist the film with rigidity to hinder bonding plane to adhere to the tendency of the mode effect of sticky surface.Therefore the bubble, having after easy generation bubble and laminating at this kind of double-sided adhesive sheet reduces the shortcomings such as effect is lower.
In addition, due to the slimming of display panel, for its transparency carrier, also there is the tendency of attenuation.But because the double-sided adhesive sheet that contains film substrate contains film substrate, therefore, the total thickness of display panel increases, and is unfavorable for slimming.
This kind bad can be by film substrate attenuation is reduced, but when using thin film substrate, due to many in manufacturing process, can produce fold or fracture etc. bad, therefore, not preferred.
In addition, from film strength and stable on heating viewpoint, consider, film substrate is used extension film mostly.Therefore,, in the situation that polariscope is seen display panel, extension film often becomes the unequal reason that produces outward appearance because of its double refraction.
Patent documentation 1: TOHKEMY 2009-155503 communique
Patent documentation 2: TOHKEMY 2012-17386 communique
Patent documentation 3: TOHKEMY 2003-255847 communique
Summary of the invention
In order to solve the problem of above-mentioned prior art, the object of the invention is to, a kind of double-sided adhesive film and manufacture method thereof are provided, can fit transparency carrier and easily form display panel, and, be difficult to produce bubble or fold etc. bad.
That is, double-sided adhesive film of the present invention is used for fitting a plurality of transparency carriers and forms display panel, it is characterized in that, described double-sided adhesive film has: separability film; Duplexer, it is formed on described separability film, and contain the first adhesive linkage and ornament layer, when the described transparency carrier of fitting by described double-sided adhesive film forms described display panel, described ornament layer is located at described duplexer to be present in the mode of the part beyond the part of the display part that is equivalent to described display panel.
Also can be that, when the described transparency carrier of fitting by described double-sided adhesive film forms described display panel, described ornament layer is located at described duplexer in the mode of the shaped as frame shape of the peripheral part of the described display part of the described display panel of formation encirclement.
Also can be that described the first adhesive linkage is located at described duplexer to cover the mode of described ornament layer.
In addition, double-sided adhesive film of the present invention, forms display panel for fitting a plurality of transparency carriers, it is characterized in that, described double-sided adhesive film has: separability film; Duplexer, it is formed on described separability film, and contain the first adhesive linkage, the second adhesive linkage and be located at described the first adhesive linkage and described the second adhesive linkage between ornament layer, when the described transparency carrier of fitting by described double-sided adhesive film forms described display panel, described ornament layer is located at described duplexer to be present in the mode of the part beyond the part of the display part that is equivalent to described display panel.
Also can be that, when the described transparency carrier of fitting by described double-sided adhesive film forms described display panel, described ornament layer is located at described duplexer to form the mode of shaped as frame shape of the peripheral part of the described display part that surrounds described display panel.
In the present invention, can between described the first adhesive linkage and described the second adhesive linkage, the first transparent resin layer be set.
In a mode, described the first transparent resin layer can be not to be located at described duplexer with the overlapping mode of described ornament layer yet.
In another way, described ornament layer also can be formed on described the first transparent resin layer.
In the present invention, also can between described the first adhesive linkage and described the second adhesive linkage, the second transparent resin layer be further set.
In a mode, described the second transparent resin layer can be not to be located at described duplexer with the overlapping mode of described ornament layer yet.
In another way, described the second transparent resin layer also can be located at described duplexer to cover the mode of described ornament layer.
In the present invention, also at least one party in described the first adhesive linkage and described the second adhesive linkage can be located to the inner side of the outer rim of described ornament layer.
And then, the manufacture method of double-sided adhesive film of the present invention, this double-sided adhesive film is used for fitting a plurality of transparency carriers and forms display panel, it is characterized in that, described manufacture method comprises following operation: (a) the surperficial part at temporary support body forms ornament layer; (b) on the part beyond a described part for described temporary support body and described ornament layer, form the first adhesive linkage; (c) stacked separability film on described the first adhesive linkage; (d) peel off described temporary support body and described the first adhesive linkage and described ornament layer are transferred to described separability film side; And (e) adhesive film that is formed with the second adhesive linkage on barrier film is laminated in to the face of described the first adhesive linkage and described ornament layer in described the second adhesive linkage mode relative with the face of described the first adhesive linkage and described ornament layer.
According to the present invention, not can due in barrier film or separability film etc., use while thering is the manufacture double-sided adhesive film that the material of rigidity produces conveying time the operations such as distortion bad, generation in existing extension film laminating each other etc. bad, can make stable double-sided adhesive film, and, when the laminating of transparency carrier, owing to thering is barrier film or the separability film of rigidity, peel off and be not assembled into display panel, therefore such bad in the time of, can preventing from using the existing double-sided adhesive sheet contain film substrate.Like this, according to the present invention, can not produce bubble or fold etc. bad, and can easily form display panel by being provided with the double-sided adhesive film laminating transparency carrier of ornament layer.
