CN103249793B - There is the double-sided adhesive tape of the doing over again property of improvement - Google Patents
There is the double-sided adhesive tape of the doing over again property of improvement Download PDFInfo
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- CN103249793B CN103249793B CN201180058676.0A CN201180058676A CN103249793B CN 103249793 B CN103249793 B CN 103249793B CN 201180058676 A CN201180058676 A CN 201180058676A CN 103249793 B CN103249793 B CN 103249793B
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- adhesive tape
- double
- sided adhesive
- binder layer
- sheet material
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/28—Metal sheet
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J4/00—Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/203—Adhesives in the form of films or foils characterised by their carriers characterised by the structure of the release feature on the carrier layer
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/40—Adhesives in the form of films or foils characterised by release liners
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J9/00—Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
- C09J2203/318—Applications of adhesives in processes or use of adhesives in the form of films or foils for the production of liquid crystal displays
Abstract
The present invention relates to a kind of double-sided adhesive tape, by applying power with parallel direction to the surface adhered to, this adhesive tape is easily peeled off, thus provides excellent doing over again property.The invention provides a kind of double-sided adhesive tape, wherein by can easily peeling off and remove one of in the layer of the multiple layers of adhesive sheet formed.
Description
Technical field
The present invention relates to a kind of double-sided adhesive tape with the doing over again property of improvement.Specifically, the present invention relates to a kind of double-sided adhesive tape, wherein when applying power with parallel direction to the surface adhered to, will be easy to one of in the layer of the double-sided adhesive tape formed by multiple layers peel off, thus the doing over again property that manufactures a product in process of the described double-sided adhesive tape of improvement use.
Background technology
Manufacturing a product as in the process of electron device, various types of tackiness agent or adhesive tape can be used.If there is defect in the process manufactured a product, discardable product or detaching products is become single part one by one, and re-use the parts disassembled.
Along with the recent exploitation to meeting the more electron device of high-performance and quality standard, meet these more often kind of configuration of high-performance and quality standard electronic device components have also been obtained exploitation, therefore these parts become expensive.Under these circumstances, if there is defect in the process manufacturing electronic product, if abandon this product, then except resource consumption and environmental pollution, also serious financial loss will be brought.
An example of high cost electron device arrangement components is contact panel.Contact panel is the device be assemblied in panel surface, so that the physical contact by the finger of user, pointer or other stylus is converted into electrical signal and exports this signal.Contact panel has been applied to liquid-crystal display, plasma display, EL (electroluminescent) device and Organic Light Emitting Diode etc.
Contact panel has complicated configuration and expensive.But, being attached to by contact panel on display panel or being attached in the process on touch screen by protection covering window, may defect be there is.Cause the reason of defect may be that dust in attach procedure pollutes or positioning error.If there is this type of defect, if abandoned by faulty goods, then monetary loss will be brought.For reducing financial loss, desirably contact panel can be stripped down from display panel or covering window, and re-used.Not only contact panel, miscellaneous part also needs to re-use.
But because in the process manufactured a product, contact panel adheres to display panel or covering window securely as counterpart, therefore contact panel may be not easy to be separated, or may damage in sepn process.If contact panel is separated, or damage in sepn process, then in performance, also the high price contact panel of no problem cannot re-use.Even if contact panel is separated and is not caused any damage, if but there is the residue of tackiness agent on the contact panel be separated, then also will be difficult to re-using.
At present, electron device and arrangement components complex structure thereof and expensive.With regard to reduction manufacturing cost and doing over again property, even if expect in the manufacture of electronic devices defect to occur, all parts of electron device also can re-use in a secured manner, for reprocessing.
Summary of the invention
An object of the present invention is to provide a kind of adhesive tape, electronic device components can be attached to over each other by safely, and if need, is easy to peel off, thus improves doing over again property.
Another object of the present invention is to provide a kind of adhesive tape, wherein easily peels off by a certain layer of the multiple layers of adhesive tape formed, even if make, in the process using described adhesive tape assembling parts, defect occurs, described parts also can easily be separated.
Another object of the present invention is to provide a kind of display device by using described adhesive tape to manufacture.
The invention provides a kind of double-sided adhesive tape, its second binder layer comprising film shape sheet material, be arranged at the first binder layer on a surface of described sheet material and be arranged on another surface of described sheet material.
In described double-sided adhesive tape, temperature be 60 DEG C, by using this double-sided adhesive tape that aluminum strip is attached to SUS panel and by described aluminum strip from the condition that the pinblock speed that SUS panel is peeled off is 10mm/min, the shearing resistance of the second binder layer is at about 0.05kg/in
2to about 16kg/in
2scope in.While applying opposite force with parallel direction between aluminum strip and SUS panel, measure stress and strain and maximum stress be considered as shearing resistance (see Fig. 7 and 8).As a reference, SUS panel is stainless steel faceplate.
If the shearing resistance of the second binder layer is less than about 0.05kg/in
2, then the second binder layer may be peeled off because of the impact in usual use procedure or other reasons, thus causes the inconvenience in use.If the shearing resistance of the second binder layer is less than about 16kg/in
2, then detachability is enough to obtain enough doing over again property.But, if shearing resistance exceedes about 16kg/in
2, then the second binder layer will be not easy to peel off, and thus can not obtain enough doing over again property.Therefore, the shearing resistance of the second binder layer is restricted to as mentioned above.