Accompanying drawing explanation
Fig. 1 (a) is the front elevation of double-sided adhesive film of the present invention, and Fig. 1 (b) is its sectional view, sectional view when Fig. 1 (c) is its laminating transparency carrier;
Fig. 2 (a) is other the front elevation of double-sided adhesive film of the present invention, and Fig. 2 (b) is its sectional view, sectional view when Fig. 2 (c) is its laminating transparency carrier;
The figure of one example of the making method of Fig. 3 (a)～(e) mean double-sided adhesive film of the present invention as shown in Figure 2;
Fig. 4 is other the sectional view of double-sided adhesive film of the present invention;
Fig. 5 (a) and (b) are another other sectional views of double-sided adhesive film of the present invention;
Fig. 6 (a) is other the sectional view of double-sided adhesive film of the present invention, sectional view when Fig. 6 (b) is its laminating transparency carrier;
Fig. 7 (a) is the example of making method of the double-sided adhesive film of embodiments of the invention, sectional view when Fig. 7 (b) is its front elevation, sectional view and laminating transparency carrier;
Fig. 8 (a) is other the example of making method of double-sided adhesive film of embodiment of the present invention, sectional view when Fig. 8 (b) is its front elevation, sectional view and laminating transparency carrier;
Fig. 9 is the sketch chart of film with the embodiment of reel form;
Figure 10 (a)～(d) is the front elevation of the display panel made in comparative example and makes in way and the sectional view of the display panel completing;
Figure 11 (a) and (b) mean the figure of the result of the evaluation experimental that embodiment and comparative example are evaluated.
Nomenclature
1: separability film
2:(first) adhesive linkage
3: ornament layer
4: the second adhesive linkages
5:(first) transparent resin layer
6: the second transparent resin layers
A: display part
B, B ': ornamental portion
SF: barrier film
TS, TS ': transparency carrier
TC: temporary support body
Embodiment
Below, with reference to embodiment, double-sided adhesive film of the present invention being described, the present invention is not limited to these embodiments.
Fig. 1 (a) means the front elevation of double-sided adhesive film of the present invention, and Fig. 1 (b) means its sectional view, and Fig. 1 (c) means by the double-sided adhesive film sectional view of a plurality of transparency carriers while forming display panel of fitting.The double-sided adhesive film of which of the present invention has separability film 1 and is formed at the duplexer that contains the first adhesive linkage 2 and ornament layer 3 on separability film 1.When forming display panel by double-sided adhesive film of the present invention laminating a plurality of (in this case two) transparency carrier TS, TS ', ornament layer 3 is located at duplexer in the mode of the part that is present in the display part A that is equivalent to display panel part in addition.
In mode of the present invention as shown in Figure 1, in order to protect adhesive linkage 2 not to be subject to the impact of dust and damage, be provided with barrier film SF.In addition, in which, when forming above-mentioned display panel with double-sided adhesive film laminating transparency carrier TS, TS ', ornament layer 3 is provided with duplexer in the mode of the shaped as frame shape (B in figure) of the peripheral part of the display part A of formation encirclement display panel.Also can word or pictures such as having the pattern of designability or sign be set at the region of this shaped as frame shape B.
According to the present invention, can the first adhesive linkage 2 be located to duplexer to cover the mode of ornament layer 3, because ornament layer 3 is located in adhesive linkage 2, therefore, can use the laminating apparatus laminating transparency carrier TS of common double-sided adhesive film.That is, peeling off barrier film SF, to become the level and smooth transparency carrier TS pressurization of clung body on one side paste double-sided adhesive film after on one side, can be by peeling off separability film 1, paste the transparency carrier TS ' of another sheet and form display panel.According to the present invention, because double-sided adhesive film contains ornament layer, therefore, there is no need as prior art, on transparency carrier, form in advance ornament layer.Therefore, can on the level and smooth transparency carrier that there is no difference of altitude more than 1 μ m, paste double-sided adhesive film, can reduce the generation of the bubble while pasting.
Fig. 2 (a) means other the front elevation of double-sided adhesive film of the present invention, and Fig. 2 (b) means its sectional view, and Fig. 2 (c) means by the double-sided adhesive film sectional view of a plurality of transparency carriers while forming display panel of fitting.The double-sided adhesive film of which of the present invention there is separability film 1, be formed at the first adhesive linkage 2, the second adhesive linkage 4 on separability film 1 and be located at the first adhesive linkage 2 and the second adhesive linkage 4 between ornament layer 3.When forming display panel by double-sided adhesive film of the present invention laminating a plurality of (in this case 2) transparency carrier TS, TS ', ornament layer 3 is located at duplexer in the mode of the part that is present in the display part A that is equivalent to display panel part in addition.
In mode of the present invention as shown in Figure 2, in order to protect the second adhesive linkage 4 not to be subject to the impact of dust and damage and to be provided with barrier film SF.In addition, in which, ornament layer 3 is located at duplexer in the mode of the shaped as frame shape (B in figure) of the peripheral part of the display part A of formation encirclement display panel.
The figure of one example of the making method of one mode of Fig. 3 (a)～(e) mean double-sided adhesive film of the present invention as shown in Figure 2.
The manufacture method of double-sided adhesive film of the present invention contains: in a surperficial part of temporary support body TC, when forming display panel, the part beyond the part of display part that is equivalent to display panel waits the operation (operation (a)) that forms ornament layer 3 by printing specifically; On part beyond an above-mentioned part of temporary support body TC and ornament layer 3, form the operation (operation (b)) of the first adhesive linkage 2; On the first adhesive linkage 2 by the operation (operation (c)) of the stacked separability films 1 such as lamination; Temporary support body TC is peeled off and is exposed the operation (operation (d)) of the face of first adhesive linkage 2 relative with temporary support body TC and ornament layer 3 from the first adhesive linkage 2 and ornament layer 3; On the face of the first adhesive linkage 2 exposing and ornament layer 3, in the mode relative with the second adhesive linkage 4, by lamination etc., be layered in the operation (operation (e)) that has formed the adhesive film of the second adhesive linkage 4 on barrier film SF.
According to this making method, can be on ornament layer 3 under dampness stacked coating form the first adhesive linkage 2, can be between ornament layer 3 and the first adhesive linkage 2 etc. formation do not have adhesive linkage alveolate and that binding face is level and smooth.Therefore, when the separability film of peeling off the double-sided adhesive film of making by manufacture method of the present invention fits in transparency carrier, only while pressurizeing, fit, just can prevent from becoming in prior art the generation of the bubble of problem, even if heating etc. process in the situation that, also time that can be required in the method with prior art is compared in the short period of time and processes, and can improve the production efficiency of display panel.
Fig. 4 is other the sectional view of double-sided adhesive film of mode of the present invention.In which, between the first adhesive linkage 2 and the second adhesive linkage 4, be provided with the first transparent resin layer 5.In mode as shown in Figure 4, to cover the mode of ornament layer 3, be provided with the first transparent resin layer 5.Like this, by the first transparent resin layer 5 is set, can on this first transparent resin layer 5, by printing, wait and form ornament layer 3.In the situation that using coating to form ornament layer 3, by being coated with the first transparent resin layer 5, the wettability of coating becomes better, can not be subject to adhesive linkage and temporary support body release layer impact and improve printing suitability.In addition, by adopting the first transparent resin layer 5 in the structure at double-sided adhesive film, the degree of freedom of making the operation design on double-sided adhesive film uprises.The first transparent resin layer 5 can be not overlapping with ornament layer 3 yet and the mode of filling up the difference of altitude of ornament layer 3 arrange.
Fig. 5 (a) and (b) are another other the sectional view of double-sided adhesive film of the present invention.In which, between the first adhesive linkage 2 and the second adhesive linkage 4 and then be provided with the second transparent resin layer 6.
In the mode as shown in Fig. 5 (a), not to be provided with the second transparent resin layer 6 with the overlapping mode of ornament layer 3, to fill up the difference of altitude of ornament layer 3.
In the mode as shown in Fig. 5 (b), to cover the mode of ornament layer 3, be provided with the second transparent resin layer 6, to fill up difference of altitude and the roughness on ornament layer 3.
Like this, by adopting the second transparent resin layer 6, can reduce the difference of altitude that the thickness because of ornament layer causes, also can with the adhesive film of drying regime, form adhesive linkage by lamination.In addition, even if use the stacked coating of bonding coating to form in the situation of adhesive linkage, by forming, also can be prevented the second transparent resin layer 6 to the effect of the immersion of the solvent of ornament layer 3 as Fig. 5 (b).In addition, because transparent resin layer can adopt the material good with connecting airtight of adhesive linkage, therefore, also there is the advantages such as closing force of the interlayer that improves the duplexer in double-sided adhesive film of the present invention.
In double-sided adhesive film of the present invention, by being provided with transparent resin layer 5, transparent resin layer 6, improve the degree of freedom of manufacturing process's design of double-sided adhesive film, can reduce bad in operation, can realize stable production.
Like this, according to the present invention, due to all can form of film manufacture from ornament layer to adhesive linkage, therefore, reduce the loss causing because of yield rate loss, in addition, can carry out the operation design of reel form, compare with the existing building method that forms ornament layer by lamination pattern on transparency carrier, in production efficiency, there is advantage.
In mode as shown in Figure 6, the first adhesive linkage 2 is located to the inner side (Fig. 6 (a)) of the outer rim of ornament layer 3.By adhesive linkage 2 being located to the inner side of the peripheral end of ornament layer 3, even also can tackle (Fig. 6 (b)) in the situation that the size of transparency carrier TS ' is little.As the method that forms the pattern of adhesive linkage 2, can adopt by the method for formation such as silk screen printing or form adhesive linkage 2 on separability film 1 after, be cut into the pattern of hope and the method for fitting etc.
Because the film formed display panel of use double-sided adhesive of the present invention can be for not containing the formation of the base material of such extension of using in prior art, therefore, tool has the following advantages:, be not subject to the birefringent panel characteristics affecting of base material and can be suitable for the design of the slimming of display panel.
Then, each formation of double-sided adhesive film of the present invention is described.
As separability film, can use the polyolefin resines such as polymethacrylate resin, polycarbonate resin, polyethylene terephthalate, polyethylene, polypropylene etc.In order to adjust the suitability of peeling off with adhesive linkage, also the release layer of silicon system or Synolac etc. can be located on film.The form of separability film can be selected the appropriate form of the corresponding film forming apparatus such as sheet form, reel form.
For the separability film as barrier film or temporary support body, also can use the material identical with above-mentioned separability film.By in advance a film in separability film and barrier film being peeled off and constructed, can adjust the weight of peeling off of these films.The peeling off weight and can adjust according to kind and the thickness of the kind of the thickness of film substrate and releasing agent and thickness, caking agent of film.
As ornament layer, can form by methods such as ink-jet, point gum machine, silk screen printing, intaglio printing, flexographic printing, offset printing and various application pattern or transfer printing mode, evaporation modes color or the pattern of desirable design.Can be in being used to form the coating of ornament layer or China ink the interpolation defoamer of corresponding film-forming method or wettability rising agent etc., also can coordinate as required solidifying agent etc.