According to one embodiment of present invention, for increasing alternative, shearing resistance more narrowly can be limited to about 0.08kg/in
2to about 10kg/in
2, testing method is by mentioned above.If shearing resistance is less than about 10kg/in
2, then more excellent doing over again property can be obtained.Preferably the shearing resistance of the second binder layer is about 0.08kg/in
2to about 4kg/in
2.
According to one embodiment of present invention, the shearing resistance of the first binder layer is greater than the shearing resistance of the second binder layer.
According to another embodiment of the invention, for improving doing over again property, the second binder layer can be regulated, making it to work as at 60 DEG C to 4.5in
2area apply 1kg counterweight time there are 20 seconds or longer coming off the time, and when at 60 DEG C to 4.5in
2area apply 3kg counterweight time there are 600 minutes or shorter coming off the time.Preferably the time of coming off of the second binder layer is, when at 60 DEG C to 4.5in
2area apply 1kg counterweight time 30 seconds or at more growing to 60 DEG C to 4.5in
2area apply 3kg counterweight time 300 minutes or shorter.
The time that comes off measures as shown in Figure 9, and wherein by using double-sided adhesive tape to adhere to PMMA/PC plate to SUS panel, the counterweight to PMMA/PC plate applying 1kg or larger is also measured and come off the time.
If the second binder layer has above-mentioned coming off the time, then it probably can not be peeled off because of the external impact in usual use procedure, thus improves the convenience in using and can obtain enough doing over again property.
For increasing alternative, the second binder layer can be regulated, making it to work as at 60 DEG C to 4.5in
2area apply 1kg counterweight time there are 30 seconds or longer coming off the time, and when at 60 DEG C to 4.5in
2area apply 3kg counterweight time there are 300 minutes or shorter coming off the time.If the second binder layer has above-mentioned coming off the time, then can obtain more excellent doing over again property.
According to one exemplary embodiment of the present invention, the second binder layer can be formed by binder polymer.The type or the molecular weight that form the polymkeric substance of the second binder layer are unrestricted, as long as had above-mentioned shearing resistance by the second binder layer of this polymer formation or come off the time.Such as, can use and have about 10, the polymkeric substance of the molecular weight of 000 to about 300,000g/mol, or the polymkeric substance with the molecular weight exceeding this scope can be used.The material forming the second binder layer can be the binder polymer with lower molecular weight or the binder polymer with higher molecular weight as required.And can select to select different materials according to the needs of user.
If need to do over again in the manufacturing processed using double-sided adhesive tape of the present invention, if apply opposite force with parallel direction to the surface adhered to, then the second binder layer will be peeled off, and the parts be attached to one another by double-sided adhesive tape of the present invention can be easily separated.Consequently, improve doing over again property.
According to one embodiment of present invention; film shape sheet material is made up of transparent material, and described transparent material is selected from based on the resin of acryl, vibrin, polycarbonate resin, resin, olefin polymer and TAC (tri acetyl cellulose) based on norbornylene.According to one embodiment of present invention, preferably can use polyethylene terephthalate (PET), it is a kind of vibrin and has high optical transmittance.
According to one embodiment of present invention, the thickness of film shape sheet material can be adjusted to about 5 μm to about 100 μm.If film shape sheet material has the thickness in above-mentioned scope, then it easily can be applied to little and large display electron device.
According to one embodiment of present invention, the thickness of the first binder layer and the second binder layer can be adjusted in the scope of about 5 μm to about 500 μm.If thickness is in above-mentioned scope, then can obtain enough bounding forces parts being adhered to product such as electronic product.
According to one embodiment of present invention, the second binder layer can be formed by binder polymer composition.The binder polymer composition forming the second binder layer contains monomer and polymerization starter.Outside demonomerization and polymerization starter, binder polymer composition also can contain chain-transfer agent, polymerization retarder, molecular-weight average lower than at least one in the low molecular weight additives of about 5000g/mol and solidifying agent.The content of solidifying agent can be different with the type of solidifying agent used.
According to one embodiment of present invention, can in addition the second binder layer with it on the surface opposite of film shape sheet material is set surface on auxiliary film sheet material is set.Auxiliary film sheet material arranges the 3rd binder layer.Regulate the shearing resistance of the 3rd binder layer, make it the shearing resistance being greater than the second binder layer.
Double-sided adhesive tape of the present invention is the scotch tape with excellent optical transmittance.According to one embodiment of present invention, the optical transmittance of double-sided adhesive tape is greater than about 90%.
Present invention also offers a kind of display device using described double-sided adhesive tape.The transparent panel that display device according to an embodiment of the invention comprises display panel, is arranged on the double-sided adhesive tape on the display surface of described display panel and is arranged on the opposing surface of described double-sided adhesive tape.Described double-sided adhesive tape is according to the double-sided adhesive tape with the doing over again property of improvement of the present invention.
According to one embodiment of present invention, transparent panel can be the covering window of electron device.Transparent panel can be contact panel.According to one embodiment of present invention, transparent panel can be the covering window be arranged on the front surface of the contact panel be attached on display panel.