The formation of the duplexer of double-sided adhesive film also, by the corresponding design of wishing in varied ground, can produce difference of altitude sometimes in ornamental portion.According to the present invention, can be with not only for the difference of altitude of ornamental portion and display part, the mode of the bubble in the time of also can tackling laminating for the difference of altitude in ornamental portion, forms double-sided adhesive film.
Because adhesive linkage is also formed at the display part of display panel, therefore, need to there is the transparency.As the caking agent kind that forms adhesive linkage, can use rubber series, acrylic acid series, vinyl ether system, urethanum system, silicon system etc., from for obtaining the viewpoint of degree of freedom of composition design of the characteristic of resistance to environmental characteristics and hope, preferably use (methyl) acrylic acid series caking agent.In addition, as the form of caking agent, can select the forms such as water-soluble, solvent system, latex system, solvent-free system, but direct stacked adhesive linkage in the situation that, preferably select the form that is difficult to dissolve ornament layer on ornament layer.
And, to adjust the cohesive force of adhesive linkage, or the flatness while improving masking and be object to the wettability of film substrate etc., can coordinate additive to caking agent.Have when adhesive linkage is used UV coating material solidified, ornament layer is by the low advantage of the risk of dissolution with solvents.
In the situation that adhesive linkage is used UV coating material solidified, because UV cured film surface when UV irradiates is often because oxygen obstruction produces curing bad, therefore, importantly by irradiating UV under the state at attaching film etc., or under inert atmosphere, irradiate the usual methods such as UV, blocking oxygen and form (with reference to UV curing technology introduction, p83, January 15, author in 1984 add that rattan looks clearly, the meeting of (strain) polymer publication).
The thickness of adhesive linkage can be set according to the design of display panel, but in order to give full play to bonding force, more than being preferably 5 μ m, more preferably more than 10 μ m.As the formation method of adhesive linkage, can select various mode of printings or coating method.
The first adhesive linkage and the second adhesive linkage can be set as identical material, and correspondence becomes the kind of transparency carrier and the characteristic of display panel of clung body and sets respectively the suitableeest thickness and kind.For example, in the situation that form ITO pattern on a side transparency carrier, in order to prevent the increase of the resistance value of timeliness, can only at the adhesive linkage that fits in this side's transparency carrier, select the acrylic adhesive of vinylformic acid acids.Because adhesive linkage improves the transparency of display part according to the transparency carrier of laminating, therefore, be preferably set to the composition of adjusting specific refractory power and improving transmitance.
Because transparent resin layer is also formed at the part of the display part that is equivalent to display panel, therefore, must there is the transparency.As transparent resin layer, can select acrylic acid series, polyester system, phenoxy group system, urethanum system, silicon system etc., from environment resistant viewpoint, preferably use (methyl) acrylic acid series.The in the situation that of forming ornament layer on transparent resin layer, the viewpoint from transparent resin layer contact for the version of each mode of printing and roller etc., preferably transparent resin layer corrugationless.In addition, by being printed on while forming ornament layer on transparent resin layer, not print bad mode, the preferential indefatigable material of the tools such as paint solvent that ornament layer is used of selecting is for transparent resin layer.Can by have by solidifying agent etc., improve solvent patience the material of composition for transparent resin layer.In the situation that using isocyanate curing agent to improve solvent resistance etc., because the yellowing by using the isocyanate curing agent of HDI system to be difficult for producing to be exposed in environment etc. is bad, so preferably.As transparent resin layer, wish to adopt 30 ℃ of vitrification points above, preferably to adopt 40 ℃ of above material or cured film.
The first transparent resin layer and the second transparent resin layer 2 can be used identical material, also can corresponding adhesive linkage and ornament layer, the kind of separability film, the characteristic of display panel is set respectively most suitable thickness and resin kind etc.
Identical with adhesive linkage, in transparent resin layer, also can use UV coating material solidified.
[embodiment]
Below, by embodiment and comparative example, more specifically the present invention will be described, and the present invention is not limited to this.
(embodiment 1)
With reference to Fig. 7 (a), first, as the separability film that becomes temporary support body TC, prepared to be provided with PET film (the rattan lumber industry system: DG2.5) of the thickness 50 μ m of silicon release layer.Silk screen printing silver mirror coating in demoulding aspect (Seiko Advance Ltd. system: Chrome Silver300MR), dry 100 ℃, 5 minutes, the pattern of formation thickness 1 μ m.Silk screen printing black paint (kingdom's China ink system: GLS-HF919-is black) is dried 5 minutes at 100 ℃ thereon, and the ornament layer 3 with the frame shape pattern of black layer of thickness 10 μ m is laminated in to temporary support body TC upper (operation (i)).The ornament layer 3 forming is like this located at the part of the peripheral part of the display part that is equivalent to display panel, and the inner side with the ornament layer 3 of frame shape pattern is equivalent to the display part of display panel.
Then, use the bonding coating of solvent-free acrylic acid series UV curing (Sony Chemical & Information Device system: 11X12A-2K-1), utilize applicator, to there is the thickness of inner side (display part) of the ornament layer 3 of frame shape pattern, become stacked coating the first adhesive linkage 2 of mode of 30 μ m, to cover the part (operation (ii)) of the display part that is equivalent to ornament layer 3 and temporary support body TC.
PET film (Di Ren Du Pont system: A31, thickness: 38 μ m) as separability film 1 at the first adhesive linkage 2 upper strata pressure zone silicon release layers.Use mercury lamp light source, under accumulative total light quantity: 2000mJ, via separability film 1 isolation oxygen, irradiate UV, the first adhesive linkage 2 is cured to processing, make the adhesive sheet (operation (iii)) with ornament layer.