Double-sided adhesive tape according to the present invention has good wettability to adherend, thus shows gratifying bounding force.Therefore, in normal service condition, without the need to worrying that described double-sided adhesive tape can be peeled off.But if apply shearing force with parallel direction to the surface adhered to, then the second binder layer can easily be separated from adherend.In addition, after isolation, binder layer material residue can easily remove.Therefore, if use described double-sided adhesive tape, excellent doing over again property can be obtained.
Because double-sided adhesive tape according to the present invention is transparent, therefore it can be applied to the display surface of display device effectively.Especially, described double-sided adhesive tape can be used for transparent panel effectively as contact panel or covering window adhere to and be fixed on the display surface of display panel.If by using described double-sided adhesive tape to adhere to transparent panel on the display surface of display panel, then the second binder layer of this double-sided adhesive tape can easily be peeled off, can obtain excellent doing over again property.Therefore, even if there is defect in the fabrication process, also arrangement components can be re-used.
Accompanying drawing explanation
Fig. 1 is for illustrating the figure of the structure of double-sided adhesive tape according to an embodiment of the invention (100).
Fig. 2 illustrates that transparent panel (310) is attached to the figure on display panel (320) surface by the double-sided adhesive tape (100) of use Fig. 1.
Fig. 3 illustrates in the double-sided adhesive tape (100) used in fig. 2, by applying power with parallel direction to the surface adhered to, the second binder layer is peeled off.
Fig. 4 is the figure of the structure of the double-sided adhesive tape (200) illustrated according to another embodiment of the invention.
Fig. 5 is the figure that transparent panel (310) is attached on display panel (320) surface by the double-sided adhesive tape (200) illustrated in use Fig. 4.
Fig. 6 illustrates in the double-sided adhesive tape (200) used in Figure 5, peels off the second binder layer by applying power with parallel direction to the surface adhered to.
Fig. 7 illustrates the structure of the shearing resistance measuring double-sided adhesive tape.
Fig. 8 illustrates when the Al bar to Fig. 7 applies parallel power to measure stress-strain curve during shearing resistance with SUS panel.
Fig. 9 illustrates the structure of the time that comes off of measuring double-sided adhesive tape.
Embodiment
The present invention is described in detail below in conjunction with accompanying drawing.
Fig. 1 illustrates the structure of double-sided adhesive tape according to an embodiment of the invention (100).
The second binder layer (120) that double-sided adhesive tape according to an embodiment of the invention (100) comprises film shape sheet material (101), is arranged on the first binder layer (110) on a surface of described sheet material and is arranged on another surface of described sheet material.
For film shape sheet material (101), film shape polymer materials can be used.The example of polymer materials includes but not limited to that resin based on acryl is if polymethylmethacrylate (PMMA), polyester are as polyethylene terephthalate (PET), polycarbonate, resin, olefin polymer and TAC (tri acetyl cellulose) etc. based on norbornylene.Described polymer materials can use or combinationally using with its two or more type individually.
In described polymeric film, can use and be easy to obtain and there is the PET film of high-transmission rate.
For film shape sheet material (101) according to an embodiment of the invention, the film shape sheet material with the optical transmittance being greater than about 90% can be used.
The thickness of film shape sheet material (101) is unrestricted.According to one embodiment of present invention, the thickness of film shape sheet material (101) can be selected in the scope of about 5 μm to about 100 μm.Especially, described thickness can within the scope of about 10 μm to about 50 μm.
First binder layer is arranged on a surface of film shape sheet material (101).According to one embodiment of present invention, the first binder layer (110) can be formed by binder polymer.
For the binder polymer of formation first binder layer (110), any binder polymer can be used, as long as it is usually used in the attachment of display unit and has the enough transparent of the visibility not reducing display.The example of binder polymer comprises known or normally used pressure-sensitive adhesive polymers, as the binder polymer based on acryl, the binder polymer based on silicon, the binder polymer based on polyester, the binder polymer based on rubber or the binder polymer based on urethane.Described binder polymer can use or combinationally using with its two or more type individually.Such as, the binder polymer forming the first binder layer (110) can be the polymkeric substance based on acryl, and the total weight that the described polymkeric substance based on acryl contains based on monomer component has the C being greater than 50 % by weight
1-18(methyl) acrylate.
According to one embodiment of present invention, the first binder layer (110) can be formed by available commercially available optical adhesive in the market the tackiness agent of printing opacity (such as, optically).First binder layer (110) should be transparent, has the optical transmittance being greater than about 90%.The bond strength of the first binder layer (110) is unrestricted, as long as the first binder layer (110) has enough bounding forces to be stably attached on the display surface of display base plate (320) by transparent panel (310).
Although the binder polymer forming the first binder layer can belong to same or analogous kind with the binder polymer of formation second binder layer, their composition ratio or molecular weight can not be identical.
The shearing resistance of the first binder layer can be greater than about 1kg/in
2.In order to stronger bounding force, the shearing resistance of the first binder layer can be greater than about 3kg/in
2.Shearing resistance is for by the value measured by testing under the condition using double-sided adhesive tape to be attached to by aluminum strip on SUS panel as shown in Figure 7.Temperature is 60 DEG C, and the pinblock speed of the instrument peeled off from SUS panel by described aluminum strip is 10mm/min, applies opposite force with parallel direction between aluminum strip and SUS panel simultaneously.In the process applying opposite force, measure stress and strain, as shown in Figure 8, and maximum stress is considered as shearing resistance.(experiment condition: between Al bar and SUS panel, pinblock speed is 10mm/min).
The molecular weight forming the polymkeric substance of the first tackiness agent is unrestricted.Described molecular weight can be little to about 10,000 to arriving about 1,000,000g/mol greatly, or can be greater than about 1,000,000g/mol.
Second binder layer (120) be formed in film shape sheet material (101) its on the first tackiness agent (110) layer is not set another on the surface.Second binder layer is separable layer, and when applying power with parallel direction to the surface adhered to, it will be easy to peel off, thus improve the doing over again property of the product of the double-sided adhesive tape manufacture of the application of the invention.
According to one embodiment of present invention, the second binder layer (120) can be formed by binder polymer.The binder polymer forming the second binder layer can be prepared by binder polymer composition, and described binder polymer composition comprises monomer and polymerization starter also also comprises chain-transfer agent, polymerization retarder, at least one had in low-molecular-weight additive and solidifying agent.
The binder polymer forming the second binder layer should have enough transparencys of the visibility significantly not reducing display.Example for the binder polymer of the second binder layer comprises known or normally used pressure sensitive adhesive, as the binder polymer based on acryl, the binder polymer based on silicon, the binder polymer based on polyester, the binder polymer based on rubber and the binder polymer based on urethane.Described binder polymer can use or combinationally using with its two or more type individually.Although the binder polymer forming the second binder layer can be same or similar in type with the binder polymer of formation first binder layer, their composition ratio or molecular weight difference.
According to one embodiment of present invention, binder polymer based on acryl can be used as the binder polymer of formation second binder layer.
For the binder polymer based on acryl, such as, can use containing C
1-18the polymkeric substance based on acryl of (methyl) alkyl acrylate, namely with based on C
1-18the compound of acrylate is as the main ingredient of monomer.Can use containing being different from based on C
1-18the multipolymer of one or more monomers of the compound of acrylate.
Can with based on C
1-18the example of the copolymerisable monomer that the monomer of acrylate uses together includes but not limited to have copolymerisable monomer, the monomer of styrene-based, monomer, vinyl ester, the monomer containing cyano group, the monomer containing amide group, the monomer containing hydroxyl groups, the monomer containing acidic-group, the monomer containing epoxide group, the monomer containing amino group and the monomer containing carboxylic group based on alpha-olefin of various functional group.
Meanwhile, also can use known to the various monomers of modification based on the monomer of the binder polymer of acryl.According to one embodiment of present invention, the isobornyl acrylate being called IBXA can be used.
For the method for preparation based on the binder polymer of acryl, known method can be adopted.Such as, solution polymerization process, emulsion polymerization, autohemagglutination can be used legal or use the light polymerization method of light trigger.
According to one embodiment of present invention, the light polymerization method using light trigger as polymerization starter can be adopted.For Photoepolymerizationinitiater initiater, commercially available Irgacure series can be used.
If needed, linking agent can be used.Linking agent known on market can be used.Especially, can use polyfunctional acrylic ester or methacrylic ester, multifunctional melamine compound, multi-functional epoxy compound, polyfunctional isocyanate compound or other.But the type of linking agent is unrestricted.Described linking agent can use or combinationally using with its two or more type individually.
Described binder polymer can contain various additive.Such as, various known additive can be used, as the resin of normally used imparting bounding force, softening agent, filler, tinting material, UV light absorber and tensio-active agent.But, even if with the addition of additive, do not answer the transparency of weakable adhesive fluoropolymer resin yet.
In addition, the composition of the binder polymer being used for the second binder layer is formed also containing chain-transfer agent, polymerization retarder, at least one had in low-molecular-weight additive and solidifying agent.
At least one weak chemical bond is there is to induce chain transfer reaction in chain-transfer agent.Due to chain transfer reaction, therefore the molecular-weight average of the final polymkeric substance produced will reduce.Therefore, chain-transfer agent is called as molecular weight regulator.In the present invention, usage chain transfer agent reduces the molecular weight of the binder polymer of formation second binder layer (120) to regulate the shearing resistance of the second binder layer.According to one embodiment of present invention, IOTG (isooctyl mercaptoacetate) can be used as chain-transfer agent.
Polymerization retarder postpones polyreaction to reduce the molecular weight of polymkeric substance.According to one embodiment of present invention, the example of polymerization retarder comprises AMS (alpha-methyl styrene).
Polymer composition is added to reduce bond strength or shearing resistance by having low-molecular-weight additive.The molecular-weight average with low-molecular-weight additive is less than about 5000g/mol.Even if described additive does not affect molecular-weight average, it also makes to have low-molecular-weight part and is present in partly in polymkeric substance and reduces bounding force or shearing resistance.As having low-molecular-weight additive, commercially available product can be used.According to one embodiment of present invention, as having low-molecular-weight additive, commercially available prod Joncyl series (BASF (BASF) company) can be used.