In addition, as barrier film SF, prepare PET film (the Di Ren Du Pont system: A43, thickness: 38 μ m) with silicon release layer.In demoulding aspect, the adhesive linkage coating that mode with solid content 30wt% is dissolved in to vinyl acetic monomer by the isobutyl acrylate of weight-average molecular weight (Mw) 400,000 is coated with applicator, at 100 ℃, be dried 2 minutes, form the second adhesive linkage 4 of thickness 10 μ m, make the film with adhesive linkage.
Finally, the separability film (DG2.5) of the temporary support body of the previous adhesive sheet with ornament layer is peeled off, the face (operation (iv)) that exposes the first adhesive linkage 2 and ornament layer 3, makes the second adhesive linkage 4 of the other film with adhesive linkage of making relative, fits and lamination (operation (v)).Die cutting die by large blade CB is cut into laminated film the size of 60mm * 120mm, makes double-sided adhesive film (operation (vi)).
With reference to Fig. 7 (b), peel off the barrier film SF of the double-sided adhesive film of making, fit in the sodica calx glass of the thick 1.1mm of transparency carrier TS(, size 60mm * 120mm), bonding across the 1 use scraper pressurization of separability film., separability film 1 peeled off, Yi Bian make the transparency carrier TS ' warpage of another sheet, Yi Bian use after scraper pressurizing attaching across glass, by autoclave, process, make display panel thereafter.Display panel possesses the ornamental portion of the peripheral part that surrounds display part A, and it utilizes by ornament layer 3(B ') pattern that forms is partly with by ornament layer 3(B) the shaped as frame shape that forms partly forms.
(embodiment 2)
Identical with embodiment 1, be formed to pattern.Silk screen printing black paint (kingdom China ink system: GLS-HF919-China ink+GSL is reinforcer=100wt%+0.5wt% for glass) thereon, dry at 90 ℃, thermofixation 30 minutes, the frame shape pattern of the black layer of stacked thickness 10 μ m, forms ornament layer 3 in the part of peripheral part that is equivalent to the display part of display panel.
Then, the isobutyl acrylate of weight-average molecular weight (Mw) 400,000 is dissolved in to vinyl acetic monomer in the mode of solid content 30wt%, prepares the coating that adhesive linkage is used.Use applicator, with the mode application above-mentioned coating of the thickness 20 μ m of display part, to cover ornament layer 3 and temporary support body TC, at 100 ℃ dry 2 minutes, form the first adhesive linkage 2.
On the first adhesive linkage 2 as PET film (the Di Ren Du Pont system: A31, thickness: 38 μ m), the metal sheet that is adjusted to 40 ℃ by use temperature carries out 0.025MPa/cm of separability film 1 lamination band silicon release layer
2pressurization, the surperficial bending of adhesive linkage is smooth.
Then, use the method identical with embodiment 1, make double-sided adhesive film, use this double-sided adhesive film, make display panel.
(embodiment 3)
By the method identical with embodiment 1, make the adhesive sheet with ornament layer that is formed to the first adhesive linkage 2.Adhesive tape (day eastern electrician's system: CS6661T) as using with the film of adhesive linkage of the adhesive linkage (the second adhesive linkage 4) of thickness 25 μ m will be formed with on the PET film with silicon release layer at thickness 50 μ m, peeling off of the adhesive sheet with ornament layer on the face of separability film (DG2.5) of temporary support body, the adhesive linkage of the film of close binder pressure zone adhesive linkage, with the die cutting die of large blade, be cut into the size of 60mm * 120mm, make double-sided adhesive film.
Then, use this double-sided adhesive film, use the method identical with embodiment 1, form display panel.
(embodiment 4)
With reference to Fig. 8 (a); acrylic resin powder (common prosperity society chemistry system: OLYCOX KC7000, vitrification point: 45 ℃) is dissolved in to the mixed solvent of toluene/methyl ethyl ketone=50/50; make the solution of solid content 30%; prepare relative acrylic resin 100wt%, having coordinated 1wt%HDI is isocyanate curing agent (Asahi Chemical Industry's chemistry system: acrylic coating DURANATE24A-100).Separability film as temporary support body TC, use is provided with PET film (the rattan lumber industry system: DG2.5, thickness: 50 μ m) of silicon release layer, in demoulding aspect, use after applicator application acrylic coating, dry at 120 ℃, thermofixation is processed 30 minutes, forms the transparent resin layer 5 of thickness 10 μ m.
On transparent resin layer 5, form the ornament layer 3 with pattern, frame shape pattern, use the method identical with embodiment 1, make double-sided adhesive film, use this double-sided adhesive film, make display panel.(with reference to Fig. 8 (b))
(embodiment 5)
Method with identical with embodiment 4, is formed to ornament layer 3.Then, in not overlapping with ornament layer 3 mode, at the region silk screen printing polyester that is equivalent to the temporary support body TC of display part, be that (kingdom's China ink is manufactured system to Clear paint: TOC-HF-medium+106 solidifying agent=100+2), dry at 90 ℃, solidification treatment 30 minutes, forms the second transparent resin layer 6 of thickness 10 μ m.
Then, adhesive tape (day eastern electrician's system: CS6661T) as the film use with adhesive linkage, form the first adhesive linkage 2 to cover the closely sealed and lamination of the mode of ornament layer 3 and the second transparent resin layer 6 of the adhesive linkage (the first adhesive linkage 2) of thickness 25 μ m will be formed with on the PET film with silicon release layer at thickness 50 μ m (separability film 1).