Solidifying agent is added in polymer composition to promote or to control curing reaction.Solidifying agent substantially can be provided the polymer composition with force of cohesion and prevent the surface of the second binder layer formed by curing reaction to be damaged.As solidifying agent, commercially available product can be used.According to one embodiment of present invention, commercially available prod HDD (the special extraordinary chemical company (SKcytecspecialties) of SK cyanogen) can be used as solidifying agent.
According to the present invention, the shearing resistance of the second binder layer has weakened the doing over again property improving double-sided adhesive tape.Shearing resistance is by chain-transfer agent, polymerization retarder and have low-molecular-weight additive to weaken.Individually or with mixture usage chain transfer agent, the polymerization retarder of its two or more type and low-molecular-weight additive can be had.According to one embodiment of present invention, based on the monomer meter of 100 weight parts, the content of chain-transfer agent can be about 0.03 to about 5 weight part, and the content of polymerization retarder can be about 0.01 to about 0.5 weight part, and the content with low-molecular-weight additive can be about 1 to about 50 weight part.Composition weight can be different with the type of monomer used.According to one embodiment of present invention, based on the monomer meter of 100 weight parts, the content of solidifying agent can be greater than 0 weight part but be about 0.07 weight part or less.
According to one embodiment of present invention, the shearing resistance of the second binder layer (120) is less than the shearing resistance of the first binder layer (110).Therefore, if need to do over again, if apply shearing force with parallel direction to the surface adhered to, then the second binder layer will be peeled off, and the parts be adhering to each other by double-sided adhesive tape of the present invention can be easily separated.
The shearing resistance of the second binder layer (120) is at about 0.05kg/in
2to about 16kg/in
2scope in.Specifically, shearing resistance is the value recorded aluminum strip being attached to SUS panel, under temperature is 60 DEG C, pinblock speed is 10mm/min condition (experiment condition: between Al bar and SUS panel, pinblock speed is 10mm/min).
Shearing resistance is adjustable to and is less than about 16kg/in
2and can be different with the use of double-sided adhesive tape of the present invention.Such as, if double-sided adhesive tape of the present invention is applied to the running gear into relative dingus, then shearing resistance when shearing resistance need not be applied to large display device as wherein double-sided adhesive tape of the present invention is so large.Therefore, the shearing resistance of double-sided adhesive tape can be adjusted to be less than about 10kg/in at the temperature of 60 DEG C
2, i.e. about 0.08kg/in
2to about 10kg/in
2.Running gear comprises usually known device as mobile phone, smart mobile phone, PMP, automatic navigator, MP3 player, panel computer, net book and laptop.
Meanwhile, for promoting doing over again property, when using PMMA/PC plate and SUS panel, the second binder layer can be adjusted to and work as at 60 DEG C to 4.5in
2area apply 1kg counterweight time there are 20 seconds or longer coming off the time, and when at 60 DEG C to 4.5in
2area there is come off the time (experiment condition: see Fig. 9) of 600 minutes or shorter when applying 3kg counterweight.
The time that comes off also can be different with the use of double-sided adhesive tape of the present invention.Such as, if double-sided adhesive tape of the present invention is applied to the running gear into relative device for compactly, then bond strength when bond strength need not be applied to large display device as wherein said double-sided adhesive tape is so large.Therefore, when at 60 DEG C to 4.5in
2area apply 1kg counterweight time described double-sided adhesive tape can have 30 seconds or longer coming off the time, and when at 60 DEG C to 4.5in
2area apply 3kg counterweight time there are 300 minutes or shorter coming off the time.
As shown in Figure 2, second binder layer (120) of double-sided adhesive tape according to an embodiment of the invention (100) can be applied to be attached on the display surface of display panel (320) by transparent panel (310).When needs are done over again, as shown in Figure 3, the second binder layer (120) should be easy to peel off.
In fig. 2, the first binder layer (110) is attached on transparent panel (310), and the second binder layer (120) is attached on the display surface of display panel (320).In contrast, the first binder layer can be attached on the display surface of display panel, and the second binder layer is attached on transparent panel.
According to one embodiment of present invention, when forming the second binder layer described above, the binder polymer with low relative molecular amount can be used or not there is low molecular-weight average but improve containing the binder polymer with certain low-molecular-weight additive doing over again property.According to the selection of applicable cases and user, can use and have about 10, the polymkeric substance of the molecular weight of 000 to about 300,000g/mol, or the polymkeric substance with the molecular weight exceeding this scope can be used.
According to one embodiment of present invention, provide a kind of method manufacturing double-sided adhesive tape of the present invention, on the surface wherein obtained the first binder polymer in slurry form being arranged at film shape sheet material (101) and photocuring, to form the first binder layer (110), and obtained the second binder polymer in slurry form is arranged at film shape sheet material (101) another on the surface and photocuring, to form the second binder layer (120).The order forming the first binder layer and the second binder layer can be conversely.The first binder layer and the second binder layer can be formed simultaneously.
If needed, separate paper or liner can be set on the exposed surface of the exposed surface of the first binder layer and/or the second binder layer.
The thickness of the first binder layer (110) and the second binder layer (120) is unrestricted, as long as they can give enough bounding forces.Such as, the thickness of the first binder layer (110) and both the thickness of the second binder layer (120) all can be about 5 μm to about 500 μm.Especially, described thickness can be about 100 μm to about 400 μm.
Double-sided adhesive tape according to an embodiment of the invention has the optical transmittance (JISK7361) being greater than about 90% in visible spectrum wavelength region may.
In the present invention, double-sided adhesive tape can have an extra play, only otherwise damage effect of the present invention.
Such as, double-sided adhesive tape (200) shown in Fig. 4 has such structure, wherein on second binder layer (120) of the double-sided adhesive tape of Fig. 1, be provided with auxiliary film sheet material (102), and on auxiliary film sheet material (102), be provided with the 3rd binder layer (130).
Material, the thickness of auxiliary film sheet material (102) can be identical with those of film shape sheet material (101) with other aspects.3rd binder layer (130) can be identical with the first binder layer (110).
Present invention also offers a kind of display device using double-sided adhesive tape (100,200).The transparent panel (310) (Fig. 2 and 5) that display device according to an embodiment of the invention comprises display panel (320), is arranged on the double-sided adhesive tape (100,200) on the display surface of described display panel and is arranged on described double-sided adhesive tape.
Specifically, one embodiment of the present of invention shown in Fig. 2 relate to such structure, wherein second binder layer (120) of double-sided adhesive tape (100) adheres on the display surface of display panel (320), and the first binder layer (130) adheres on transparent panel (310).Fig. 5 shows such structure, wherein the 3rd binder layer (130) of double-sided adhesive tape (200) according to another embodiment of the invention adheres on the display surface of display panel (320), and the first binder layer (110) adheres on transparent panel (310).
According to one embodiment of present invention, transparent panel (310) can be the covering window of electron device, or described plate can be contact panel.
According to another embodiment of the invention, transparent panel can be the covering window be arranged on the front surface of the contact panel be attached on display panel.In other words, even if when being attached covering window wherein on the front surface of contact panel, also double-sided adhesive tape of the present invention can be used.
Can to be attached to before display panel on display surface according to double-sided adhesive tape of the present invention.
Can effectively use according to double-sided adhesive tape of the present invention (100,200) by transparent panel (310) as contact panel or cover window adhere to and be fixed on the display surface of display panel (320).Even if when being attached covering window on display surface before contact panel, described double-sided adhesive tape (100,200) also can be used.
As shown in figures 3 and 6, if apply parallel power and shearing force between transparent panel (310) and display panel (320), then the second binder layer of double-sided adhesive tape will be easy to peel off, to obtain excellent doing over again property.
The second binder layer (120) according to double-sided adhesive tape of the present invention (100,200) has good wettability to adherend, thus shows gratifying bounding force.Therefore, in normal service condition, without the need to worrying that the second binder layer (120) can be peeled off.But if apply power with parallel direction to the surface adhered to, then the second binder layer (120) will be easy to be separated.After isolation, binder layer material residue can easily remove.Therefore, the display panel (320) separated and transparent panel (310) can re-use and without the need to abandoning.Correspondingly, will unnecessary waste be reduced, thus reduce manufacturing cost.
Unrestricted according to the type of display panel of the present invention.Such as, liquid crystal display device, CRT, plasma display, organic illuminating element indicating meter etc. are had.
example
In more detail the present invention is described below in conjunction with example and comparative example.
comparative example 1-4 and example 1-25
For film shape sheet material (101), use the PET film with the thickness of 25 μm.(can from the 3M company (3MCompany of St. Paul, MN to the tackiness agent 8146 of laminated optically printing opacity on a surface of sheet material (101) with the thickness of 100 μm, St.Paul, MN) commercially available, it is typically used as OCA (optically the tackiness agent of printing opacity)), thus form the first binder layer (110).
For providing the second binder layer, prepare the binder polymer of comparative example and example according to the composition ratio in light polymerization process and following table 1.Content in following table 1 represents the relative weight when the total amount of monomer is 100 weight part.For monomer, use the mixture of the monomer based on acryl of two types.
table 1
The information of above material is shown in following table 2.
table 2
As in following table 3, be partly polymerized by being exposed to UV radiation to make the monomer mixture comprising light trigger under rich nitrogen atmosphere, result obtains slurry pre-polymerization preparation.
table 3
| UVA intensity | N 2Purge time | δT | Final viscosity |
| 0.3mW/cm 2 | 15 minutes | 6℃ | 1000-2000cps |
After adding other additives remaining, the slurry pre-polymerization preparation blade coating obtained above is coated with between organosilyl PET liner at two.
The material of coating is made to be exposed to low strength UV radiation through four independent districts, as shown in Table 4 below, to obtain second binder layer (120) of the thickness with 50 μm.
table 4
| District 1 | District 2 | District 3 | District 4 | |
| Intensity (mW/cm 2) | 3.0 | 5.0 | 6.0 | 6.0 |
| The residence time (s) | 45 | 45 | 45 | 45 |
Another the second obtained binder layer being coated on film shape sheet material (101) is above on the surface to manufacture double-sided adhesive tape and to be called comparative example 1 to 4 and example 1 to 25.
evaluate
Measure and be used for the molecular weight of binder polymer of the double-sided adhesive tape preparing comparative example 1 to 4 and example 1 to 25, and at the temperature of 60 DEG C, measure the time that comes off and the shearing resistance of double-sided adhesive tape.