Then, by the method identical with embodiment 3, make the double-sided adhesive film with the structure as shown in Fig. 5 (a), use this double-sided adhesive film production display panel.
(embodiment 6)
By the method identical with embodiment 4, be formed to ornament layer 3.Then, use solvent-free acrylic acid series UV curable coating (Japan's China ink system: TU498FDSS CT medium), by applicator, to cover ornament layer 3 and to be equivalent to mode stratification second transparent resin layer 6 of part of the display part of temporary support body TC.On the second transparent resin layer 6, as separability film 1, the PET film of lamination band silicon release layer (Di Ren Du Pont system: A31, thickness: 38 μ m).Use mercury lamp light source, with accumulative total light quantity: 2000mJ, via separability film 1, isolate oxygen and irradiate UV, form the second transparent resin layer 6 of the thickness 20 μ m of solidification treatment, make the adhesive sheet with ornament layer.
Then, by the method identical with embodiment 5, make the double-sided adhesive film with the structure as shown in Fig. 5 (b), use this double-sided adhesive film, make display panel.
(embodiment 7)
As the separability film that becomes the reel form of temporary support body TC, prepared to be provided with PET film (the rattan lumber industry system: DG2.5, thickness: 100 μ m, width: 230mm, length: 500m) of silicon release layer.In demoulding aspect, with nozzle coating machine by the acrylic coating identical with embodiment 4 with width 210mm application masking, at 120 ℃ dry 3 minutes, made the film of the reel form of the transparent resin layer 5 with thickness 10 μ m.The reel drum film that has formed the first transparent resin layer 5 is at room temperature placed 7 days to solidification treatment the first transparent resin layer 5.The screen process press that uses volume to volume is identically formed ornament layer 3 with embodiment 1 on transparent resin layer 5.
Then, to cover ornament layer 3 and to be equivalent to the mode of part of the display part of temporary support body TC, by the solvent-free acrylic acid series UV of cutter coating machine application curable coating (Japan's China ink system: TU498FDSS CT medium), form the second transparent resin layer 6.In order to isolate oxygen, by thickness: the PET film with silicon release layer of 38 μ m, width: 230mm, length: 500m (Di Ren Du Pont system: stripping surface A31) is laminated to application face.By using mercury lamp light source, with accumulative total, light quantity: 2000mJ irradiates UV via the PET film with release layer, after solidification treatment the second transparent resin layer 6, peels off the PET film with release layer, makes the film of the reel form of the transparent resin layer 6 with thickness 20 μ m.
Then, use using as barrier film SF, thickness: adhesive tape (day eastern electrician's system: CS6661T) that has formed the second adhesive linkage 4 of thickness 25 μ m on the PET film with silicon release layer of 50 μ m, width: 220mm, length: 500m, the second adhesive linkage 4 carries out closely sealed in the mode of covering ornament layer 3 and transparent resin layer 6, with the mode lamination of volume to volume.
Peel off and become the separability of temporary support body film (DG2.5), on the first transparent resin layer 5, use as separability film 1, use, thickness: adhesive tape (day eastern electrician's system: CS6661T) that has formed the first adhesive linkage 2 of thickness 25 μ m on the PET film with silicon release layer of 50 μ m, width: 210mm, length: 500m, the first adhesive linkage 2 and the first transparent resin layer 5 is closely sealed, as shown in Figure 9, with reel form lamination, form.
Then, use the method identical with embodiment 1, make double-sided adhesive film, use this double-sided adhesive film, make display panel.
(embodiment 8)
By the method identical with embodiment 7, be formed to the first transparent resin layer 5.Then,, on the first transparent resin layer 5, as the first ornament layer, by resin relief, print the solvent-free UV of being curing silver coating (southeast China ink system: APO silvery white mouthful), and after UV solidifies, 2 μ m form patterns with thickness.As the second ornament layer, using solvent-free is thereon UV curing black paint (Japan's China ink system: FDS China ink TK mouth), print three sublevel poststacks, with the black layer pattern of thickness 10 μ m stratification frame shapes by resin relief.
Then, use the method identical with embodiment 7, make double-sided adhesive film, use this double-sided adhesive film, make display panel.
(embodiment 9)
By the method identical with embodiment 7, make double-sided adhesive film.As transparency carrier TS, prepare the PET film of thick 0.1mm, 60mm * 120mm, peel off the barrier film SF of double-sided adhesive film, across separability film 1 use scraper, pressurize and adhere.Then, separability film 1 is peeled off, the transparency carrier TS ' of another sheet of fitting (unidimensional PET film), pressurizes with scraper across transparency carrier and adheres, and as display panel, makes.
(comparative example 1)
With reference to Figure 10, as transparency carrier TS, prepare the sodica calx glass of thickness 1.1mm, 60mm * 120mm.Silk screen printing silver mirror coating (Seiko Advance Ltd. system: Chrome Silver300MR), be dried 5 minutes at 100 ℃, form the pattern B ' of thickness 1 μ m.Silk screen printing black paint (kingdom's China ink system: GLS-HF919-is black) is dried 5 minutes at 100 ℃ thereon, with the black layer pattern B of the stacked printing frame of thickness 10 μ m shape, makes the transparency carrier TS that ornamental portion is formed to the surrounding of display part A.