Between Al bar and SUS panel and pinblock speed be measure shearing resistance under the experiment condition of 10mm/min.
In detail, preparation size is that the double-sided adhesive carry sample of 1 " × 1 " carries out 60 DEG C of shearing tests.
As shown in Figure 7, the second binder layer (120 is made; Low interior poly-side) towards Al bar, sample layer is incorporated on Al bar, wherein Al bar has the thickness of 1.3mm and the width of 28mm, and make the first binder layer (110) towards SUS panel, the opposite side of sample is laminated on SUS panel (SUS:0.8mm × 75mm × 75mm).SUS panel is stainless steel faceplate.
By laminated sample 60 DEG C, hot pressing 20 minutes under 1MPa.
Being put into by sample in the convection of air room (being provided by Instron Corporation (Instron)) of 60 DEG C and between aluminum strip and SUS panel, to apply opposite force with parallel direction, pinblock speed is 10mm/min.Measure the stress-strain curve of 10 minutes, as shown in Figure 8, and to get maximum stress be shearing resistance.
Measure at 60 DEG C as shown in Figure 9 and come off the time.
In detail, preparation size is 47mm × 62mm (is 4.5 inches
2) double-sided adhesive carry sample.Make the second binder layer (120; Low interior poly-side) towards PMMA/PC plate, sample layer is above incorporated on PMMA/PC plate.This PMMA/PC plate is from MGC Fei Er's Xu Te company (MGCfilsheetCo., Ltd)
mR58, it is of a size of 52mm × 70mm × 0.8mm (thickness).Also make the first binder layer (110) towards SUS panel, sample layer is incorporated on SUS panel (SUS:0.8mm × 75mm × 75mm).
Laminated sample is put into 60 DEG C, in autoclave under 1MPa 20 minutes, then put in the air convection oven of 60 DEG C, and apply 1kg counterweight or 3kg counterweight respectively to PMMA/PC plate.Thereafter, measurement comes off the time.If the second binder layer when applying 1kg counterweight unstripped with is separated, then the time of coming off measured by applying 3kg counterweight.Table 5 and 6 shows result.
table 5
table 6
As shown in table 5 and 6 above, if contain chain-transfer agent, polymerization retarder, at least one had in low-molecular-weight additive and solidifying agent with suitable amount, then the shearing resistance of the second binder layer (120) by reduction and the time of coming off will shorten, make when applying power with parallel direction to the surface adhered to, the second binder layer easily can be peeled off and is separated.
Specifically, when being separated PMMA/PC plate and the second binder layer by force, the double-sided adhesive tape of example 1 to 25 demonstrates cohesive failure, and namely PMMA/PC plate is separated with the second binder layer, keeps its original texture simultaneously.On the other hand, the double-sided adhesive tape of comparative example 1 to 4 demonstrates adhesion failure, and wherein PMMA/PC plate and the second binder layer be separated are to causing damage each other.
Therefore, the invention provides a kind of adhesive tape, electronic device components can be attached to over each other by safely, and if need, can easily peel off, thus improves doing over again property.
Claims (13)
1. a double-sided adhesive tape, described double-sided adhesive tape comprises:
Film shape sheet material;
Be arranged on the first binder layer on a surface of described sheet material; With
Be arranged on the second binder layer on another surface of described sheet material;
The shearing resistance of wherein said second binder layer, be measured as maximum strength at shearing test, for 758.45Pa to 242704Pa, the shearing resistance of wherein said first binder layer is equal to or is greater than the shearing resistance of described second binder layer, described second binder layer is formed by binder polymer composition, and described binder polymer composition contains based on C
1-18the compound of acrylate is as monomer, polymerization starter and be selected from chain-transfer agent, polymerization retarder, have lower than at least one in the additive of 5000g/mol molecular-weight average and solidifying agent, wherein based on the monomer meter of 100 weight parts, the content of chain-transfer agent is 0.03 to 1 weight part, the content of polymerization retarder is 0.01 to 0.2 weight part, the content had lower than the additive of 5000g/mol molecular-weight average is 1 to 20 weight part, and the content of solidifying agent is no more than 0.07 weight part; And
Wherein said shearing test comprises:
The double-sided adhesive tape of 1 inch × 1 inch square is provided,
Second binder layer is laminated on aluminum strip,
First binder layer is laminated on stainless steel faceplate,
At 60 DEG C, hot pressing laminated sheet 20 minutes under 1MPa,
Laminated sheet is put into 60 DEG C convection of air room and
Between aluminum strip and stainless steel faceplate, opposite force is applied 10 minutes with the speed of 10mm/min with parallel direction.
2. double-sided adhesive tape according to claim 1, the described shearing resistance of wherein said second binder layer is less than 15169Pa.
3. double-sided adhesive tape according to claim 1, wherein said film shape sheet material is selected from based on the resin of acryl, vibrin, polycarbonate resin, resin, olefin polymer or tri acetyl cellulose based on norbornylene.
4. double-sided adhesive tape according to claim 1, wherein said film shape sheet material is polyethylene terephthalate (PET).
5. double-sided adhesive tape according to claim 1, the thickness of wherein said film shape sheet material is 5 μm to 100 μm.
6. double-sided adhesive tape according to claim 1, the optical transmittance of wherein said film shape sheet material is greater than 90%.
7. double-sided adhesive tape according to claim 1, the thickness of each in wherein said first binder layer and described second binder layer is in the scope of 5 μm to 500 μm.
8. double-sided adhesive tape according to claim 1, wherein other described second binder layer with it on the surface opposite of film shape sheet material is set surface on auxiliary film sheet material is set, described auxiliary film sheet material arranges the 3rd binder layer.
9. double-sided adhesive tape according to claim 8, the shearing resistance of wherein said 3rd binder layer is greater than the shearing resistance of described second binder layer.
10. double-sided adhesive tape according to claim 1, the optical transmittance of wherein said double-sided adhesive tape is greater than 90%.
11. 1 kinds of display devices, described display device comprises:
Display panel,
Be arranged on the double-sided adhesive tape on the display surface of described display panel, and
Be arranged on the transparent panel on described double-sided adhesive tape,
Wherein said double-sided adhesive tape is double-sided adhesive tape according to claim 1.
12. display devices according to claim 11, wherein said transparent panel is the covering window of electron device.
13. display devices according to claim 11, wherein said transparent panel is contact panel.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20100139930 | 2010-12-31 | ||
| KR10-2010-0139930 | 2010-12-31 | ||
| KR1020110080096A KR101946065B1 (en) | 2010-12-31 | 2011-08-11 | Double-sided adhesive tape having improved reworkability |
| KR10-2011-0080096 | 2011-08-11 | ||
| PCT/US2011/067537 WO2012092342A2 (en) | 2010-12-31 | 2011-12-28 | Double-sided adhesive tape having improved reworkability |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103249793A CN103249793A (en) | 2013-08-14 |
| CN103249793B true CN103249793B (en) | 2016-02-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180058676.0A Expired - Fee Related CN103249793B (en) | 2010-12-31 | 2011-12-28 | There is the double-sided adhesive tape of the doing over again property of improvement |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6005060B2 (en) |
| KR (1) | KR101946065B1 (en) |
| CN (1) | CN103249793B (en) |
| TW (1) | TWI532813B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI620281B (en) * | 2013-01-09 | 2018-04-01 | 寶威光電有限公司 | Sensor module package structure and method for manufacturing the same |
| CN103970318B (en) * | 2013-01-29 | 2017-09-05 | 新加坡商宝威光电有限公司 | Sensing module encapsulating structure and its preparation method |
| KR102401014B1 (en) * | 2015-07-01 | 2022-05-24 | 삼성디스플레이 주식회사 | Flexible display apparatus and manufacturing method thereof |
| KR102333201B1 (en) * | 2015-08-27 | 2021-12-01 | 엘지디스플레이 주식회사 | Display device |
| KR102568893B1 (en) * | 2016-01-28 | 2023-08-22 | 삼성전자주식회사 | Transparent protective layer and electronic apparatus comprising the same |
| WO2017131433A1 (en) * | 2016-01-28 | 2017-08-03 | Samsung Electronics Co., Ltd. | Transparent protective layer and electronic device including same |
| KR102492618B1 (en) * | 2016-03-07 | 2023-01-30 | 삼성디스플레이 주식회사 | Display device |
| EP3500639A1 (en) * | 2016-08-16 | 2019-06-26 | 3M Innovative Properties Company | Multi-layer, optically clear adhesives with slip layer |
| KR101896634B1 (en) * | 2016-10-31 | 2018-09-07 | 주식회사 한길엔씨티 | Double sided adhesive tape exhibiting improved reworkable capability |
| KR102591568B1 (en) * | 2017-01-19 | 2023-10-23 | 삼성전자주식회사 | The Electronic Device including Display |
| CN107177321A (en) * | 2017-06-05 | 2017-09-19 | 苏州金禾新材料股份有限公司 | A kind of disassembled foam double-faced adhesive |
| KR101975283B1 (en) | 2017-07-14 | 2019-05-07 | 윤일구 | Stretchable cushion tape using hollow elastic body and manufacturing method thereof |
| CN110987789B (en) * | 2018-10-02 | 2022-05-17 | 江西格林德能源有限公司 | Lithium ion battery pole piece adhesion testing device and operation method |
| KR20210017519A (en) * | 2019-08-08 | 2021-02-17 | 삼성전자주식회사 | Display module, display panel, and display apparatus |
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- 2011-12-28 CN CN201180058676.0A patent/CN103249793B/en not_active Expired - Fee Related
- 2011-12-28 JP JP2013547639A patent/JP6005060B2/en not_active Expired - Fee Related
- 2011-12-30 TW TW100149831A patent/TWI532813B/en not_active IP Right Cessation
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Also Published As
| Publication number | Publication date |
|---|---|
| TWI532813B (en) | 2016-05-11 |
| KR101946065B1 (en) | 2019-04-17 |
| JP6005060B2 (en) | 2016-10-12 |
| CN103249793A (en) | 2013-08-14 |
| KR20120089990A (en) | 2012-08-16 |
| JP2014507513A (en) | 2014-03-27 |
| TW201239062A (en) | 2012-10-01 |
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