Using the thickness using as barrier film SF: adhesive tape (day eastern electrician's system: CS6661T) be cut into after 60mm * 120mm that has formed the adhesive linkage 2 of thickness 25 μ m on the PET film with silicon release layer of 50 μ m, closely sealed adhesive linkage 2, and be laminated on the transparency carrier TS that has formed ornament layer 3.Peel off the PET film with release layer, as another transparency carrier TS ', on one side unidimensional glass warpage is some, with after scraper pressurizing attaching, by autoclave, process on one side, make display panel.
(comparative example 2)
By the method identical with comparative example 1, make the transparency carrier TS that has formed ornamental portion.Thereon, by thickness: adhesive tape (day eastern electrician's system: CS9837T) be cut into after 60mm * 120mm, closely sealed adhesive linkage lamination form that is provided with the adhesive linkage of thickness 175 μ m on the PET film with silicon release layer of 50 μ m.PET film with release layer is peeled off, as another transparency carrier TS ', while unidimensional glass warpage is used after scraper pressurizing attaching, by autoclave, processed and make display panel.
(comparative example 3)
As transparency carrier TS, the PET film of used thickness 0.1mm, 60mm * 120mm, uses the method identical with comparative example 2 to be formed to adhesive linkage.Then, peel off the PET film with release layer, as another transparency carrier TS ', while make unidimensional PET film warpage scraper pressurizing attaching, make display panel.
(evaluation method), in embodiment and comparative example, by under the state of the film adhered transparency carrier in first (peeling off the state before barrier film and second transparency carrier of laminating), carries out whether can finding the outward appearance confirmations such as bubble.Then, by from ornamental portion across to display part, from barrier film, use stylus-shaped measuring machine (the accurate system-SURFCOM1500 in Tokyo), the ISO95 difference of altitude condition determination of take is benchmark, measures difference of altitude.At difference of altitude 3.0 μ m, with interior, be judged to be zero (OK does not have bubble).
In addition, for two transparency carriers of laminating and the display panel made, the outward appearance after processing by visual observation autoclave, is confirmed whether to produce the outward appearances such as bubble etc. is bad.
Evaluation result is shown in to table 1 and Figure 11.
［ table 1 ］ result
| ? | After a slice laminating: outward appearance | After a slice laminating: difference of altitude | After two laminatings: |
| Embodiment | |||
| 1 | Zero without bubble | Zero difference of altitude 0.5 μ m | ○ |
| |
Zero without bubble | Zero difference of altitude 1.0 μ m | ○ |
| |
Zero without bubble | Zero difference of altitude 1.0 μ m | ○ |
| |
Zero without bubble | Zero difference of altitude 2.0 μ m | ○ |
| Embodiment 5 | Zero without bubble | Zero difference of altitude 2.0 μ m | ○ |
| |
Zero without bubble | Zero difference of altitude 1.0 μ m | ○ |
| Embodiment 7 | Zero without bubble | Zero difference of altitude 1.5 μ m | ○ |
| Embodiment 8 | Zero without bubble | Zero difference of altitude 1.0 μ m | ○ |
| Embodiment 9 | Zero without bubble | Zero difference of altitude 2.0 μ m | ○ |
| Comparative example 1 | * there is a bubble | * difference of altitude 12 μ m | * there is a bubble |
| Comparative example 2 | Zero without bubble | * difference of altitude 10 μ m | * there is a bubble |
| Comparative example 3 | Zero without bubble | * difference of altitude 9 μ m | * there is a bubble |
As shown in table 1, because the binding face of double-sided adhesive film of the present invention is level and smooth, so can bubble-freely fit in transparency carrier.
In addition, the difference of altitude of the film after laminating a slice is 2 μ m following (figure of Figure 11 (a)), owing to being soft bonding material, therefore, the bubble of second transparency carrier of laminating is also few, after autoclave is processed, can access and there is no the good outward appearance of bubble in (photo of Figure 11 (a)).
On the other hand, in comparative example, if adhesive linkage is thin, the easy difference of altitude portion at ornament layer produces bubble, and due to the difference of altitude large (figure of Figure 11 (b)) after adhesive linkage laminating, therefore, after the transparency carrier of second of laminating, bubble can not disappear yet, and becomes bad order (photo of Figure 11 (b)).
In comparative example, due to by forming ornament layer in printing on glass, repeatedly design one by one the printing of (number of colours), therefore, production efficiency is low, in addition, has that to become the glass of high price etc. bad because losing printing stage bad.
In contrast, in the double-sided adhesive film of embodiment, use resin relief print process, or multiaspect printing etc., can efficiency form well ornament layer.In addition, because an action can be pasted on glass by the design of the hope requiring, therefore, confirmed can further improve production efficiency.
The above, several embodiments of the present invention are illustrated, but the present invention is not limited to each embodiment.Double-sided adhesive film of the present invention is that ornament layer is located in adhesive linkage, can implement transparency carrier laminating and paying of ornament layer each other simultaneously and add.The double-sided adhesive film of the application of the invention, owing to there is no need to carry out at transparency carrier the printing of ornament layer, therefore, ornament layer becomes the design of polychrome, even if printing process increases to some extent, but can not be subject to the impacts such as printing yield rate loss of the transparency carrier of great number.In addition, can on film, manage the press quality of ornament layer, polychrome design also can be by the bonding transparency carrier of being located at once.Directly on transparency carrier, form ornament layer, there is following effect: the double-sided adhesive film that uses bad also the application of the invention of existing methodical bubble of double-sided adhesive film laminating, and become the laminating between even surface, the batch processing etc. for a long time such as yield rate loss that bubble causes and autoclave can be significantly cut down, high productivity etc. can be accessed.
Because double-sided adhesive film of the present invention can so ornament layer also can form with reel form, can adopt various mode of printings with flexible film-like manufacture, can the high operation of multiaspect design productivity.
Claims (13)
1. a double-sided adhesive film, forms display panel for fitting a plurality of transparency carriers, it is characterized in that, described double-sided adhesive film has:
Separability film;
Duplexer, it is formed on described separability film, and contains the first adhesive linkage and ornament layer,
When the described transparency carrier of fitting by described double-sided adhesive film forms described display panel, described ornament layer is located at described duplexer to be present in the mode of the part beyond the part of the display part that is equivalent to described display panel.
2. double-sided adhesive film as claimed in claim 1, is characterized in that,
When the described transparency carrier of fitting by described double-sided adhesive film forms described display panel, described ornament layer is located at described duplexer in the mode of the shaped as frame shape of the peripheral part of the described display part of the described display panel of formation encirclement.
3. double-sided adhesive film as claimed in claim 1 or 2, is characterized in that,
Described the first adhesive linkage is located at described duplexer to cover the mode of described ornament layer.
4. a double-sided adhesive film, forms display panel for fitting a plurality of transparency carriers, it is characterized in that, described double-sided adhesive film has:
Separability film;
Duplexer, it is formed on described separability film, and contain the first adhesive linkage, the second adhesive linkage and be located at described the first adhesive linkage and described the second adhesive linkage between ornament layer,
When the described transparency carrier of fitting by described double-sided adhesive film forms described display panel, described ornament layer is located at described duplexer to be present in the mode of the part beyond the part of the display part that is equivalent to described display panel.
5. double-sided adhesive film as claimed in claim 4, is characterized in that,
When the described transparency carrier of fitting by described double-sided adhesive film forms described display panel, described ornament layer is located at described duplexer to form the mode of shaped as frame shape of the peripheral part of the described display part that surrounds described display panel.
6. the double-sided adhesive film as described in claim 4 or 5, is characterized in that,
Between described the first adhesive linkage and described the second adhesive linkage, be provided with the first transparent resin layer.
7. double-sided adhesive film as claimed in claim 6, is characterized in that,
Described the first transparent resin layer is not to be located at described duplexer with the overlapping mode of described ornament layer.
8. double-sided adhesive film as claimed in claim 6, is characterized in that,
Described ornament layer is formed on described the first transparent resin layer.
9. the double-sided adhesive film as described in any one in claim 6～8, is characterized in that,
Between described the first adhesive linkage and described the second adhesive linkage, be also provided with the second transparent resin layer.
10. double-sided adhesive film as claimed in claim 9, is characterized in that,
Described the second transparent resin layer is not to be located at described duplexer with the overlapping mode of described ornament layer.
11. double-sided adhesive films as claimed in claim 9, is characterized in that,
Described the second transparent resin layer is located at described duplexer to cover the mode of described ornament layer.
12. double-sided adhesive films as described in any one in claim 4～11, is characterized in that,
At least one party in described the first adhesive linkage and described the second adhesive linkage is located at the inner side of the outer rim of described ornament layer.
The manufacture method of 13. 1 kinds of double-sided adhesive films, this double-sided adhesive film is used for fitting a plurality of transparency carriers and forms display panel, it is characterized in that, and described manufacture method comprises following operation:
A surperficial part at temporary support body forms ornament layer;
On part beyond a described part for described temporary support body and described ornament layer, form the first adhesive linkage;
Stacked separability film on described the first adhesive linkage;
Peel off described temporary support body and described the first adhesive linkage and described ornament layer are transferred to described separability film side; And
The adhesive film that is formed with the second adhesive linkage on barrier film is laminated in to the face of described the first adhesive linkage and described ornament layer in described the second adhesive linkage mode relative with the face of described the first adhesive linkage and described ornament layer.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-202867 | 2012-09-14 | ||
| JP2012202867A JP6035599B2 (en) | 2012-09-14 | 2012-09-14 | Double-sided adhesive film |
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| Publication Number | Publication Date |
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| CN103666296A true CN103666296A (en) | 2014-03-26 |
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| CN201310418049.4A Pending CN103666296A (en) | 2012-09-14 | 2013-09-13 | Double-sided adhesive film and manufacturing method thereof |
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| JP (1) | JP6035599B2 (en) |
| CN (1) | CN103666296A (en) |
| PH (1) | PH12013000272A1 (en) |
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| CN109064882A (en) * | 2018-07-18 | 2018-12-21 | 业成科技（成都）有限公司 | Display device and preparation method thereof |
| CN110379298A (en) * | 2019-07-19 | 2019-10-25 | 深圳市华星光电半导体显示技术有限公司 | The production method of frame glue structure and display panel |
| CN111587181A (en) * | 2018-03-29 | 2020-08-25 | Ｎｉｓｓｈａ株式会社 | Display panel and method for manufacturing the same |
| CN111627323A (en) * | 2020-06-28 | 2020-09-04 | 京东方科技集团股份有限公司 | Film laminating structure, display structure and display device |
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Also Published As
| Publication number | Publication date |
|---|---|
| PH12013000272A1 (en) | 2015-03-30 |
| JP2014058596A (en) | 2014-04-03 |
| JP6035599B2 (en) | 2016-11-30 |
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